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tatiyna
3 years ago
8

What is the value of x in this equation? 5 + x = 13 a. x=13 b.x=18 c. x=7 d. x=8

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
6 0
D
X=8

5+x=13
-5 from both sides
X=8
Scilla [17]3 years ago
4 0
The answer is d. x=8

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I need some help! Thanks a bunch!
lora16 [44]
Hmmm I think the answer it’s D
5 0
4 years ago
A car uses 8 gallons of gasoline to travel 192 miles. How many gallons are used to go 144 miles? *
antiseptic1488 [7]

Answer:

6 gallons

Step-by-step explanation:

You can find this using the ration method.

If, 8 gallons : 192 miles

   x gallons : 144 miles

We must find the value of x, which is the number of gallons used to travel 144 miles.

Cross multiply the ratios.

192 x = 8 × 144

192 x = 1152

x = 1152 ÷ 192

x = 6

∴ It takes 6 gallons to travel 144 miles.

8 0
3 years ago
HELP PLEASE ASAP! I really need it!
Tomtit [17]

- 4\sqrt[]{x - 3} = 12 \\  \sqrt{x - 3}   =   \frac{12}{ - 4}  \\  \  \sqrt{x - 3}  =  - 3 \\ x - 3 =  { (- 3)}^{2}  \\ x = 12
the answer is D
6 0
3 years ago
How to do? I don't really understand this question
Bas_tet [7]
If 35% of toms shirts are equal to 40% of jos shirts, then you just have to find the amount of 40% of jos shirts, which is 28, found by " 70/100 x 40 " so 35% of toms shirt is 28, to answer this question, you will only have to find 5% of toms shirt which is 4 " 28/35 x 5 " therefore, multiply 4 which is 5% of toms shirts with 20, which gives you 80 , and is the amount of shirts tom has, to get the final answer for this question, just subtract 80-70=10
10 is the answer
4 0
4 years ago
Read 2 more answers
Which x value makes this equation true? Explain how you can tell
MrMuchimi

Answer:

b) x = 4

Explanation:

2x^2 - x + 10 = 38

collect variables

2x^2 - x + 10 - 38 = 0

simplify

2x^2 - x - 28 = 0

breakdown

2x^2 -8x + 7x - 28 = 0

factor out

2x(x - 4) + 7(x - 4) = 0

collect into groups

(2x + 7)(x - 4) = 0

set to zero

2x + 7 = 0, x - 4 = 0

relocate variable

2x = -7, x = 4

final solutions

x = -3.5, x = 4

3 0
2 years ago
Read 2 more answers
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