Please help. Find x and y. NEED ASAP

Answer:

Domain:  (-∞, ∞); Range:  (-∞, -4]

Step-by-step explanation:

Domain is the set of all possible input values of a function (or on a graph, the leftmost and rightmost extensions of the function).

Since this is a parabola, the function will extend left and right for negative infinity and infinity respectively.

Range is the set of all possible output values of a function (or on a graph, the uppermost and lowermost extensions of the function).

While the function on this graph will extend downward for negative infinity, the uppermost limit is -4, as y (output) value of the vertex.

The null and alternative hypotheses are H0: µ ≥ 1000 and Ha: µ < 1000 respectively.

The evidence to reject the manufacturer's claim is in the rejection region for the test statistic which is z < -1.54.

The null hypothesis consist of the inequality sign “equal” sign (“=” or “≥” or “≤”).

Alternative hypothesis is the complement to the null hypothesis.

The claim: The mean life of a certain type of light bulb is at least 1000 hours”. At least in inequality is represented by “≥” sign, it is null hypothesis.

H0: µ ≥ 1000

Alternative hypothesis:

The alternative hypothesis is the complement, that is, the mean life of a certain type of light bulb is less than 1000 hours.

Ha: µ < 1000

As the alternative hypothesis contains “<” sign, the test is left-tailed.

Using α = 0.02, we have critical value from standard table of normal distribution:

z0 = -1.54

Therefore, the rejection region for the test statistic is z < -1.54.

Complete question:

A light bulb manufacturer claims that a certain type of bulb they make has a mean lifetime of 1000 hours and a standard deviation of 20 hours. Each package sold contains 4 of these bulbs. Suppose that each package represents an SRS of bulbs, and we calculate the sample mean lifetime \bar x x ˉ x, with, \bar, on top of the bulbs in each package. 1. What is the null and alternative hypotheses? 2. At a = .02, do you have enough evidence to reject the manufacturer's claim?

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The equation of a line in slope intercept form is expressed as y = 25x +124

A line is defined as the shortest distance between two points. The equation of a line in point slope form is expressed as:

y - y₁ = m(x - x₁)

where;

m is the slope

(x₁, y₁) is any point on the line

Given the following parameters

m = 25

point = (-5, -1)

Substitute into the equation above to have:

y - (-1) = 25(x - (-5))

y+1 = 25(x+5)

Write in slope intercept form

y+1 = 25(x+5)

y+1 = 25x + 125

y = 25x +124

This gives the equation of the line in slope-intercept form.

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Answer:

Step-by-step explanation:

$ 3750  = truck rental;   $125 per ton of sugar transported C is cost;  S is number of tons transported Equation relating C to S would be a linear equation like y = mx + b C = 125S + $3750 This equation would be graphed in the first quadrant only you would start with your y-intercept at (0, 3750) As x increases by 1, your y increases by 125 yielding these points: (1, 3875)  (2, 4000)  (3, 4125)  etc.   

Answer:2nd down on the first one and 3rd one down on the second question

Answer:

[tex]x=-\frac{43}{3}[/tex]

Step-by-step explanation:

[tex]-4(6x+7)=-316 \\ \\ 6x+7=-79 \\ \\ 6x=-86 \\ \\ x=-\frac{43}{3}[/tex]

Answer:

x=12

Step-by-step explanation:

hope this helps! -4(6x + 7) = -316=x=12

The height of the arrow at 2.5 seconds is 71 feet.

Given:

An arrow released from a bow, traveling towards a target 200 yards away,reaches a max height of 42.6 ft in only 1.5 seconds.

1.5 seconds = 42.6 feet

divide by 1.5 on both sides.

1 sec = 28.4 feet

0.5 sec = 28.4/2

0.5 sec = 14.2 feet

2.5 sec = 1.5 sec + 1 sec

= 42.6 + 28.4

= 71 feet

Therefore The height of the arrow at 2.5 seconds is 71 feet.

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The measure of angle 4 is 121 degrees.

We know that the sum of all angles of triangle is 180 degrees.

∠1 + ∠2 + ∠3 = 180°

81° + 40° + ∠3 = 180°

∠3 = 180° - 121°

∠3 = 59°

We can observe that, angle 3 and angle 4 are linear angles.

So, ∠4 + ∠3 = 180°

∠4 = 180° - ∠3

∠4 = 180° - 59°

∠4 = 121°

Therefore, the measure of angle 4 is 121 degrees.

