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kaheart [24]
3 years ago
14

3а - 10 = a + 20 How do you do this help please it will mean a lot

Mathematics
2 answers:
marin [14]3 years ago
7 0

Answer:

a=15

Step-by-step explanation:

2a-10=20

2a=30

a=15

can i have one brainliest plz

disa [49]3 years ago
6 0

Answer:

a = 15

Step-by-step explanation:

I assumed you were trying to solve for A :)

3a - 10 = a + 20

1. Combine like terms (A's on side, numbers on the other).

3a - 10 = a + 20

-a           -a

-----------------------

2a - 10 = 20

     +10   +10

------------------------

2a = 30

Now that all of your like terms are combined, work to isolate A. The only way to do this is to divide by 2 on both sides of the equal sign.

\frac{2a}{2} = \frac{30}{2}

This leaves you with a = 15, which is your answer if you are told to solve for A

I hope this helps!

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2. French Vanitta K-Cups that originally<br> cost $5.99 are now on sale for $4.75.
just olya [345]

Answer:

20.7% is the % decrease.

Step-by-step explanation:

 If you are finding the % of decrease then see below.

% Decrease = (Original Cost - New Cost ) ÷ Original Cost  × 100

5.99 - 4.75 = 1.24

1.24 ÷ 5.99 = .2070

.2070 × 100 = 20.7%

7 0
3 years ago
Which expression is equivalent to (27.3-5.9)4?
makkiz [27]

Answer:

109.2-23.6 = 85.6

Step-by-step explanation:

use bodmas

B=bracket

O=of or multiplication

D=division

M=multiplication

A=addition

S=subtraction

so when you are opening a bracket you multipli the number in the bracket with the one outside the bracket

I.E

4×27.3=109.3

4×5.9=23.6

109-23.6=85.6

3 0
3 years ago
Read 2 more answers
The alphabet game costs $.25 to play. Before the game, 26 slips of paper with a different letter of the alphabet on it are put i
julsineya [31]

Answer: 25/676

Step-by-step explanation:

Number of possible outcomes = 26

In other to win, one must draw must be either (A, E, I, O or U)

Therefore required drws to win = 5

First draw:

P(win) = Total required outcome / Total possible outcome

P(win) = 5/26

Second draw:

P(win) = Total required outcome / Total possible outcome

P(win) = 5/26

Therefore,

P(winning twice) = (5/26) × (5/26) = 25/676

8 0
3 years ago
Find the area of the shaded region.
pentagon [3]

Answer:

Area of the shaded region = 100 inch ^2

Step-by-step explanation:

Area of the Shaded region= Area of rectangle - Area of the triangle

Area of the rectangle= Length * breadth

Length= 20 inch     Breadth= 10 inch

Putting the values in the formula

Area of the rectangle :

                                        20 * 10\\\\                                     =200 square inches

Area of the Triangle =  \frac{1}{2} * Base*Height

     Base of triangle= 20 inches  , Height of the triangle = 10 inches

              Area of triangle  Area=\frac{1}{2} *20*10\\\\=100 inch^2

Area of the shade region:

                                  = 200-100\\                                         = 100 inch^2

6 0
4 years ago
Given: AY and BX bisect each other, PROVE: triangle ABJ and YJX are congruent...help me
Tamiku [17]
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