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Zolol [24]
3 years ago
15

Help me and show your work.

Mathematics
1 answer:
e-lub [12.9K]3 years ago
4 0

Answer:

x = 129

Step-by-step explanation:

Mathematically, the sum of interior angles of a polygon can be calculated using the formula;

(n-2)180

from the question given , n = 7 since the polygon has 7 sides

thus, we have it that

(7-2)180 = 5 * 180 = 900

Mathematically, by adding all the given interior angles, we can get the value of the total

We have this as;

900 = x + 131 + 119 + 125 + 133 + 125+ 138

900 = x + 771

x = 900-771

x = 129

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Dilate the circle using center (0,0) and scale factor 2<br> Pls help
gladu [14]

Answer:

look at image

Step-by-step explanation:

you're just making the circle twice as big. so since one of the points of the circle is (0,2) it would now be, (0,4) because 2 x 0 = 0 and 2 x 2 = 4.

6 0
3 years ago
Jack’s first weight increased by 20% and then his new weight decreased by 25%. His final weight is what percent of his beginning
ElenaW [278]

Lets suppose his initial weight was 60 kilograms

A gain of 20%  would make his new eight  60 + 20*60/100

=  60 + 12

= 72 kg

he lost 25% of this:-

= 72 -   25 * 72/100 =  54 kg

This = (54/60) * 100  = 90% of his beginning weight  Answer


8 0
4 years ago
What is an equation of the line that passes through the points (-6, 5) and (6, 7)?
e-lub [12.9K]

Answer:

y=\frac{1}{6}x+6

Step-by-step explanation:

Let (x_1,y_1)\rightarrow(-6,5) and (x_2,y_2)\rightarrow(6,7)

<u>Determine slope</u>

<u />m=\frac{y_2-y_1}{x_2-x_1}\\ \\m=\frac{7-5}{6-(-6)}\\ \\m=\frac{2}{6+6}\\ \\m=\frac{2}{12}\\ \\m=\frac{1}{6}

<u>Use either ordered pair to find the y-intercept</u>

<u />y=mx+b\\\\7=\frac{1}{6}(6)+b\\\\7=1+b\\\\6=b

<u>Final equation</u>

<u />y=\frac{1}{6}x+6

4 0
2 years ago
1. Find a if x³ + ax² - x -8 is divisible by x -1​
Amanda [17]

Answer:

a = 8

Step-by-step explanation:

x-1 = 0

x = 1

let x³ + ax² -x -8 be p(x)

hence, p(1) = (1)³ + a(1)² -1 -8 = 0    (since, x-1 is a factor)

= 1 + a - 1-8

= a - 8 = 0

therefore, a = 8

6 0
3 years ago
4. a) In a sale, a car costing $ 9500 Średuced by<br>30%<br>what's the sale Price?​
GREYUIT [131]

Answer:

$6650

Step-by-step explanation:

→ Calculate the decimal multiplier

100 - 30 = 70

70 ÷ 100 = 0.7

→ Multiply the decimal multiplier by the cost

9500 × 0.7 = 6650

6 0
4 years ago
Read 2 more answers
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