Please answer correctly

Answer:

I think it is 42.98

Step-by-step explanation:

Answer:

i think this is all it is lol

6 : blue

2 : yellow

4 : red

4 : green

Answer:

1.83 square feet

Step-by-step explanation:

42/23=1.83

She paints her bedroom at the rate of 1.83 square feet per hour.

Given that,
Caitlin is painting her bedroom. She paints 42 square feet in 23 hours. At this rate, how many square feet can she paint in one hour is to be determined.

The rate of change is defined as the change in value with the rest of the time is called the rate of change.

The ratio can be defined as the proportion of the fraction of one quantity towards others. e.g.- water in milk.

Here,
She paints 42 square feet in 23 hours.
Area painted = 42 square feet
time = 23 hours
Rate = area painted  / time
         = 42 / 23
         = 1.83

Thus, she paints her bedroom at the rate of 1.83 square feet per hour.

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Answer:

ggg

Step-by-step explanation:

Answer:

I think it's 68

Step-by-step explanation:

hope this helps

Answer:

2255÷86=26

4309÷43=100

7944÷15=529.6

Step-by-step explanation:

I dont have step by step srry

Answer:

It is 12boys:13girls

Step-by-step explanation:

The total is 250 out of which 130 are girls. So it is 250-130 which is 120boys. Now to find the ratio it is 120:130 which in its simplest form is 12 boys:13 girls.

Answer:

60,000

Step-by-step explanation:

Evalute

6 x 10*4

6 x 10,000

60,000 is the standard form :)

Answer:

10,000

Step-by-step explanation:

10x10x10x10=10,000

Answer: The percentage change is 16%.

Step-by-step explanation:

February:

4,100 water bottles.

March:

(4,100 + 7/100 x 4,100) water bottles

(4,100 + 287) water bottles.

4,387 water bottles.

April:

(500 + 4,387) water bottles.

4,887 water bottles.

= (4,887 - 4,100) / 4,887 x 100

= 787/4,887 x 100

= 16%

The percentage change is 16%.

Answer:

1st one 8/20

Step-by-step explanation:

Step-by-step explanation:

I think the answer should be C

Answer: A

(2, -4) and (0,4);

x, y             x, y

A. y = -4x +4; substitute the pairs

(2,-4)

-4 = -4(2) + 4 = -4; -4 = -4

(0,4)

4 = -4(0) + 4 = 4; 4 = 4

B. y = -4x - 4

(2, -4)

-4 = -4(2) - 4 = -12; -12 ≠ -4

(0,4)

4 = -4(0) - 4 = -4; -4 ≠ 4

C. y = 4x - 4

(2, -4)

-4 = 4(2) - 4 = 4; 4 ≠ -4

(0,4)

4 = 4(0) - 4 = -4; -4 ≠ 4

D. y = 4x + 4

(2, -4)

-4 = 4(2) + 4 = 12; 12 ≠ -4

(0,4)

4 = 4(0) + 4 = 4; 4 = 4

Answer A works out for both ordered pairs.

Step-by-step explanation:

all you need to do is multipy all the numbers together

Answer:

$2.6775

They refilled it 5 times

Step-by-step explanation:

Info we already know = . They shared a large popcorn

. It costs $3.15 to buy it and $0.85 for a refill

. They spend $7.40

3.15 x 0.85 = $2.6775

Explain: All you have to do is multiply 3.15 x 0.85 to get the answer, which is, $6.775. To check, you can do the inverse operation, which is, Division. So, with that being said, 2.6775 divided by 0.85 = $3.15.

I just explained so you can have a better understanding!

Answer:

They refilled their popcorn 5 times.

Step-by-step explanation:

First, set up an equation.

y = mx + b

y is the total money spent

m is the cost for each refill

x is the amount of times the popcorn is refilled

b is the start price / the price to buy the popcorn

7.40 = (0.85)x + 3.15

To solve for x, first subtract 3.15 from both sides.

4.25 = 0.85x

Now to isolate x, divide both sides by 0.85.

x = 5

They refilled their popcorn 5 times.

Before moving on, check your answer by plugging in x = 5 into the original equation.

7.40 = (0.85)(5) + 3.15

7.40 = 4.25 + 3.15

7.40 = 7.40

Your answer is correct.

Answer:

The result of this dilation is an enlargement. The scale factor is 3.

Step-by-step explanation:

The original figure has coordinates (0,0), (1,0), (2,0), (2,1), and (1,1). The dilated figure has coordinates (0,0), (3,0), (6,0), (6,3), and (3,3). Notice that the distances between corresponding points in the original and dilated figures are all multiples of 3. This means that the dilation has a scale factor of 3.

In general, a dilation is an enlargement if the scale factor is greater than 1, a reduction if the scale factor is less than 1, and a congruent image if the scale factor is equal to 1.

