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IRINA_888 [86]
3 years ago
6

one of the acute angles in a right triangle has a measure of 34.6 degrees. What is the measure of the other acute angle

Mathematics
1 answer:
iren [92.7K]3 years ago
4 0

Answer:

55.4

Step-by-step explanation:

The sum of the angles of a triangle is 180

If we have a right triangle, one angle is 90

The other two angles must add to 90 degrees

Let the unknown angle be x

34.6 + x = 90

Subtract 34.6 from each side

34.6+x-34.6 = 90-34.6

x =55.4

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Step-by-step explanation:

We get two equations here. One for the area and one for the perimeter. The area gives us x×y=50. The perimeter, if we have a rectangle, x+y+x+y=30=2x+2y. For this to work we need to make a simple expression for x or y. Let's go with x here. 2x+2y=30 so x=15-y. if we fill that in the other equation we get (15-y)×y=50 (see picture). y=5 or y=10. If we fill in x×5=50 we get x=10 and vice versa. So the dimensions are 5 centimeters by 10 centimeters

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Solve the equation. 8x2 – 4 = 28
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Hello,

Your answer would be 2, -2.

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8x^2-4+4=28+4

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\frac{8x^2}{8}=  \frac{32}{8}  


x^2 = 4

x = +/4 

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4 0
2 years ago
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What is the value of (2x^2-5x+4)if x =7
Troyanec [42]
<span>We have to use PEMDAS for this expression.

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

</span>(2x^2 - 5x + 4)                    Original Mathematical Expression

[2(7)^2 - 5(7) + 4]                 Plugging the value of x, 7 into expression.

There are parentheses, so that means we have to work in them.

There are exponents, so we have to do those first.

[2(49) - 5(7) +4]                    Exponents.

There is multiplication, that we can do, so we do that left to right.

[98 - 35 + 4]                         Multiplication.

There is no division.

There is addition and subtraction, so we do those left to right.

[63 + 4]                                Subtraction.

67                                        Addition.

Final Answer: 67

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2 years ago
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