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The extra revenue generated by the mail is $2.14 billion

From the question, we have the following parameters that can be used in our solution:

Number of mails in a year = 107 billion pieces

Amount generated per mail = 2¢

From the above parameter, we can calculate the total amount generated using the following equation

The total revenue generated by the mail is calculated as

Amount generated = Number of mails in a year x Amount generated per mail

Substitute the known values in the above equation

So, we have the following equation

Amount generated = 107 billion x 2¢

Evaluate the product

Amount generated = 214 billion ¢

Express as dollars

Amount generated = $ 2.14 billion

Hence, the total amount is $2.14 billion

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The estimated cost of mail per year when the rate of postage is raised by 2¢ is

The problem require conversion of units and multiplication

The extra rate of for raising the postage is given to be 2¢

converting 2¢ to dollars gives $0.02

The rate is used to multiply number o f mails which is 107 billion

107 billion = 107 * 10^9, therefore

107 * 10^9 * 0.02

= 214 * 10^7

= 2.14 * 10^9

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The solution of the given one-variable equation as shown in the task content is; Choice B; - 1.25.

It follows from the task content that the solution of the given one-variable equation is to be determined.

Since the given one-variable equation is;

0.7h + 6 = 4 - 0.9h

By adding, 0.9h and subtracting 6 from both sides, we have;

0.7h + 0.9h = 4 - 6

1.6h = -2

h = -2/1.6

h = -1.25

On this note, it follows that the solution of the given equation is; h = -1.25.

Consequently, the answer choice which is correct about the solution of the given equation is; Choice B; - 1.25.

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Answer:

35h+180≤400

Step-by-step explanation:

You multiply 35 by the amount of hours the clown can be at the party (h) and add $180 for the amount of food, which should equate to less than or equal to $400. Hope this helps! :D

Please please PLEASE mark BRAINLIEST!! <3

Answer:

35h+180≤400

I did this question, and I got it correct.

The arrangement of the fraction from least to greatest is 5/11, 2/3 and 7/8.

A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers

The fraction can be changed to percentage to make it easier.

7/8 = 7/8 × 100 = 87.5%

5/11 = 5/11 × 100 = 45.5%

2/3 = 2/3 × 100 = 66.7%

The arrangement is 5/11, 2/3 and 7/8.

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The   proceeds  is  $7,566.67 and  the effective rate charged by the bank to the nearest is 6.87%.

Given data:

Principal = $8,000

Rate =6 1/2% or 6.5%

Term= 300 Days

a. Proceeds

Interest  = Principal  x Rate  x Time

Interest  = $8,000 x 6.50% x 300/360

Interest = $8,000 x 0.065 x 0.8333

Interest  = $433.33

Now let find the Proceeds:

Proceeds = $8,000 - 433.33

Proceeds = $7,566.67

b. Effective Interest Rate:

Effective Interest Rate = 433.33 / 7566.67 x 300/360

Effective Interest Rate = 433.33 / 6305.56

Effective Interest Rate = 0.0687 × 100

Effective Interest Rate = 6.87%

Therefore  $7,566.67 is the proceeds and 6.87% is the interest rate.

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Answer: The Answer would be -5 is greater.

Step-by-step explanation: The reason why is that if you had 1 and -2  the 1 would be more because it is not negative.

The income that this settlement  provide at the end of each month is: $813.20.

Monthly amount= $1.500,000 at the end of year 35 years.

Interest rate per month = 7.1/12 = 0.59167% per month

Total periodic cash flow = 35× 12 = 420

Hence,

Future value of annuity = X × [(1+ 0.0059167)^420 -1/ 0.0059167]

Future value of annuity =X × [(1.0059167)^420 -1/ 0.0059167]

Future value of annuity = X × [(1.0059167)^420 -1/ 0.0059167]

Future value of annuity = X × [11.913727 -1 / 0.0059167]

Future value of annuity = X ×  [10.913727 / 0.0059167]

Future value of annuity =X ×  1,844.5633

$1,500,000 = X × 1,844.5633

X = $1,500,000/  1,844.5633

X = $813.20

Hence,

Monthly payment is $813.20.

b. Since the cash flow occur at the end of every  period this means that this is an ordinary annuity.

Therefor $813.20 is the monthly payment.

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The rate change is $1.50 per miles

The one time pickup fee of every ride = $3.50

The rate charges for every miles traveled = $1.50

Consider the number of miles traveled = x

Then the equation will be

y = 1.50x + 3.50

Where y is the total cost

x is the number of miles traveled

The slope intercept from is

y = mx + b

Where m is the slope of the line

b is the y intercept

Comparing the slope intercept form the given equation

y intercept of the line b = $3.50

Slope of the line m = $1.50 per mile

Hence, the rate change is $1.50 per miles

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The leaking fruit juice container will get empty in 24.24 minutes

converting 2.5 quart to ounce

1 quart is equivlent to 32 fluid ounce, 2.5 quart will be ?

