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serious [3.7K]
2 years ago
9

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is

the number of 3-point questions and y is the number of 5-point questions, the system shown represents this situation.
x + y = 24

3x + 5y = 100

What does the solution of this system indicate about the questions on the test?

The test contains 4 three-point questions and 20 five-point questions.
The test contains 10 three-point questions and 14 five-point questions.
The test contains 14 three-point questions and 10 five-point questions.
The test contains 20 three-point questions and 8 five-point questions.
Mathematics
1 answer:
aniked [119]2 years ago
7 0

Answer:

10 three-point questions and 14 five-point questions.

Step-by-step explanation:

x+y = 24

3x+5y = 100

We can solve this system of equations using elimination. In order to do this, let's first multiply the first equation by 3...

3x+3y=72

3x+5y=100

Now, subtract the first equation from the second equation...

2y=28

Divide both sides by 2

y=14

Plug this back into any of the equations to solve for x...

x+14=24

x=10

There were 10 three-point questions and 14 five-point questions

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I have four factors three of my factors are 12 and 10 what is my fourth factor.
lord [1]
The factor is probobly 8.

4 0
3 years ago
6-(1/3×1/3)+1×8 what is the answer? How to get it??????????​
egoroff_w [7]
6-(1/9)+1x8
=6-(1/9)+8
=6/1-1/9+8/1 (change 6 and 8 to fractions)
=6/9-1/9+8/1
=54/9-1/9+8/1
=53/9+8/1
=53/9+8/9
=53/9+72/9
=125/9
5 0
3 years ago
Solve the following for y: 9x − 3y = 18 (5 points) y = 3x + 6 y = 3x − 6 y = −3x − 6 y = −3x + 6
choli [55]

Answer:

y = 3x - 6

Step-by-step explanation:

given 9x - 3y = 18

isolate - 3y by subtracting 9x from both sides of the equation

- 3y = 18 - 9x ( divide all terms by - 3 )

y = \frac{18}{-3} - \frac{9x}{-3}

  = - 6 + 3x = 3x - 6


6 0
3 years ago
Ms.blox bought 6 pounds of hamburger at 1.88 per pound be and a bag of potatoes for 1.35. how much did she spent in all
svetoff [14.1K]

Answer: $12.63

Step-by-step explanation:

1.88*6= 11.28

11.28+1.35= 12.63

5 0
3 years ago
Can someone help with this please?
MA_775_DIABLO [31]

Answer:

y-intercept → (-5)

Slope → 4

Equation → y = 4x - 5

Step-by-step explanation:

From the table attached,

y - intercept → Output value at x = 0

y = -5

Slope = \frac{y_2-y_1}{x_2-x_1}

          = \frac{-13-(-9)}{-2-(-1)}

          = \frac{-13+9}{-2+1}

          = \frac{-4}{-1}

          = 4

m = 4

Equation of a line is given by,

y = mx + b

Here, m = Slope

b = y-intercept

Therefore, equation of the line will be,

y = 4x + (-5)

y = 4x - 5

4 0
3 years ago
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