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3 years ago

PLEASE HELP!!!!!! ILL GIVE BRAINLIEST *EXTRA 40 POINTS** !! DONT SKIP :((

Mathematics

1 answer:

Ugo [173]3 years ago

5 0

Answer:

the answer is yes

Step-by-step explanation:

2x + 4y = 6

when x =9 and y = -3

2(9)+4(-3) = 6 ✔

6x+14y = 12

6(9) + 14(-3) = 12 ✔

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Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1004 adults, 86% said that they have a cell phone.

meriva

Answer: The value of test statistic = -10.67

Step-by-step explanation:

Test statistic for proportion:

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

, where p= population proportion

n= sample size

$\hat{p}$ = sample proportion

AS per given,

p=0.94, n= 1004, $\hat{p}=0.86$

$z=\dfrac{0.86-0.94}{\sqrt{\dfrac{0.94(1-0.94)}{1004}}}\\\\=\dfrac{-0.08}{\sqrt{\dfrac{0.0564}{1004}}}\\\\=\dfrac{-0.08}{\sqrt{0.0000561752988048}}\\\\=\dfrac{-0.08}{0.00749501826581}\\\\=-10.673756509\approx-10.67$

i.e. the value of test statistic = -10.67

8 0

3 years ago

Does anyone know this?

Sav [38]

Answer:

the answer to this question is b

3 0

4 years ago

Find the missing side

lorasvet [3.4K]

Answer:

I believe the answer is 48

Step-by-step explanation:

Subtract 30 from 78 to get your answer.

6 0

3 years ago

What is 64 to the negative 1/3 power

EleoNora [17]

1/64
1/root3 64
1/4
You first deal with the negative and put the 64 below
Then you find the cube root of 64 which equals 4

7 0

4 years ago

Maria is comparing the prices of two window cleaning companies. Company A charges $6 per window and an additional $12 as service

bija089 [108]

Part A
y=6x+12
y=5x+15
x is the amount of windows, y is the total amount of money
Part B
y=6(8)+12 =60
y=5(8)+15 =52
Company B
Part C
y=6(6)+12 =48
y=5(6)+12 =42
$6 is saved

4 0

3 years ago