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3 years ago

Can someone help me on this problem please? I'm not sure how to figure it out. Thank you! :P

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

8 0

I would say yes, the rectangles are similar!
Both of the rectangles have a scale factor of 2.5
If you divide 10 and 4 (the smaller sides of the rectangle) you will see that the larger rectangle is 2.5x bigger than the smaller one!
Same with the longer side. 20 divided by 8 is 2.5:)

Dafna11 [192]3 years ago

6 0

Answer:

They are not similar because the shape and their numbers.

Step-by-step explanation:

Pls brainliest :/

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Which values are solutions of the inequality 5 < y -8<br><br>8 , 9. , 13. , 15. , 20

Sladkaya [172]

Answer:

5 is greater than y-8 since 5 is positive it + in the begging +5 while - 8 is less than 0 because it has - in the begging

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How to write a number sentence equal and3

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What? Can you be more specific? I'm very confused about what you want

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3 years ago

A savings account earns 5% simple interest per year. The principal is $1200. What is the balance after 4 years?

stiv31 [10]

The formula of the Simple Interest is:
I=PRT
P for Principle Amount ($1200)
R for Rate (5%= $\frac{5}{100}$ = 0.05)
T for Time in years (4 years)
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3 years ago

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If csc ( x ) = 4, for 90 ∘ < x < 180, then sin ( x 2 ) = ? cos ( x 2 ) = ? tan ( x 2 ) = ?

svetlana [45]

Answer:

I'm assuming where you wrote x2, you meant 2x.

Anyway, if csc (x) = 2, since csc(x) = 1/sin(x), we know that 1/sin x = 2, so sin (x) = 1/2. Since sin2x + cos2x = 1, cos2x = 1 - sin2x, so cos x = √1 - sin2x. In this case, cos x = √ 1 - (1/2)2 = √(3/4) = (√3)/2. Finally, since sin x = opp / hyp , cos = adj/ hyp: sin x / cos x = (opp/hyp)/(adj/hyp) = opp/adj = tan x. So this means that tan x = sin x / cos x = 1/2 / √ 3 / 2 = 1/√3 = √3 / 3

At this point, all that is necessary is to use the double angle formulas for sin, cos, and tan.

sin (2x) = 2 sin x cos x = 2 (1/2) (√3/2) = √3 / 2

cos (2x) = cos2x - sin2x = (√3/2)2 - (1/2)2 = 3/4 - 1/4 = 1/2

tan (2x) = 2 tan x / (1 - tan2x) = 2 (√3 / 3) / ( 1 - (√3/3)2) = 2/√3 / (1 - 1/3) = 2/√3 / (2/3) = 3/√3 = √3

To sum up, sin (2x) = √4 / 2, cos (2x) = 1/2, and tan(2x) = ✓3.

Step-by-step explanation:

BRAIN LY FAST

MARK A BRAINLESS

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2 years ago

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SpyIntel [72]

The first option is correct

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3 years ago

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