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sesenic [268]
3 years ago
6

The question is

Mathematics
2 answers:
Olin [163]3 years ago
4 0

To estimate round each number to the closest whole number

7.8 would round to 8

307 would round to 300

8 x 300 = 2400

The answer would be c 2400

svet-max [94.6K]3 years ago
4 0

Answer:

C.2400

Step-by-step explanation:

~To estimate you would have to first do 7.8 × 307 which equals 2394.6.

~Then you would look at the answer choices and since 2400 is the closest the answer would be C.

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A mathematical formula designed to predict population fluctuations in a community could be called a(an)
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It would be called an ecological model.
5 0
3 years ago
Select all the fractions that are equivalent to each other.
pogonyaev
1/4
2/8
4/16
3/12

u can convert fractions into percents by multiplying the first number by the second. hope this helped:))
4 0
3 years ago
Read 2 more answers
The sum of two numbers is 39 and the difference is 3. What are the numbers?
frosja888 [35]

Answer: 21 & 18

Step-by-step explanation:

Sum of two numbers is 39

Difference is 3

Let the numbers be x & y

X+y=39........equation 1

X-y=3...........equation 2

X=3+y............equation 3

Substitute equation 3 into equation 1

(3+y)+y=39

3+y+y=39

3+2y=39

2y=39-3

2y=36

Y=36/2

Y=18

Substitute for y in equation 2

X-y=3

X-18=3

X=3+18

X=21

The two numbers are 21 & 18

8 0
3 years ago
F(x) =x^2+6x and g(x)=7-x find (f-g)(x) and (f-g)(9)
liq [111]
(f-g)(x) = x²+6x - (7-x)
(f-g)(x) = x² + 6x - 7 + x
(f-g)(x) = x² + 7x - 7

(f-g)(9) = 9² + 7*9 - 7
(f-g)(9) = 81 + 63 - 7
(f-g)(9) = 137
8 0
3 years ago
An 8×8×8 cm cube was painted red, and then broken up into small cubes with side lengths of 1 cm. How many small cubes have none
Alona [7]

Answer:

216

Step-by-step explanation:

If you just paint the surface of the cube, then the inside of the cube would not have any of their faces painted red.

Just looking at the cube from a side view, you would realize that there would be a smaller cube, 6 x 6 x 6 (not 7 since you have to account for both the top side and the bottom side), and so that is the answer, 6 ^ 3, which is 216.

8 0
3 years ago
Read 2 more answers
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