You guys can help me plz idc if you explain

Answers

Answer 1

Answer: Y=Mx+b is the answer for 15 I think

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Three of four numbers have a sum of 22. If the average of the four numbers is 8, what is the fourth number?

Answers

$a+b+c=22\n \n (a+b+c+x)/(4)=8\n \n a+b+c+x=32\n \n 22+x=32\n \n \boxed{x=10}$

Answer:

Step-by-step explanation:

Let's call the four numbers x1, x2, x3, and x4. Their average is (x1 + x2 + x3 + x4)/4 = 8, so x1 + x2 + x3 + x4 = 4 × 8 = 32. And we know that three of the numbers have a sum of 22, so x1 + x2 + x3 = 22.

Subtracting this last equation from the first equation, we have:

$\sf:\implies{x4 = 32 - (x1 + x2 + x3) = }$

$\sf:\implies{32 - 22 = 10}$

So the fourth number is 10.

When a bill is not paid by the due date, a late fee is added each month until the bill is paid. The values in the table represent the total amount due, in dollars, for each month that a payment remains overdue.Months | Total due
2 300
5 375
10 500
Using x for the number of months overdue and y for the total amount due, in dollars, construct a linear function that describes the relationship between the number of months the bill is overdue and the total amount due. Enter the equation of the function in the box

Answers

The total amount due, in dollars, is an illustration of a linear function

The equation of the function is $y = 25x + 250$

Represent the month with x, and the total due with y.

Start by calculating the slope (m) using:

$m = (y_2 -y_1)/(x_2 -x_1)$

So, we have:

$m = (375 - 300)/(5 - 2)$

Simplify

$m = (75)/(3)$

Divide 75 by 3

$m = 25$

The linear equation is then calculated as:

$y = m(x - x_1) + y_1$

So, we have:

$y = 25(x - 2) + 300$

Open bracket

$y = 25x - 50 + 300$

Add 300 to -50

$y = 25x + 250$

Hence, the equation of the function is $y = 25x + 250$

Read more about linear equations at:

brainly.com/question/4074386

A total of 60 children signed up for hockey. There were 3 boys for every 1 girl who signed up. How many of the children who signed up for hockey were girls?

Answers

Answer: The answer is 15.

Step-by-step explanation: Given that there are a total of 60 students who signed up for hockey, where there were 3 boys for every 1 girl who signed up. We are to find the number of girls who signed up.

The ratio of the number of boys to the number of girls will be 3 : 1.

Let '3x' and 'x' be the number of boys and number of girls respectively who signed up.

Therefore, we have

$3x+x=60\n\n\Rightarrow 4x=60\n\n\Rightarrow x=15.$

Thus, the number of girls is 15.

60÷(3+1)=15 1*15 = 15 girls 3*15 = 45 boys

The value of √-9 is not -3 because_______.A. 9^2 not congruent to -3
B. (-3)^2 not congruent to -9
C. 3^2 not congruent to -9
D. (-9)^2 not congruent to -3

Answers

B, because -3^2 is not -9. -3*-3 = 9, square roots of negative numbers aren't possible, because no number squared can be equal to them. Instead, they are expressed in terms of "i", which is defined as

i^2 = -1

The value of √-9 is not -3 because B. (-3)^2 not congruent to -9.

This is the answer because, (-3)^2 = 9 NOT -9. Any negative squared is equal to the positive squared. E.g. 2^2=4 & (-2)^2=4. Another tip is that in the number in the square root sign is negative the answer is no solution as it is impossible to square a number and get a negative answer.

The sum of three fourths of a number and 1 is -5

Answers

We need to give the mystery number an easy name so that
we can work with it. Let's call it it ' M ' , for 'mystery number'.

The number . . . . . . . . . . . . . M
3/4 of it . . . . . . . . . . . . . . . . . 3/4 M
the sum of 3/4 of it and 1 . . . (3/4 M + 1)

You said that sum is equal to -5 .
OK. The equation we need to solve is

   3/4 M + 1 = - 5

Subtract 1 from each side: 3/4 M      = - 6

Multiply each side by 4 : 3 M      = -24

Divide each side by 3 :     M      = - 8

Does it work ?

Check it :

-- Assume the mystery number is . . . -8 .
-- 3/4 of the number . . . . . . . . . . . . . - 6 .
-- sum of 3/4 of the number and 1 . . . -5 <== yay !

Answer:

We need to give the mystery number an easy name so that we can work with it. Let's call it it ' M ' , for 'mystery number'.The number . . . . . . . . . . . . . M3/4 of it . . . . . . . . . . . . . . . . . 3/4 Mthe sum of 3/4 of it and 1 . . . (3/4 M + 1)You said that sum is equal to -5 .OK. The equation we need to solve is 3/4 M + 1 = - 5Subtract 1 from each side: 3/4 M = - 6Multiply each side by 4 : 3 M = -24Divide each side by 3 : M = - 8Does it work ?Check it :-- Assume the mystery number is . . . -8 .-- 3/4 of the number . . . . . . . . . . . . . - 6 .-- sum of 3/4 of the number and 1 . . . -5 <== yay !

Step-by-step explanation:

If the base of a rectangle is 12cm and the area is 250.8cm2 what is the height of the rectangle

Answers

250.8cm^2/12cm= 20.9cm.
the height of the rectangle is 20.9 cm

250.8cm^2/12cm = 20.9cm
the height of the rectangle is 20.9cm

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