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KatRina [158]
3 years ago
12

How to solve whole question

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
6 0
Sorry I don’t kno …………
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Tony took a math quiz last week. There were 80 problems on the quiz and Tony answered 70% of them correctly. How many problems d
Nutka1998 [239]

Answer:

56 problems

Step-by-step explanation:

So we already know that the answer is: 56. However, a good help is knowing how to obtain this answer from the data provided.

Tony's quiz had 80 questions

Tony correctly answered 70% of them.

We can always write a percentage amount as a ratio by dividing the amount by 100.

70\% = \frac{70}{100} = 0.7.

This means that for every 100 questions, tony will respond correctly 70.

So, if Toni did a questionnaire of n questions, the amount that will answer correctly is calculated by the following expression:

C = n*\frac{70}{100}

If n = 80 then:

C = 80 * \frac{70}{100}\\\\C = 56

7 0
3 years ago
Read 2 more answers
please help. i’ll give thanks and mark brainlist. have posted multiple times but no one can help:( it’s geometry!
Nastasia [14]
I’m not positive but the answer might be 240.34
3 0
3 years ago
If I Row my canoe at 5 mph and I travel upstream at 3 mph, how fast will I be traveling downstream if I am rowing at the same ra
Assoli18 [71]
Is the same as the one you just did.

keep in mind that, going against the current, the current's speed erodes speed from your regular speed, whilst if you're going with the current, the current's speed adds to it.

now, in this case, you row 5mph, going upstream you're only doing 3mph, whatever happened to the other 2mph?  well, the current speed eroded them, meaning the speed of the river is 2mph.

now, going downstream with the current, your regular speed is 5mph, and the current is 2mph, since the current adds to yours, then you're going 5 + 2, mph.
5 0
3 years ago
A cable installer charges 42.50 per hour plus a 60.00 service charge , find the total charges of it takes the cable installer 3.
yan [13]
Multiply 42.50 by 3.5 then add 60.00 to your answer
5 0
3 years ago
What is the equation of a line that has a slope of −12 and a y-intercept of 3? Express your answer in slope-intercept form.
Elena L [17]

If given the slope and y-intercept, you can directly get the slope intercept form as

y = -12x + 3

6 0
4 years ago
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