Mathematics High School

Please show work! thank you :)

Answers

Answer 1

Answer:

c = 18

d = 36

Step-by-step explanation:

2c = d (equation 1)

c + d = 54 (equation 2)

Use substitution by putting 2c in the place of d on the second equation.

c + 2c = 54

3c = 54

Then divide both sides by 3 to get c (18).

Then use equation 1 to find d. Do this by putting 18 in the place of c.

2(18) = d

Solve, and the answer is d = 36

Related Questions

HELP HELP HELPHELP HELP HELPHELP HELP HELPHELP HELP HELPHELP HELP HELP

Answers

Answer:

Radius (r) = 4 cm

Diameter (d) = ?

Diameter (d) = 2r

d = 2 × 4

d = 8 cm.

If a number is increased by 4, its square increases by 64. Find the number

Answers

Answer:

The number is 6

Step-by-step explanation:

6+4=10

6^2=36

10^2=100

100-36=64

HELP ASAP ONLY ANSWER IF YOU KNOW ANY WRONG/ JOKE ANSWERS WILL BE REPORTED

Answers

Answer:

The answer would be B.

Because if you multiply all the numbers of ABC then go through the list of the A'B'C' options only B matches up

please help me i need it in less that 60 sec

Answers

Answer:

1/4

Step-by-step explanation:

found the answer use photomath

Find the value of x in each triangle

Answers

Both x’s are 77.5 because a triangle must add up to 180. If you know 25 you can subtract from 180 and divide by 2.

Answer:

Step-by-step explanation:

The sum of a triangle’s angles is always 180 degrees so

x+x+25=180

2x+25=180

2x=155

x=77.5 degrees

A movie theater uses five pounds of butter for their popcorn each day. After six days how many pounds of butter would they have used?

Answers

Um does 20 sound right?

PLZ HELP RN ILL MARK YOU BRAINLIST IF ITS RIGHT PLZZZ IM DESPERATE

Answers

Answer:

w = -0.5

Step-by-step explanation:

Divide the entire equation by -6.8 to cancel it out and get your "w" variable alone.

w = -0.5

Answer:

-0.5

Step-by-step explanation:

divide 3.4/-6.8= -0.5

Kylie wants to add 10 to 167. She thinks that the 6 represents the number of tens and thats by adding a 10 there are a total of 7 tens. Kylie believes the sum is 177. Which of the following is true about kylie's answer

Answers

Answer:

kylie is slow and so am i

Step-by-step explanation:

find the value of x...

Answers

Answer:

x = 23

Step-by-step explanation:

The 38 degree angle and the (6x +4) angle are supplementary which means both have to add up to 180 degrees. 180 - 38 leaves us with 142. When you plug in 23 to x you get (6(23) + 4) 6 times 23 is 138 and 138 plus 4 is 142. Which gives us our answer of x = 23.

Find the slope of the line

Answers

Answer:

Your answe is 1

Step-by-step explanation:

Formula : y2-y1/x2-x1

answer :

the slope is 1

27. Which expression is equivalent to (-8x + 2) - (6x + 9)?
A - 2x - 7
B
-2x + 11
C -14x - 7
D-14x +11

Answers

Answer:

option C is correct answer

I have made it in above picture

HELP PLZZZZ!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

Please help! 17/20. Will give brainliest! Spam answers will not be tolerated!
Factor. [tex]21x^2+22x-24[/tex]

Answers

Answer:

( x - 1 ) ( 2x + 24)

Step-by-step explanation:

2x² + 22x - 24

P= -48 , S = 22 , F = 24 and -2

2x² - 2x + 24x - 24

2x (x -1) +24 (x -1)

(x - 1) (2x + 24)

What is the height of a cylinder If the Volume is 250 ft and the diameter is 87

Answers

Answer:

h = 0.13

Step-by-step explanation:

Cylinder Volume Formula:

V = πr²h

Given:

V = 250

r = d/2 = 43.5

π = 3.14

Work:

V = πr²h

250 = π43.5²h

250 = (3.14)(1892.25)h

250 = 5941.665h

h = 250/5941.665

h = 0.13

The graph above shows Marilyn's distance from her
campsite during a 3-hour hike. She stopped for
30 minutes during her hike to have lunch. Based on
the graph, which of the following is closest to the
time she finished lunch and continued her hike?
A) 12:40 PM
B)
C)
1:10 PM
1:40 PM
D)
2:00 PM

Answers

Answer:c

Step-by-step explanation: By graph, it is clear that the closest time for lunch is 1:40pm as she spent more time in hiking after a constant time.

I need help with this will give you the brainliest

Answers

Answer:

Its A

Step-by-step explanation:

simplification of like terms

Felicia got a designer job with a company that pay $55,000/year. What is Felicia's gross monthly income?

Answers

Answer:

Felicia's gross monthly income = $4,583.33 (Approx.)

