Aurora raised money for a white water rafting trip Jacy made the first donation Gillermo’s donation was twice Jacy’s donation Rosa’s mother tripled what Aurora had raised so far now Aurora has $120. how much did Jacy donate?

Help please!!!

We are given the following function

We are asked to find out the value of t which results in f(t) = 64

Let us substitute f(t) = 64 into the above function and solve for t

Therefore, the value of t is 96

Teh ratio of boys to girls in JAnice's classroom is 3:5

Total number of students 32

Let the ratio constant is K

So,

The equation will be

3K + 5K=32

8K=32

K=32/8

K=4

So,

the boys will be

4 + 4 + 4 =3K =12

The number of girls will be :

4 + 4 + 4 + 4 + 4 = 5K =20

Answer:

2m(-4.2m)

-4.2[tex]m^{2}[/tex] + - (4.2[tex]m^{2}[/tex])

-8.4[tex]m^{2}[/tex]

Step-by-step explanation:

2m(-4.2m) = -8.4 [tex]m^{2}[/tex]

-4.2 [tex]m^{2}[/tex] + (-4.2 [tex]m^{2}[/tex]) = 8.4[tex]m^{2}[/tex]

The width of the combined three panels when installed next to each other is  [tex]37\frac{7}{8}[/tex] inches.

In order to determine the width of the three combined panels, multiply the width of one fluorescent lighting panel by the total number of panels.

Multiplication is the mathematical operation that is used to calculate the product of two or more numbers. The sign that represents multiplication panel is ×.

Width of the combined panels = width of one panel x number of panels

[tex]12\frac{5}{8}[/tex] × 3

[tex]\frac{101}{8}[/tex] x 3 = [tex]\frac{303}{8}[/tex] = [tex]37\frac{7}{8}[/tex] inches

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Given:

The length of each ribbon is 25 cm.

The number of ribbon need by mother is 6.

Explanation:

Determine the length of ribbon for daughter's hair.

Since length is in decimal so we need to find multiple of 25 such that it is more than 150 and multiple of 100.

The multiples of 25 are 25,50, 75, 100, 125, 150, 175, 200, ...

Since 200 is more than 150 and multiple of 100 also.

Determine the length of 200 cm in terms of meters.

So mother needs to buy 2 meters of ribbon.

Answer: 2 meters

The coefficient of the GCF of a set of algebraic terms, wil be the GCF of the coefficients of the terms.

Notice that the coefficients in this case, are 30 and 60.

The greatest comon factor of this set, is 30, since:

On the other hand, the variable x appears with an exponent of 5 in one case and an exponent of 3 in the other case. The greatest common factor for the variable x will be the lowest power, in this case, 3. Notice that:

Then, we can factor out the following:

Notice that each term can be written as a product of this factor:

Therefore, the greatest common factor (GCF) is:

ANSWER

EXPLANATION

Let the length of the rectangle be L.

Let the width of the rectangle be w.

The length of the rectangle is 3 more than twice the width.

This means that:

L = 3 + (2 * w)

L = 2w + 3

The perimeter of a rectangle is given as:

P = 2w + 2L

The perimeter of the rectangle is 96 inches. This means that:

96 = 2L + 2w

Recall that: L = 2w + 3

=> 96 = 2(w) + 2(2w + 3)

=> 2(w) + 2(2w + 3) = 96

Given the function :

So, the decay percentage rate :

convert the decimal to percentage: 0.75 = 75%

So, the answer is option A) 75%

The number of tiles required to cover the floor is 2880 tiles.

To solve this problem, we can find the number of tiles by calculating the area of a rectangle:

We have to convert the dimensions from feet to inches will be

1 feet = 12 inches

12 feet = 12 * 12  = 144in

15 feet = 12 * 15  = 180in

The area of the rectangle can be calculated as:

A = l * w

A = 180 * 144

A = 25920in²

The tiles are 9 squared inches, we can divide the area by 9 to find the number of tiles needed:

25920/9=  2880

Hence, The number of tiles needed will be 2880 tiles

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ok

Volume of a cilinder = pi*r^2*h

Substitution

Volume of a cilinder = 3.14*3^2* 6

Simplification

Volume of a cylinder = 170 ft^3

Approximately, there are 180 ft^3 of oil

She made an initial deposit that we will call "D", as it is one of the unknowns.

We know that she made a weekly deposit (lets call this amount "w").

After 4 weeks she had $450 in the account balance and this is the sum of the initial deposit and 4 weekly deposits, so we can write:

At the ninth week she had $825, that correspond to the initial deposit and 9 weekly deposits. This can be written as:

We have a system of linear equations that we will solve by elimination: we will substract the first equation from the second and then find w.

Now that we know "w", we can calculate D with any of the two equations:

Answer: the initial deposit was $150.

Let's evaluate the given expression:

Therefore, the answer is 10.

Answer:

Since one line is vertical, and one line is horizontal, the lines are perpendicular.

Step-by-step explanation:

The product of the slopes of perpendicular lines is -1.

We find the slopes of the 2 lines and multiply them together.

If the product equals -1, then the lines are perpendicular.

To find the slopes of the lines, we write each equation in the y = mx + b form, where m is the slope. In other words, we solve each equation for y.

3x + y = 7 + y

Subtract y from both sides.

3x = 7

x = 7/3

This is not the y = mx + b form since there is no y in the equation. A line with equation x = k, where k is a number, is a vertical line that passes through the point (k, 0), and the x-coordinate of all points on the line is k.

