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
3241004551 [841]
3 years ago
8

Equation seven times a number is 28

Mathematics
2 answers:
allochka39001 [22]3 years ago
8 0
4 is the answer 7x4=28
balu736 [363]3 years ago
6 0
7n=28
Divide by 7 on both sides
n=4
You might be interested in
1. Noah had $ 5.25 and Lin had $ 8.95. How much did they have altogether?
amid [387]

1. 5.25 + 8.95 = 14.20

2. 21.32 - 9.50 = 11.82

3. 24.50 × 5 = 122.5

4. 85.20 ÷ 4 = 21.3

Hope this helped! Please comment if you have any questions regarding how I got my answers. Stay safe.

4 0
2 years ago
A new gas- and electric-powered hybrid car has recently hit the market. The distance traveled on 1 gallon of fuel is normally di
Doss [256]

Answer:

a) P [ Z > 70 ]  = 0.1075  or 10.75 %

b)  P [ Z < 60 ] = 0.1038   or  10.38 %

c)  P [ 55 ≤ Z ≤ 70 ] =  0.8882   or 88.82 %

Step-by-step explanation:

Normal Distribution  μ = 65    and σ = 4

a) The probability of the car travels more than 70 miles per gallon is:

P [ Z > 70 ]  =  (Z-μ) ÷ σ  ⇒   P [ Z > 70 ] = (70-65) ÷4     P [ Z > 70 ] = 1.25

the point 1.25 corresponds at values, from left tail up to 70 so we must go and look for the area for the point 1.24 which is 0.8925. Then we have the area or probability of all cars traveling up  to 70 miles therefore  we have to subtract 1 -0,8925

P [ Z > 70 ]  = 0.1075  or 10.75 %

b)The probability of the car travels less than 60 miles per gallon is:

P [ Z < 60 ]  = ( 60 - μ ) ÷  σ ⇒  P [ Z < 60 ] = (60-65)÷ 4    P [ Z < 60 ] = -1.25

Again -1.25 corresponds to 60 miles per gallon threfore we move to the left and find for point -1.26  which area is 0.1038 so

P [ Z < 60 ] = 0.1038     10.38 %

c) P [ 55 ≤ Z ≤ 70]

For  point  Z = 70 or 1.25 (case a above)  P [ Z ≤ 70] = (70-65)÷4  

P [ Z ≤ 70] = 1.25

In this case we got the whole area from the left tail up to 1.25

P [ Z ≤ 70]  = 0.8944 (includes the area of the point from the left tail up to the point assocciated to 55 miles and for that reason we have to subtract that area)

P [ Z ≥ 55 ]  = (55-65) ÷ 4     P [ Z ≥ 55 ] = -2.5  and the area is 0.0062

So P [ 55 ≤ Z ≤ 70 ] =  0.8944 - 0.0062  = 0.8882

8 0
3 years ago
Julio says, "If you subtract 19 from my number and multiply the difference by - 7, the result is - 28." What is Julio's number?
ra1l [238]

Answer:

23

Step-by-step explanation:

Basically I did it backwards & opposites:

-28 divided by -7 = 4

4 + 19 = 23

I checked btw and it worked.

4 0
2 years ago
To get the right color to paint the house, Wendy must
Nataly [62]

Answer:

Wendy must mix .25 with .75

Step-by-step explanation:

Because 1 is a third of 3 which makes the process for the decimals.

6 0
2 years ago
Read 2 more answers
How do I solve this?
Yuki888 [10]
The answer is B. The values of y must only be positive because it is equal to
| - x|
The other options states that the values of y could be negative which is why it is wrong.
3 0
3 years ago
Other questions:
  • Henry and Elizabeth were both baking apple pies for the town fair. Henry bought 2.6 pounds of Honeycrisp apples that cost $2.15
    15·1 answer
  • A novelty store sells 8 comic books for every 3 action figures. On Monday, they sold 32 comic books. On Tuesday, they sold 18 ac
    6·2 answers
  • Find the value of h(-7) for the function below:
    11·1 answer
  • 4/8 is closest to which benchmark fraction
    5·1 answer
  • Explain why the slope of the line drawn in part C must be negative.
    8·1 answer
  • Explain adpose tissue​
    11·2 answers
  • In 1QRS, q = 6.8 inches, r = 1.9 inches and angle S=141^ Find the length of s, to the nearest of an inch.
    9·1 answer
  • Which is the approximate area of a circular clock with a diameter of 10 inches?
    6·1 answer
  • Which of the following is equivalent to<br> (5) 7/3?
    6·2 answers
  • Which type of agency is responsible for maintaining public lands held in trust
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!