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kvv77 [185]
2 years ago
12

QUESTION IN PICTURE

Mathematics
1 answer:
Rashid [163]2 years ago
4 0

Answer:

3 6/5

Step-by-step explanation:

the fraction is its kinda blurry

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What is the probability of selecting a seventh-grader from a school that has 250 sixth-graders, 225 seventh-graders, and 275 eig
Nina [5.8K]

Answer:

3/10 or 0.3 or 30%

Step-by-step explanation:

Its 225/750 total students

We simplify this by dividing by 5

45/150

Divide by 5 again

9/30

Divide by 3

3/10

3 0
3 years ago
What, in degrees, is the measure of the largest angle in $\triangle PQR?$
irina1246 [14]

Answer:

108 degrees

Step-by-step explanation:

3x+x+6x=10x, 180/10=18 and 18x6 is 108

3 0
2 years ago
The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence?
Maru [420]

C: 4 is the right answer

Step-by-step explanation:

Given

a1 = -3

a15 = 53

We know that explicit formula for the arithmetic sequence is:

a_n=a_1+(n-1)d

For the 15th, term it will be

a_{15}=-3+(15-1)d\\53=-3+14d

Adding 3 on both sides

53+3 = -3+3 + 14d\\56 = 14d

Dividing both sides by 14

\frac{56}{14}=\frac{14d}{14}\\d=4

Hence,

C: 4 is the right answer

Keywords: Arithmetic sequence, Common Difference

Learn more about arithmetic sequence at:

  • brainly.com/question/12896802
  • brainly.com/question/12973601

#LearnwithBrainly

4 0
3 years ago
A student wants to survey the sophomore class of 200 students about whether the school should require uniforms. A
Fittoniya [83]

Answer: C

Step-by-step explanation:

<u>Given:</u>

Sample size (n) = 50

x = 12

\widehat{\mathbf{p}}=\frac{\mathbf{x}}{n}=\frac{12}{50}=0.24

Confidence level = 90%

α = 1 − 0.90 = 0.10

α/2 = 0.05

\text { Critical value }\left(z_{c}\right)=z_{\frac{\alpha}{2}}=z_{0.05}=1.6449

(from standard normal table)

90% Confidence interval is,

\begin{aligned}&\text { Confidence interval }=\widehat{\mathbf{p}} \pm z_{c} \times \sqrt{\frac{\hat{\mathbf{p}}(1-\hat{\mathbf{p}})}{n}} \\&\text { C. I }=0.24 \pm 1.6449 \times \sqrt{\frac{0.24(1-0.24)}{50}} \\&\text { C. I }=0.24 \pm 1.65 \times \sqrt{\frac{0.24(1-0.24)}{50}}\left\end{aligned}

Therefore, 90% confidence interval for the true proportion of sophomores who favour the adoption of uniforms is C

6 0
2 years ago
How many groups of 0.9 are in 3.6
aliya0001 [1]
4 because 9 times 4 is 36 and then you add the decimal and make it 3.6
4 0
3 years ago
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