please help me. i need answers asap. please correct answers

Answer:

B) x²+2x-35=0; the factors are (x+7)(x-5)

Step-by-step explanation:

The quadratic equation which has the solutions as x = -7 and 5 may be x² + 2x - 35 = 0, the factors are (x + 7) and (x - 5) and (x + 7)(x - 5) = x² + 2x - 35.

Quadratic equations are polynomial equations of second degree.

The general form of a quadratic equation is ax² + b x + c = 0.

Given that,

a quadratic equation has the solutions x = -7 and 5.

There are two options, x² + 2x - 35 and x² - 2x - 35

Using the factorization method, a quadratic equation ax² + b x + c = 0 can be factored as (x + p)(x + q) where pq = c/a and p + q = b/a.

Consider, x² + 2x - 35 = 0

There are numbers 7 and -5 that 7 - 5 = 2 and 7 × -5 = -35

So it can factored as,

(x + 7) (x - 5) = 0

Solutions are x = -7 and x = 5

Hence the quadratic equation is x² + 2x - 35 = 0.

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Answer:

See below

Step-by-step explanation:

1   put in  16 for x

   5/4 (16) + 7 = 27 pounds  at 16 months  

2  5/4 would be the pounds an infant should put on each month

3  7 would be when the infant is born ( x = month 0)     7 pound birthweight

Answer:

See below

Step-by-step explanation

Step-by-step explanation:

1   put in  16 for x

  5/4 (16) + 7 = 27 pounds  at 16 months  

2  5/4 would be the pounds an infant should put on each month

3  7 would be when the infant is born ( x = month 0)     7 pound birthweight

Answer:

Put both equations into standard form (Ax+By=C).

Multiply one or both of the equations by a number so that you will have opposite coefficients on the same variable.

Add the two equations together. Add the x's, the y's, and the numbers.

Solve for the variable.

Take your answer from the last step and plug it into of the equations (pick the one that looks easiest).

Your solution will be in the form of a coordinate point (x,y).

Step-by-step explanation:

Answer:

5/8 63% or .625

Step-by-step explanation:

Done.

When referring to a dot plot, scatter graph, or scatter plot such as this one, the line that represents the averages of all Y values is known as a line of best fit.

Hope this helps,

Jeron

:)

Answer:

When referring to a dot plot, scatter graph, or scatter plot such as this one, the line that represents the averages of all Y values is known as a line of best fit.

Step-by-step explanation:

Answer:

5. Area = 28.5 cm; 6. Area = 544,500 cm

Step-by-step explanation:

Area = Length×Width

5. You have to convert the mm to cm by dividing the mm by 10. Then just multiply the length and width.

6. Same thing; different unit, convert the m to cm (or vice versa, not sure which unit you need to answer in) and multiply the length and width.

Answer:

5. Area = 28.5 cm; 6. Area = 544,500 cm

Step-by-step explanation:

The different ways can the offices be assigned will be 36.

The arrangement of the different things or numbers in a number of ways is called the combination.

It is given that:-

The number of the different ways are:-

[tex]^9C_2=\dfrac{9!}{(9-2)! \times 2!}[/tex]

[tex]^9C_2=\dfrac{9!}{(7)! \times 2!}[/tex]

[tex]^9C_2=\dfrac{9\times 8 \times 7!}{(7)! \times 2!}[/tex]

[tex]^9C_2=\dfrac{9 \times 8} 2}\ =36[/tex]

Therefore the different ways can the offices be assigned will be 36.

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Answer:

1.68% of people would want a longer day

20% of people would want more foreign languages

24.6% of people would want more science

25.8% of people would want longer lunch

27.92% randomly selected

Step-by-step explanation:

Answer:

  (c)  -2/5

Step-by-step explanation:

A "zero" or "root" or "x-intercept" of a function is a value of the independent variable (x) that makes the function (f(x)) have a value of zero. It is found where the graph of the function crosses the x-axis.

A quadratic function will have two (2) zeros. If they are different, one will be smaller than the other (leftmost on the number line).

You may recognize that 25x² and 4 are both perfect squares, (5x)² and 2², respectively. That means the expression (25x² -4) is the difference of squares.

The difference of squares is a special polynomial form, useful for the way it factors:

  a² -b² = (a -b)(a +b)

Here, that means the factored form of f(x) is ...

  f(x) = (5x -2)(5x +2)

The "zero product rule" says a product can only be zero if one or more factors is zero. This is exceptionally useful for determining the zeros of a polynomial function from its factored form.

