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Lemur [1.5K]
3 years ago
12

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:
Brilliant_brown [7]3 years ago
6 0
The solution to the system of equations is (x, y) = (10, 14), where x is the number of 3-point questions and y is the number of 5-point questions. The appropriate choice is ...
  The test contains 10 three-point questions and 14 five-point questions. (2nd selection)

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25 points!!!!!!!!!!!!!!!!!!!!!
alexandr1967 [171]

Answer:

line graph for sure ig..........

4 0
3 years ago
Read 2 more answers
How much heavier is a 9 1/8 pound box than a 2 5/6 pound box?
tatuchka [14]
<span>So let’s simplify the given situation.
We need to find out how much heavier is 91/8 lbs. compare to 2 5/6 lbs.
Since, it’s a combination of whole number and fraction; we cannot directly subtract this given equation. We need to convert the two given number into a fraction.
9 1/8 = 8 x 9 = 72 + 1 = 73, 73 is our numerator and 8 is our denominator
=> 73/8
2 5/6 = 6 x 2 = 12 + 5 = 17, 17 is our numerator and 6 is our denominator
=> 17/6

Now, we have 2 fractions with unlike denominator. In order to get a common denominator, we have to find their least common factor.

=> <u>73</u> - <u>17  </u> = <u>73 x 6 </u> - <u>17 x 8 </u> <u>
</u>       8      6        8 x 6       6 x 8</span><span>
=> <u>438</u> – <u>136 </u> Now, we have the same denominator, subtract</span><span>
      48       48
=> <u>302 </u> or  <u>151</u>
       48          24
=> 6 <u>7</u>
       24
Therefore 9 1/8 lbs. is 6 7/24 lbs. heavier than 2 5/6 lbs.</span>



4 0
3 years ago
The first painter can finish a paint job in 2 hours. The second painter can finish the same job in 8 hours. How long would it ta
vampirchik [111]

Answer: 1\frac{3}{5} hrs

<u>Step-by-step explanation:</u>

1st painter:  \frac{1}{2}

2nd painter: \frac{1}{8}

1st + 2nd = Together

\frac{1}{2} + \frac{1}{8} = \frac{1}{x}

\frac{1}{2}(8x) + \frac{1}{8}(8x) = \frac{1}{x}(8x)

4x + x = 8

5x = 8

 x = \frac{8}{5}

    = 1\frac{3}{5}

8 0
3 years ago
A pair of parallel lines is cut by a transversal as shown in the figure. Match the angles with their corresponding angles.
garri49 [273]
D and H are corresponding
G and C are corresponding
E and A are corresponding
B and F are corresponding
4 0
3 years ago
Read 2 more answers
Katrina wants to estimate the proportion of adults who read at least 10 books last year. to do​ so, she obtains a simple random
Vaselesa [24]
E=Z*sqrt (p(1-p)/N), where E= error margin, p=proportion, N=sample size

Katrina's margin error at 85% confidence interval: E=1.96*sqrt (p(1-p)/100) = 0.196 sqrt (1(1-p))

Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))

Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.
3 0
3 years ago
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