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VMariaS [17]
3 years ago
15

Calculate the areas of these rectangles

Mathematics
1 answer:
kykrilka [37]3 years ago
8 0
  • <em>Answer:</em>

<em>A(a) = 24 cm²</em>

<em>A(b) = 40.04 cm² ≈ 40 cm²</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em>area formula (rectangle)</em>

<em>A = l × w</em>

<em>A(a) = 8cm × 3cm = 24 cm</em>

<em>A(b) = 5.2cm × 7.7cm = 40.04 cm² ≈ 40 cm²</em>

<em>Good luck !</em>

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Twice the sum of a number and three is 88.
Xelga [282]

Answer:

x=41

Step-by-step explanation:

2(x+3) = 88  

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- 6        - 6

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Emily spent $55 from her savings on a new dress. explain how to descibe the change Emily's savings balance in 2 different ways
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3 0
3 years ago
Carol has some dimes and quarters. If she has 31 coins worth a total of $4.30, how many of each type of coin does she have?
sasho [114]

Answer:

23 Dimes and 8 Quarter.

Step-by-step explanation:

Important info:

31 Coins worth a total of $4.30

Note:

Dimes = .10

Quarters = .25

10 Dimes = 1.00

4 Quarter = 1.00

Question to Answer:

How many of each type of coin does she have?

Solution:

Lets get rid of the .30 cent in $4.30 so

.30 = 3 Dimes

Now $4.00,

4.00-1.00 of quarter

=

3.00 and 4 quarter..

Right now we have 3 Dimes and 4 Quarter = $1.30.

And that 7 Coins worth of $1.30.

3.00-2.00= 1.00 and 20 Dimes so now we have

23 Dimes and 4 Quarter.

And that add up to 27.

1.00-1.00 of Quarter = 4 Quarter.

so 31 worth a total of $4.30.

So that's 23 Dimes and 8 Quarter.

Check Work:

23 Dimes = $2.30 and 8 Quarter = $2.00

$2.30 + $2.00 = 4.30

Hence, The Correct Answer is 23 Dimes and 8 Quarter.

~[ RevyBreeze }~

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3 years ago
4. (x+ 2)(2x2 + 9x+8)
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Answer:

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6 0
3 years ago
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