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Monica [59]
3 years ago
14

Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution? y = -x + 21 y = -2

x + 30 A. (8, 12) B. (9, 11) C. (9, 12) D. (8, 11)
Mathematics
2 answers:
irga5000 [103]3 years ago
8 0
C)9,12 that is  the correct answer 

insens350 [35]3 years ago
6 0
C is the answer !!!!!!!
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A quantity, y, varies directly as x When y=10, x=6.<br> Find xwhen y= 14.
grigory [225]

The value of x when y = 14 is 8.4

<h3 />

<h3>How to solve variation ?</h3>

y, varies directly as x. Therefore,

y ∝ x

Therefore,

y = kx

where

  • k =constant of proportionality

Therefore,

10 = 6k

k = 10 / 6

k = 5 / 3

Hence, when y = 14

y = kx

14 = 5 / 3 x

cross multiply

42 = 5x

x = 42 / 5

x = 8.4

learn more on variation here: brainly.com/question/20707320

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7 0
2 years ago
What value of t makes (-2) +(-11) = t a true sentence?
Bas_tet [7]

Answer:

t = -13

Step-by-step explanation:

Given expression:

  • (-2) +(-11) = t

Solving for t:

  • -13 = t
  • t = -13
8 0
3 years ago
A textbook store sold a combined total of 477 sociology and math textbooks in a week. The number of sociology textbois sold was
denpristay [2]

Answer:

The correct answer is 218 math textbooks and 259 sociology textbooks.

Step-by-step explanation:

To solve this problem, we can make a system of equations. Let the number of sociology textbooks sold be represented by the variable "s" and the number of math textbooks sold be represented by the variable "m". Using these variables, we can make two equations:

s + m = 477

m + 41 = s

There are many ways to solve this system of equations. One approach we can take is substituting the value for s given by the second equation into the first equation. This is modeled below.

s + m = 477

(m + 41) + m = 477

Combining like terms on the left side of the equation yields:

2m + 41 = 477

Subtracting 41 from both sides of the equation gives us:

2m = 436

Finally, dividing both sides of the equation by 2 gives us:

m = 218

To solve for the number of sociology textbooks, we can substitute into either of our original equations.

m + 41 = s

(218) + 41 = s

s = 259

Therefore, your answer is m = 218 and s = 259, or 218 math textbooks and 259 sociology textbooks were sold.

Hope this helps!

6 0
3 years ago
Describe different ways that you can show a story problem?
sattari [20]
I can make inferences to the text or article..
6 0
3 years ago
PLS HELP PLS HELP PLSSSS
serious [3.7K]

Answer:

find the bottom angle of the triangle on the right side.

180 - 92 = 88

Now find x

88+36 = 124

180-124 = <u>56 = x</u>

<u />

Hope that answers your question

Don't hesitate to comment if you are confused about something

Step-by-step explanation:

6 0
2 years ago
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