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2 years ago

Check if 7 is a solution of the equation 4 ( Z - 3 ) = 16. step by step plz guys.

Mathematics

2 answers:

Airida [17]2 years ago

5 0

Answer:7

Step-by-step explanation:

4(z-3)=16

4z-12=16

4z=28

4z/4=28/4

z =7

Vilka [71]2 years ago

3 0

Answer:

YES

Step-by-step explanation:

4(Z-3)=16

4Z-12=16

+12 +12

4Z=28

Z=7

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A.45 B.30 C.90 D.180 E.40 F.55 G.130 H.50

brilliants [131]

Answer:

m<4=40

Step-by-step explanation:

Supplementary angles form 180 degrees

m<3 is vertical to the 50 degree angle which is equal.

so. m<3=50

m<5=90

90+50=140

180-140=40

m<4=40

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2 years ago

Joe says that x

irga5000 [103]

The equations x+5x=16
and x+5x+25=16
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2 years ago

The director of the library believes that 14% of the library's collection is checked out. If the director is right, what is the

Ksivusya [100]

Answer: 0.2643

Step-by-step explanation:

Let p be the population proportion and $\hat{p}$ be the sample proportion .

As per given question , we have

$p=0.14\\\\ \hat{p}=0.13\\\\ n=478$

z-score : $\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

$z=\dfrac{0.13-0.14}{\sqrt{\dfrac{0.14(1-0.14)}{478}}}\\\\=-0.630087269176\approx-0.63$

The required probability ( using z-table ):-

$P(z$

Hence, the probability that the proportion of books checked out in a sample of 478 books would be less than 13% = 0.2643

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3 years ago

F '(x) = sin(x) - 65 What is f(x)?

irakobra [83]

Hello,

f'(x) = sin(x) - 65 → f(x) = -cos(x) - 65x

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1 year ago

When do you need to use two number lines to compare two fractions

OLEGan [10]

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3 years ago

Check if 7 is a solution of the equation 4 ( Z - 3 ) = 16. step by step plz guys. ​

Check if 7 is a solution of the equation 4 ( Z - 3 ) = 16. step by step plz guys.