3 years ago

What does a equal -5(6a+21)=-15

1 answer:

6 0

Step 1 remove paranthesis
(-30a-105)=-15

Step 2: Move constant to RHS (take not negative sign is removed if sides are changed and vice versa)

-30a=-15+105
-30a=90

Step 3: Simplify
-a=3

Step 4: remove negative sign from variable
a=3

You might be interested in

Lines c and d are parallel lines cut by transversal p. Which much be true by the corresponding angles theorem?

Flura [38]

Hello!
The corresponding angle theorem states that if two parallel lines are cut my a transversal, then the corresponding angles are congruent. Therefore, the correct answer is:
B. ∠2 = ∠6

If this was correct, please give it 5 stars!

4 0

3 years ago

Read 2 more answers

4x-3=5x-21 what does x=

torisob [31]

U subtract 4x by 5x and then you add 3 by -21 and the answer is x=18

3 0

3 years ago

HELP QUICK <br> (question in picture)

anzhelika [568]

Answer:

Step-by-step explanation:

There’s a total of 10+16+20+18 = 64 candies.

There’s 10 red candies.

10 / 64 = 0.15625

Rounded: 0.2

7 0

3 years ago

Which property was used to simplify the expression?<br><br> (3z)^2 = 3^2z^2 = 9z^2

svet-max [94.6K]

One of the product rules for exponents was used.
$(ab)^{c}=a^{c}b^{c}$

Or, you can consider that the definition of an exponent and the associative and commutative properties of multiplication were used.
$(3z)^{2}\\=(3z)(3z)\\=3\cdot 3\cdot z\cdot z\\=3^{2}z^{2}\\=9z^{2}$

3 0

3 years ago

PLEASE HELP ME!!! 10 points!

Brut [27]

Answer:

5/4

hope it helps u

3 0

3 years ago

Read 2 more answers