3 years ago

PLEASE I WILL GIVE BRAINLIEST!

Mathematics

1 answer:

Darya [45]3 years ago

4 0

Answer:

7 + x + 4y

(7 + x) + 4y

x + (7 + 4y)

Step-by-step explanation:

the sum of elements does not change, no matter the order.

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Estimate a 15% tip on a dinner bill of $49.76 by first rounding the bill amount to the nearest ten dollars

TiliK225 [7]

Answer:

$7.50

Step-by-step explanation:

Round $49.76 to nearest ten dollars =$50.00

15%of $50.00

15/100*50

750/100

$7.50

6 0

3 years ago

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A tank sprung a leak in the water level started drop from 24.8 m at a rate of 2 m/h. Right and solve an equation to determine ho

malfutka [58]

Answer:

8 hours.

Step-by-step explanation:

The initial water level is 24.8 meters, and the rate of water level drop is 2 meters/ hour, that means after $t$ hours the water level $L$ will be

$L =24.8-2t$

Now we want water level to be 8.8 meters, I.e $L=8.8m$ , therefore, we have:

$L=8.8=24.8-2t$

we solve the equation for $t$ :

$8.8=24.8-2t\\8.8+2t=24.8\\2t=24.8-8.8\\2t=16\\\\\boxed{t=8}$

it will take 8 hours for the water level to drop to 8.8 meters.

3 0

3 years ago

What is the y-value when x equals 7?<br> y = 310 - 25(x)

monitta

Answer:

y=135

Step-by-step explanation:

To find the solution, we must put 7 in for x and solve, as shown:

$y=310-(25)(7)\\y=310-175\\y=135$

6 0

3 years ago

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I want a correct answer you can take your time. If I was born on December 24, two thousand and four ( 24 / 12 / 2004 ) and my cl

Elden [556K]

Answer:

8 months 11 days 1 year

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3 years ago

For five mathematics tests, your scores were 81, 86, 81, 76, 71. what was your average score?

trasher [3.6K]

add them together then divide by 5

81 +86 +81 +76 +71 = 395

395/5 = 79

your average was 79

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3 years ago