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2 years ago

Tom got 15 questions right on a test and scored 75%. How many questions were there total on Tom's test?

Mathematics

2 answers:

OverLord2011 [107]2 years ago

4 0

Answer: 20 questions

Step-by-step explanation:

Pani-rosa [81]2 years ago

4 0

Answer:

15/x*100=75

75/100*15=x

x=20

total no. of questions

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A car speed up from 10 mph to 50 mph over a time<br> period of 10 seconds What is the acceleration?

liq [111]

Answer:

40 mph

Step-by-step explanation:

the acceleration is 40 mph

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3 years ago

The odometer of the family car shows 15,951 miles. The driver noticed that this number is palindromic: it reads the same backwar

ludmilkaskok [199]

The next palindromic number is 16061, so he traveled 110 miles. 110 miles/2 hours = 55 mph.

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3 years ago

Match each number in scientific notation with the number written in standard form and in a step by step process.

geniusboy [140]

Answer:

1) Option 3

2) Option 1

3) Option 2

Step-by-step explanation:

To find : Match each number in scientific notation with the number written in standard form and in a step by step process.

Solution :

From scientific to standard we expand the power of 10.

1) $6.82\times 10^7$

Remove decimal and open the power,

$6.82\times 10^7=\frac{682}{100}\times 10000000$

$6.82\times 10^7=68200000$

Therefore, $6.82\times 10^7=68,200,000$

Match with Option 3.

2) $6.82\times 10^{-6}$

Remove decimal and open the power,

$6.82\times 10^{-6}=\frac{682}{100}\times \frac{1}{1000000}$

$6.82\times 10^{-6}=\frac{682}{100000000}$

Therefore, $6.82\times 10^{-6}=0.00000682$

Match with Option 1.

3) $6.82\times 10^6$

Remove decimal and open the power,

$6.82\times 10^6=\frac{682}{100}\times 1000000$

$6.82\times 10^6=6820000$

Therefore, $6.82\times 10^6=6,820,000$

Match with Option 2.

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3 years ago

Henry is making a recipe for biscuits. A recipe calls for 5/10 kilogram flour and 9/100 kilogram sugar.how much sugar and flour

Nonamiya [84]

So first find a common denominator which is 100 in this question. Then change 5/10 into a denominator of 100 which is 50/100 you don't have to change 9/100 because it has a denominator of 100. So then add the fractions and the answer is 59/100

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3 years ago

Write n^4 • n^3 without exponents

Elis [28]

Answer:

n*n*n*n*n*n*n

Step-by-step explanation:

n^4 * n^3 = n^7 = n*n*n*n*n*n*n

8 0

3 years ago