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Lana71 [14]
3 years ago
12

Please solve for X. 52–r= 5-42

Mathematics
1 answer:
ddd [48]3 years ago
6 0

Answer:

-89

Step-by-step explanation:

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If a triangle is 12 inches high and has a 20 inch long hypotenuse then how wide is it?
Ber [7]

Answer:

The triangle should be 16 inches wide.

Step-by-step explanation:

\text {Use the Pythagorean Theorem to solve for the leg.}\\a^2 + b^2 =c^2

What we know:

  • One of the legs measures 12 inches.
  • The hypotenuse is 20 inches.

We need to solve for b. Solving for a while b is 12 would also be acceptable.

12^2 + b^2 = 20^2  \text {  OR  }   a^2 +12^2=20^2

We will use the first equation.

12^2 + b^2 = 20^2\\12 * 12 = 144\\20 * 20 = 400\\\\\boxed {144 + b^2 = 400}

\text {Subtraction property of equality: }\\144-144+ b^2 = 400-144\\\boxed {b^2 = 256}\\\\\text {Take the square root of 256: }\\\sqrt{256}=\sqrt{b^2} \boxed {16 = b}

The triangle should be 16 inches wide.

3 0
4 years ago
What is the radius of a sector of a circle with the central angle of measure 45 and whose area is 9/8 pi cm^2
larisa86 [58]

The radius of the sector of the circle with the given area is: B. 3.

<h3>What is the Area of a Sector?</h3>

Area of sector of a circle = ∅/360 × πr².

Given the following:

Area of sector = 9/8 π cm².

∅ = 45 degrees

Plug in the values into the formula

9/8π = 45/360 × πr²

1.125 = 0.125 × r²

1.125/0.125 = r²

9 =  r²

r = 3 cm

Learn more about the area of sector on:

brainly.com/question/22972014

#SPJ1

5 0
2 years ago
Write the number equal to 2 tens 15 ones
ivann1987 [24]
I believe it's 15, but correct me if I'm wrong
This is because there is one 10 in 15. This gives you 3 tens and 5 in the ones.
6 0
4 years ago
Read 2 more answers
Help me and i will give every thing brainiest and thank and rating
mrs_skeptik [129]

Answer:

1. D

2. C

3. B

4. A

7 0
3 years ago
A golf ball,thrown upwards ,rises at a speed of V metres per second the ball reaches a maximum height of h metres. h is proporti
madreJ [45]

Answer:

24.5m

Step-by-step explanation:

given h is proportional to v² or

h ∝ v²

we can write this in terms of constant k

h = kv²

given h = 8 when v = 20

h = kv²

8 = k 20²

8 = 400k

k = 8/400 = 0.02

hence our equation becomes

h = 0.02v²

when v = 35

h = 0.02 (35²)

h = 24.5 meters

4 0
3 years ago
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