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
Marysya12 [62]
3 years ago
13

30,45,x,100; the mean is 60

Mathematics
2 answers:
Andrei [34K]3 years ago
6 0

if there are 4 numbers that average to 60, when mutiplied they must come up to: 60*4= 240

100+30+45= 175

240-175= 65

PROOF:

100+30+45+65= 240

240÷ 4

= 60

soldier1979 [14.2K]3 years ago
6 0

Answer:

x=65

Step-by-step explanation:

Mean= <u>s</u><u>u</u><u>m</u><u> </u><u>o</u><u>f</u><u> </u><u>t</u><u>e</u><u>r</u><u>m</u><u>s</u>

number of terms

60=<u>3</u><u>0</u><u>+</u><u>4</u><u>5</u><u>+</u><u>x</u><u>+</u><u>1</u><u>0</u><u>0</u>

4

240=<u>1</u><u>7</u><u>5</u><u>+</u><u>x</u>

x=240-175

=65

You might be interested in
Really struggling on this
navik [9.2K]
Angle 4 would be 77degrees because angle two is vertical to angle four.

Angle 3 and Angle 1 are equal because they are vertical to each other.

You would subtract 180 (degrees) minus 77 (degrees) and get 103 (degrees).

So Angle 3 and Angle 1 would both be 103 degrees.

You would get 180 degrees from the line.

5 0
1 year ago
Please Answer!
SCORPION-xisa [38]
4a-3

because 4(a-3) what’s in () can’t be done so you go to the next step in pemdas and multiply and then you write it out and your done
7 0
2 years ago
Read 2 more answers
The initial number of views for a blog was 10. The number of views is expected to grow at a rate of 15% per week. How many views
Norma-Jean [14]

Answer:

  • 20 views

Step-by-step explanation:

  • Initial number = 10
  • Weekly growth rate = 15% or 1.15 times

<u>Equation for this relationship:</u>

  • V(t) = 10*1.15^t, where t - number of weeks

<u>Number of views in 5 weeks:</u>

  • V(5) = 10*1.15^5 = 20 views (rounded)
5 0
3 years ago
9. The ages of A and B are in the ratio 3:5. Four years later,
Tom [10]

Answer:

A = 15  B = 25       in four years  19+29 = 48

Step-by-step explanation:

age A and B ratio is 3 to 5

A+4 + B+4 = 48

    A + B  = 40

    A/B = 3/5     A = 3B/5

    A + B  = 40

 3B/5 + B  = 40

   3B  + 5B = 200          multiple both sides by 5

       8B  = 200

         B  =  25

         A  = 3B/5

         A  = 3(25)/5

         A  = 15

8 0
3 years ago
Read 2 more answers
Help me please i’m struggling, u don’t have to explain
Rom4ik [11]
<h3>Answer:  10 cm  (choice A)</h3>

====================================================

Explanation:

One equation we could solve is

x/2.5 = 30/7.5

Note the x/2.5 has us dividing the vertical sides, while 30/7.5 is the same idea for the horizontal sides. The order is large over small. You could do small over large, but make sure you keep both sides consistent.

Solving for x leads to...

x/2.5 = 30/7.5

x*7.5 = 2.5*30

7.5x = 75

x = 75/7.5

x = 10  (choice A)

There are many other possible equations that lead to the same answer. One other possible equation is x/30 = 2.5/7.5

These proportions are possible due to the fact we have similar triangles.

7 0
2 years ago
Other questions:
  • A car maintains a speed of 23 mi/h for 5 seconds. It then accelerates to a speed of 46 mi/h in 5 seconds. It maintains that spee
    5·2 answers
  • Besides a histogram what are some other ways you can display these data
    5·1 answer
  • The following information is known about a loan. Time = 8 years Interest rate = 14% Principal = $1,010 What is the total amount
    6·2 answers
  • Work out the value of 4 lots of 10​
    8·2 answers
  • Can someone explain interval notations? Also, How do you figure them out?
    11·1 answer
  • Determine the value of the variable in the simplified expressions. What is the value of x in this simplified expression? (Negati
    12·2 answers
  • I will give out a brainliest... write any equation that adds up to 35.5
    7·2 answers
  • What is the value of the digit 5 in the number 75
    15·1 answer
  • BRAINLIEST PLUS 30 points
    6·2 answers
  • HELP ASAP (best answer will get marked BRAINELEST)<br> solve step-by-step for each Question
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!