It tells us f(x) = 0 only when one of (5x-2) = 0, or (5x+2) = 0. These are simple equations to solve to find the corresponding values of x:

  5x -2 = 0   ⇒   5x = 2   ⇒   x = 2/5

  5x +2 = 0   ⇒   5x = -2   ⇒   x = -2/5

The above tells us the zeros of f(x) are -2/5 and 2/5. These values of x make f(x) = 0. The smaller zero is the one that is more negative: -2/5.

  smaller zero: -2/5

__

Additional comment

A polynomial may have complex zeros. Only the real zeros will be x-intercepts on a graph of the function. Complex zeros must be found another way, not by graphing.

Answer:

B. 2nd Play and B. 2nd Play

Step-by-step explanation:

#1) Going negative means going backwards.

-8<10.5

#2) Absolute value means making all numbers INSIDE the two lines positive.

I-8I = 8

I10.5I = 10.5

Answer:3

Step-by-step explanation:

Answer:

$537.50

Step-by-step explanation:

So . .

Then . .

7.5 is for 1 year so

Then just add 37.50 to 500

Answer: He will have 3750 in 5 years.

Step-by-step explanation: You need to do 500x1.5x5. 500 dollars is the amount in the account. 1.5 is the interest. 5 is the amount of years.

Answer:

2

Step-by-step explanation:

The range of probability of an event lies between 0 and 1.

Hence, 2 cannot be the probability.

Answer:

1) cash

2) automatic payment

Answer:

642.96

Step-by-step explanation:

To find the surface area"

[tex]SA=2lw+2lh+2wh[/tex]

Insert measurements into the equation:

[tex]SA=2*17\frac{2}{5}*3+2*17\frac{2}{5}*13.2+2*3*13.2[/tex]

Now to go through the very tedious steps of actually solving the equation (we got this!)

Next: Addition

And we have our answer!

I hope this helps and please feel free to comment, give feedback, ask questions, and correct me if I am wrong!

Have a great day

:)

1) 70%

2) 62.5

3) GREATER THAN

Answer:

32%

20%

greater than

Step-by-step explanation:

The experimental probability of the event is  32% and the theoretical probability of the event is  20%. Therefore, the experimental probability is  greater than the theoretical probability.

Answer: 4 inches

Step-by-step explanation: 1,944 / 18/ 9 / 1/3 = 4

Based on the calculations, the height of this pyramid is equal to: D. 36 inches.

Given the following data:

Mathematically, the volume of a pyramid is calculated by using this formula:

Volume = 1/3 × b × h

Where:

For the base area, we have:

Base area = length × breadth

Base area = 18 × 9

Base area = 162 square inches.

Substituting the given parameters into the formula, we have;

1,944 = 1/3 × 162 × h

1,944 = 54h

h = 1,944/54

Height, h = 36 inches.

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Answer:

It would be 1/4 or 25%

Step-by-step explanation:

done this before

Answer: 1/3

Step-by-step explanation:

The correct answer to this question is a 1/3.

Hope this helps a lot of people (please like and give brainliest)!

Answer:

O. - 0.543..., - √2, - 3√9, -√12

Step-by-step explanation:

#KEEP ON LEARNING :)

Answer: 3 is the correct

Step-by-step explanation:

The factors of 18 are 1,18,2,9,3,6

The factors of 21 are 1,21,3,7

They both have three that goes into each number so that is your answer

Answer:

B

Step-by-step explanation:

divide 4 and 12 by 4 and get 1/3

Answer:

3 kg of copper,

1.25 kg of nickel,

0.75 kg of zinc.

Step-by-step explanation:

i'm assuming you copied the question wrong and that the right metals are, copper, nickel* and zinc.

here's an explanation~

copper ; 12 x 1/4 = 3 kg

nickel ; 5 x 1/4 = 1.25 kg

zinc ; 3 x 1/4 = 0.75 kg

i hope this was helpful! <3

Answer: She will be walking south or 90 degrees

Step-by-step explanation:

She walks ten spaces forward from where she started meaning the east

She turns 45 degrees left which places her at northeast

The walking doesn't affect her direction

So look at it like -45+25+110

This equals 90 degrees or south.

Answer:

Step-by-step explanation:

Answer:

answer is A cause white cars are cheaper

Step-by-step explanation:

they are cheaper than colored cars

Answer:

I would say c

Step-by-step explanation:

In the chart given when you compare the blue and silver cars, you can notice that the silver cars are twice the amount sold than the blue cars

The answer is 1/4

Step-by-step explanation:

All you had to do was make 1/3, 4/12 subtract 7/12 by 4/12 = 3/12 or 1/4!

Answer:for the 3rd ques the answer is number 2

Step-by-step explanation: