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3 years ago

A rectangle with a perimeter of 19m^2+2m-10 and a width of m^2 write an expression for the lenght

Mathematics

1 answer:

expeople1 [14]3 years ago

6 0

Answer:

$8.5m^{2}+ m -5$

Step-by-step explanation:

Since perimeter, $P=19m^{2}+ 2m -10$ and we know that P=2(l+w) then $P=2(l+m^{2})=2l+2m^{2}$

The length will be $2l=19m^{2}+ 2m -10-2m^{2}=17m^{2}+ 2m -10$

Now $l=8.5m^{2}+ m -5$

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Miss Kendrick plans to buy a laptop for $1345 in 12 weeks she has already saved $145 how much did she save each week so that she

enyata [817]

Answer: $100

Step-by-step explanation:

Total Amount needed by MISS KENDRICK = 'X' = $1345

Amount which is already saved by MISS KENDRICK = 'Y' = $145

Number of weeks for the purchase = 'Z' = 12

AMOUNT needed to be saved each week = $\frac{X-Y}{Z}$

By Substituting the values in the equation, we get

AMOUNT needed to be saved each week = $\frac{1345-145}{12}$

= $\frac{1200}{12}$

= $100.

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3 years ago

A store allows customers to fill their own bags of candy. Troy decides he only wants chocolate-covered pretzels and gumdrops. Ch

kobusy [5.1K]

Answer: He bought 0.5 pounds of chocolate-covered pretzels and 1.3 pounds of gumdrops.

Step-by-step explanation:

Let Troy bought x pounds of chocolate-covered pretzels and y pounds of gumdrops.

Since, the total pounds he bought = 1.8 pounds,

That is, x + y = 1.8 ------------(1)

Also, he total spent total 1.29 dollars in which Chocolate-covered pretzels sell for $0.89 per pound, and gumdrops sell for $0.65 per pound.

That is, 0.89 x + 0.65 y = 1.29 -----------(2),

0.89 x × Equation(1),

We get,

0.89 x + 0.89 y = 1.602 ------------(3)

Equation(2)-equation(3),

We get, 0.24 y = 0.312 ⇒ y = 1.3

By Substituting this value in equation (1),

x = 1.8 -1.3 ⇒ x = 0.5

Thus, he bought chocolate-covered pretzels, x = 0.5 pounds,

And, gumdrops, y = 1.3 pounds.

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3 years ago

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Kazeer [188]

Answer: z

Step-by-step explanation:

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3 years ago

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kondaur [170]

Answer:

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Step-by-step explanation:

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3 years ago

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A bakery uses 70% of its milk in one week. They now have 36 quarts of milk left. How many quarts did the bakery use during the w

Drupady [299]

Part 1)

Data:

70% milk used in a week

36 quarts of milk left

How many quarts used during the week?

Solution:

(Here we are supposed to find the milk USED, which is 70%, now we know that milk which is left is 36 quarts and it is obvious that the percentage of the milk left is 30% because 100% - 70% = 30%. )

You'll get your answer through the following equation:

(70% × 36 quarts) ÷ 30% = 84 quarts

Answer:

Therefore, the bakery used 84 quarts of milk during the week.

Part 2)

Data:

1 gallon = 4 quarts

Solution:

(Here, we're simply asked to convert the quarts of milk used during the week into gallons.)

If 1 gallon is 4 quarts, then:

84 quarts ÷ 4 = 21 gallons

Answer:

Therefore, the bakery used 21 gallons of milk during the week.

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3 years ago

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