2 years ago

I need help cause I got a b- in math

Mathematics

1 answer:

anygoal [31]2 years ago

8 0

Answer:

2a plus 3/4b

Step-by-step explanation:

First distribute the fractions.

Second communitate variable a.

Third communitate variable b.

Finally simplify.

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The number of chairs increased by 7 A.cx7 B.c+7 C.c/7 D.c-7

miss Akunina [59]

B.c+7
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3 years ago

Cheeseburgers are two for $5.00. How much would 5 cheeseburgers cost?

stiv31 [10]

Answer:

5 cheeseburgers would be 12.50

Step-by-step explanation:

5 / 2 is 2.50 , 2.50 for one cheeseburger times 5 is 12.50

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3 years ago

Read 2 more answers

Salaries of 49 college graduates who took a statistics course in college have a mean, x overbar, of $ 65 comma 300. Assuming a

Molodets [167]

Answer: $60,540< \mu$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}-z^*\dfrac{\sigma}{\sqrt{n}}< \mu$

, where $\sigma$ = Population standard deviation.

n= sample size

$\overline{x}$ = Sample mean

z* = Critical z-value .

Given : $\sigma=\$17,000$

n= 49

$\overline{x}= \$65,300$

Two-tailed critical value for 95% confidence interval = $z^*=1.960$

Then, the 95% confidence interval would be :-

$65,300-(1.96)\dfrac{17000}{\sqrt{49}}< \mu$

$=65,300-(1.96)\dfrac{17000}{7}< \mu$

$=65,300-4760< \mu$

$=60,540< \mu$

Hence, the 95% confidence interval for estimating the population mean $(\mu)$ :

$60,540< \mu$

7 0

2 years ago

Simplify: -4b^6 + (-26b^6)

DENIUS [597]

Answer:

-30 $b^{6}$

Step-by-step explanation:

-4b^6 + -24b^6 = -30b^6

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3 years ago

MATH HELP LEASE WILL GIVE BRAINLIEST!!!

Marysya12 [62]

The answer is (22) hope it helps have a great day

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3 years ago