Step-by-step explanation:

Given:

Annual income = $55,000

Find:

Felicia's gross monthly income

Computation:

Gross income per month = Annual salary / Number of month in year

Gross income per month = Annual salary / 12

Felicia's gross monthly income = Annual salary / 12

Felicia's gross monthly income = 55,000 / 12

Felicia's gross monthly income = $4,583.33 (Approx.)

Which is more, 1 quart or 3 cups?

Answers

Answer:

1 quart is more.

Step-by-step explanation:

1 quart =4cups so 1 quart is more.

Answer:

1 liquid quart is more then 3 cups because 1 quart is the same as 4 cups and 4 cups is more then 3 cups...

ба = 26 + 4а

solve for a

Answers

a=13
just subtract 4a from both side so 6a-4a is equal 2a then divide 26/2 gives you 13 ! i hope this helps

6a = 26 + 4a
-4a -4a
——————-
2a = 26
————
2

a = 13

What is the value of x?
32
54
36
68
Help ASAP plz and thank you

Answers

Answer: i think its 36

Step-by-step explanation:

126 = x + 58

x = 126 - 58

x = 68

hope this helps... !!!

PLEASE HELP ITS MATH ASSAP
chose the correct rule for the following .
90° counter clock wise
x,y
-x,-y
-y,x
-y,-x

Answers

Answer:-y,x

Step-by-step explanation: It is rotateing into the negative part of a graph if you think about it.

Okay so HOW DO I DO THIS AND PLEASE HELP ME ASAP

Answers

The answer is 5 since the larger triangle is 8 times as larger than the smaller triangle.

Solve. x/2 - 7/6 < 4/3

x < -5

x > -5

x < 5

x > 5

Answers

Answer:

x<5

Step-by-step explanation:

x/2-7/6<4/3

x/2<4/3+7/6

x/2<8/6+7/6

x/2<15/6

x<15/6*2

x<30/6

x<5

a silo is a building shaped like a cylinder used to store grain the diameter of a particular silo is 6.5 meters and the height of the silo is 12 meters

Answers

Answer:

V=pi(3.25)^2(12)

Step-by-step explanation:

The “pi” is an actual sign

help me please! I’ll give y’all points

Answers

Answer:

Step-by-step explanation:

Answer:

Y = 11

Step-by-step explanation:

I think we are using the order of PEMDAS. We replace the x with 3. If we simplify this expression this is just 3 to the power of 2 multiplied by 2 then subtracted by 7. So 3^2 = 9 then 9 x 2 = 18. Then 18 minus 7 = 11.

What is the volume of the box if it is scaled down by a factor of 1/10 ?

Answers

Answer:

Step-by-step explanation:

The circumference of the
wheel on Beyoncé's bicycle
is 63 inches. What is the
diameter of the bicycle
wheel to the nearest inch?
Use 3.14 for a.

Answers

To the nearest inch it'll be

d×3.14=63

= 20 inches

PLEASE ANSWER ASAP CAUSE THIS QUIZ IS DUE SOON
Line R is represented by the following equation: x + y = 2
Which equation completes the system that is satisfied by the solution (1, 1)?
2x + y = 2
4x - 2y = 2
2x - 2y = 2
x + y= 4

Answers

Answer:

4x-2y=2

Step-by-step explanation:

Line R is represented by the following equation:

x+y=2

We need to choose another system of equation of x+y=2

whose solution is (1,1)

The equation must be satisfy the point (1,1)

Option 1: 2x+y = 2

Put x=1 and y=1

2(1)+1 = 3

3 ≠ 2

False

Option 2: 4x-2y=2

Put x=1 and y=1

4(1) - 2(1) = 2

2 = 2

True

Option 3: 2x-2y=2

Put x=1 and y=1

2(1) - 2(1) = 0

0 ≠ 2

False

Option 4: x+y=4

Put x=1 and y=1

1+1 = 2

2 ≠ 4

False

Hence, The system of equation is 4x-2y=2

point(3,2) lies on the line given by the equation 5x-y=20.Find m.

Answers

Answer:

Slope of the line 'm' = 5

Step-by-step explanation:

Step(i):-

Given that the straight line

5 x - y = 20

⇒ 5x - 20 = y

y = 5 x - 20

Step(ii):-

The equation of the straight line having to slope 'm'

y = m x + c

given that the straight line

y = 5x +20

comparing y = m x + c

Slope of the line 'm' = 5

what is the value of ( 7 plus 2 cubed) x 9

Answers

Answer:

135

Step-by-step explanation:

[tex](7 + 2 {}^{3} ) \times 9 \\ = (7 + 8) \times 9 \\ = 15 \times 9 \\ = 135[/tex]

Answer:

135

Step-by-step explanation:

2 cubed=8

8+7=15

15x9=135

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