3 years ago

Please help! What number is 70% of 200. Please show all your work. I will mark you as brainliest.

1 answer:

5 0

200/x=100/70
(200/x)*x=(100/70)*x multiply both sides of the equation by x
200=1.42857142857*x divide both sides of the equation by (1.42857142857) to get x
200/1.42857142857=x 
140=x 
x=140

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lynn, jude and anne were given the function f(x)=-2x^2+32, and they were asked to find f(3). lynns answer was 14, judes answer w

AfilCa [17]

The only thing we need to here to find who is correct is evaluate the function $f(x)=-2 x^{2} +32$ at $x=3$ . To do that we are going to replace $x$ with $3$ in the function:
$f(x)=-2 x^{2} +32$
$f(3)=-2 (3)^{2} +32$
$f(3)=-2 (9) +32$
$f(3)=-18+32$
$f(3)=14$

We can conclude that Lynn is correct. $f(3)$ is indeed 14.

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3 years ago

A middle school has 470 students. Regina surveys a random sample of 40 students and finds that 28 have cell phones. How many stu

Dmitry [639]

So from that i think the formula would be
$\frac{x}{470} = \frac{28}{40}$
so then you find "x" by multiplying 470 x 28 which equals 13,160. Then you divide 13,160 by 40 which equals 329.
X=329
329 students are likely to have phones

4 0

3 years ago

Read 2 more answers

There are 76,000 acres of state Parkland in Georgia this is 4000 acres more than three times the number of acres of state Parkla

pashok25 [27]

Answer:

There are 240,000 acres of the state parkland in Mississippi.

Step-by-step explanation:

Let a= Mississippi's parkland acres

You can use either Distributive Property, or The Order of Operations.

Distributive Property:

(76,000+4,000) 3= a

228,000+12,000= a

240,000= a

Order of Operations:

(76,000+4,000) 3= a

(80,000) 3= a

240,000= a

7 0

2 years ago

Please helphelp

Rina8888 [55]

The answer would be A.

4 0

3 years ago

Pls pls help me I will mark you brainest

Ann [662]

Answer:

130

Step-by-step explanation:

10+10+5+5=30

50+50=100

30+100=130

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3 years ago