Mathematics High School

Please show work! thank you :)

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

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

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...

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

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

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:

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

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

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

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

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

Answers

Answer:

11

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.

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

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.

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)

please help me i need it in less that 60 sec

Answers

Answer:

1/4

Step-by-step explanation:

found the answer use photomath

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

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

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.

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

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

Answers

Answer:

B

Step-by-step explanation:

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?

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... !!!

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

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

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.

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.

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

Answers

Answer:

34

Step-by-step explanation:

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.)

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.

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

Other Questions
Can someone give me there opinion on this Jefferson is interested in starting his own business. He plans to borrow money from the local bank in order to finance the business. They will require him to submit a business plan and a(n) _____.a.buy-out planb.income statementc.partnership agreementd.financial plan How did the Glaciers from the last ice age affect the North American continent Based on the context, what is the meaning of the word concise in the following sentence?Her writing was so concise that she could tell in two sentences what others needed two paragraphs to say.(1 point)open to interpretationlong-winded and detailedbrief but informativefull of errors Determine from the balanced chemical reaction ifthe derived mole ratio is correct or incorrect.2FeBr3 + 3Na2S Fe2S3 + 6NaBr2 moles FeBra3 moles Na2S Arianna invests $2,000 into an ETE which earns 2% per year. In 10 years, how much will Arianna's investment be worth if interest is compounded monthly? Round to the nearest dollar. Workspace V 3 < TI one sentence with a school subject you like. Remember to use the correct format and pronoun for the verb gustar. (e.g., I like social studies.)one sentence stating what day or days you have the class. Remember to use the yo form of the verb tener. (e.g., I have social studies on Monday and Wednesday.)one sentence with a school subject you do not like. Remember to use the correct format and pronoun for the verb gustar. (e.g., I don't like technology class.)one sentence stating two school supplies you need for that class. Remember to use the yo form of the verb necesitar. (e.g., I need a computer and a mouse for technology class.) What is the value of the expression below if h = 9? 4h (h + 15) What role does the sun play in driving the water cycle in Antarctica what is 2/3(9+x)=-5(4-x) How much water would I need to add to a 175 mL of a 0.45 M KOH solution to make a 0.2 M solution? The models show the phases of a substance at various temperatures. Which model BEST communicates the kinetic energy and particle arrangement of a liquid? A. Model D, because it has high kinetic energy so the particles in the model have ionized B. Model B, because it has some kinetic energy and the particles have a free flowing shape C. Model C, because it has high kinetic energy so the particles in the model have no definite shape D. Model A, because it has some kinetic energy and the particles move freely What is the inverse operation needed to isolate the variable 4 = p - 8 On which day was there no work in the book animal farm Solve for x.4x - 6 = 30 QuestionYou want to draw a rectangle over the moon you added to your slide and then move it behind the moon. You want it to look like a frame. What ribbon tab would you click to find the tool to add the rectangle?AnimationsInsertDesignHome Under an installment contract, a buyer can:A. Reject an installment if the nonconformity substantially impairs the value of the installment without giving the seller an opportunity to cureB. Hold the seller in breach of the entire installment contract when a nonconforming installment substantially impairs the value of thatinstallment alone.C. Reject an installment no matter how minor the nonconformance isD. None of these answers Find the Surface Of a rectangular prism with base of 4m by 5m and height 8m. in prokaryotes certain proteins act to regulate genes by binding dna, what could be the effect of these binding proteins? In a major city is 7% find the total cost including the tax change on a purchase of $400 the total cost including sales tax is how much money