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MAXImum [283]
3 years ago
7

Barbara answered 72 questions correctly on her test. If her score on the test was 80%, how many questions were on the test?

Mathematics
2 answers:
Pani-rosa [81]3 years ago
5 0
Answer is B - 90
-----
elena55 [62]3 years ago
5 0
For a percentage question setup is like this:
part = percentage * whole

part = 72
percentage = 80% = 0.8

72 = 0.8 * whole
whole = 72/0.8 = 90
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How would I solve this equation?
sergiy2304 [10]

Let's solve your equation step-by-step.<span><span><span>
2/3</span><span>(<span><span>3x</span>+1</span>)</span></span>=5</span>
Step 1: Simplify both sides of the equation.<span><span><span>
2/3</span><span>(<span><span>3x</span>+1</span>)</span></span>=5</span><span>
Simplify: (Show steps)</span><span><span><span>
2x</span>+<span>2/3</span></span>=5</span>
Step 2: Subtract 2/3 from both sides.<span><span><span><span>
2x</span>+<span>2/3</span></span>−<span>2/3</span></span>=<span>5−<span>2/3</span></span></span><span><span>
2x</span>=<span>13/3</span></span>
Step 3: Divide both sides by 2.<span><span><span>
2x/</span>2</span>=<span><span>13/3/</span>2</span></span><span>
x=<span>13/6</span></span>
Answer:<span>
x=<span>13/<span>6</span></span></span>
8 0
3 years ago
Read 2 more answers
Find the missing angle.<br> Enter the number that belongs in the green box.<br> Enter
Ivenika [448]

Answer:

35 degrees

Step-by-step explanation:

The sum of all angles in a triangle equals to 180

To find angle z, just subtract 55 and 90 from 180

180-55-90= 35

Angle z = 35 degrees

Hope this helps

8 0
3 years ago
PLEASE HELP ANSWER FAST I WILL GIVE BRAINLIEST!!!!!
bija089 [108]

Answer:

Take the number of weeks as x

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x =444/12

x = 37

Thus it would take her 37 weeks to buy her a laptop

6 0
3 years ago
Read 2 more answers
I’m actually confused.
-BARSIC- [3]
M^2 + n^2

Step 1:
Substitute in the numbers
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Step 2:
Square both numbers
25 + 9

Step 3:
Add them together

Answer is 34
8 0
3 years ago
A student writes the equation for a line that gas a slope of -6 and passes through the point (2,-8).
GREYUIT [131]
On the third step it adds 8 on both sides. You are suppose to subtract 8 on both sides.
5 0
3 years ago
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