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dolphi86 [110]
3 years ago
10

What is the value of x? ​

Mathematics
1 answer:
mr Goodwill [35]3 years ago
5 0

Answer:

x = 7

Step-by-step explanation:

Similar

The two triangles

1) the one making up the peak of the large triangle

2)the large triangle  

are similar. That is because the 2 bases are parallel and corresponding angles are equal. The third angle at the peak is common. So by AAA they are similar.

Proportion

Therefore the sides are in proportion.

5/40 = 3/(2x + 10)

Solution

Cross multiply

5*(2x + 10) = 40*3

Remove the brackets on the left. Combine the right.

10x + 50 = 120          

Subtract 50 from both sides

10x + 50 - 50 = 120 - 50

10x = 70

Divide by 10

10x/10 = 70/10

x = 7

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jeka94

Answer:

sorry i don't speak spanish but if i did i would have gave u the answer

Step-by-step explanation:

6 0
3 years ago
A 9<br> B 18<br> C 4.5<br> D 19<br><br> Thanks
irina1246 [14]

Answer:

The answer is C. 4.5. Hope that helps.

Step-by-step explanation:

7 0
3 years ago
Find the measure of one interior angle in each regular polygon. round your answer to the nearest 10th if necessary.
dem82 [27]

Answer:

140 degree or Answer D

Step-by-step explanation:

140 degrees is the answer for a Nonagon

8 0
2 years ago
Helppp pt.5 plzzzzz​
Fiesta28 [93]

Answer: 60 cm²

Step-by-step explanation:

This is pretty simple, we know AB is 12 cm and DE is 4 cm. We know ABC has a total of 180 square centimeters. So...

12 ÷ 3 = 4

180 ÷ 3 = 60

The answer is 60 cm²

I hope this helps!

6 0
2 years ago
A swimming coach needs to choose a team for a relay race. The coach must select 4 of 6 available swimmers
Trava [24]

The number of unique ways is given by the number of possible

combination having distinct members.

The number of unique ways there are to arrange 4 of the 6 swimmers are <u>15 ways</u>.

Reasons:

The given parameters are;

The number of swimmers available = 6 swimmers

The number of swimmers the coach must select = 4 swimmers

Required:

The number of unique ways to arrange 4 of the 6 swimmers.

Solution:

The number of possible combination of swimmers is given as follows;

_4C_6 = \dfrac{6!}{4! \times (6 - 4)!}  = 15

Therefore, the coach can select 4 of the 6 available swimmers in <u>15 unique ways</u>

Learn more here:

brainly.com/question/23589217

8 0
2 years ago
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