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Marysya12 [62]
3 years ago
11

Widths of two similar rectangles are 21ft and 18ft. What is the ratio of the perimeter? Of the areas?

Mathematics
1 answer:
ad-work [718]3 years ago
6 0
Ratio of perimeters is a : b:

21:18

Which reduces to: 7:6

Ratio of areas is a^2 : b^2:

"7 ^2: 6^2"

Which simplifies to: 49:16


The answer is 7:6 and 49:36
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I'm confused. Help. Find x please.
miss Akunina [59]

Answer:

x = 2 and x = 10

Step-by-step explanation:

(x+3)^2 = (x - 5)^2 + (x + 2)^2

x^2 + 6x + 9 = x^2 - 10x + 25 + x^2 + 4x + 4

x^2 + 6x + 9 =2x^2 - 6x + 29

x^2 - 12x + 20 = 0

(x - 10)(x - 2) = 0

x - 10 = 0; x = 10

x - 2 = 0; x = 2


4 0
3 years ago
What is another name for irrational number?
maria [59]

Answer:

D

Step-by-step explanation:

Irrational numbers are reasonable and also real.

Surd is an example of an irrational numbers.

So as another name may be I go with option D

7 0
4 years ago
Identify the steps needed to evaluate the expression below.<br><br> 8×1+(8+9)−38÷2×5
lbvjy [14]
First calculate the sum or difference: 8+(8+9)-19 x 5.
Second calculate the product or quotient: 8+17-19 x 5
Third calculate the sum: 8+17-95
Lastly subtract 25 - 95.


Then your answer is -70. Please give brainliest!
4 0
3 years ago
Rajan had 30 dollars to spend on 3 gifts. He spent 9 1 4 dollars on gift A and 5 4 5 dollars on gift B. How much money did he ha
Lyrx [107]

Answer:

$15 1/10

Step-by-step explanation:

Given that :

Total amount to spend = $30

Amount spent on Gift A = $9 1/4

Amount spent on Gift B = $5 4/5

Amount left to spend on gift C ;

$30 - (9 1/4 + 5 4/5)

$30 - (37/4 + 29/5)

$30 - (185 + 116)/20

$30 - 298/20

30/1 - 298/20

$(600 - 298) / 20

$302/20

$15 2/20

= $15 1/10

3 0
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OLga [1]

Answer:

2

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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