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4 years ago

Consider that the length of rectangle A is 21 cm and its width is 7 cm. Which rectangle is similar to rectangle A?

Mathematics

2 answers:

iris [78.8K]4 years ago

6 0

Answer:

A) A rectangle with a length of 9 cm and a width of 3 cm.

I just took the test I promise it'll be correct.

Step-by-step explanation:

AVprozaik [17]4 years ago

3 0

Answer:

Any rectangle with a ratio of 3:1

21/7=3/1, which option also equals 3/1?

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Solve this equation(15x^3- 2)^3= 2197

aliya0001 [1]

Answer:

x=1

Step-by-step explanation:

(15x^3- 2)^3= 2197

Take the cube root of each side

(15x^3- 2)^3 ^ 1/3= 2197^ 1/3

15x -2 = 13

Add 2 to each side

15x^3- 2+2= 13+2

15x^3 =15

Divide each side by 15

15x^3 /15 =15/15

x^3 =1

Take the cube root of each side

x^3 ^1/3 = 1^1/3

x=1

5 0

3 years ago

According to the article "Fatigue Testing of Condoms" (Polymer Testing, 2009: 567–571), "tests currently used for condoms are su

daser333 [38]

Answer:

99% Confidence interval: (1196,1973)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 20

Mean, μ = 1584

Standard Deviation, σ = 607

99% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.01} = \pm 2.86$

$1584 \pm 2.86(\dfrac{607}{\sqrt{20}} )\\\\ = 1584 \pm 388.18\\ = (1195.82 ,1972.18)\\ \approx (1196,1973)$

Thus, there is a 99% chance that it will break in approximately 1196 to 1972

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3 years ago

What is 1 whole divided by 5/12

liraira [26]

Step-by-step explanation:

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Neporo4naja [7]

Answer:

Option C

Step-by-step explanation:

the linear equation y = 2x+10 matches with option c

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3 years ago

Rachelle can walk 2.5 miles in 40 minutes. At this rate, how far can she walk in 1 hour?

Marina CMI [18]

Answer:

Rachelle can walk 3.75 miles in am hour.

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4 years ago

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