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
Lelu [443]
3 years ago
10

the sum of three numbers is 85. The second is 7 more than the first. The third is 2 more than four times the second. Find the nu

mbers
Mathematics
1 answer:
Jet001 [13]3 years ago
8 0
The first number - x
The second number is 7 more than the first - x+7
The third number is 2 more than 4 times the second - 4(x+7)+2
The sum of the numbers is 85.

x+x+7+4(x+7)+2=85 \\
x+x+7+4x+28+2=85 \\
6x+37=85 \ \ \ |-37 \\
6x=48 \ \ \ |\div 6 \\
x=8 \\ \\
x+7=8+7=15 \\
\\ 4(x+7)+2=4 \times 15+2=60+2=62

The numbers are 8, 15 and 62.
You might be interested in
(c) Express the diagonal of a rectangle, D, in terms of its width, w, if the area of the rectangle is 13 square feet.
Mrrafil [7]
We are asked to express the diagonal of a rectangle in terms of the width in which the area of the polygon is equal to 13 square feet. The area of teh rectangle is equal to length times width. That is 13 = lw; diagonal using pythagorean theorem is sqrt ( l2 + w2). Thus d =  sqrt ( (13/w)2 + w2) = sqrt ( (169/w2 + w2) = sqrt ( (169 + w4)/w2) = 1/w  sqrt (169 + w4)
3 0
3 years ago
Read 2 more answers
Write two different expressions to represent the sale price of a fishing pole, f, after a 20% discount.
Rom4ik [11]

Answer:

When we have a discount of X% of the original price, the new price is calculated as:

New price = (original price) - (original price)*(X%/100%)

In our case, let's define:

P = original price of the fishing pole

f = price of the fishing pole after the discount

X% = 20%

Then the equation for the price of the fishing pole is:

f = P - P*(20%/100%) = P - P*0.2 = P*(1 - 0.2) = P*0.8

f = 0.8*P

This means that the price after the discount is 0.8 times the original price.

7 0
3 years ago
Can anyone help me on this and pls explain this
7nadin3 [17]
I can’t really see it well
3 0
3 years ago
What is the value of x
geniusboy [140]

Answer:

11

Step-by-step explanation:

3x+2

3(11)+2

33+2

35

6 0
3 years ago
Find the total surface area.
Ede4ka [16]

Hey love! <3

Answer:

The right answer is A = 49.6 π ft^2

Step-by-step explanation:

<em><u>(Let pi = 3.1415926535898)</u></em>

<em>The formula for calculating the surface area of a cylinder is A=2πrh+2πr^2</em>

<em>So if r = 4 ft</em>

<em>and h = 2.2 ft</em>

<em>A= 2π(4)(2.2)+2π(4)^2</em>

<em>Once we've plugged in our formulas our final surface area is A =</em><em> 49.6 π ft2</em>

<em />

<em>Hope this helped you calculate the surface area! ◃┆◉◡◉┆▷ Sincerely, Kelsey from Brainly.</em>

<em />

<em>~ #LearnWithBrainly ~</em>

8 0
3 years ago
Read 2 more answers
Other questions:
  • Can 27:6 be simplified
    5·2 answers
  • what is as big as an elephant but does not weigh as much as an elephant ill give a brainiest to the first correct answer
    5·2 answers
  • PLEASE HELP ME! 22 POINTS!!!
    8·1 answer
  • In a golf tournament, players competed in pairs. Joey and Melissa were partners. Joey got a score of +8, and Melissa got a score
    14·1 answer
  • How many seconds did the race last?
    12·1 answer
  • Three is what percent of eight
    10·1 answer
  • What is this answer
    5·1 answer
  • Elaine had StartFraction 5 Over 8 EndFraction of a pizza left after lunch. She told 5 of her friends that they could share the r
    13·1 answer
  • HELP PLEASEEEE!!!
    12·1 answer
  • Prove the following integration formula:
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!