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tankabanditka [31]
3 years ago
7

What is the value of x?

Mathematics
1 answer:
Dafna1 [17]3 years ago
3 0

Answer:

28


Step-by-step explanation:

We use the concept of similarity to find the value of X.

Δ APR ≡  ΔCDR

∴ AR/CR = PR/DR

   (10+x)/x = (15+42)/42

42(10+x) = 57x

420 + 42x = 57x

57x - 42x = 420

15x = 420

x = 420/15

  = 28

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The two angles of an obtuse triangle are 230 and 470. Find the third obtuse angle
Julli [10]

Answer:

the third obtuse angle is 110°.

Step-by-step explanation:

From the question, the 0s at the back of the given angles are meant to be degrees (°), since the sum of angles in a triangle cannot exceed 180°.

Hence, The question would be:

The two angles of an obtuse triangle are 23° and 47°. Find the third obtuse angle .

Step-by-step explanation:

In a triangle, there are three (3) angles which sum up to 180°.

Two of the angles are given which are 23° and 47°. Now, to determine the third angle which is an obtuse angle.

(NOTE: An obtuse angle is a type of angle that is greater than 90° but less than 180°).

Let the third obtuse angle be x

Then , we can write that

23° + 47° + x = 180° (Sum of angles in a triangle)

Then,

70° + x = 180°

x = 180° - 70°

x = 110°

Hence, the third obtuse angle is 110°.

4 0
3 years ago
0.75(2 + 6 x 4 - 2 x 7 - 2) A. 1 B. 5.25 C. 8.5 D. 22.5
Alekssandra [29.7K]

Hey there!

ORIGINAL EQUATION:
0.75(2 + 6 x 4 - 2 × 7 - 2)

WORKING WITHIN the PARENTHESES:
2 + 6 x 4 - 2 × 7 - 2

= 2 + 24 - 2 × 7 - 2

= 26 - 2 × 7 - 2

= 26 - 14 - 2

= 12 - 2

= 10


NEW EQUATION:

0.75(10)


SIMPLIFY IT!
7.50 ≈ 7.5


Therefore, your answer should be: 7.5



~Amphitrite1040:)

5 0
3 years ago
Help please fast grade 5 math help extra points to thooese who explain marking brainliest
ipn [44]
7/12 x 4= 28/12 and good luck again
6 0
2 years ago
A smoothie recipe calls for 3 cups of soy milk, 2 frozen bananas and, 1 tablespoon of chocolate syrup. Write a sentence that use
anyanavicka [17]

Answer:

3:2:1

Step-by-step explanation:

4 0
3 years ago
Determine the intercepts of the line.<br> Do not round your answers.<br> Y=5x-13
insens350 [35]

Answer:

y intercept:(0,-13)
x intercept: (13/5,0)

Step-by-step explanation:

The way we find intercepts (both x and y) is to plug in zero.

x int:

We set y to 0:

0=5x-13

add thirteen to both sides

13=5x

x=13/5

y int:

set x to zero

y=5(0)-13

y= - 13

4 0
3 years ago
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