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anzhelika [568]
3 years ago
14

∠A and ∠B are complementary angles.

Mathematics
1 answer:
iogann1982 [59]3 years ago
3 0
Cos 52 = 0.6157

sin 42 = cos 48 = 2/3     (because 42 + 38 = 90 - complementary angles)

if tan 20,5 = 3/8 then  tan 69.5 wil =  1 / 3/8  = 8/3

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Danny is 603/4 inches tall . His twin sister is 58 1/8 inches tall.How much taller is Danny than his twin sister.
Mazyrski [523]

Answer:

2 5/8 inches

Step-by-step explanation:

This is a subtraction problem.

You must subtract 58 1/8 inches from 60 3/4 inches.

We need a common denominator for the fractions.

The LCD of 4 and 8 is 8.

60 3/4 = 60 6/8

58 1/8 = 58 1/8

60 3/4 - 58 1/8 = 60 6/8 - 58 1/8 = 2 5/8

Answer: 2 5/8 inches

7 0
3 years ago
Find the area with a height of 6.45 and base of 9.75
Kisachek [45]

Answer:

62.8875

Step-by-step explanation:

To finf the area of this figure you must multiply 6.45*9.75

4 0
4 years ago
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Write a letter to the Principal of your school stating what you want her to do to improve the school.​
Llana [10]

Answer:

you can write about adding new computers or moniters

8 0
3 years ago
For 20 points-5 3/4 pizzas for 3 teenagers. How many pizzas per teenager?
Anna71 [15]

Answer:

.25 or 1/4

Step-by-step explanation:

3 0
4 years ago
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Keisha, Scott, and Ryan have a total of $101 in their wallets. Keisha has $6 more than Scott. Ryan has 3 times what Scott has. H
Yuri [45]

Answer:

Keisha =$25

Scott =$19

Ryan = $57

Step-by-step explanation:

Let the amount each have be represented by A, B and C

Keisha = A

Scott = B

Ryan = C

Keisha , Scott and Ryan have a total of $101.

That’s

A + B + C = $101

Keisha has $6 more than Scott

A = 6 + B

Ryan has 3 times Scott

C = 3B

Substitute 6+B for A and 3B for C in the first equation.

That’s

A + B + C = 101

6 + B + B + 3B = 101

6 + 5B = 101

Subtract 6 from both sides

6 - 6 + 5B = 101 - 6

5B = 95

Divide both sides by 5

B = 95/5

B = 19

Scott has $19

Recall Keisha has $6 more than Scott B.

That’s A = 6 + B

A = $6 + $19

A = $25

Keisha has $25

Also, Ryan C has 3 times what Scott B has .

That’s

C = 3 x B

C = 3 x 19

C = $57

Therefore, Keisha has $25, Scott has $19 and Ryan has $57

3 0
3 years ago
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