1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erastovalidia [21]
3 years ago
12

In Mrs. Smith’s enrichment class, 25% of the students are boys. There are 7 boys in the class. How many total students are in Mr

s. Smith’s enrichment class?
Mathematics
1 answer:
Yakvenalex [24]3 years ago
4 0

Answer:28

Step-by-step explanation: 25% is 1/4 so you can multiply 7 and 4 to get 28

You might be interested in
How do you divide fractions by cancelling
bija089 [108]
First you have to flip the second fraction
4 0
4 years ago
Read 2 more answers
How many real roots does the equation (x^2+1)(x-2)=0 have?<br><br> A: 3<br> B: 1<br> C: 0<br> D: 2
seropon [69]
0 i think is the answer for
6 0
3 years ago
Home Videos Inc. surveys 450 households and finds that the mean amount spent for renting or buying videos is P135 a month and th
adell [148]

SOLUTION:

Case: Hypothesis testing

Step 1: Null and Alternative hypotheses

\begin{gathered} H_0:\mu=P127.50 \\ H_1:\mu\leq P127.50 \end{gathered}

Step 2: T-test analysis

\begin{gathered} t=\frac{\hat{x}-\mu}{\frac{s}{\sqrt{n}}} \\ t=\frac{135-127.5}{\frac{75.25}{\sqrt{450}}} \\ t=2.144 \end{gathered}

Step 3: t-test with the significance level

\begin{gathered} t_{\alpha}=? \\ \alpha=0.05 \\ From\text{ }tables \\ t_{0.05}=1.654 \end{gathered}

Step 4: Comparing

t>t_{\alpha}

So tail to reject the null hypothesis. There is enough evidence at a 0.05 level of significance to claim that the mean spent is greater than P127.50.

Final answer:

Yes, there is evidence sufficient to conclude that the mean amount spent is greater than P127.50 per month at a 0.05 level of significance.

6 0
1 year ago
Evelyn can run 3 miles in 40 minutes. Which equation can be solved to find m, the number of miles Evelyn can run in 60 minutes?
inna [77]

Answer:

m= 4.5 miles

Step-by-step explanation:

Let the number of miles Evelyn can run be m and can be modeled by the equation below

m= kx

Where x Is the Minutes

When m= 3

x= 40

3= k40

k= 3/40

If x= 60

m=3/40(60)

m = (60*3)/40

m= 180/40

m= 4.5 miles

7 0
3 years ago
PLS HELP! (it will only let me do 31 points :() but you get brainliest.
MissTica

Answer:

107, there is two lines after that so 108 109 and the last line is 110 so your answer will be 107 degrees.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • at a state fair, there are 10 animal exhibits, 12 gardening exhibits, and 8 farm equipment exhibits. Describe a model that you c
    7·1 answer
  • 4c = 3 C = <br> please help me I am late for hw and ned this question done asap
    13·1 answer
  • A line segment has endpoints at (–1, 4) and (4, 1). Which reflection will produce an image with endpoints at (–4, 1) and (–1, –4
    13·2 answers
  • 12/126 to reduced simplest form
    6·2 answers
  • What is the answer and step to get there
    9·1 answer
  • PLE HELP ASAP WILL MARK BRAINLIEST IF YOU ARE CORRECT!!!!!!!!!
    8·1 answer
  • Solve for the variable
    14·2 answers
  • -4 - 2 (y + 1) = -7<br> step by step pla
    15·2 answers
  • The graph shows the number of miles you and a friend run each week while training for a race.
    5·1 answer
  • A 1 3/4 kg fish weighed 1 3/16 kg after it was cleaned. how much was the decreased in weight of the fish.​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!