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
Mamont248 [21]
3 years ago
11

Find x when y = 5 in the literal equation 4x + 7y= 51.

Mathematics
2 answers:
Charra [1.4K]3 years ago
7 0

Answer:

x=4

Step-by-step explanation:

4x + 7y= 51

We replace y by 5 and determine x.

4x+7×5=51

4x+35=51

4x=51-35

4x=16

x=4

dmitriy555 [2]3 years ago
7 0

Answer:

x = 4

Step-by-step explanation:

<u>Step 1:  Substitute 5 for y and solve </u>

4x + 7(5) = 51

4x + 35 = 51

<u>Step 2:  Subtract 35 from both sides </u>

4x + 35 - 35 = 51 - 35

4x = 16

<u>Step 3:  Divide both sides by 4 </u>

4x / 4 = 16 / 4

<em>x = 4 </em>

Answer:  x = 4

You might be interested in
The floor of a rectangular deck has an area of 600 square feet. The floor is 20 feet wide. How long is the floor? A. 30 ft. B. 2
svetoff [14.1K]
<span>A. 30 ft
 The formula for the area of a rectangle is width x length = area. Knowing this formula, we can solve for the length by dividing the area by the width. 600 divided by 20 is 30.</span>
4 0
3 years ago
Read 2 more answers
*25 points* Hailey ran a few laps. D(n), models the duration (in seconds) of the time it took for Hailey to run her n^th lap. Wh
givi [52]

Answer:

B

Step-by-step explanation:

4 laps were ran between her 3rd and 7th lap (inclusive) and the duration increased by 14 seconds

But just 2 laps were ran between her 7th and 9th lap and the duration increased by 11 seconds

So obviously the lap duration increased faster between the 7th and 9th lap

5 0
3 years ago
Read 2 more answers
What is the volume of a rectangular prism with a length of 2x, a width of x−2, and a height of x + 2?
bagirrra123 [75]

\text{Volume of rectangular prism} = \text{Length} \times \text{Width} \times \text{Height}\\\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=2x(x-2)(x+2)\\\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=2x(x^2 -4)\\\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=2x^3-8x~~ \text{Units}^3

4 0
2 years ago
Read 2 more answers
What’s the answer to this
JulsSmile [24]

Step-by-step explanation:

undefined

6 0
4 years ago
Read 2 more answers
2x+1=5<br> Can you please answer my question
Firdavs [7]

Answer:

x = 2

Step-by-step explanation:

2x + 1 = 5

2x = 4

x = 2

8 0
3 years ago
Other questions:
  • Which expression shows the prime factorization of 20?
    9·1 answer
  • Jamie needs to build a fence around his garden, as illustrated by polygon ABCDEF on the coordinate grid below. If each unit repr
    6·1 answer
  • What is the term, coefficient and constants of 5c2+7d
    8·1 answer
  • 57/100 as a percent <br><br> Need answer ASAP
    13·1 answer
  • turn this sentence into an algebraic equation mike, who has 6 video games, has half as many games as Paul
    7·1 answer
  • At the ice cream shop. There are 14 shakes sold for every 6 malts. What is the ratio of malts to shakes
    8·2 answers
  • A loan of $4,000 was repaid at the end of 10 months with a check for $4,270. What annual rate
    5·1 answer
  • Can someone please help me like fast??
    9·1 answer
  • You work with 3 other students on a project for science class. Your group
    7·1 answer
  • How to write a paragraph proof for number 18?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!