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lidiya [134]
3 years ago
7

Janelle got 19 problems out of 25 correct on her quiz. To find her quiz grade, she can divide the number she got correct out of

the total number of problems, then multiply by 100. What is her quiz grade?
Mathematics
2 answers:
Alexeev081 [22]3 years ago
5 0

Answer:

I think the answer is 131 I'm not really sure I have no brain.

Step-by-step explanation:

kompoz [17]3 years ago
3 0

Answer:

76%

Step-by-step explanation:

\frac{19}{25} × 100% = 76%

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What is half of the product of 8 1/7 and 7 4/5
UNO [17]

First we must convert these mixed numbers to improper fractions:

8\frac{1}{7}=\frac{57}{7}

7\frac{4}{5}=\frac{39}{5}

So then we need the product of these two numbers. That means to multiply:

\frac{57}{7}* \frac{39}{5}= \frac{2,223}{35}

But then we need the value of half of this product. So then let's multiply by one-half:

\frac{2,223}{35} *\frac{1}{2} =\frac{2,223}{70}

Then we can convert this from an improper fraction to a mixed number:

\frac{2,223}{70} =31\frac{53}{70}

And so this number is half of the product of the initial two numbers.

6 0
3 years ago
A 20,000 gallon tank is 3/4full. If the drain valve on this tank allows 2.5 gallons of water to be drained per minute, about how
patriot [66]

Answer:

100 Hours

Step-by-step explanation:

since the tank has 15,000 gallons of water. it drains at a rate of 150 gallons per hour so 15,000 divided by 150 equals 100

6 0
3 years ago
the book fair had a sale where 6 book were $20.46 if you wanted to buy 7 books ,how much money would you need ?
Rina8888 [55]

Answer:

$23.87

Step-by-step explanation:

Start by finding out how much one book costs-

$20.46/6=3.41

Then find out how much seven books cost- 3.41 (7)=$23.87

4 0
2 years ago
Read 2 more answers
Running out of time! Please help and show work! Thank you! Will mark brainliest!
VikaD [51]
<h3>​(-3j²k³)²(2j²k)³</h3>

(-3j²k³)²(2j²k)³ = <em>When a power is raised to a power the exponents have to be multiplied.​</em>

​= (-3²j⁽²*²⁾k⁽³*²⁾)(2³j⁽²*³⁾k³) = <em>We can take out the constants</em>

​= (9)(8)(j⁴k⁶)(j⁶k³) = <em>We can group the same variables</em>

= 72(j⁴j⁶)(k⁶k³) = <em>When multiplying two powers that have the same base, you have to add the exponents.​</em>

= 72 j⁽⁴⁺⁶⁾k⁽⁶⁺³⁾ = 72j¹⁰k⁹​

​Answer = 72j¹⁰k⁹

​Hope this helps!​​​​

​​\textit{\textbf{Spymore}}​​​​​​

5 0
3 years ago
How much Work is used when 25N of force is done over 100m?​
murzikaleks [220]

Step-by-step explanation:

we know that

Work =f*d

=25*100

=2500Joule

therefore work done is 2500Joule

4 0
2 years ago
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