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steposvetlana [31]
3 years ago
9

Find the area of this shape.

Mathematics
1 answer:
aniked [119]3 years ago
7 0

Answer:

Step-by-step explanation:

Bottom triangle

Area = b * height

b = 4 + 4 = 8 cm

h = 5.75

Area = 1/2 * 5.75 * 8

Area = 23 cm^2

Trapezoid

b1 = 8

b2 = 4

h = 2

Area = (b1 + b2)*h/ 2

Area = (8 + 4)*2 /2

Area = 12

Total area = 23 + 12

Total area = 35

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Karolina [17]

Answer:

No. It is not a good idea. She should write things she is good at or has done in the past. Leaving it blank will help not Isabella.

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3 years ago
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Write the equation of the sphere in standard form. x2 + y2 + z2 + 8x − 6y + 4z + 20 = 0
Nuetrik [128]

Answer:

(x+4)^2 + (y-3)^2 + (z+2)^2 - 3^2 = 0


Step-by-step explanation:

You have to find a, b, c, r so that the polynomial expands to match the given equation.

(x-a)^2 + (y-b)^2 + (z-c)^2 - r^2 =\\x^2-2ax+a^2+\\y^2-2by+b^2+\\z^2-2cz+c^2-r^2 =\\ x^2 + y^2 + z^2 + 8x - 6y + 4z + 20

(a^2+b^2+c^2-r^2-20)+\\x(-8-2a)+y(6-2b)+z(-4-2c)=0

-8-2a=0, 6-2b=0, -4-2c=0\\a=-4, b=3, c=-2

(-4)^2+3^2+(-2)^2-r^2-20 = 0

16+9+4-20=r^2

r^2=9

r=3

(x+4)^2 + (y-3)^2 + (z+2)^2 - 3^2 = 0



5 0
4 years ago
Question 6(Multiple Choice Worth 4 points)
Alla [95]

Answer:

The scatter plot would closely resemble a straight line with a positive slope. The data has a strong, positive correlation, and a causal relationship exists between the team playing at home and winning.

Step-by-step explanation:

the closer the correlation coefficient is to +1 the stronger the positive correlation.

plz, mark brainliest

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Hey, I just have one question, what is 8y −5 < 3?
Mashutka [201]

Answer:

y < 1

Step-by-step explanation:

In order to solve this inequality, we must isolate the y variable.

First add 5 on both sides of the inequality sign:

Now you have 8y < 8.

Then divide by 8 on both sides, to get y alone:

Now you have y < 1.

Hope this helps you :)

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3 years ago
Complete the table below for the function y = -3x+7
KiRa [710]

Answer:

(x,y)--> (2,1), (4, -5), (7, -14), (9, -20), (11, -26)

Step-by-step explanation:

y = -3x + 7

substituting x-values in y= -3x + 7

x = 2

y= -3 × 2 + 7

= -6 + 7

= 1

x=4

y= -3 × 4 + 7

= -12 + 7

= -5

x=7

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= -21 + 7

= -14

x=9

y= -3 × 9 + 7

= -27 + 7

= -20

x=11

y= -3 × 11 + 7

= -33 + 7

= -26

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3 years ago
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