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Zepler [3.9K]
3 years ago
11

Find the value of x. help please

Mathematics
2 answers:
vampirchik [111]3 years ago
5 0

Answer:

x=10

Step-by-step explanation:

It's a 90 degree angle.

90-60=30

30=the remaining angle, 3x

x=30/3, or 10

Hope I helped!

Serjik [45]3 years ago
4 0

Answer:

0

Step-by-step explanation:

pretty sure don't trust me though

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Solve the proportion for n.<br> 1260/20=n/1
zzz [600]

Answer: n = 63

Step-by-step explanation:

1260/20 = n/1

63/1 = n/1

n = 63

4 0
3 years ago
What are the solutions of the equation x4 – 5x2 - 36 = 0? Use factoring to solve.
balandron [24]

Answer:

x = -2i and x = 2i

x = 3 and x = - 3

Step-by-step explanation:

x^4 - 5x^2 - 36 = 0

let u = x^2 and substitute

we have:

u^2 - 5u - 36 = 0

(u - 9)(u + 4) = 0

u = 9 and u = - 4

substitute back for u

x^2 = 9

x = 3 and x = - 3

x^2 = -4 -- i am going to assume you've learned imaginary numbers; otherwise, you cannot take the square root of a negative number.

x = -2i and x = 2i

5 0
3 years ago
Which shape is an equivalent fraction to this fraction? 3/4<br><br> 10/14<br> 7/8<br> 6/8<br> 4/7
Pavlova-9 [17]

Answer:

6/8

Step-by-step explanation:

3/4

Multiply by 2/2

3/4 *2/2 = 6/8

3 0
3 years ago
2. measure of an angle that is supplementary to
leonid [27]
Answer: 99°

explanation: first, we need to find angle T. we know that angle T and angle R are vertical angles, which means they’re the same. therefore, we solve the equation for x by doing angle T = angle R:
3x + 36 = 6x - 9
subtract 36 on both sides
3x = 6x - 45
subtract 6 on both sides
-3x = -45
divide both sides by -3
x= 15
then, plug in the value of x in 3x+36 to get angle T:
3(15) + 36= 81°
we found that angle T is 81°.
now, we need to find the supplementary angle of angle T. supplementary angles add up together to have a sum of 180°. to find the supplementary angle, subtract angle T from 180°:
180 - 81 = 99°
there we have the answer!
7 0
3 years ago
Equation A: y = -9x + 14
Sergio [31]
The solution is (2,-4)
4 0
3 years ago
Read 2 more answers
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