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Fudgin [204]
3 years ago
7

Also need help with this one too please

Mathematics
1 answer:
Anit [1.1K]3 years ago
7 0

Answer:

b=18

a=6√18

Step-by-step explanation:

tan 45=b/18

by cross multiply

b=tan 45×18

=1×18

=18

find (a) by using pythagora's theorem

a^2=18^2+18^2

=324+324

a^2=648

take square root both sides

√a^2=√648

a=√36×18

a=6√18

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Rewrite the sum of 30 and 42 by factoring out of the greatest common factor
kvasek [131]

Answer:

12

Step-by-step explanation:

Factors of 30: 1,2,3,5,(6),10,15,30

Factors of 42: 1,2,3,(6),7,14,21,42

30 divided by 6, 42 divided by 6

(5) + (7)= 12

8 0
3 years ago
I don't get this pls help
dmitriy555 [2]

Answer:

  d, e

Step-by-step explanation:

The applicable rules of exponents are ...

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In this case, it means the product is ...

  (6^1)(6^0)(6^-3) = 6^(1+0-3) = 6^-2 = 1/6^2 = 1/36

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The 6 without an exponent is equivalent to 6^1, an exponent of 1.

The sum of the exponents is -2.

Add the exponents to simplify the expression.

The value of the expression is 1/36.

An equivalent is any expression that results in 6^-2. One such is (6^5)(6^-7).

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Only the last two choices, d and e, apply.

3 0
4 years ago
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ExtremeBDS [4]

Answer:it would take the plane 40 seconds

Step-by-step explanation:

if you multiply by two then you would be able to get 30

like 15 times 2 and since it’s 15 miles to 20 seconds or 15:20 you would have to multiply by the same number.

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Step-by-step explanation:

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