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3 years ago

Find the missing measure of a trapezoid with an area of 6.5 units squared and a base of 4 units and a height of 2 units.

1 answer:

5 0

A= a+b/2 *h

6.5 = a+4/2 * 2

6.5/2 = a+4/2 *2/2

3.25 = a+4/2

3.25*2= a+4/2*2
6.5 = a+4
6.5-4 = a+4-4
2.5 = a

The missing measure is 2.5

Check
6.5= 2.5+4/2 *2
6.5= 2.5+2*2
6.5=2.5 + 4
6.5=6.5

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3 years ago

(7/4x-5)+(2y-3.5)+(-1/4x+5)

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3 years ago

Paula has buttons. she gives away 28 buttons. choose the expression that shows the number of buttons paula has left.

mamaluj [8]

Answer:

y = 28 - x

Step-by-step explanation:

The variable x represents how many buttons Paula had before giving 28 away and the variable y represents how many buttons she has now.

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2 years ago

A x + b y is equal to 12

Nikitich [7]

Answer:

y= -a*x + 12

b b

Step-by-step explanation:

ax+by=12 (subtract "ax" from both sides so that the one on the left will become zero and we will have "by" )

by= -ax+12(divide both side by "by" so that we will have the equation as "y=mx+b")

finally the result will be:

y= -a*x + 12

b b

7 0

3 years ago

Find the 72nd term of the arithmetic sequence -27, -11, 5, ...

MAXImum [283]

Step-by-step explanation:

first identify the common difference

The first term which i will define by u⁰=-27

u¹=u⁰+(1)d where d is the common difference and u¹ is the second term

u¹=-27+d

-11=-27+d

d=27-11=16

The 72nd term would be u⁷¹ since we started from u⁰ as our first term:

Use the explicit relation given by:

u(n)=u⁰+(n)d

u(71)=-27+71(d)

u⁷¹=-27+71(16)

u⁷¹=-27+1136

u⁷¹=1109

8 0

3 years ago