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dusya [7]
3 years ago
7

If your test increased by 14 points, what percent did you increase if there were 50 questions in total? show work

Mathematics
1 answer:
solmaris [256]3 years ago
8 0
Increase = 14
Total =50
Percentage increase = 14/50 x 100 = 28%
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Math help pls o; will reward
BabaBlast [244]

Answer:

see explanation

Step-by-step explanation:

Expressing as equations

9x + 10y = 297 → (1) ← that is B

8x + 5y = 194 → (2) ← that is D

To solve the system of equations, multiply (2) by - 2

- 16x - 10y = - 388 → (3)

Add (1) and (3) term by term to eliminate the term in y

(9x - 16x) + (10y - 10y) = (297 - 388), that is

- 7x = - 91 ( divide both sides by - 7 )

x = 13

Substitute x = 13 into either of the 2 equations and solve for y

Using (1), then

(9 × 13) + 10y = 297

117 + 10y = 297 ( subtract 117 from both sides )

10y = 280 ( divide both sides by 10 )

y = 28

Cost of a small box of candy = $13

Cost of a large box of candy = $28

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Phoenix [80]

Answer:

2.5

Step-by-step explanation:

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Nookie1986 [14]

Answer:

graph it

Step-by-step explanation:

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Find the inequality represented by the graph.
Korvikt [17]

Answer:

y>4x-2

Step-by-step explanation:

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The intercept is at -2, so the full equation would be

y=4x-2

However, we need to find the inequality of the graph. Everything greater than our line/above our line is included. Also notice that the line is dotted, which means that the line itself is not included.

Our equations should be,

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...........................
Korolek [52]

Answer: ....

Step-by-step explanation:

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