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V125BC [204]
3 years ago
15

What is “known fact” and “unknown fact” in multiplication

Mathematics
1 answer:
Lynna [10]3 years ago
6 0
Known is the factors and the unknown is the product
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Find the area of a circle whose radius is 12 in. Round to the nearest 10
Ksivusya [100]

Answer:

Area = pi r²

area = 22/7 × 12 × 12 = 452.57 in²

7 0
3 years ago
(Math Help Quick Lots of points please thanks) 2
Alona [7]

Answer:

EY = 60

DW = 68

DE = 128

Step-by-step explanation:

Given

  • YW = 32
  • DZ = 64
  • FW = 68

As YW is the perpendicular bisector of EF, then EY = FY

FY = √(FW² - YW²) = √(68² - 32²) = 60

⇒ EY = 60

As WX is the perpendicular bisector of DF, then DW = FW

As FW = 68, then DW = 68

As WZ is the perpendicular bisector of DE, then DZ = EZ = 64

Therefore, DE = DZ + EZ = 64 + 64 = 128

8 0
3 years ago
What is the slope of y= -7/5x +4
dem82 [27]
Y= -7/5x + 4

To find -intercept/zero, substitute

Multiply both sides of the equation by

0= -7/5x +4

Move the variable to the left-hand side and change its sign

0= -7x +20

Divide both sides of the equation by

7x=20
20/7 = 2 6/7 = x 2.857
6 0
3 years ago
Read 2 more answers
Eric bought a rectangular piece of cardboard with area 150 square inches to prepare a chart. Later, Eric’s teacher suggested tha
telo118 [61]

Answer:

C. 600

Step-by-step explanation:

Prime Example[s]:

2[1]2[150] → [2][300] >> 600

2[5]2[30] → [10][60] >> 600

I am joyous to assist you anytime.

3 0
3 years ago
Given the equation 8x = 4y + 16, generate a plan to rewrite it in slope intercept form. Which variable do you solve for?
andre [41]

Answer:

y = 2x-4

Step-by-step explanation:

To put the equation in slope intercept form (y=mx+b), we solve the equation for y

8x = 4y +16

Subtract 16 from each side

8x - 16 = 4y+16-16

8x-16 = 4y

Divide each side by 4

8x/4 -16/4 = 4y/4

2x -4 = y

y = 2x-4

4 0
4 years ago
Read 2 more answers
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