MATHEMATICS MIDDLE SCHOOL

4 glue sticks cost $7.76

Which equation would help determine the cost of 13 glue sticks?

Answers

Answer 1
Answer:

Answer:

y=1.94x

13 glue sticks cost $25.22.

Step-by-step explanation:

4 blue sticks cost $7.76, this means that one glue stick costs

$7.76/4 = $1.94.

Let y be the cost of the glue sticks, and x be the number of glue sticks; then

\boxed{y=1.94x}

We can use this equation to find the cost of 13 glue sticks; we just put x=13\ into our equation and it gives:

y=1.94(13)=25.22

So 13 glue sticks cost $25.22.

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A new truck costs $32,000. The car’s value will depreciate over time, which means it will lose value. For tax purposes, depreciation is usually calculated linearly. If the truck is worth $24,500 after three years, write an explicit formula for the value of the car after n years.

Answers

Answer:

v = -2500*n + 32000

Step-by-step explanation:

Depreciation is usually calculated linearly, means that it follows the following equation (equation of a line):

v = a*n + b

where n is time after truck was new (in years), v is value of the truck (in $), and a and b are some constants.

A new truck costs $32,000, that is, when n = 0, v = 32000. Replacing into the equation:

32000 = a*0 + b

32000 = b

The truck is worth $24,500 after three years , that is, n = 3, v = 24500. Replacing into the equation:

24500 = a*3 + 32000

a*3 = 24500 - 32000

a = -7500/3 = -2500

32000 - (32000 * .2552n)

1 At a chicken farm, 396 eggs must be packed into crates each day. Each crate is packed with 18 eggs. Today, the farm staff has already packed 10 crates. how many more crates of eggs (c) still need to be packed today?

Answers

12 more crates need to be packed.

you estimate that a jar contains 68 marbles. The actual number of marbles is 60. Find the percent error.

Answers

ANSWER: 13.3...%

To find the percent of error, you must find the absolute value of the error, in this case 8 (68-60), and divide it by the actual amount.

8/60=0.133...

0.133... = 13.33...%

A cylindrical pitcher has a volume of 60 cubic inches. Andrea pours lemonade into conical glasses with a diameter of 3 inches and a height of 6 inches. How many glasses of lemonade can be filled by the pitcher?

Answers

Answer:

the answer is 4

Step-by-step explanation:

ok so first find the volume of a cone

the equation for that is 1/3π r²h

so filling in the blanks youd get 1/3π(1.5)²(6)

then I used 3.14 for pi but i got 14.13

then i divided 60 by 14.13 and got 4. something which i then got 4 because its asking for full cups

hope this helped someone!

Sarah started with 50 dollars in her bank account. Each month, she puts 25 more dollars in her account. The amount of money in dollars D in her account is given by D = 25m + 50 where m is the number of months she has added 25 dollars to her account.How much money will be in Sarah’s account after 8 months?

A.
$82

B.
$200

C.
$250

D.
$300

Answers


D=25m+50

D=(25)(8)+50

D=200+50

D=250

There will be $250 after 8 months.
The answer is C.$250

How many kilograms is a mass of a cat and show your work

Answers

1000 grams = 1 kilograms.....

the average mass of cat is 5000 grams, so if you convert this into KG then the answer would be 5 kg because if 1000*5 = 5000 which equals to 5 kg.....hope this helps :)
i think you need to know how much the cat weighs, there can be different answers for different weights but 2.2 pounds= 0.997903 kilograms
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