? = 2.5 * 32

? = 80 fluid ounces

The leakage is at 3.3  fluid ounces per minute to find how many minute it takes to leak 80 fluid ounces we calculate as below

3.3 fluid ounces = 1 minute

80 ounces = ?

cross multiplying gives

= 80 / 3.3

= 24.24 minutes

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The cost for each pound of almond is $3.25 and the cost of each pound of jelly beans is $1.5.

According to the question,

We have the following information:

For 4 pounds of almonds and 8 pounds of jelly beans, the total cost is $25. For 2 pounds of almonds and 3 pounds of jelly beans, the total cost is $11.

Now, let's take the cost of 1 pound of almond to be $x and that of jelly beans to be $y.

We have the following equations:

4x+8y = 25 ...(1)

2x+3y = 11

2x = 11-3y ...(2)

Putting this value of 2x in equation 1:

2(11-3y)+8y = 25

22-6y+8y = 25

22+2y = 25

2y = 25-22

2y = 3

y = 3/2

y = $1.5

Putting this value of y in equation 2:

2x = 11-3y

2x = 11-3*1.5

2x = 11-4.5

2x = 6.5

x = 6.5/2

x = $3.25

Hence, the cost for each pound of almond is $3.25 and the cost of each pound of jelly beans is $1.5.

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The area of the given polygon is  1830 cm².

A polygon is a closed more than two-sided and can be made up of a finite number of straight line segments and is a type of planar figure in geometry.

Each line of the polygonal circuit's segments is referred to as its edges or sides.

We know the area of a square is (side)² and the area of a rectangle is (length×width).

From the given diagram we can think of this polygon as a square having a side length of 46cm and a rectangle having a width (30 - 14) = 16cm and length 21cm, And subtract the area of the rectangle from the area of the square which is,

= (46×46) cm² - (16×21) cm².

= (2166 - 336) cm².

= 1830 cm².

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Answer:

  (a)  The graph has a domain of all real numbers.

  (d)  The graph has a y-intercept of (0, 1).

  (e)  The graph has an x-intercept of (-7, 0).

Step-by-step explanation:

You want to know the correct descriptors of the domain, range, slope, and intercepts of the graph of y = ∛(x-1) +2.

The domain of the cube root function is all real numbers. Hence the graph has a domain of all real numbers.

The range of the cube root function is all real numbers. Hence the graph is not restricted to a range of y ≥ 1.

The slope of the cube root function is positive everywhere. The graph of y is increasing as x is increasing.

The x-intercept is the value of x that makes y = 0.

  0 = ∛(x -1) +2

  -2 = ∛(x -1)

  -8 = (x -1)

  -7 = x . . . . . . . the x-intercept

The y-intercept is the value of y when x = 0.

  y = ∛(0 -1) +2

  y = -1 +2 = 1 . . . . . . the y-intercept

The true statements about the graph are ...

  (a)  The graph has a domain of all real numbers.

  (d)  The graph has a y-intercept of (0, 1).

  (e)  The graph has an x-intercept of (-7, 0).

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The time that it take the wevaer to complete 3 1/3 baskets is 5 days.

A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.

In this case, the weaver completes 2/3 of a basket each day. The time that it will take the wevaer to complete 3 1/3 baskets will be:

= Number of baskets / Number completed daily

= 3 1/3 ÷ 2/3

= 10/3 ÷ 2/3

= 10/3 × 3/2

= 5

It'll take 5 days.

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Step-by-step explanation:

this is a college question ????

and you don't know how to do it ? what happened to you in elementary school ?

there are many different techniques. everybody thinks theirs is the fastest or easiest to understand.

after all, this is just "playing" with numbers, the factors embedded within the dividend.

this is mine. when I was in elementary school, we called this the "long division" :

62.79 ÷ 23 =

we pick the first few positions from the left of the dividend, where we are sure, the divisor fits at least once.

in our case here : 62.

we do an integer divide of 62/23 = 2 (for 3 the dividend would have to be at least 69). this 2 is our first digit of the quotient.

62.79 ÷ 23 = 2

now we multiply the divisor by that digit and subtract the result from the dividend. this gives us a remainder of 16, and we pull down the next position (7) :

62.79 ÷ 23 = 2

- 46

---------

167

now, we pulled the first digit after the decimal point, and we need to set the decimal point there in our quotient :

62.79 ÷ 23 = 2.

