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frozen [14]
3 years ago
12

Pleaseeeee help ill give brainliest answer if you know itttt

Mathematics
1 answer:
Rzqust [24]3 years ago
7 0

Answer:

S

Step-by-step explanation:

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-1/2 + 1 1/2 + 3 - n
GREYUIT [131]

Answer:

The answer all together would be 5 minus n.

Step-by-step explanation:

a negative and a positive equals a positive so -1/2 + 1 1/2 would equal 2 and 2 + 3 equals 5. Then, the remaining numbers are 5 and n. The final answer is 5 minus n because n is unknown.

4 0
2 years ago
To ___ is to use place value to exchange equal amounts when renaming a number.
Vanyuwa [196]
To regroup is to use place value to exchange equal amount when renaming a number.
6 0
3 years ago
Read 2 more answers
Write the equation of the circle whose center is (-4,8) and has a diameter of 18
svetoff [14.1K]

Answer:

(x + 4)^2 + (y - 8)^2 = 81

or

(x + 4)^2 + (y - 8)^2 = 9^2 depending on how your teacher wants it written.

Step-by-step explanation:

The standard form for a circle is

(x + h)^2 + (y + k)^2 = r^2

r is the radius.

You are given the diameter

r = d/2

r = 18/2

r = 9

So you already have the right hand side of the equation

(x + h)^2 + (y + k)^2 = 9*2

(x + h)^2 + (y + k)^2 = 81

You basically have h and k as well. They come from the center point.

h = 4

k = - 8

So the equation of the circle (and the answer) is

(x + 4)^2 + (y - 8)^2 = 81

One question remains. Why do the x and y values change signs? If you know what the distance formula is, then what you are finding is the distance r of all points on the circle from the center of the circle.

It is the distance formula that is actually the formula for the circle.

6 0
2 years ago
Kendra has a math test every 12 school days and a vocabulary test every 9 school days. She had both a math test and a vocabulary
klasskru [66]
You need the Least Common Multiple of 12 and 9.

That's 36.

3 x 12 = 36
4 x 9 = 36
8 0
2 years ago
Read 2 more answers
A bag contains 6 blue marbles, 9 red marbles, and 5 green marbles. What-
s344n2d4d5 [400]

Answer:

3/10

Step-by-step explanation:

  • total marbles: 6+9+5 = 20
  • blue marbles: 6
  • 6/20 = 3/10
4 0
2 years ago
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