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Alexandra [31]
2 years ago
14

3. Twice the sum of 10 and a number is 28. Find the number.

Mathematics
1 answer:
inysia [295]2 years ago
7 0

Answer:

4

Step-by-step explanation:

The equation is 2(10+x)=28 where x is the unknown number we are trying to find. Use distrubutive property to combine like terms. 2 times 10 is 20 and 2 times x is 2x. Now we have 20+2x = 28. What you do to one side you must do to the other. 20 minus 20 is 0. 28 minus 20 is 8. Now our equation is 2x is 8. To find 1 x we divided in half. 8/2 is 4 therefore the missing variable is 4.

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What two numbers multiply to equal -27 but adds up to equal -6
kkurt [141]

Answer:

-9 and 3

Step-by-step explanation:

as -9×3= -27

and

-9+3= -6

4 0
3 years ago
What is the number written in standard form :six million , seven hundred thousand,twenty
Luda [366]
It would be 670.002*10^4

4 0
3 years ago
I need help finding m
Dafna1 [17]

Answer:

<A = 27 degrees

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

Tan A = opp side / adj side

Tan A = 2/4

Tan A = 1/2

Taking the inverse tan of each side

tan^-1 ( tan A) = tan ^-1 (1/2)

A =26.56505118

Rounding to the nearest  degree

A = 27

5 0
2 years ago
PLEASE HELP ME!!!!!!!!!
mihalych1998 [28]

Answer:

A) 24

Step-by-step explanation:

Total weight - loaded weight = space remaining in the trailer: 1050kg - 82kg = 968kg

space remaining ÷ the number of transport: 968 ÷ 40 = 24.2 OR 24

Hope it helps you

3 0
3 years ago
In the right triangle shown, m∠A = 30 degrees, and BC = 6√2, how long is AC?
mart [117]

They're trying to trick you with √2.  Remember in the 30/60/90 triangle the sides are in ratio 1:√3:2, with the "1" opposite the 30 degrees.

Here we have

1:√3:2  = 6√2:x:hypotenuse

or

x/(6√2) = √3/ 1

x = 6√2×√3 = 6√6

Answer: AC=6√6

3 0
3 years ago
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