- 46

---------

167

now, we repeat the process by integer dividing this new dividend (167) by the divisor (23)

167/23 = 7

this 7 becomes the next digit in our quotient. and we repeat the process of multiplying this by the divisor and subtracting the result from the dividend. this gives us a remainder (6), and we pull down the next digit (9).

62.79 ÷ 23 = 2.7

- 46

---------

167

- 161

----------

69

and again, we repeat by integer dividing the new dividend (69) by the divisor (23)

69/23 = 3

this 3 is the next digit in our quotient.

we multiply it with the divisor and subtract the result from the dividend.

if the remainder is still not 0, we need to repeat the process by pulling the next digit, which would be an invisible 0. and continue.

but luckily, after this the remainder is 0, and we are finished.

62.79 ÷ 23 = 2.73

- 46

---------

167

- 161

----------

69

- 69

--------------

0

so, 62.79 ÷ 23 = 2.73 and 0 remainder.

The number of hours that it will take Alonso to drive 288 miles is 12 hours.

Since Alonso was driving down a road and after 4 hours he had traveled 96 miles, the speed will be:

Speed = Distance / Time

Speed = 96 / 4

Speed = 24 miles per hour.

Therefore, the time taken for 288 miles will be:

Time = Distance / Speed

Time = 288 / 24

Time = 12

The time taken is 12 hours.

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Answer:

  8/9

Step-by-step explanation:

You want to know the least fraction of the distribution that lies between 61 and 79 if the mean is 70 and the standard deviation is 3.

Chebyshev's inequality tells you that at most 1/k² of the distribution will lie beyond k standard deviations from the mean.

Here, the given limits are (61 -70)/3 = -3 and (79 -70)/3 = 3 standard deviations from the mean. That is, we can use k=3 to find the maximum fraction that is beyond the interval [61, 79]. That fraction is ...

  1/k² = 1/3² = 1/9

Since this is the maximum fraction outside the given range, the minimum fraction inside the given range is ...

  1 -1/9 = 8/9

At least 8/9 of the number are between 61 and 79.

The amount engine oil which should be added to a jerry can that contains 4.3 gallons of​ gas is 0.172 gallons.

Given that arborist is preparing the fuel mix for her chainsaw before climbing a tree to remove a dead limb when two-stroke chainsaw requires a 4​% mix of engine oil to gas and the amount of oil should be 4​% of the amount of gas.

We want to find the amount of engine oil which should be added to a jerry can that contains 4.3 gallons of​ gas.

To find the amount of engine oil convert the mixture of engine oil to gas into decimal.

4%=4/100

4%=0.04

Now, we will multiply the above mixture with 4.3 gallons of gas is

4.3×0.04=0.172 gallons

Hence, the amount of engine oil which should be added to a jerry can that contains 4.3 gallons of​ gas when two-stroke chainsaw requires a 4​% mix of engine oil to gas is 0.172 gallons.

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The polynomial expressions are arranged from least to greatest based on their degree as: I, III, II, IV.

The degree of a polynomial expression can be described as the highest exponential power that the terms of a polynomial has.

For example, if we have the polynomial expression that is given as 5x³ + 2x² + 4, the highest power is 3, therefore, the degree of the polynomial is 3.

Thus:

The degree of x + 2xyz is one.

The degree of 9x³y² is three.

The degree of 18x² + 5ab − 6y is two.

The degree of 4x^4 + 3x² − x − 4 is four.

Therefore, from least to greatest, we have: I, III, II, IV.

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The value of 6204 ÷ 4 is 1551

The division is one of the basic arithmetic operations in math in which a larger number is broken down into smaller groups having the same number of it. For example if 30 mangoes are to be shared between 6 students. It shows that 5 mangoes will be given to each student. i.e 30/6= 5

the value of 6204/4 can be obtained by using long division:

4 in 6 gives 1 remainder 2

4 in 22 gives 5 remainder 2

4 in 20 gives 5 remainder 0

4 in 4 gives 1 remainder 0

Therefore the value of 6204/4 = 1551

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At a z-score of 1.80, the percentage of the scores that are better than yours is equal to 3.59%.

In Mathematics, a z-score is sometimes referred to as a z-value or standard score and it can be defined as a measure of the distance between a raw score and the mean, when standard deviation units are used.

Mathematically, the z-score of a given sample score in a normal distribution can be calculated by using this formula:

Z-score = (x - μ)/σ

Where:

Since a score of 85 on a test corresponds to a z-score of 1.80, the percentage of the scores that are better than yours is given by:

P(x > 85) = P(z > 1.80)

P(z > 1.80) = 0.0359

P(z > 1.80) = 3.59%.

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