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Mars2501 [29]
3 years ago
5

7v=2v-20 what is the answer

Mathematics
1 answer:
Ierofanga [76]3 years ago
7 0
7v = 2v - 20

First, subtract 2v from both sides. / Your problem should look like: 7v - 2v = -20
Second, simplify 7v - 2v to 5v. / Your problem should look like: 5v = -20
Third, divide both sides by 5. / Your problem should look like: v = - \frac{20}{5}
Fourth, simplify \frac{20}{5} to 4. / Your problem should look like: v = -4

Answer: v = -4


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Please help me, will mark brainliest for correct answers.....
Alexandra [31]

Answer:

1. B) 5.7

2. A) 12

3. A) 11.4

4. A) 5.7

5. A) 16.2

6. A) 11.2

7. No, they do not form a right triangle

8. Yes, they do form a right triangle

Step-by-step explanation:

Extra tip: The hypotenuse has to be less than both sides added together, but cannot be more than either of the sides alone.

1.

16² + b² = 17²

256 + b² = 289

256 - 256 + b² = 289 - 256

b² = 33

√b² = √33

b = 5.74 or 5.7

2.

16² + b² = 20²

256 + b² = 400

256 - 256 + b² = 400 - 256

b² = 144

√b² = √144

b = 12

3.

7² + 9² = c²

49 + 81 = c²

130 = c²

√130 = √c²

11.40 or 11.4 = c

4.

7² + b² = 9²

49 + b² = 81

49 - 49 + b² = 81 - 49

b² = 32

√b² = √32

b = 5.65 or 5.7

5.

a² + 5² = 17²

a² + 25 = 289

a² + 25 - 25 = 289 - 25

a² = 264

√a² = √264

a = 16.24 or 16.2

6.

10² + b² = 15²

100 + b² = 225

100 - 100 + b² = 225 - 100

b² = 125

√b² = √125

b = 11.18 or 11.2

7.

15² + 8² = 16²

225 + 64 = 256

289 ≠ 256

8.

5² + 12² = 13²

25 + 144 = 169

169 = 169

8 0
3 years ago
Find the value of x.
ehidna [41]

Answer:

x = 25

Step-by-step explanation:

We know that the remaining angles add up to 90°, because the right angle (triangles have 180° total.)

2x + 15 + x = 90 | Given

3x + 15 = 90 | Combine x

3x = 75 | Subtract 15

x = 25

4 0
2 years ago
What theorem shows that GTY=GUX?
wlad13 [49]

Answer:SAS

Step-by-step explanation:

The line show congruent line which means two sides. Since it has vertical angles it has a angle.

6 0
3 years ago
Max lost 128 pounds in 16 weeks on his new weight-loss plan. What was his average change in weight per week?
Alex

Answer:

8 pounds per week

Step-by-step explanation:

AVG= total/time span

so

AVG= 128/16

AVG= 8 pounds per week

Hope this helps!

7 0
2 years ago
At yesterdays ball game, 2,842 tickets were sold. The price of each ticket was $7.50. Which amount is closest to the total amoun
Margarita [4]

Answer:

C. $20,000

Step-by-step explanation:

2,824*$7.50=$21,315

6 0
3 years ago
Read 2 more answers
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