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schepotkina [342]
3 years ago
11

To find the area of a trapezoid

Mathematics
1 answer:
SVEN [57.7K]3 years ago
3 0
A = 0.5 * 4 * (14 + 6)= 40 ft^2

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A university council wants to determine the need for a new staff room. The council conducted a survey of the staff by randomly s
iogann1982 [59]

Answer:

As the sample size is appropriately large, the margin of error is 0.026

Step-by-step explanation:

7 0
3 years ago
Write as an ordered pair. 4x+2y=16 and -4y+x=4
Margaret [11]

Answer:

(4,0)

Step-by-step explanation:

4x+2y=16

-4y+x=4

Multiply the first equation by 2

2(4x+2y)=16*2

8x +4y = 32

Add the 2nd equation

8x +4y = 32

x  -4y     =4

--------------------

9x            =36

Divide each side by 9

9x/9 = 36/9

x=4

Now solve for y

-4y +x =4

-4y +4 = 4

Subtract 4 from each side

-4y +4-4=4-4

-4y =0

Divide by -4

-4y/-4 =0/-4

y=0

(4,0)

4 0
3 years ago
Read 2 more answers
Urgent ! <br>i can't seem to solve this :( ​
Archy [21]

Answer: 15 cm to the highest total ; amount of triangles: 25  

Step-by-step explanation: for the height just add 3 cm until you reach the top, which will give you 15 cm

for the amount just count them and for the top top layer count up to 9, which will give you 25 triangles.  

3 0
3 years ago
PARTY IN THIS QUESTION ONLY WELL KNOWN PEOPLE ON BRAINLY CAN COME
azamat

Answer:

hi

Step-by-step explanation:

3 0
3 years ago
A one day trip to new york, mary spent $6.25 for breakfast and 8.95 for lunch. She can spend no more than an average of $8.50. H
zysi [14]

Mary spent $10.30 on dinner to stay in budget.

Step-by-step explanation:

Amount spent on breakfast = $6.25

Amount spent on lunch = $8.95

Amount spent on dinner = x

Average = $8.50

Average = \frac{Sum\ of\ values}{No.\ of\ values}

8.50 = \frac{6.25+8.95+x}{3}\\8.50=\frac{15.20+x}{3}

Multiplying both sides by 3

8.50*3=\frac{15.20+x}{3}*3\\25.50=15.20+x\\25.50-15.20=x\\x=10.30

Mary spent $10.30 on dinner to stay in budget.

Keywords: Average, addition

Learn more about addition at:

  • brainly.com/question/4694425
  • brainly.com/question/4695279

#LearnwithBrainly

7 0
3 years ago
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