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3 years ago

In a school, for every 5 boys there are12 girls. if there are 300 gilrs how many boys are there?

Mathematics

2 answers:

melamori03 [73]3 years ago

7 0

U would divide 300 by 5 which is 79.8

andrezito [222]3 years ago

4 0

The answer is 125 boys 125:300

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3ab (2ab + 2a -b )-2a (2ab -2b +a )

sp2606 [1]

a • (6ab2 + 2ab - 2a - 3b2 + 4b)

Step by step solution :Step 1 :
Equation at the end of step 1 : (3ab • (2ab + 2a - b)) - 2a • (2ab + a - 2b) Step 2 :Equation at the end of step 2 : 3ab • (2ab + 2a - b) - 2a • (2ab + a - 2b) Step 3 :Step 4 :Pulling out like terms :

4.1 Pull out like factors :

 6a2b2 + 2a2b - 2a2 - 3ab2 + 4ab =

 a • (6ab2 + 2ab - 2a - 3b2 + 4b)

Final result : a • (6ab2 + 2ab - 2a - 3b2 + 4b)

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3 years ago

Mrs. Thornton is teaching a 5th grade class. She is standing 15 meters in front of Hillary. Avisha is sitting 8 meters to Hillar

kykrilka [37]

15+8=23, i think is the answer

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3 years ago

What is 4 quarts converted to pints

Lilit [14]

4 liquid quarts = 8 liquid pints

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3 years ago

Read 2 more answers

This graph represents a quadratic function. What is the function’s equation written in factored form and in vertex form?

creativ13 [48]

Answer:

Part a) The function’s equation written in vertex form is

$f(x)=2(x-2)^2-8$

Part b) The function’s equation written in factored form is equal to

$f(x)=2x(x-4)$

Step-by-step explanation:

Part a) What is the function’s equation written in vertex form?

we know that

The equation of a vertical parabola written in vertex form is equal to

$f(x)=a(x-h)^2+k$

where

a is a coefficient

(h,k) is the vertex

Looking at the graph

The vertex is the point (2,-8)

substitute

$f(x)=a(x-2)^2-8$

Find the value of the coefficient a

take one point from the graph

(0,0)

substitute in the equation

$0=a(0-2)^2-8\\0=4a-8\\4a=8\\a=2$

therefore

The function’s equation written in vertex form is

$f(x)=2(x-2)^2-8$

Part b) What is the function’s equation written in factored form?

we know that

The equation of a vertical parabola written in factored form is equal to

$f(x)=a(x-x_1)(x-x_2)$

where

a is a coefficient

x_1 and x_2 are the zeros or x-intercepts of the function

Remember that the x-intercept is the value of x when the value of the function is equal to zero

Looking at the graph

The zeros or x-intercepts of the function are

x=0 and x=4

$f(x)=a(x-0)(x-4)$

$f(x)=ax(x-4)$

Find the value of the coefficient a

take one point from the graph

(2,-8)

substitute

$-8=a(2)(2-4)\\-8=-4a\\a=2$

therefore

The function’s equation written in factored form is equal to

$f(x)=2x(x-4)$

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3 years ago

Math homework help exponents

Len [333]

Answer + Step-by-step explanation:

$\frac{5^{10}}{5^{5}} =5^{10-5} = 5^5$

$\text{used property :} \ \ \ \frac{a^{m}}{a^{n}} =a^{m-n}$

_______________________

$(4^8)^3 = a^{8 \times 3}=a^{24}$

$\text{used property :} \ \ \ (a^n)^m = a^{n \times m}$

_______________________

$10^{-4}=\frac{1}{10^{4}} \ \text{not} \ \frac{1}{4^{10}}$

_______________________

15⁶ × 15³ = 15⁶⁺³ = 15⁹

_______________________

Recall : If a ≠0 ⇒ a⁰ = 1

Then

Since 6⁸ ≠ 0 ⇒ (6⁸)⁰ = 1

6 0

1 year ago