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den301095 [7]
3 years ago
8

3/8 of the seventh grade students were taking advanced math at the beginning of the year, but seven dropped out by the end of th

e year. if there were 149 students taking advanced math at the end of the year, how many total 7th grade students are there?
Mathematics
1 answer:
lara [203]3 years ago
3 0

Answer:

416 I believe.

Step-by-step explanation:

add 7 to 149

divide 156 by 3 to get 1/8 of total.

Get 52 and then multiply by 8 to get 416

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Water is added or drained from a tank each day. The first day, 910 of a gallon is added to the empty tank. The second day, 710 o
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Answer:

The quantity of water in the tank after 15 days is 1610.0 gallons OR 1.61 × 10³ gallons.

Step-by-step explanation:

The amount of water in the tank after 15 days is given by the series

910+(−710)+810+(−610)+⋯+310+(−110)+210

From the series, we can observe that, if water is added for a particular day then water will be drained the following day.

Also, for a day when water is to be added, the quantity to be added will be 100 gallon lesser than the quantity that was last added. Likewise, for a day when water is to be drained, the quantity to be drained will be 100 gallons lesser than the quantity that was last drained.

Hence, we can complete the series thus:

910+(−710)+810+(−610)+710(-510)+610(-410)+510(-310)+410(-210)+310+(−110)+210

To evaluate this, we  get

910-710+810-610+710-510+610-410+510-310+410-210+310-110+210

= 1610.0 gallons

Hence, the quantity of water in the tank after 15 days is 1610 gallons OR 1.61 × 10³ gallons.

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3 years ago
Janey's height from age 7 to 12 can be modeled by the function h(t)=45+8/5t, where h(t) is Janey's height in inches and t is tim
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Write the ratio as a fraction in the fourth column of the table.

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John bought a new home in 2002. The value of the home increases 4% each year. If the price of the house is $375,000 in 2020, how
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Hope this helps! :)
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How would the graph of the relation y=3x-2 change if the 3 and -2 were both doubled? 
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<u>y = 3x - 2</u>

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Choice <u>(a)</u> says that . . . "... steeper, and lower y-intercept".

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