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2 years ago

Solve the system of equations. 9x + 4y = 6 9x + 5y = -33 X = y =

Mathematics

1 answer:

Alekssandra [29.7K]2 years ago

7 0

Answer x= 18 y=-39

Step-by-step explanation:

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Is this question dealing with surface area or volume?? (Don’t mind the w•l•h)

marin [14]

Answer:

Step-by-step explanation:

First you must find the number of cubic feet in the pool. (That's volume)

Formula

V = l*w*h

Givens

l =38
w = 22
w = 8

Solution

Volume

V = 38 * 22 * 8

V = 6688 cubic feet.

Gallons

1 cubic foot = 7.5 gallons

6688 ft^3 = x

Proportion

1/6688 = 7.5 / x Cross Multiply

x * 1 = 7.5 * 6688

x = 50160 gallons

4 0

3 years ago

the altitude of the hypotenuse of a right triangle divides the hypotenuse into segments of lengths 14 and 8. what is the length

lisov135 [29]

Answer:

B. $4\sqrt{7}$

Step-by-step explanation:

The right triangle altitude theorem states that the altitude of a right angled triangles formed on the hypotenuse is equal to the geometric mean of the 2 line segments it creates.

This can be represented as:

$h = \sqrt{(xy)}$

Where,

h = the length of the altitude,

x and y are the lengths of the 2 segments formed.

Therefore, the length of the altitude = $h = \sqrt{(14*8)}$

$h = \sqrt{112}$

$h = \sqrt{16}*\sqrt{7}$

$h = 4\sqrt{7}$

3 0

3 years ago

There are 750 people at a football game. Out of this number, 320 are students. What percent of the people at the football game a

zlopas [31]

Answer:

I have no clue

Step-by-step explanation:

i dont lnow

6 0

3 years ago

Find the value of k if the distance between (2,k) and (6,7) is 4√2 unit

andreyandreev [35.5K]

Answer:

k = 3

Step-by-step explanation:

We have the distance formula: $d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}$ . We can plug in $4\sqrt{2}$ = d, x2 = 6, x1=2, y2 = 7, y1 = k.

Then, we can solve the question using some algebra to find that k = 3.

Edit: Here is a step by step:

$4\sqrt{2} = \sqrt{(6-2)^2 + (7-k)^2}\\$

$(4\sqrt{2})^2 = (6-2)^2 + (7-k)^2$

$32 = (4)^2 + (7-k)^2$

$32 = 16 + (7-k)^2$

$32 - 16 = (7-k)^2$

$16 = (7-k)^2$

$\sqrt{16} = (7-k)$

$4 = 7-k$

$k = 3$

4 0

3 years ago

If there are 4 trucks for every 5 cars how many trucks and cars are there?

Rom4ik [11]

Answer:

Step-by-step explanation:

^^there are 20 Trucks in total And 5 cars

8 0

2 years ago

Read 2 more answers