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kvasek [131]
3 years ago
11

The area of the trapezoid is 30square inches.

Mathematics
1 answer:
AysviL [449]3 years ago
7 0

Answer:

the height is 7.5

Step-by-step explanation:

30 divided by 4 = 7.5

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What’s the work and answer? Someone please tell me
NNADVOKAT [17]

Answer:

75mm

Step-by-step explanation:

average = sum of all number ÷ the amount of number

average = 90mm + 74mm + 112mm+ 30mm + 100mm + 44mm = 450mm ÷ 6

average = 75mm

brainliest is appreciated

3 0
3 years ago
Simplify the expression below. (-3x2 + 2x - 4) + (4x2 + 5x +9)
TiliK225 [7]

Answer: =x2+7x+5

Step-by-step explanation:

−3x2+2x−4+4x2+5x+9

=−3x2+2x+−4+4x2+5x+9

Combine Like Terms:

=−3x2+2x+−4+4x2+5x+9

=(−3x2+4x2)+(2x+5x)+(−4+9)

=x2+7x+5

Answer:

=x2+7x+5

4 0
4 years ago
Read 2 more answers
okay I'm still so confused. I figured out how to do it but when I do the one with 2 6's it ends up being x=0 and I feel like I I
suter [353]

Answer:

24

Step-by-step explanation:

24

4 0
3 years ago
What is the radius of a circle whose equation is x2 y2 8x – 6y 21 = 0?
andrew11 [14]

we know that

the standard form of the equation of the circle is

(x-h)^{2} +(y-k)^{2}=r^{2}

where

(h,k) is the center of the circle

r is the radius of the circle

In this problem we have

x^{2} +y^{2} +8x-6y+21=0

<u>Convert to standard form</u>

Group terms that contain the same variable, and move the constant to the opposite side of the equation

(x^{2}+8x) +(y^{2}-6y)=-21

Complete the square twice. Remember to balance the equation by adding the same constants to each side.

(x^{2}+8x+16) +(y^{2}-6y+9)=-21+16+9

(x^{2}+8x+16) +(y^{2}-6y+9)=4

Rewrite as perfect squares

(x+4)^{2} +(y-3)^{2}=4

(x+4)^{2} +(y-3)^{2}=2^{2}

the center of the circle is (-4,3)

the radius of the circle is 2\ units

therefore

<u>the answer is</u>

the radius of the circle is 2\ units


8 0
3 years ago
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What is the rule of function for (-1,5) (0,7) (1,9) (2,11) (3,13)?
Colt1911 [192]
These (x,y) pairs represent the function
y = 2x+7
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