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ozzi
3 years ago
9

Can someone help me with number 6 answer is not B I’m not sure what is I need help plzzzzz

Mathematics
1 answer:
fgiga [73]3 years ago
5 0

Answer:

Its D

Step-by-step explanation:

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Ina writes the expression below. [x + 5) - (x - 5] What is the value of Ina's expression for x= 10?​
solmaris [256]

Answer:

10

Step-by-step explanation:

Given the expression below.

[x + 5) - (x - 5]

If x = 10, we will have to substitute x = 10 into the expression given as shown;

[x + 5) - (x - 5]

=[10 + 5) - (10 - 5]

= 15 - 5

= 10

Hence the required value is 10

8 0
3 years ago
Math help please show work thanks
GalinKa [24]

Problem 5

d = 29 = diameter

r = d/2 = 29/2 = 14.5 = radius

SA = surface area of sphere

SA = 4*pi*r^2

SA = 4*pi*(14.5)^2

SA = 841pi

SA = 841*3.14

SA = 2,640.74 square inches

To convert from square inches to square feet, we divide by 144. This is because 12^2 = 144.

2,640.74 square inches = (2,640.74)/144 = 18.3 sq ft

<h3>Answer: 18.3 square feet (approximate)</h3>

=====================================

Problem 6

d = 10.7 = diameter

r = d/2 = 10.7/2 = 5.35 = radius

L = 22.3 = slant height

SA = surface area of the cone

SA = pi*r^2 + pi*r*L

SA = pi*(5.35)^2 + pi*5.35*22.3

SA = 147.9275pi

SA = 147.9275*3.14

SA = 464.49235

<h3>Answer:  464.49235 square cm (approximate)</h3>
8 0
3 years ago
In November 2010 the average cost of 5 gallons of regular unleaded gasoline in the United States was $14.46. What was the averag
Svetach [21]

Answer:

$46.72

Step-by-step explanation:

The first step is to find the price of 1 gallon

5 gallons= 14.46

1 gallon= x

5x= 14.46

x= 14.46/5

1 gallon= $2.92

Therefore the cost of 16 gallons of gasoline can be calculated as follows

1 gallon= 2.92

16= x

x= 2.92 × 16

= $46.72

6 0
3 years ago
I can't work out what k is?
monitta
The total sum of angles at a point is 360, so basically just minus 360 by 90 and 60, and u get k, which is 210 °
5 0
3 years ago
A phone survey about university tuition has a margin of error of +/– 2%. What is the range of number of people who think tuition
shtirl [24]
 your ...correct answer is D
4 0
3 years ago
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