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VARVARA [1.3K]
2 years ago
14

A certain number is subtracted from 20.the result multiplied by 3 is equal to 45. What is the number?

Mathematics
1 answer:
Bess [88]2 years ago
6 0
I believe the answer is 35.



Explanation:


If you divide 45 by 3, you get 15. 20 + 15 = 35, hence the answer.
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Algebra 2 homework help please!
anygoal [31]
Always remember.... x= -14
4 0
3 years ago
Find the area of a Parallelogram if it was 2 cm and 6 cm
Alex777 [14]
12 cm is your answer

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6 0
3 years ago
13x−2=<br>  <br>  <br> −<br> 10<br> x<br> −<br> 2<br> −10x−2
Misha Larkins [42]

Answer:

x=0

Step-by-step explanation:

13x-2 = 10x-2

Subtract 10x from each side

13x-10x-2 = 10x-2 -10x

3x-2 = -2

Add 2 for each side

3x-2+2 = -2+2

3x= 0

divide by 3

3x/3 = 0/3

x =0

3 0
3 years ago
While visiting a​ memorial, a person approximated the angle of elevation to the top of the memorial to be 35º. After walking 255
Alenkasestr [34]

Draw a diagram to illustrate the problem as shown in the figure below.

Let h the height of the hill. =

At position A, the angle of elevation is 40°, and the horizontal distance to the foot of the hill is x.

By definition,

tan(40°) = h/x h = x tan40 = 0.8391x

(1)

At position B, Joe is (x - 450) ft from the foot of the hill. His angle of elevation is

40 + 18 = 58°.

By definition, tan(58°) = h/(x - 450)

h = (x - 450) tan(58°) = 1.6003(x-450)

h = 1.6003x - 720.135 (2)

Equate (1) and (2).

1.6003x - 720.135 = 0.8391x 0.7612x = 720.135

x = 946.0523

From (1), obtain

h = 0.8391*946.0523 = 793.8 ft

Answer: The height of the hill is approximately 794 ft (nearest integer)

6 0
3 years ago
Use the picture to find each of the following
goldfiish [28.3K]

\large{ \tt{☄ANSWERS \: +   \: REASONS}} :

  • \large{ \tt{ \angle \: 7 =  \boxed{ \tt{38 \degree}}}} \: ( \text{Being \: alternate \: angles)}

  • \large{ \tt{38 \degree + \angle 4 = 180 \degree}}( \text{Sum \: of \: co - interior \: angles}

\:  \:  \:  \:  \:  \large{ \tt{ ↦\angle \: 4 = 180 \degree - 38 \degree  =  \boxed{ \tt{142 \degree}}}}

  • \large{ \tt{ \angle \: 1 =  \angle \: 4 =   \boxed{ \tt{142 \degree}( \text{Being  \: vertical \: angles)}}}}

  • \large{ \tt{ \angle \: 8 =  \angle \: 4 =  \boxed{ \tt{142 \degree} \text{(Being \: corresponding \: angles)}}}}

  • \large{ \tt{ \angle \: 6 =  \angle \: 1 =  \boxed{  \tt{142 \degree} \text{(Being \:corresponding \: angles) }}}}

  • \large {\tt{  \angle \: 2 = \boxed{\tt{38 \degree}}\text{(Being \: corresponding \: angles)}}}

  • \large{ \tt{ \angle \: 3 = \boxed{\tt{38 \degree} }\text{(Being \: alternate \: angles)}}}

\large{ \tt{✺ \: TIPS} }:

  • If you have planned for study at 8:00 and now it's 8:05 then don't wait for 9 : 00 , Start studying that subject right now ! ♪

\large{ \tt{❃ \: LEARN \: ABOUT \: ALTERNATE \: , CORRESPONDING\:AND \: CO - INTERIOR \: ANGLES}} :

  • brainly.com/question/17147541

ツ Hope I helped! ♡

☼ Have a wonderful day / evening ! ☃

# StayInAndExplore ! ☂

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8 0
3 years ago
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