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Vanyuwa [196]
2 years ago
13

Solve for the value of R. SOMEONE PLEASE HELP ILL GIVE YOU POINTS AND BRAINLIST ANSWER !!!

Mathematics
1 answer:
lord [1]2 years ago
7 0

Step-by-step explanation:

(3r + 4)  + (8r - 2) = 90

3r + 4 + 8r - 2= 90

11r = 88

r =  \frac{88}{11} \\

r = 8

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Penny reads 11 pages in 1/3 hour. How many pages does she read per hour?
dolphi86 [110]

Answer:

33 pages per hour

Step-by-step explanation:

11 pages=1/3 hour

22 pages=2/3 hour

33 pages= 3/3 hour or 1 hour

5 0
3 years ago
The data indicate the following approximate percentages:
Mariana [72]

Answer:

Answer 1:

2,147,616

Answer 2:

5,145,330

Answer 3:

3,758,328

Answer 4:

8,157,958

Step-by-step explanation:

These are all correct i got 10/10.

8 0
2 years ago
A brochure claims that the average maximum height for a certain type of plant is 0.7 m. A gardener suspects that this is not acc
larisa [96]

Answer:

As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

Step-by-step explanation:

1. Relevant data:

\mu=0.70\\N=40\\\alpha=0.05\\X=0.65\\s=0.20

2. Hypotesis testing

H_{0}=\mu=0.70

H_{1} =\mu< 0.70

3. Find the rejection area

From the one tail standard normal chart, whe have Z-value for \alpha=0.05 is 1.56

Then rejection area is left 1.56 in normal curve.

4. Find the test statistic:

Z=\frac{X-\mu_{0} }{\sigma/\sqrt{n}}

Z=\frac{0.65-0.70}{0.20/\sqrt{40}}\\Z=-1.58

5. Hypotesis Testing

Z_{\alpha}=1.56\\Z=-1.58

-1.58

As Z, it is possible to reject null hypotesis. It means that the local mean height is less tha 0.7 m with a 5% level of significance.

4 0
3 years ago
Subtract one-third from 8 times b
steposvetlana [31]

i think the answer is 1/3 from 8x 6 =-46.7 i think

6 0
3 years ago
Solve. <br> 24= 7/8g<br> A. 3/7<br> B. 21<br> C. 23 1/8<br> D. 27 3/7
Mrac [35]
I hope this helps you

3 0
2 years ago
Read 2 more answers
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