Answer:3

Step-by-step explanation:

It follows from the double angle identity for sine,

sin(2x) = 2 sin(x) cos(x),

that

2 cos(75º) sin(75º) = sin(2•75º) = sin(150º)

Alternatively, recall that

sin(x + y) = sin(x) cos(y) + cos(x) sin(y)

sin(x - y) = sin(x) cos(y) - cos(x) sin(y)

Adding these together gives

sin(x + y) + sin(x - y) = 2 sin(x) cos(y)

Set x = y = 75º; then

2 sin(75º) cos(75º) = sin(75º + 75º) + sin(75º - 75º)

2 sin(75º) cos(75º) = sin(150º)

2 cos 75° . Sin 75° = Sin 150°

Notice:

Sin 150 º = Sin 30°

See that Sin 75° = Cos 15°

Cos 75° = Sin 15°

So :

2Cos 75° . Sin 75° = 2 Sin 15°Cos°15 = Sin 30°

Answer:

4 ft

Step-by-step explanation:

A square is equal in length on all sides so if the side length is 2 then all the sides are 2. Finding the perimeter is LxW meaning in this instance 2x2 which equals 4. Hope this helps.

Here are the pairs matched with their products:

- (-5)(4.2) matches with -21

- (-7)(-3) matches with 21

- (2.5)(-9) matches with -22.5

Pairs (4) and (5) do not have corresponding products in the given options.

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Answer:

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Step-by-step explanation:

Answer:

29

Step-by-step explanation:

The amounts greater than 40 cents can be formed.

After dividing one number by another, the modulo operation yields the remainder or signed remainder of the division.

Given:

According to the situation the equation can be

C = 5x + 11y, where x and y are non negative integers.

Now, We will fix y-values first, because there are fewer indices modulo 5:

y = 0 --> 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55,... 5y

y = 1 --> 11, 16, 21, 26, 31, 36, 41, 46, 51, 56,... 5y + 11

y = 2 --> 22, 27, 32, 37, 42, 47, 52, 57, ...5y + 22

y = 3 --> 33, 38, 43, 48, 53, 58, ...5y + 33

y = 4 --> 44, 49, 54, 59, ...5y + 44

Then, 39 may be verified to be the smallest number that is impossible to obtain.

By examining each index (0, 1,..., 4), we may demonstrate this by observing that for y = 1, 6 is the largest positive integer congruent to 1 mod 5 that cannot be made, 17 is the largest positive number congruent to 2 mod 5, etc.

The largest of these improbable numbers is 39.

We could say that since 40, 41, ..., 44 are all obtainable, then we can induct by adding a multiple of 5 (i.e. if k is possible, so is k+5),

Hence, all amounts greater than 40 cents can be formed.

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Answer:

x=2

Step-by-step explanation:

In the table the ratio of x to y in the first one is 0:2 and ongoing.

Answer:

\(f\left(x\right)=\ 2\left(2\right)^{x}\)

Step-by-step explanation:

Step 1: Make a equation, f(x)= ab^x.

A is the y value, whenever the x value is zero. So, a is 2.

Lets put that in our equation:

f(x)= 2b^x.

B is the common ratio on the y values. When you follow the pattern, 2, 4, 8, 16, you realize that the common ratio is 2. 2*2 is 4, 4*2, is 8, 8*2 is 16, and so on. So the common ratio is 2.

Lets go ahead and add that to our equation:

f(x)= 2(2)^x.

There is no more steps in this process, so that is actually your final answer:

\(f\left(x\right)=\ 2\left(2\right)^{x}\)

Hope this helps :)

-jp524

Answer:

x is 5 

Step-by-step explanation:

Answer:

y= -5x+3/5

Step-by-step explanation:

start by finding the y value, because it is on the y axis it's -5. next find the rise so in this case it is 3 then find the run it is 5, put the rise and run in fraction form 3/5 (remeber rise over run) and you get the awnser y= -5x+3/5

So here the 'unit rate of change' means the slope. It's also referred to as 'rise over run'. A line can be expressed in the form y=mx+b, where m is the slope and b is the y intercept. So here, m is equal to 0.4 and the line is y=0.4x

Think of it this way: if you plug in 1 for x, you get 0.4 for y. So that matches what the problem was saying about a change of 1 unit in x means 0.4 units in y. To graph it, start at 0,0 and move 0.4 up in y direction (rise) and 1 to the right in the x direction (run). If you keep doing that and connect the points, that will be the line

Answer: a, c, d, and e

Step-by-step explanation:

I'm 95% sure these are correct other people can double check...

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The answer is 8 so its a direct proportion

I think...

The constant of Proportionality is 8.

If the ratio of one variable to the other is constant, then there is a proportional relationship between the two variables. If x and y are in a proportional relationship, then the ratio of y to x is the constant of proportionality. We can also express it as x is to y at times.

Given:

Total Baseball Caps= 30

Total amount of Cap= $240

let the number of caps sold be c.

Then, the equation is

30 c= 240

and, c= 240/30

c= 8

Hence, the constant of Proportionality is 8.

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