3 years ago

Find the mean of the data given.

Mathematics

1 answer:

Wittaler [7]3 years ago

8 0

Answer:

The mean number of children is 3.

Step-by-step explanation:

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1) Simplify the product using the distributive property.

uysha [10]

X^2 + 2x -8
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2 years ago

Which expression is equivalent to 144^3/2?

ira [324]

we are given

$(144)^{\frac{3}{2} }$

we can write it as

$144=12 \times 12$

$144=12^2$

we can replace it as

$(144)^{\frac{3}{2} }=(12^2)^{\frac{3}{2} }$

$(144)^{\frac{3}{2} }=(12)^{2*\frac{3}{2} }$

$(144)^{\frac{3}{2} }=(12)^{3 }$

$(144)^{\frac{3}{2} }=1728$ ...............Answer

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3 years ago

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Justin and elena each launched a toy rocket into the air. the height of justin’s rocket is modeled by the equation h = –16t2 60t

mario62 [17]

I don’t know you just have to add and keep adding them

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1 year ago

6. Using the discriminant, determine the value of k that will give 1 solution (i.e. discriminant equals zero) y = kx²-4x + 4

Gwar [14]

Answer:

k = 1

Step-by-step explanation:

Discriminant

$b^2-4ac\quad\textsf{when }\:ax^2+bx+c=0$

$\textsf{when }\:b^2-4ac > 0 \implies \textsf{two real roots}$

$\textsf{when }\:b^2-4ac=0 \implies \textsf{one real root}$

$\textsf{when }\:b^2-4ac < 0 \implies \textsf{no real roots}$

As we need to determine the value of k that will give one solution, set the discriminant to zero.

Given equation:

$y=kx^2-4x+4$

Therefore:

a = k
b = -4
c = 4

Substitute these values into the discriminant and solve for k:

$\begin{aligned}b^2-4ac & = 0\\\implies (-4)^2-4(k)(4) & = 0\\16-16k & = 0\\16k & = 16\\\implies k & = 1\end{aligned}$

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1 year ago

Find the volume of the cylinder.

Amanda [17]

The first one A) :)))))))

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2 years ago

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