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astra-53 [7]
4 years ago
12

10 points - need the answers w/ work to questions #16-18.

Mathematics
1 answer:
Ghella [55]4 years ago
7 0
Well mise well sign up for welfare cause ur gonna fail math
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Please help with this math problem! Will give brainliest! :)
tangare [24]

Answer:

9

Step-by-step explanation:

All triangles (3 sided polygons) have angles added up to 180, so we can do the following:

(7x-1) + (7x+8) + (5x+2) = 180° <em>- equation</em>

7x-1 + 7x+8 + 5x+2 = 180° <em>- "distribute"</em>

19x - 1 + 8 + 2 = 180°<em> - combine the x terms</em>

19x + 9 = 180° <em>- combine the integer terms</em>

19x = 171 <em>- subtract 9 form both sides</em>

x = 9 <em>- divide both sides by 19</em>

4 0
2 years ago
Each gram of fat is 9 calories. Each serving of cake is 700 calories. What percent of these calories are from fat?
emmainna [20.7K]

Answer:

1.3%

Step-by-step explanation:

\frac{9}{700}

9 ÷ 700

0.0129

0.0129 × 100

1.3%

3 0
3 years ago
What is the measure of op С : 429 180° ​
Novosadov [1.4K]

Answer:

90

Step-by-step explanation:

the angles that are on the opposite side are same

LEARNED THIS IN FOURTH GRADE

I'm still in  fourth grade

my math teacher taught us this separately.

I go to School for the Highly Gifted in Grand Prairie, Texas

5 0
3 years ago
The water in a swimming pool increased from 4.5 to 6 feet.What is the percent in the water level rounded to the nearest tenth of
GalinKa [24]

(6) / (4.5) = 4 / 3  =  1.333...

The level increased by 33-1/3 % .

The old level was  75%  of the new level.

The amount of water in the pool also had to
increase  33-1/3 % .  If you didn't have that
much water to put in the pool, you couldn't
change the surface level from  4.5ft  to  6ft .

8 0
4 years ago
The graph of linear function g is shown on the grid. What is the zero of g? (-8,3) (-3,-4.5)
Ratling [72]

Answer:

Zero of the function = (-6, 0)

Step-by-step explanation:

Let the equation of the function given in the graph is,

y = mx + b

where m = slope of the line passing through two points (x_1,y_1) and (x_2,y_2) = \frac{y_2-y_1}{x_2-x_1}

b = y-intercept of the line

From the graph attached,

Slope of the line passing through (-8, 3) and (-3, 4.5) = \frac{-4.5-3}{-3+8} = -1.5

y - intercept 'b' = -9

Therefore, equation of the line will be,

y = -1.5x - 9

Function representing this line will be,

g(x) = -1.5x - 9

Zeros of the given function will be,

g(x) = 0 Or x-intercept

-1.5x - 9 = 0

x = -6

Therefore, zero of the given function is (-6, 0).

3 0
3 years ago
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