All categories

2 years ago

Complete these problems to review skills of the module (Will give 70 points)

Mathematics

2 answers:

bazaltina [42]2 years ago

7 0

2. 225
3. 65
and please vote brainliest

____ [38]2 years ago

6 0

2.
1/2 (15) (13 + 17)
1/2 (15) (30) (simplify 13 + 17)
7.5 (30) (multiply 1/2 and 15)
225 (multiply 7.5 and 30)

3.
1/2 (10) (9.4 + 3.6)
1/2 (10) (13) (simplify 9.4 + 3.6)
(5) (13) (multiply 1/2 and 10)
65 (multiply 5 and 13)

Hope this helped!

You might be interested in

a 44 miles walk has 3 checkpoints. the first one is 13 1/8 miles from the starting point . the 2nd is 20 1/4 miles from the firs

lesya692 [45]

Answer:

.,,

Step-by-step explanation:

...

3 0

3 years ago

Stainless steels are frequently used in chemical plants to handle corrosive fluids, however, these steels are especially suscept

Ira Lisetskai [31]

Answer: 95% confidence interval would be (0.344,0.456).

Step-by-step explanation:

Since we have given that

n = 295

x = 118

so, $\hat{p}=\dfrac{x}{n}=\dfrac{118}{295}=0.4$

At 95% confidence, z = 1.96

So, margin of error would be

$z\times \sqrt{\dfrac{p(1-p)}{n}}\\\\=1.96\times \sqrt{\dfrac{0.4\times 0.6}{295}}\\\\=0.056$

so, 95% confidence interval would be

$\hat{p}\pm \text{margin of error}\\\\=0.4\pm 0.056\\\\=(0.4-0.056,0.4+0.056)\\\\ =(0.344,0.456)$

Hence, 95% confidence interval would be (0.344,0.456).

6 0

3 years ago

Read 2 more answers

Tim and Jim are working on a school project together. If he had to work by himself, it would take

Vladimir [108]

Answer: 6 hours

Step-by-step explanation:

Given, Tim and Jim are working on a school project together.

Tim takes 10 hours to complete the school project.

If Jim worked alone, it would take him 15 hours

Let t be the time they both take if they work together.

Then, $\dfrac{1}{t}=\dfrac{1}{\text{Time taken by Tim}}+\dfrac{1}{\text{Time taken by jim}}$

$\Rightarrow\ \dfrac{1}{t}=\dfrac{1}{10}+\dfrac{1}{15}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{3+2}{30}=\dfrac{5}{30}\\\\\Rightarrow\dfrac{1}{t}=\dfrac{1}{6}\\\\\Rightarrow t=6$

So, it will take<u> 6 hours</u> to complete the school project together .

4 0

2 years ago

The formula for the circumference of a circle is C = 2nr. Find the circumference of a

Sholpan [36]

Step-by-step explanation:

$circumference = 2\pi \: r \\ C = 2 \times 3.14 \times ( \frac{4}{2} ) \\ C = 12.56 \: ft$

7 0

2 years ago

A housekeeper was earning $9.50 an hour before a

Degger [83]

Answer:

raise = $0.76

new wage = $10.26 per hour

Step-by-step explanation:

8% in decimal form = 8/100 = 0.08

To find 8% of 9.50: 0.08 x 9.50 = 0.76

Therefore, the housekeeper's raise = $0.76

To calculate the amount she now earns after the raise, add the 8% rise to the initial value:

0.76 + 9.50 = $10.26

5 0

2 years ago