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zhannawk [14.2K]
3 years ago
12

What's a proportion that can be used to find out how many points a student needs to reach 78 percent on a 50 point quiz?

Mathematics
1 answer:
Katarina [22]3 years ago
7 0
Hope this helps
vote me brainliest

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Write two numbers that multiply to the value on top and add to the value on bottom.<br> 27<br> -12
mariarad [96]
Multiply 3x9 and it gives u 27
And -3 plus -9 equal -12
4 0
3 years ago
Read 2 more answers
Which statement about the function is true?
krok68 [10]

Answer:

The function is negative for all real values of x where -6< x < -2

Step-by-step explanation:

Given f(x) = (x + 2)(x + 6)

The graph of the function is as shown in the attached figure.

As shown, we can deduce the following:

The function is positive for all real values of x where x > -2 and x < -6

The function is zero at x = -2 and x = -6

The function is negative for all real values of x where -6 < x <-2

Compare the observations to the given statements:

So, The true statement is The function is negative for all real values of x where -6 < x <-2

7 0
3 years ago
Need help with this one also
andriy [413]

Answer:

scale factor 3 is the answer.

Step-by-step explanation:

Length = 18 in

Breadth = 3 in

height = 10 in

Volume of cuboid = l × b × h

V = 18 × 3 × 10

V = 540 in³

540 in³ is the original volume. The volume needs to be tripled, so multiply the original volume with 3

V = 540 × 3 = 1620 in³

∴ 1620 in³ will be the new volume if it's tripled and the scale factor is 3.

4 0
3 years ago
Can you help <br> please and thank you
seraphim [82]

Answer:

C

Step-by-step explanation:

Total of 40 cups and 25 of them are chocolate so the proportion for chocolate would be 25/40

7 0
2 years ago
Read 2 more answers
The percent of working students increased 21.7% to 8.9%, what was the percent prior to increase​
blagie [28]

Answer:

Approximately 7.3%.

Step-by-step explanation:

What is percentage increase?

\displaystyle \text{Percentage Increase} = \frac{\text{Final Value} - \text{Initial Value}}{\text{Initial Value}} \times 100\%.

For this question:

  • \text{Percentage Increase} = 21.7\%,
  • \text{Final Value} = 8.9\% = 0.089, and
  • \text{Initial Value} needs to be found.

Let \text{Initial Value} = x.

\displaystyle \frac{0.089 - x}{x} = 0.217.

Assume that x \ne 0. Multiply both sides of the equation by x:

0.089 - x = 0.217x.

Add x to both sides of the equation:

0.089 = (1 + 0.217)x.

\displaystyle x = \frac{0.089}{1 + 0.217} = 0.0731 \approx 7.3\%.

In other words, the initial percentage is approximately 7.3%.

4 0
3 years ago
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