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NeTakaya
3 years ago
12

How do I solve 4a-3=2a+7

Mathematics
1 answer:
IRINA_888 [86]3 years ago
6 0
1).  Subtract  2a  from each side.        2a - 3  =  7

2).  Add  3  to each side:                       2a        =  10

3).  Divide each side by  2 :                  <em>  a        =  5</em>
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The ribbon was 3 1/4 inches wide and had an area of 19 1/2 square inches. What is the length of the ribbon? Please Help Will Giv
miv72 [106K]
Hello!

The formula for finding area is l × w

If the area is 19 ½ inches and it was 3 ¼ inches wide, then the length will be 19 ½ ÷ 3 ¼ (Area ÷ Width)

19  \frac{1}{2} \div 3  \frac{1}{4}

Change both to improper fraction

19  \frac{1}{2} =   \frac{39}{2}

3  \frac{1}{4} =  \frac{13}{4}

\frac{39}{2} \div  \frac{13}{4}

Keep 39/2
Change ÷ to ×
Flip 13/4 = 4/13

\frac{39}{2} \times  \frac{4}{13} =  \frac{156}{26} = 6

\framebox {The length of the ribbon is 6 inches}
5 0
3 years ago
Read 2 more answers
Need HELP PLS PIC ATTACHED
Vera_Pavlovna [14]

Answer:

4x^{2}-13x+10

Step-by-step explanation:

(4x+5)(x-2)

Multiply each term in the first parenthesis by each term in the second (foil)

Step 1: Expand it by writing out each multiplication. I added a picture showing which order to do it. (go in order of green, red, blue, yellow.) (you can remember this as first, outside, inside, last.)

When you expand it'll look like: 4x⋅x+4x⋅-2-5x-5⋅-2

Step 2: Calculate product

4x⋅x+4x⋅-2-5x-5⋅-2 (for the 4x⋅x it would be written like 4x^{2})

   4x^{2}+4x⋅-2-5x-5⋅-2

4x^{2}+4x⋅-2-5x-5⋅-2 (4x⋅-2 becomes -8x) (multiply 4x times -2)

4x^{2}-8x-5x-5⋅-2

4x^{2}-8x-5x-5⋅-2 (-5⋅-2 becomes +10) (multiply -5 times -2)

4x^{2}-8x-5x+10

Step 3: collect like terms

4x^{2}-8x-5x+10 (-8x-5x becomes -13x) (-8x times -5x)

4x^{2}-13x+10 is the most simplified so it should be your final answer

4 0
9 months ago
How to solve <br> 12 x 3/4
tamaranim1 [39]

Answer:

9

Step-by-step explanation:

Write the fractions in fraction form 12/1 x 3/4

Multiply numerator x numerator and denominatior x denominato

You will get 36/4

36/4 = 9

5 0
3 years ago
Solve the equation.<br> y +8= 3 pls help 20 points
stiks02 [169]

Answer:

y = 3-8 =-5

Step-by-step explanation:

mark me as brainliest ❤️

5 0
2 years ago
Read 2 more answers
Explain why you do not have to do computing to solve 15×0×(13+7)
neonofarm [45]
The answer is 300 if you do the per enthuses first
5 0
3 years ago
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