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
lbvjy [14]
3 years ago
11

Attachment is shown in the bottom

Mathematics
1 answer:
Leokris [45]3 years ago
5 0

Answer: She is correct because each ratio is equivalent to 5:1, except for the last one, which is 1:5

5/1 = 5:1

10/2 = 5:1

25/5 = 5:1

10/50 = 1:5

You might be interested in
Stephen biked 75% of 2 miles fred biked 2.5 miles how much farther did Fred bike than Stephen
Natalka [10]
The answer is:

2.5 - (.75 • 2)
= 2.5 - 1.5
= 1
7 0
3 years ago
What is 2x+3+8x=3x+9x+7
Reika [66]

Answer:

x=-2

Step-by-step explanation:

Hey there!

In order to solve this equation, you need to combine like terms

The equation after combining the x terms and the contants will look like this

10x+3=12x+7

Now you have to take 10x away from both sides

3=2x+7

Now bring all the constants to the left side

3-7=2x

Simplify

-4=2x

divide 2 on both sides to get x by itself

x=-2

So, the answer is x=-2

3 0
2 years ago
Whats 2x (3x-9x) if you answer this you get 10 points​
Masteriza [31]

Answer:

2x(3x-9x)

=2x(-6x)

=-12x^2

7 0
3 years ago
Read 2 more answers
A lathe is set to cut bars of steel into lengths of 6 cm. The lathe is considered to be in perfect adjustment if the average len
Gnom [1K]

Answer:

t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723    

E. -0.723

df=n-1=93-1=92  

p_v =2*P(t_{(92)}  

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

Step-by-step explanation:

Information provided

\bar X=5.97 represent the sample mean for the length

s=0.4 represent the sample standard deviation

n=93 sample size  

\mu_o =6 represent the value that we want to test

\alpha=0.05 represent the significance level

t would represent the statistic  

p_v represent the p value for the test

System of hypothesis

We need to conduct a hypothesis in order to check if the lathe is in perfect adjustment (6cm), then the system of hypothesis would be:  

Null hypothesis:\mu = 6  

Alternative hypothesis:\mu \neq 6  

since we don't know the population deviation the statistic is:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Replacing in formula (1) we got:

t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723    

E. -0.723

P value

The degrees of freedom are given by:

df=n-1=93-1=92  

Since is a two tailed test the p value would be:  

p_v =2*P(t_{(92)}  

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

5 0
3 years ago
What is the variable number in the equation 6=4+2s
Savatey [412]

Answer:

I believe it is 2s

Step-by-step explanation:

a variable is a symbol which functions as a placeholder, so in this case, the placeholder is "s"

8 0
3 years ago
Other questions:
  • 24 + 6a + b +3a + b + 3a
    11·1 answer
  • You are standing 40 meters from the base of a tree that leans 8o away from you. The angle of elevation from you to the top of th
    5·1 answer
  • Find the value of x in each case. Give reasons to justify your solutions!<br> D ∈ AC
    5·1 answer
  • Is this set of ratios equal?: 4/7 and 9/13
    12·2 answers
  • Given that F(x) =x^2+2, evaluate F(2)
    13·1 answer
  • Y = 3/2x + 3 <br> What is the y-intercept?
    12·1 answer
  • Evaluate the Expression<br><br> 8√8.41 +1.8
    10·1 answer
  • Find the arc length for arcs of circles as follows:
    8·1 answer
  • Find the area of an equilateral triangle with an apohem of (5root3)/3 ft and a side length of 10 ft.
    11·2 answers
  • 7th Grade: Daily Tre Seventh Grade Wee.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!