2 years ago

Please help me asap

Mathematics

1 answer:

sergeinik [125]2 years ago

8 0

Answer:

Step-by-step explanation:

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Find the value of ( 1+cosA) (1-cosA)

Mandarinka [93]

Answer:

sin^2 A

Step-by-step explanation:

first expand the trigonometry

1(1-cosA)+cosA(1-cosA)

=1-cosA+cosA-cos^2 A

= 1-cos^2 A

from trigonometric identity sin^2 A + cos^2 A= 1

sin^2 A= 1- cos^2 A

=sin^2 A

3 0

2 years ago

A man drive 250 miles on 2.5 hours.if the posted speed limit was 75 mph the entire way, approximately how many miles per hour ov

kow [346]

Answer:

He was going 25 miles over the speed limit.

Step-by-step explanation:

250 miles in 2.5 hours is 250/2.5. That equals 100

100-75=25

4 0

2 years ago

PLEASE HELP ILL GIVE BRAINLEST

Liono4ka [1.6K]

Answer:

4177

Step-by-step explanation:

add what rhode island is and then do the same for washington. then add both

6 0

2 years ago

Which equation demonstrates the distributive property?

shepuryov [24]

I'm gonna say C )

We have to multiply the number outside the parenthesis by the numbers inside.

8 0

2 years ago

Read 2 more answers

Leah claims that these figures are not similar. When she compared the heights, she wrote 27. Then she compared the bases and got

Flauer [41]

Answer:

<h2>Leah is actually wrong, because those rectangles are similar.</h2>

Step-by-step explanation:

Remember that similarity is about having proportional sides and congruent angles. When we have congruent sides, then those rectangles are congruent not similar.

In this case, to find the similarity, Leah should compare bases and heights thorugh division, because the ratio between heights and the ratio between bases must be equal. So, let's divide.

$\frac{21}{6}=3.5$

$\frac{7}{2}=3.5$

As you can observe, both ratios are equal.

Therefore, those rectangles are congruent.

4 0

2 years ago