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3 years ago

What is the answer 4+4x=80

Mathematics

2 answers:

ratelena [41]3 years ago

4 0

Hope this helps with the answer to your question:)

Sonja [21]3 years ago

3 0

Answer:

x = 19

Step-by-step explanation:

80 - 4

= 76

4x = 76

76/4

= 19

x = 19

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On a car trip, Ben drove 65 miles more than half the number of miles Steve drove. Together they drove 500 miles. How many miles

tatyana61 [14]

Answer:

210 miles

Step-by-step explanation:

Let's represent it mathematically.

Ben drove 65 miles more than half the number of miles Steve drove, so we represent it by

B = 65 + ½S

It is also said that together, they drove 500 miles, we represent it with.

B + S = 500

Now, we solve simultaneously.

Let's eliminate the ½ in Ben's drive. So we multiply the equation by 2.

2B = 130 + S.

Rearranging, we have

S = 2B - 130.

We substitute this value of S, in the second equation. So we have.

B + (2B - 130) = 500, open the brackets

B + 2B - 130 = 500

3B - 130 = 500, collecting the like terms

3B = 500 + 130

3B = 630

B = 630/3

B = 210 miles.

Therefore, Ben drove 210 miles.

Kindly vote Brainliest.

7 0

4 years ago

If fx= 6x-4 what is<br> when x=8

ra1l [238]

Answer:

Step-by-step explanation:

fx=6(8)-4

fx=48-4

fx=44

6 0

3 years ago

Read 2 more answers

Will give brainliest answer

Fiesta28 [93]

Answer:

$153.86 \: {units}^{2}$

Step-by-step explanation:

$area = \pi {r}^{2} \\ = 3.14 \times 7 \times 7 \\ = 3.14 \times 49 \\ = 153.86 \: {units}^{2}$

5 0

3 years ago

Read 2 more answers

In right triangle HJK, angle J is a right angle and tan angle H = 1. Which Statement about triangle HJK MUST BE TRUE? A. Sin ang

Lubov Fominskaja [6]

I hope this helps you

tgH=HJ/HK

angle H+angle K=90

H=K=45 degree

sin45=cos46 = square root of 2/2

5 0

4 years ago

Read 2 more answers

The Epson workforce G7-1500 takes twice the time required by the Epson Workforce Pro GT-S50 to scan the manuscript for a book. I

neonofarm [45]

Let t be the time in minutes for the GT-S50 to scan the manuscript, working alone.
Then the G7-1500 will take 2t minutes to scan the manuscript, working alone.
If both machines work together for 1 minute they will scan 1/5 of the manuscript.
$\frac{1}{t} + \frac{1}{2t} = \frac{1}{5}$
$\frac{3}{2t} = \frac{1}{5}$
2t = 15
t = 7.5
When working alone, the machines will take the following times to scan the manuscript:
G7-1500: 15 minutes, GT-S50: 7.5 minutes.

7 0

4 years ago