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
Rainbow [258]
3 years ago
15

Solve for the variable in 7 ∕28 = 25∕ x A. 20 B. 100 C. 4 D. 5

Mathematics
1 answer:
Orlov [11]3 years ago
4 0
\frac{7}{28}=25 over x 

OK what can go in to 25? 

5

25/5=5/25/7/28/x=5
X= 5
You might be interested in
The yummy Ice cream company wants to package ice cream in cylindrical containers that have a volume of 5453 cubic centimeters. T
Lina20 [59]
The radius of the base of the container:
20/(2*3.14)=3.18cm
Area of the base:
3.14*3.18*3.18=31.8cm square
The toll of the container :
5453/31.8
=171.5cm
6 0
3 years ago
The American Heart Association is about to conduct an anti-smoking campaign and wants to know the fraction of Americans over 33
Tpy6a [65]

Answer:

The estimate for the proportion of Americans over 33 who smoke is 0.28.

Step-by-step explanation:

Proportion of Americans over 33 who smoke.

Number who smoke divided by the size of the sample.

In this question:

Sample of 1267.

913 don't smoke, so 1267 - 913 = 354 smoke. Then

p = \frac{354}{1267} = 0.28

The estimate for the proportion of Americans over 33 who smoke is 0.28.

7 0
3 years ago
Calibrating a scale:
lana66690 [7]

Answer:

We conclude that the calibration point is set too high.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ =  1000 grams

Sample mean, \bar{x} =  1001.1 grams

Sample size, n = 50

Alpha, α = 0.05

Population standard deviation, σ = 2.8 grams

First, we design the null and the alternate hypothesis

H_{0}: \mu = 1000\text{ grams}\\H_A: \mu > 1000\text{ grams}

We use One-tailed(right) z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{ 1001.1 - 1000}{\frac{2.8}{\sqrt{50}} } = 2.778

Now, z_{critical} \text{ at 0.01 level of significance } = 2.326

Since,  

z_{stat} > z_{critical}

We reject the null hypothesis and accept the alternate hypothesis. We accept the alternate hypothesis. We conclude that the calibration point is set too high.

6 0
3 years ago
21/5 as a whole number
Softa [21]
4.2 is the answer of this question you are asking ✌️
4 0
3 years ago
Read 2 more answers
Jared painted 5/12 and 4/12 blue.what part of the mug is not red or blue?
Reika [66]
3/12 of the mug is not blue or red
7 0
3 years ago
Other questions:
  • HELP ME PLEASE. GETTING GRADED ON THIS WHOLE TEST. JUST GOT BRAINLY. WILL GIVE YOU BRAINLIEST
    13·2 answers
  • the moon is 240,000 from earth what is the distance written as a whole number multiplied by a power of ten
    12·1 answer
  • Use the figure to find the measures of angle 1 and angle 2.
    6·2 answers
  • Solve this equation for A:
    11·2 answers
  • Is 0.9 greater than 1.01
    14·2 answers
  • 1) Jared, an art dealer, earns 15% commission on the art pieces that he sells at a Gallery. Jared sold $10,800 this month. How m
    9·1 answer
  • One angle is 2 more than three times its complement. What is the measure of the smaller angle.
    7·1 answer
  • True False
    14·1 answer
  • Find the length of an altitude of an equilateral triangle with sides of 4 cm.
    8·1 answer
  • Find the slope and the y-intercept of the graph of the linear equation. Then, graph the equation.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!