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3 years ago

Solve for y. 7y - 14 = 35

Mathematics

2 answers:

Radda [10]3 years ago

8 0

Answer:

it's 7

Step-by-step explanation:

this needs to be 20 characters long

Andreyy893 years ago

5 0

Answer:

switch the -14 to positive and the add 35+14 and then divide the number you get by 7

Step-by-step explanation:

y=7

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. Three out of four students in school have at least one sibling. If there are 300 students in your school, how many would have

tekilochka [14]

Answer: 225 students would have at least one sibling.

Step-by-step explanation:

Three out of four is the same as 3/4 meaning that if there are 300 students in your school then 3/4 times 300 will give the number of students with at least one sibling.

3/4 * 300 = 225

This means 225 students would have at least one sibling.

3 0

3 years ago

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A certain forest covers an area of 4600km. Suppose that each year this area decreases by 7.75%. What will the area be after 13 y

wolverine [178]

Answer:

$1679.60\ km^2$

Step-by-step explanation:

-We can use the exponential decay function to estimate the size after 13 years:

$P_t=P_oe^{-rt}$

Where:

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#We substitute and calculate as:

$P_t=P_oe^{-rt}\\\\=4600e^{-13\times 0.0775}\\\\=1679.60$

Hence, the forest covers $1679.60\ km^2$ after 13 years.

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3 years ago

3. The scale of a model car is 1:32.

Jlenok [28]

Answer: The answer would be 73.6

Step-by-step explanation: We have to 32x2.3 to get 73.6.

Hope this helps!

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3 years ago

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a ribbion is 3 2/3 yards long. Mae needs to cut the ribbion into pieces that are 2/3 yard long.how much ribbion will be left aft

Lemur [1.5K]

To answer this question you need to divide to get the number of pieces and then multiply whats leff by 3 2/3.

Divide 3 2/3 by 2/3. There are a few ways to do this but I am going to turn 3 2/3 into an improper fraction and then divide.

So $3\frac{2}{3} = \frac{11}{3}$
Now divide
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We can see she can get 5.5 pieces at 2/3. So .5 is going to be left over so we ask our self, what is .5 of 3 2/3? We times .5 by 3 2/3 = 1.83 yards left. If you want it into a fraction, it would be $1\frac{83}{100}$ yards left

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3 years ago

Find the missing length

antoniya [11.8K]

117 (if you put the answer in the green box)

9^2 = 81 , 6^2=36
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Otherwise 10.82 if this is to the nearest hundredth

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2 years ago