3 years ago

If ABC =30o , what is the measure of its complement CBD

1 answer:

5 0

It would be 60 degrees because compliment means 90 degrees. In order to find m<CBD, you would need to subtract 30 degrees from 90 degrees which would equal 60 degrees. 90-30=60

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Three Packets of crisps cost £1.20 how much will 6 packets cost

a_sh-v [17]

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3 years ago

The second digit of a four digit number is "0". If you write the digits of this number backwards, you will get a number 9 times

wolverine [178]

Answer:

1089

Step-by-step explanation:

The original number is A0CD, We have that DC0A = 9 x A0CD.

If A =1, then D = 9 and we have:

9C01 = 9 x 10C9

In order for this expression to be true, the following must also be true:

(C x 9) + 8 must be divisible by 10, which means that C x 9 must end in a 2.

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3 years ago

Given the equation 4x + 7 = 3(2x − 5), solve for the variable. Explain each step and justify your process.

MariettaO [177]

Part 1: $4x + 7 = 3(2x - 5)$

$4x+7=6x-15$

$7=6x-15-4x

$

$7=2x-15$

$7+15=2x$

$22=2x$

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Part 2: Sam is not correct because <span>he messed up the second step. He added 2x on both sides to get 7x, instead he should have subtracted. </span>

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3 years ago

Evaluate [3(5 + 6) + 2] ÷ 7

larisa86 [58]

The answer to the problem is 5

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4 years ago

Read 2 more answers

PROBLEM 2<br> What is the greatest common factor of 15 and 30?

seropon [69]

Answer: 15

Step-by-step explanation: