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kaheart [24]
3 years ago
10

Which of the following is the best estimate for 31% of 9? *GIVING 99 Points!*

Mathematics
2 answers:
Marina CMI [18]3 years ago
5 0
Hello! So, when you know your fractions and percents, you know that about 33% equals 1/3. 31 is close to 33, so the best estimate for 31% of 9 is 3. When you solve it on a calculator, 9 * 31% (0.31) is 2.79, which rounds off to 3 when rounded to the nearest whole number. The answer is B: 3.
Verizon [17]3 years ago
4 0
Hi!

9 * 31% = 2.79

2.79 is closest to 3, so the best estimate for 31% of 9 is 3! =)
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TWO QUESTIONS PLS HELP ASAP
ASHA 777 [7]
Answer: 4. (-1,-1) 3. (3,-2)

4)

Set the equations equal to each other.

4x+3=-x-2

Subtract 3 from both sides

4x=-x-5

Add x to both sides

5x=-5

Divide both sides by 5

x=-1

Next, replace x with -1 in either equation to find y.

-(-1)-2=y

-1=y


3)

Do the same thing for this one and set them equal to each other

-2x+4=-1/3x-1

Add 1 to both sides

-2x+5=-1/3x

Add 2x to both sides

5=5/3x

Divide both sides by 5/3

x=3

Next, replace x with 3 in either equation

-2(3)+4=y

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4 0
3 years ago
The product of two numbers is 4 2/9, if one of the number is 38, find the number
o-na [289]

Answer:

hope its correct and does helps u

3 0
3 years ago
Factor this trinomial <br> 6x^2+23x+7
zhuklara [117]
(3x + 1) (2x + 7)

Factored by grouping
3 0
3 years ago
A center has a center at X(4, -3) and a point on the circle is W(8, 0). What is the location of Y on the diameter WY?
igor_vitrenko [27]

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7 0
2 years ago
One hamburger and one coke cost $3.20. Three hamburgers and one coke cost $8.00. Find the cost of one hamburger.
Varvara68 [4.7K]

Answer:

$0.80

Step-by-step explanation:

-3 (1x + 1y = 3.2)

3x + 1y = 8

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

-3x - 3y = -9.6

+

3x + 1 y = 8

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

0x -2y = -1.6

÷ -2

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

y = 0.8

one hamburger costs $0.80

5 0
3 years ago
Read 2 more answers
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