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Solnce55 [7]
3 years ago
5

BRO I NEED HELP!!!!

Mathematics
1 answer:
Novosadov [1.4K]3 years ago
7 0
Let A represent the speed of car A. Using your formula,
.. A*2 = D
.. (A +15)*1.5 = D . . . . . the same distance in a shorter time at a higher speed

Equating the two expressions for D, we get
.. 2A = 1.5(A +15)
.. 2A = 1.5A +22.5 . . . . . eliminate parentheses
.. 0.5A = 22.5 . . . . . . . . .subtract 1.5A
.. A = 22.5/0.5 = 45 . . . .divide by 0.5
Car B was 15 mph faster than this.

Car B traveled at 60 miles per hour.
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A company invests $15,000.00 in an account that compounds interest annually. After two years, the account is worth $16,099.44. U
ANEK [815]
Principal = $15000
Amount = $16099.44
Rat of interest = r
Time = 2 years
Then
A = P(1 + r)^t
16099.44 = 15000 (1 + r)^2
(1 + r)^2 = 1.073
(1 + r)^2 = (1.036)^2
Then
1 + r = 1.036
r = 1.036 - 1
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6 0
3 years ago
Find the value of x so that (x,-4) is on the line given by -2x + 3y = 6.
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Answer:

Step-by-step explanation:

-2x + 3y = 6.....(x, -4)...so y = -4

-2x + 3(-4) = 6

-2x - 12 = 6

-2x = 6 + 12

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x = -18/2

x = -9

so the value of x is -9.....(-9,-4)

6 0
3 years ago
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8 0
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5. What is the value of the expression [(29 + 18) +<br>(17 - 8)] = 8?<br>S​
Vladimir [108]

Answer:

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Step-by-step explanation:

6 0
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poizon [28]

Answer:

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Step-by-step explanation:

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2 years ago
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