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Leona [35]
3 years ago
14

Help please loves!!!! I'm horrible at math!!!

Mathematics
2 answers:
yan [13]3 years ago
6 0
There are no real solutions.

if you subtract 20 from both sides, you get
x² = -16

You cannot find the square root of a negative number without using i, so there are no real number solutions.
ss7ja [257]3 years ago
6 0
The correct answer is D
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When you run, your average step length is 42 inches. How many steps would you have to take to run 1 mile (5,280 feet)? Round to
bezimeni [28]
First convert 5,280 ft. into inches.
5280 \times 12 = 63360
5280 ft. equals 63360 inches.

Then you divide that by 42
63360 \div 42 = 1508.57
If you're rounding to the nearest step then it would take 1509 steps to run 1 mile.
6 0
3 years ago
What is the total cost of a $12.49 item with a sales tax of 5%?
Ivan

Answer: $13.11

Step-by-step explanation:

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There are 7 animals a farmer's field.
sergey [27]

Answer:

2 cows and 5 chickens.

Step-by-step explanation:

NOTE: This will be solved using simultaneous equations.

Let x = cows and y = chickens

1. form two equations

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x + y = 7 .... (2)

2. make y (or x) the subject of one equation

x + y = 7

y = 7 - x ... (3)

3. Substitute (3) into (1)

4x + 2( 7 - x) = 18

4. solve for x

4x + 14 - 2x = 18

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6 0
3 years ago
What does 9n-2<7+20 equal?​
ikadub [295]

Answer:

n

n ≈ 3

Step-by-step explanation:

9n-2<7+20

9n-2

4 0
3 years ago
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