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
Advocard [28]
3 years ago
6

The mean of four numbers is 7. Three of the numbers are 5,7 and 7. What is the fourth number?

Mathematics
2 answers:
GenaCL600 [577]3 years ago
7 0

Answer:

9 is the fourth number.

Step-by-step explanation:

9 is the fourth number because 7(mean) x 4(amount of numbers) = 28 and 7 plus 7 plus 5 plus 9 equals 28 so when you divide you get 7.

Marrrta [24]3 years ago
5 0

Answer:

fourth number is 9

Step-by-step explanation:

let 'x' equal the fourth number

(5+7+7+x)/4 = 7

cross-multiply to get:

19 + x = 28

x = 9

You might be interested in
Let’s look at another one of Homer’s rocket launches. It was launched from ground level with an initial velocity of 208 feet per
kozerog [31]

Answer:

Smax = 676 ft

the maximum altitude (height) the rocket will attain during its flight is 676 ft

Step-by-step explanation:

Given;

The height function S(t) of the rocket as;

S(t) = -16t2 + 208t

The maximum altitude Smax, will occur at dS/dt = 0

differentiating S(t);

dS/dt = -32t + 208 = 0

-32t +208 = 0

32t = 208

t = 208/32

t = 6.5 seconds.

The maximum altitude Smax is;

Substituting t = 6.5 s

Smax = -16(6.5)^2 + 208(6.5)

Smax = 676 ft

the maximum altitude (height) the rocket will attain during its flight is 676 ft

8 0
3 years ago
Please help me with my math problems
natulia [17]

Answer:

is it subtraction or addition?

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
If x+6 is an even integer, which one of the following must be an even integer?
Crazy boy [7]
D is the answer to this question
3 0
3 years ago
Read 2 more answers
Triangle ABC is reflected over the x-axis. What are the coordinates of the image of the vertex A?
marissa [1.9K]
The correct answer would be d (2,-5)
3 0
3 years ago
Maria paid $48 for herself and two of her friends to go to a concert. The tickets are all the same price. What equation could be
dimaraw [331]

Answer:

The answer is D. $48 = 3p

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Please Help!
    15·1 answer
  • What is the LCD of 8 5/12 and 3 5/8?
    13·1 answer
  • !SUBSTITUTION METHOD!<br><br>6y - 5z = -8 <br>3z = -6 <br>4x - 3y - 2z= 21​
    8·1 answer
  • The quadratic function in vertex form of a parabola vertex 1,1 and passes through 4,19
    7·1 answer
  • Mary did 20 jumping Jacks on Monday, 30 jumping Jacks on on Tuesday, and 20 jumping Jacks on Wednesday.
    9·2 answers
  • Mrs. Fox made $176.50 in three hours. How much did she make in one hour?
    14·2 answers
  • Evaluate p2t4 for p=6
    5·1 answer
  • Y+1=3(x – 4)<br> 2-intercept:<br> C<br> y-intercept:
    15·1 answer
  • (−6x2−x)−(−4x2+10x−1) perform operation
    14·1 answer
  • What is e+3/8=2 answer
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!