3(x + y) = 2 + 3x

3x + 3y = 2 + 3x

Subtract 3x from both sides.

3y = 2

y = 2/3

y = 0x + 2/3

Slope = m = 0

A line with 0 slope is a horizontal line.

Since one line is vertical, and one line is horizontal, the lines are perpendicular.

Solution

For this case we have the following random variable:

X= amount spend on average for groceries by one person

And we have the following properties:

mean= 52

sd= 14

The distribution of the variable is normal

We can find the middle 50% using a graph like this one:

We can find two quantiles from the normal distribution that accumulates 25% of the area on each tail of the distribution and we have:

Z= -0.674 and 0.674

Now we can use the z score formula given by:

So then we have:

Minimum= 52 - 0.674*14 = 42.56

Minimum= 52 + 0.674*14 = 61.44

Answer:

-5

Step-by-step explanation:

When having an ordered pair, we say they are in direct variation if the quotient:

is constant. For case 1 we have:

we can solve for "x" by multiplying by "x" on both sides:

Now we multiply by 32/80 on both sides:

Solving the operations we get:

For case 2 we have:

Now we solve for "y" by multiplying by 20 on both sides:

Solving the operations:

MATHEMATICALLY WE SAY

BE AWARE THAT EIGHTHS IS

[tex] \frac{1}{8} [/tex]

THEY ARE ASKING HOW MANY

[tex] \frac{1}{8} [/tex]

ARE THERE IN

[tex] \frac{1}{4} [/tex]

[tex] = \frac{1}{4} \div \frac{1}{8} \\ = \frac{1}{4} \times \frac{8}{1} \\ = \frac{8}{4} \\ = 2[/tex]

Answer:

y = 6

Step-by-step explanation:

y= [tex]\frac{1}{x}[/tex]

3 = [tex]\frac{1}{4}[/tex]k  Solve for k by multiplying both sides by 4

12 = k

y = [tex]\frac{1}{2}[/tex](12)

y = [tex]\frac{12}{2}[/tex]

y= 6

For the first place, we have 9 different options from the athletes, then for the second place, we would only have 8 different options, therefore, there are 9x8=72 ways they can finish first or second

Explanation

Step 1

To solve the inequality means to find a range, or ranges, of values that an unknown g can take and still satisfy the inequality.

so

it means the solution is the set of values equal or smaller than 3.772,so

Part A:

Step 2

Part B:the graph of the inequality looks like a marked line in the number line, from3.772 to negative infinite, as the symbol is smaller or equal, the number3.772 is part of the set , so we use a filled circle

Step 3

in step 1 we used the addition property of inequality to isolate x, then in step 2 we draw the set solution .

I hope this helps you

To find the standard deviation of this set of numbers, we will use the formula

let us explain the parts of this formula, as follows:

We will proceed by parts, the first thing to do is find the mean of the data

Calculating the mean

To find the mean, we will sum all the numbers and divide by the total quantity of numbers, as follows:

That is, the mean of the set is 43. Now we proceed to find the difference between the data and the mean, and the add them to the power of two, in symbols we have:

Now we introduce this result into the formula for the standard deviation, we find:

That is, after approximate to the nearest tenth, we found that the standard deviation of the set of numbers is 2.8

Answer:

70.4

Step-by-step explanation:

c = 2[tex]\pi[/tex]r

c = 2(3.142)(11.2)

c = 70.3808  Rounded to 1 decimal place

c = 70.4

Answer:

4.6

Explanation:

The diagram shown is a right triangle having the following sides;

Opposite = 17

Adjacent = x

Angle of elevation = 75 degrees

Using SOH CAH TOA identity

Tan theta = opposite/adjacent

Tan 75 = 17/x

x = 17/tan 75

x = 17/3.73205

x = 4.6

Hence the value of x to the nearest tenth is 4.6

The elements of the set given by A∩B is {12,18} .

Set theory, a branch of mathematical logic, studies sets, which are essentially collections of objects.

Despite the fact that every form of object may be turned into a set, set theory is a branch of mathematics that primarily deals with issues that are relevant to mathematics as a whole.

The foundation of set theory is a straightforward binary link between an object o and a set A.

If o is a component (or member) of A, it is expressed as o A. When listing members of a set, commas are used to indicate their separation, or brackets are used to surround a property of those parts.

Since sets are objects, they can be connected by the membership relation.

Given set U = {11,12,13,14,15,16,17,18,19,20}

A = {12,14,16,18,20}

B = {12,15,18}

A∩B = {12,18}

A∪B = {12,14,15,16,18,20}

A' = {11,13,15,17,19}

Therefore the elements of the set given by A∩B is {12,18} .

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So, we are writing a function. c(x) is the manufacturing costs, and x is the amount of bikes manufactured. The y-intercept is 1908 because when no bikes are manufactured it still costs 1908 to run the factory. The slope is 75 because it costs $75 to create a bike. So, y = mx + b, where m is the slope and b is the y-intercept is:

c(x) = 75x + 1908

Answer:

Explanation:

a) To draw the 1st , 5th and 6th figures, we need to know the count of squares

For the first figure, we would have 3 squares

The fifth figure would have 35 squares

The sixth figure will have 48 squares

The way to get this is to add 2 to the odd number difference between the last two terms

b) Here, we want to know how the pattern is changing

From the information provided, the first pattern has 8 squares, the second has

15 squares while the last has 24 squares

We can have a formula as follows: