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aleksklad [387]

3 years ago

15

Use the set of clues in the equations below to find the value of each variable .

1 answer:

soldier1979 [14.2K]3 years ago

4 0

There are many ways to solve this problem. All you have to do is simple algebraic manipulation. Solve for b and h with the two simpler equations:
2b = 12; divide 2 on both sides to get b = 6
h - x = 2; add x to both sides to get h = (2 + x)

Plug this stuff into the first equation to solve for x. Once we solve for x, we can plug that x value into the equation for h. Because you can see we didn’t get an actual numerical value for h. So:
x + (2+x) + 6 = 14
Subtract 6 from both sides and distribute that plus sign to get rid of the parenthesis. Then combine the like terms to get:
2x + 2 = 8
Subtract 2 from both sides and divide by 2 to get x = 3

Finally plug it into the equation for h:
h = 2+3 = 5

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azamat

Answer:

180

Step-by-step explanation:

let x = total units of electricity after 250 units

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Step-by-step explanation:

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2 years ago

Read 2 more answers

If the legs of a right triangle are 6 cm and 5 cm find the area of the triangle

Ilia_Sergeevich [38]

Answer: 15 cm²

Step-by-step explanation: To find the area of a triangle, start with the formula for the area of a triangle which is shown below.

$Area = \frac{1}{2}bh$

In this triangle, the base is 6 centimeters and the height is 5 centimeters. Now, plugging into the formula, we have $(\frac{1}{2})(6 cm)(5 cm)$ .

Now, it doesn't matter which order we multiply.

So we can begin by multiplying 1/2 times 6 cm and notice that the 2 in 1/2 and the 6 cross cancel to 1 and 3. So we're left with 3 cm.

Now, (3 cm)(5cm) is 15 cm².

So the area of the triangle is 15 cm².

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3 years ago