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3 years ago

Please answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!

Mathematics

1 answer:

Vitek1552 [10]3 years ago

8 0

First, we need to find the original ratio of 7th to 6th

6th = 12

7th = 21

21:12

Then find any common factors

21: 1,3,7,21

12: 1,2,3,4,6,12

divide 21 and 12 both by 3

21/ 3 = 7

12 / 3 = 4

7:4 is your ratio

For every 7 students in 7th grade, there are 4 students in 6th grade.

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Ray drove her car for 2 1/4 h and traveled 217.35 km. If she drives her car at the same speed for 3 hours, how many km will Ray

artcher [175]

2.25=2 1/4
217.35/2.25=x
X=96.6miles/ hour
96.6*3=
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The answer is that Ray traveled 289.8 miles in 3 hours.

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3 years ago

Read 2 more answers

A doctor has an annual income of $152,125. The income tax that doctor has to pay is 6%. What is the amount of income tax in doll

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Answer:

$9,127.50

Step-by-step explanation:

6% of $152,125 is ...

0.06 × $152,125 = $9,127.50

The doctor has to pay $9,127.50 in income tax.

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3 years ago

A forensic detective is called to the scene of a murder at 2 am. When she checks the temperature of the body, she sees that it i

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Newton's Law of cooling is
$T(t)=T_{a}+(T_{0}-T_{a})e^{-0.1947t}$
where
T(t) = temperature of the body after t hours, 80 °F
$T_{a}$ = ambient temperature, 65 °F
$T_{0}$ = normal body temperature, assumed to be 98.6 °F

The elapsed time since death is obtained from
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4.142 hours before 2 am is 9:52 pm (the previous day) approximately.

Answer: 9:52 pm the previous day.

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3 years ago

100 Points. Easy and fun question.

FinnZ [79.3K]

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Step-by-step explanation:

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4 years ago

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The rate of change of the height is $\frac{1}{9}$ in/min.

<h3>What is a right circular cylinder?</h3>

A right circular cylinder is a cylinder that has a closed circular surface having two parallel bases on both the ends and whose elements are perpendicular to its base. It is also called a right cylinder.

Volume of the cylinder = $\pi r^{2}h$