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Dafna11 [192]
3 years ago
6

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

Mathematics
1 answer:
iren [92.7K]3 years ago
5 0
200/x=100/70
<span>(200/x)*x=(100/70)*x       </span>multiply both sides of the equation by x
<span>200=1.42857142857*x       </span>divide both sides of the equation by (1.42857142857) to get x
<span>200/1.42857142857=x </span>
<span>140=x </span>
<span>x=140</span>
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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.
6 0
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

5 0
3 years ago
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