3 years ago

Hello I'm Chloe Can you help me, Thank you :)

Mathematics

1 answer:

andrew-mc [135]3 years ago

3 0

Answer:

b is correct

Step-by-step explanation:

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Can someone help please. Im stuck.

Fantom [35]

Answer:

the answer is B.

Step-by-step explanation:

100*20 + 1/2*(60-20)*(100 - 12)

=2000 + 1/2*40*88

=3760

8 0

3 years ago

Write the equation in slope-intercept form. y=8(x−4)+6x

Aleksandr [31]

Answer:

slope=1/14

Step-by-step explanation:

y=8x+6x-32

14x-y-32=0

slope=-b/a

=1/14

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3 years ago

Suppose that X ∼ N(−7, 14). Find the value of x for which P(|X + 7| ≤ x) = 0.44

grigory [225]

$\mathbb P(|X+7|\le x)=\mathbb P\left(\left|\dfrac{X+7}{14}\right|\le\dfrac x{14}\right)$
$=\mathbb P\left(|Z|\le\dfrac x{14}\right)=0.44$
$\implies\mathbb P\left(-7\le Z\le\dfrac x{14}\right)=0.22$
$\implies\mathbb P\left(Z\le\dfrac x{14}\right)=0.5+0.22=0.72$

$\implies\dfrac x{14}\approx0.5828$
$\implies x\approx8.1598$