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3 years ago

Answer quickly please doing test !!!!!

Mathematics

2 answers:

Alecsey [184]3 years ago

4 0

Answer: 2w -7/4

Step-by-step explanation:

1 /4(8w − 7)

Apply the distributive property.

1 /4(8w − 7) + 1/4 ⋅ − 7

Cancel the common factor of 4.

Factor 4 out of 8w.

2w + 1/4 ⋅ -7

Combine 1/4 and -7

2w + ((-7)/4)

Move the negative in front of the fraction.

2w − 7/4

Ivenika [448]3 years ago

3 0

Answer:

$2w - \frac{ 7}{4}$

Step-by-step explanation:

$\frac{1}{4} \times 8w = 2w \\ \frac{1}{4} \times ( - 7) = \frac{ - 7}{4}$

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3 years ago

What is the next term of the geometric sequence? 5, 15, 45,

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3 years ago

Subtraction with Unequal Denominators: 2/3 - 1/12

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Make 2/3 into 8/12 then subtract 1/12 and you get 7/12

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3 years ago

Read 2 more answers

A survey of 400 non-fatal accidents revealed that 268 involved a distracted driver using some kind of electronic device. Constru

Misha Larkins [42]

A 95% confidence interval for the proportion of non-fatal accidents involving a distracted driver using some kind of electronic device is 62.5%<x<71.61%

The 95% confidence interval for the proportion is expressed according to the formula;

$CI=p\pm z\sqrt{\frac{p(1-p)}{n} }$

p is the proportion = 268/400 = 0.67

z is the 95% z-score = 1.96

n is the sample space = 400

Substitute the given parameters into the formula to have:

$CI=0.67\pm 1.96\sqrt{\frac{0.67(1-0.67)}{400} }\\CI=0.67\pm 1.96\sqrt{\frac{0.67(0.33)}{400} }\\CI=0.67\pm 1.96(0.0235)\\CI=0.67 \pm 0.0461\\CI=(0.67-0.0461, 0.67+0.0461)\\CI=(0.624, 0.7161)\\CI = (62.4 \%, 71.61 \%)$

Hence a 95% confidence interval for the proportion of non-fatal accidents involving a distracted driver using some kind of electronic device is 62.5%<x<71.61%

Learn more on confidence interval here: brainly.com/question/17212516

5 0

3 years ago

What is -2(-6+-y) in expanded form

s344n2d4d5 [400]

Answer:

2 mutiplyed by (y + 6)

Step-by-step explanation:

Pull out like factors :

-6 - y = -1 • (y + 6)

at the end:

0 - -2 • (y + 6)

Final result :

2 • (y + 6) !

6 0

2 years ago