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2 years ago

Please help me it is a quiz

Mathematics

1 answer:

fredd [130]2 years ago

4 0

Answer:

Step-by-step explanation: I CAN HELP YOU what is the question

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IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an of 122 ,

marusya05 [52]

Answer:

B. 93%

Step-by-step explanation:

Find the z-score:

z = (x − μ) / σ

z = (122 − 100) / 15

z = 1.47

Find the probability using a calculator or z-score table.

P(Z < 1.47) = 0.93

7 0

2 years ago

nathan works at a hardware store today he sold 48 tools 5/6 of the tools he sold were hammers how many hammers did nathan sell t

SSSSS [86.1K]

Answer:

He sold 40 hammers.

Step-by-step explanation:

5/6 of 48 tools.

This just means 5/6*48, which is 40.

5 0

2 years ago

M angle 3= 31°. Find m angle 4 (complementary angle)

solniwko [45]

Hi, there.

________

$\boxed{\begin{minipage}{8cm} Complementary angles \\ Complementary angles are angles whose sum \\ is 90^\circ. \text{Using this info, let's consider this:} \\ \text{If an angle's measure is 31 degrees, what's} \\ \text{its \ complement?}\end{minipage}}$

$\text{Set up an equation, letting a be the unknown angle}$

$\bold{a+31=90}\\\text{Subtract 31 from both sides}\\\bold{a=59}$

Hope the answer - and explanation - made sense,

happy studying!!

6 0

1 year ago

Jenny has saved $600 from her summer job. During the school year, she withdraws $20 from her account every week for her daily ex

Anastasy [175]

Answer:

Step-by-step explanation:

i multiplied 17 by 20 and that gave me 340 which is greater than 300

4 0

3 years ago

Read 2 more answers

Volume of a sphere with a diameter of 8 meters? Use 3.14 for pi.

kvasek [131]

Answer: " 267.95 m³ " .
______________________________________________________
Explanation:
________________________________________________________

V = (4/3) * $\pi$ * r³ ;

Given: diameter, "d" = "8 m" ;

radius, "r" = 8 m / 2 = 4 m "

V = (4/3) * $\pi$ * r³

V = (4/3) * $\pi$ *(4m)³

V = (4/3) * (3.14) * 4³ * m³ ;

V = (4/3) * (3.14) * (4*4*4) * m³ ;

V = (4/3) * (3.14) * (64) * m³ ;

V = 267.9466666666666667 m³ ;

round to: " 267.95 m³ " .
_________________________________________________________

4 0

3 years ago