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2 years ago

4y-6 = 2y +8 I need helppp

Mathematics

2 answers:

Umnica [9.8K]2 years ago

7 0

Answer:

4y - 6 =2y + 8

4y - 2y = 8 + 6

2y = 14

y = 14 / 2

y = 7

Romashka [77]2 years ago

5 0

The answer would be 3.5

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0.5b+4=2(b+2) I need help on this question?

mafiozo [28]

Answer: b=0

Step-by-step explanation:

0.5b+4=2(b+2)

0.5b+4=2b+4

4=1.5b+4

0=1.5b

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3 years ago

Read 2 more answers

A bank sampled its customers to determine the proportion of customers who use their debit card at least once each month. A sampl

Zinaida [17]

Answer:

(0.084,0.396)

Step-by-step explanation:

The 99% confidence interval for the proportion of customers who use debit card monthly can be constructed as

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$p=\frac{x}{n}$

$p=\frac{12}{50}$

$p=0.24$

$q=1-p=1-0.24=0.76$

$\frac{\alpha }{2} =\frac{\0.01 }{2}=0.005$

$p-z_{\frac{\alpha }{2}} \sqrt{\frac{pq}{n} }$

$0.24-z_{0.005} \sqrt{\frac{0.24*0.76}{50} }$

$0.24-2.58(0.0604)$

$0.24-0.155832$

By rounding to three decimal places we get,

$0.084$

The 99% confidence interval for the proportion of customers who use debit card monthly is (0.084,0.396).

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3 years ago

Mr. Simpson deposits his money in a savings account at the Springfield Bank. Would he earn more money with simple interest or wi

allochka39001 [22]

Answer:

THE ANSWER IS D

Step-by-step explanation:

8 0

3 years ago

Explain how you can tell if the expressions 7x – 4 and 6x – 4 – x are equivalent.

Alina [70]

Hey there!

Combine Like Terms and see if the expressions are equivalent or not.

6x-4-x

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5x-4

Is 5x-4 equivalent to 7x-4? No.

Hope everything is clear.

Let me know if you have any questions!

Always remember: Knowledge is power!

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2 years ago

Please calculate the probability using the following equations (in document)

labwork [276]

Substitute u = t ³/2592 and du = t ²/864 dt. Then

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The probability that a 12 hour surgery is successful is P (12), so letting T = 12 gives

$P(12)\approx1-\displaystyle\int_0^{\frac23}e^{-u}\,\mathrm du\approx e^{-\frac23} \approx \boxed{0.5134}$

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3 years ago