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3 years ago

What is the value of the expression [5 × (3 + 6)] – 8?

Mathematics

2 answers:

Ne4ueva [31]3 years ago

7 0

Answer:

Step-by-step explanation:

PEMDAS

Order of operations tell you to do what's in the parentheses first then multiply by 5 lastly, subtract 8

Sergeeva-Olga [200]3 years ago

5 0

The answer is 37. Hope this helps!

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£35.50 for the first day then £18.25 for each extra day the total cost of hiring the machine was £ 163.25 how many day dose Mart

BabaBlast [244]

y = number of days
35.50 + 18.25 y = 163.25

18.25 y = 163.25 - 35.50

18.25y = 127.75

y = 127.75 / 18.25

y = 7

so Martin has hired the machine for 8 days

( first day paid 35.50), then 7 days for 18.25

8 0

3 years ago

After an earthquake, 1/4 of all claims were paid within a month. Of the remaining claims that had not yet been paid, 4/7

eduard

Answer:

16/28 claims

Step-by-step explanation:

7/28

16/28

- You need to find common denominator. (use 28)

- If you would like a further explanation please let me know.

4 0

3 years ago

Last year, 50% of MNM. Inc. employees were female. It is believed that there has been a reduction in the percentage of females i

Serhud [2]

Answer:

We conclude that there has been a significant reduction in the proportion of females.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 400

p = 50% = 0.5

Alpha, α = 0.05

Number of women, x = 118

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.50\\H_A: p < 0.50$

This is a one-tailed test.

Formula:

$\hat{p} = \dfrac{x}{n} = \dfrac{118}{400} = 0.45$

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

Putting the values, we get,

$z = \displaystyle\frac{0.45-0.50}{\sqrt{\frac{0.50(1-0.50)}{400}}} = -2$

Now, we calculate the critical value.

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.645$

Since the calculated z-statistic is less than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there has been a significant reduction in the proportion of females.

3 0

3 years ago

Plss help

KonstantinChe [14]

$\frac{1}{2} \times 5 \times 16 \\ 40 \\ ke = 40joules$

if correct mark me as brainiest

4 0

3 years ago

Read 2 more answers

Please tell me I’ll give you Brinley

babymother [125]

Answer:

i was thinking B or D

Step-by-step explanation:

and yes i can read the answers at the bottom

8 0

3 years ago