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nikitadnepr [17]
3 years ago
6

2(4x+3)=10x-2 Anyone know how to work this out? Working out needed

Mathematics
1 answer:
Step2247 [10]3 years ago
5 0

Answer:

x = 4

Step-by-step explanation:

1. expand.

8x + 6 = 10x - 2

2. Subtract 8x from both sides.

6 = 10x - 2 - 8x

3. simplify 10x - 2 - 8x to 2x - 2.

6 = 2x - 2

4. Add 2 to both sides.

6 + 2 = 2x

5. Simplify 6+2 to 8.

8 = 2x

6. Divide both sides by 2.

\frac{8}{2}  = x

7. Simplify 8/2 to 4.

4 = x

8. switch sides.

x = 4

Therefor, rhe answer is x=4

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Step-by-step explanation:

Let

c = 11.5 cm

a = 8.9 cm

b = ?

Since this is a right triangle, we can use Pythagorean theorem to find the length of side b:

c^2 = a^2 + b^2

\Rightarrow b^2 = c^2 - a^2

Taking the square root of the equation above, we get

b = \sqrt{c^2 - a^2} = \sqrt{(11.5\:\text{cm})^2 - (8.9\:\text{cm})^2}

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6 0
3 years ago
HELP ASAP LOOK AT THE PICTURE ATTACHED!!!
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Answer: infinitely many solutions

Step 1)

√25y² +16 =5y + 4

(√25y² + 40y + 16)² = (5y + 4)²

25y² + 40y + 16 = (5y + 4)²

25y² + 40y + 16 = (5y)² + 2 × 5y × 4 + 4²

25y² + 40y + 16 = 5² × y² + 2 × 5y × 4 + 4²

25y² + 40y + 16 = 25y² + 2 × 5y × 4 + 16

25y² + 40y + 16 = 25y² + 40y + 16

25y² + 40y + 16 = 25y² + 40y + 16

25y² + 40y + 16 − 25y² − 40y − 16 = 0

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6 0
3 years ago
a rectangle is 14 centimeters long if the width of the rectangle is half of the length calculate the area of the rectangle​
Varvara68 [4.7K]

Answer:

98 cm²

Step-by-step explanation:

area of rectangle = length * width

length = 14 cm, width = 14/2 = 7 cm

area = 14 * 7 = 98 cm²

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2 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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marissa [1.9K]

Answer:

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Step-by-step explanation:

Remember, complementary angles add up to equal 90 degrees whereas supplementary angles add up to equal 180 degrees.

In this case, since your angles together form a straight line, they're supplementary angles. Now, to solve for x:

(3x + 25) + 2x = 180        (step 1: set the equation equal to 180)

5x + 25 = 180                  (step 2: combine like terms)

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5x / 5 = 155 / 5               (step 4: divide by 5, BS to get x by itself)

x = 31                    

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3 years ago
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