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2 years ago

Can someone please answer this question and please answer it correctly please show work please i need it please help

Mathematics

1 answer:

serg [7]2 years ago

3 0

Answer:

14. 1 inch = 96 miles (12 × 8)

1/2 inch = 48 miles (96 ÷ 2)

96 + 48 = 144 miles

3 3/4 = 3.75

144 ÷ 3.75 = 38.4

A. 38.4 mph

15. Adding a negative number is the same as just subtracting.

D. 35(2) - 1/2(15)

20. - = withdrew because you are subtracting

+ = deposited because you are adding

D. Peter withdrew $47.27 and deposited $598, increasing his bank account by $550.73

21. Yana: 7 - 3 + 6 - 1 + 8 - 2 = 15

15 ÷ 6 = 2.5 average

Amber: 1 + 5 - 2 + 4 - 2 + 6 = 12

12 ÷ 6 = 2 average

2.5 - 2 = 0.5

A. Yana's average number of points is 0.5 point greater than Amber's

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The difference between the roots of the quadratic equation x2 -14x +q =0 is 6. Find q

Irina-Kira [14]

9514 1404 393

Answer:

q = 40

Step-by-step explanation:

When the quadratic has roots p and r, it can be factored as ...

(x -p)(x -r) = x² -(p+r)x +pr

So, the sum of the roots is 14, and their difference is 6. This lets us find the roots from ...

p + r = 14

p - r = 6

2p = 20 . . . add the two equations

p = 10

r = 14 -p = 4

The value of interest is then ...

q = pr = (10)(4)

q = 40

The graph shows the roots to be 4 and 10, as we found.

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2 years ago

How can you use rates of change to solve a real-life problem like the excessive emission of CO2 in the air? Answer using correct

Norma-Jean [14]

Answer:

rate of change can be used in a real life problem such as the rate that a pool fills up with water.

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1 year ago

In one jar, I have two balls labelled 1 and 2 respectively. In a second jar, I have three balls labelled 0, 1 and 2 respectively

PolarNik [594]

Step-by-step explanation:

this is a kind of trick question, actually.

with whatever we draw, we produce X values as power of 3.

to be precise, we can have only

3⁰ = 1

3¹ = 3

3² = 9

3⁴ = 81

due to the possible combinations of drawn numbers (e.g. 3 cannot be created by a multiplication of 0s, 1s and 2s).

so, mostly, these results cannot be exact factors of 1024.

1024 cannot be divided by 3, nor by 9 nor by 81.

but 1024 is a multiple of 1 (as is every number).

so, we are looking at the probability to get 0 as multiplication result of the numbers on the 2 drawn balls.

the only possibilities are

1 and 0

2 and 0

out of in total 6 (2×3) different outcomes

1 and 0

1 and 1

1 and 2

2 and 0

2 and 1

2 and 2

the probability of this "0" event is again

number of desired outcomes / number of possible outcomes = 2/6 = 1/3

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Sharon bought about 3.8 pounds

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