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3 years ago

Solve for x. 9(x + 1) = 25 + x

2 answers:

8 0

Multiply 9 inside the terms:
So we get: 9x+9 = 25+x
Moving X from the other side to the 9x side, so it changes the sign from + to -
9x-x = 25-9
So, 8x = 16
X= 16/8
Therefore, X=2 is the answer

erica [24]3 years ago

3 0

Multiplying as indicated, 9x + 9 = 25 + x

Combining the x terms: 8x + 9 = 25
Combining the constants, 8x = 16.
Solving for x, x = 16/8 = 2 (answer)

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A right triangle has legs of lengths 6 and 15 inches. Find the length of the hypotenuse (nearest tenth).

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Answer:

The length of the hypotenuse is 16.2 inches.

Step-by-step explanation:

$c^{2} = a^{2} + b^{2}$

$c^{2} = 6^{2} + 15^{2}$

$c^{2} = 36 + 225$

$c^{2} = 261$

$\sqrt{c^{2} } = \sqrt{261}$

$c = 16.2$

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3 years ago

In the diagram, the measures of angle 3 and angle 6 are 50 degrees. The measure of angle 5 is 130 degrees. Are lines c and d par

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Answer:

Step-by-step explanation:

Angles 3 and 6 are "alternate interior" angles. When those angles are congruent, as these are, then the lines crossed by the transversal are parallel.

We expect angles 5 and 6 to be supplementary because they are a linear pair. That fact says nothing about the relationship of line d to line c.

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3 years ago

What is 2 7/8 plus 2 3/8 ?

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2 7/8 + 2 3/8= 4 10/8, which equals 5 2/8, which is also equal to 5 1/4

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3 years ago

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The elevation E, in meters, above sea level at which the boiling point of a certain liquid is t degrees Celsius is given by the

Anna007 [38]

Answer:

$E(119.5)= 730m$

Step-by-step explanation:

Given

$E(t)= 1200(120-t)+520(120-t)^2$

Required

Determine E(119.5)

$E(t)= 1200(120-t)+520(120-t)^2$

Simply substitute 119.5 for t

$E(119.5)= 1200(120-119.5)+520(120-119.5)^2$

Evaluate the expressions in bracket

$E(119.5)= 1200(0.5)+520(0.5)^2$

Solve 0.5²

$E(119.5)= 1200 * 0.5+520*0.25$

$E(119.5)= 600+130$

$E(119.5)= 730$

Hence;

$E(119.5)= 730m$

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3 years ago

Keller lives in a city with 54,706 people. Dawson lives in a city with 45,802 people. How can the two cities that Keller and Daw

Genrish500 [490]

Answer:

54,706 > 45,802

Step-by-step explanation:

Well, as you know, the > symbol means that one number has a greater value than another. For example, 2 > 1. The way we can find that out is using subtraction. Take 54,706 - 45,802, and if that number is positive, then the first number is greater than the other.

54,706 - 45,802 = 8,904

8,904 is a positive.

Therefore, 54,706 > 45,802.

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3 years ago

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