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3 years ago

For every 5 boys, there are 3 girls. If there are 60 students how many boys are there?

Mathematics

1 answer:

adell [148]3 years ago

8 0

Answer:

not solvable

Step-by-step explanation:

so there is a ratio of 5:3

that equals 8 parts

if you divide 60 by 8 that's 7.5

times 7.5 by 5 and you get 37.5

don't know how u get half a person but that's just how it is

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Solve the system of equations by using substitution. x+8y=-2 x-3y=20

zysi [14]

Answer:

(14, -2)

Step-by-step explanation:

To solve by using substitution, begin by solving for a variable in the first equation. Let's solve for x:

$x+8y=-2\\x=-2-8y$

Now we know what x equals. Let's substitute this into the second equation:

$x-3y=20\\(-2-8y)-3y=20$

We can then simplify:

$-2-8y-3y=20$ Given equation

$-2-11y=20$ Combine y terms

$-11y=22$ Add 2

$y=-2$ Divide by -11

So, we now know the value of y = -2.

To find the value of X, we can substitute the value of Y into one of the equations. Let's use the first one:

$x+8y=-2$

$x+8(-2)=-2$ Substitute for y

$x-16=-2$ Distribute 8

$x=14$ Add 16

So, we now know the value of x = 14.

Therefore, we know a solution to the system of equations is (14, -2).

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3 years ago

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Vitek1552 [10]

Answer:

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2 years ago

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What is the equation of a circle with center (-4 2) and diameter 6?

ASHA 777 [7]

Use the general form:-

(x - a)^2 + (y - b)^2 = r^2 where (a, b) is the centre and r = radius

Here the radius = 1/2 * 6 = 3 so r^2 = 9 and we have the equation:-

(x + 4)^2 + (y - 2)^2 = 9 (answer)

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3 years ago

Solve this please…..

Paraphin [41]

Answer:

17,12,15,14,12 answer 90

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2 years ago

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vazorg [7]

Answer:

x = -2

Step-by-step explanation:

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