1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DIA [1.3K]
3 years ago
8

Find the value of each variable.

Mathematics
1 answer:
sineoko [7]3 years ago
7 0

Answer:

19. x = 65

20. x = 12

21. x = 35, y = 85

Step-by-step explanation:

19. 2x -10 = 120

2x (-10 + 10) = (120 +10)

2x/2 = 130/2

x = 65

20. 2x + 4x + 108 = 180

6x + (108 - 108) = (180 - 108)

6x/6 = 72/6

x = 12

21. 2x + 25 = 3x - 10

2x + (25 - 25) = 3x (- 10 - 25)

(2x - 3x) = (3x - 3x) - 35

-x/-1 = -35/-1

x = 35

3x - 10 + y = 180

3(35) - 10 + y = 180

105 - 10 + y = 180

(95 - 95) + y = (180 - 95)

y = 85

You might be interested in
Explain each step in the process of finding the area of a circle given the circumference.
Mama L [17]

Answer:

plug in your numbers and solve

Step-by-step explanation

5 0
3 years ago
Read 2 more answers
Sue read 129 pages. Mary read 74 pages. How many more pages did Sue read than Mary?
Ber [7]

sue read 55 more pages then mary

7 0
2 years ago
Read 2 more answers
Cherie is jogging around a circular track. She
skelet666 [1.2K]

Answer:

Measure of minor angle JOG is 95.5^{\circ}

Step-by-step explanation:

Consider a circular track of radius 120 yards. Assume that Cherie starts from point J and runs 200 yards up to point G.  

\therefore m JG = 200 yards, JO=120 yards.  

Now the measure of minor arc is same as measure of central angle. Therefore minor angle is the central angle \angle JOG = \theta.

To calculate the central angle, use the arc length formula as follows.  

Arc\:Length\left(s\right) = r\:\theta  

Where \theta is measured in radian.

Substituting the value,

200=120\:\theta  

Dividing both side by 120,

\dfrac{200}{120}=\theta  

Reducing the fraction into lowest form by dividing numerator and denominator by 40.

\therefore \dfrac{5}{3}=\theta  

Therefore value of central angle is \angle JOG = \theta=\left(\dfrac{5}{3}\right)^{c}, since angle is in radian

Now convert radian into degree by using following formula,

1^{c}=\left(\dfrac{180}{\pi}\right)^{\circ}

So multiplying \theta with \left(\dfrac{180}{\pi}\right)^{\circ} to convert it into degree.

\left(\dfrac{5}{3}\right)^{c}=\left(\dfrac{5}{3}\right) \times \left(\dfrac{180}{\pi}\right)^{\circ}

Simplifying,

\therefore \theta = 95.49^{circ}

So to nearest tenth, \angle JOG=95.5^{circ}

8 0
3 years ago
Please help and thank you
mamaluj [8]

Answer:

C

Step-by-step explanation:

a is defined first as 5. So a = 5.

b is defined after the circle b = -2

a^2 = 5^2 = 25

B^4 =(- 2)^4 = 16

Therefore sqrt(a^2 * b^4) = sqrt(25 * 16) = sqrt(400) = 20

The answer is C

5 0
3 years ago
Read 2 more answers
Emma has a gift box in the shape of a cube. Each side of the box measures 9 centimeters. What is the volume of the gift box?
BARSIC [14]

Answer:

729

Step-by-step explanation:

Each side of the cube measures 9cm

The volume of a cube is V^3

Therefore the volume can be calculated as follows

= 9^3

= 729

Hence the volume is 729

3 0
2 years ago
Other questions:
  • Nelson grows tomatoes and sells them at a nearby farmers roadside stand. He sells them for $2.50 each. The farmer charges him $1
    5·1 answer
  • Suppose it took 19 riders a total of 11 days 21 hours to ride from st Jospeh to Sacramento. If they all rode the same number of
    8·1 answer
  • The sum of two numbers is <br> 40<br> . One number is <br> 4<br> times as large as the other.
    15·1 answer
  • What is the probability of first drawing a red card, then a face card, and then a black card? Do not round your intermediate com
    7·1 answer
  • Ben walks 2 m from his desk to the teacher's desk. From the teacher's desk, he then walks 3 m in the same direction to the class
    12·2 answers
  • I need a quick response! Please help!
    7·1 answer
  • The price piece of the pizza is $6.95 plus $.95 for each topping t you on the pizza write function rule for the situation?
    15·1 answer
  • Use a calculator to find the correlation coefficient of the data set.
    7·1 answer
  • Are the rectangles below similar Justify your answer.
    13·1 answer
  • Which number best represents the location of point A on the number line shown?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!