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3 years ago

Mrs Simpson class has 10 girls and 15 boys what is the ratio of girls to boys

Mathematics

1 answer:

Tamiku [17]3 years ago

7 0

10:15

because it's girls:boys

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A ball is thrown upward from the top of a building. The function below shows the height of the ball in relation to sea level, f(

Marina86 [1]

$f(t) = -16t^{2} +48t + 100$
Average rate of change from t = 3 seconds to t = 5 seconds = $\frac{f(5)-f(3)}{5-3} = \frac{(-16( 5^{2})+48(5)+100)-(-16( 3^{2})+48(3)+100 }{2}=$ $\frac{(-16(25)+240+100)-(-16(9)+144+100)}{2} = \frac{(-400+240+100)-(-144+144+100)}{2}=$ $\frac{-60-100}{2} = \frac{-160}{2} = -80$

5 0

3 years ago

Does anyone know this answer??

Aleonysh [2.5K]

For this case we have the following equation:

$(2x + 3) ^ 2 + 8 (2x + 3) + 11 = 0$

Let $u = 2x + 3$

We have:

$u ^ 2 + 8u + 11 = 0$

By definition, given an equation of the form $ax ^ 2 + bx + c = 0$

The quadratic formula, to find the solution can be written as:

$x = \frac{-b+/-\sqrt{b ^ 2-4 (a) (c)} }{2(a)}$

In this case we have:

$a = 1\\b = 8\\c = 11$

Substituting in the quadratic formula we have:

See attached image

Answer:

Option B

8 0

3 years ago

Read 2 more answers

How many solutions does this equation have?

mars1129 [50]

Answer:

Infinitely many solutions.

Step-by-step explanation:

4v=6v-2v Combine like terms.

4v=4v These are already equal without diving, so there are infinitely many solutions.

Hope this helps and have a nice day ❤

8 0

3 years ago

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A line passes through the point (-4,1) and has a slope of 3/2

anzhelika [568]

Answer:

y=3/2x+7

Step-by-step explanation:

y=mx+b

m=3/2

b=7

4 0

3 years ago

What number must you add to complete the square? x^2+6x=15

Andreyy89

To complete the square you must split the b term in half, then square that answer.

6 is the b term, half of 6 is 3, 3 squared is 9. You will add 9 to both sides of x^2 + 6x = 15

x^2 + 6x + 9 = 24

5 0

3 years ago

Read 2 more answers