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boyakko [2]
2 years ago
8

HELP!

Mathematics
1 answer:
RoseWind [281]2 years ago
3 0
The answer is B jsjd
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The chance of getting heads two times in row when flipping a standard coin twice?
kenny6666 [7]

Answer:

12.5%

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
(5x + 7)(5x – 7)<br> Foil method
Pavlova-9 [17]

Answer:

25x-49

Step-by-step explanation:

5x×5x=25x 5x×-7= -35x

7×5x=35x 7×-7=-49

(combine like terms)25x+-35x+35x= 25

hope that helped you!

6 0
3 years ago
Simplify 4 1/2 x 2 3/5<br> 8 3/7<br> 117/7<br> 8 3/10<br> 11 7/10
Lynna [10]

Answer:

\frac{27}{5}  = 5 \frac{2}{5}

Step-by-step explanation:

4 1/2 × 2 3/5

9/2 × 2 × 3/5

9 × 3/5

<u>=</u><u> </u><u>2</u><u>7</u><u>/</u><u>5</u><u> </u><u>=</u><u> </u><u>5</u><u> </u><u>2</u><u>/</u><u>5</u>

8 0
3 years ago
Evaluate 4+8 divide by 2 x(6-3)
stepladder [879]

Answer:

2

Step-by-step explanation:

= 4+8/2×(6-3)

= 12/2×6-2×3

= 12/12-6

= 12/6

= 2

3 0
3 years ago
A beach has to enclose a rectangular area, because some endangered species are nesting there. They have 200 feet of rope to rope
kkurt [141]
Area is equal to length times width. The perimeter (the amount of rope) has to equal twice the length added to twice the width so we're left with:
A = l * w
200 = 2l + 2w
solve for either l or w
l = 100 - w
plug into the area equation to get one equation with two variables
A = w(100 - w)
A = -w^2 + 100w
take the derivative
A' = -2w + 100
set the derivative equal to zero
0 = -2w + 100
2w = 100
w = 50
This is the width that maximizes the area
with a width of 50, the length must also be 50 to have a perimeter of 200
therefore, they can rope up to 50 * 50 = 2500 ft^2
6 0
3 years ago
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