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Alex Ar [27]
3 years ago
11

Twice the sum of a number and seven is eight find the number

Mathematics
1 answer:
pickupchik [31]3 years ago
7 0
<span>twice the sum of a number and seven is 8
2(x+7)=8</span>
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If I Row my canoe at 5 mph and I travel upstream at 3 mph, how fast will I be traveling downstream if I am rowing at the same ra
Assoli18 [71]
Is the same as the one you just did.

keep in mind that, going against the current, the current's speed erodes speed from your regular speed, whilst if you're going with the current, the current's speed adds to it.

now, in this case, you row 5mph, going upstream you're only doing 3mph, whatever happened to the other 2mph?  well, the current speed eroded them, meaning the speed of the river is 2mph.

now, going downstream with the current, your regular speed is 5mph, and the current is 2mph, since the current adds to yours, then you're going 5 + 2, mph.
5 0
3 years ago
A colored chip is yellow on one side and red on the other. The chip was flipped 50 times and landed red side facing up 21 times.
faust18 [17]
42%

You have essentially a fraction, 21/50, which gives you a decimal of 0.42, or 42%.

(Flipped a total of 50 times, of those, it landed red side up 21 times, so 21/50)
8 0
3 years ago
You take out a cash advance of $2,790.00 on a credit card with a 3.5% cash advance fee and a 13.5% APR. What is the amount due b
nadya68 [22]
The first thing to consider is that when computing the APR for one month you must divide the interest rate by 12 since the 13.5% is based annually. 13.5% is equivalent to .135 in decimal form. But then when we divide it by 12 we get, (.135)/12 = .01125 which is your monthly interest rate versus your annual one. When multiplied by the amount of the cash advance you come up with the following fee:  (principle)(monthly int. rate) = total interest charged for month    ($2,790)(.01125)             = $31.3875 The next thing to consider is the additional charge of the 3.5%. This is equivalent to .035 in decimal form. When multiplied by the amount of the cash advance you come up with the following fee: (principle)(advance int. fee) = total cash advance fee    ($2790)(.035)                 = $97.65  So the total amount due at the end of the month would be $2790 + $31.39 + $97.65 = $2919.04 after interest rates and the additional fee gets applied. 
5 0
3 years ago
Read 2 more answers
Subtact: (7x + 5) - (3x + 2)​
-Dominant- [34]

Answer:

4x+3

Step-by-step explanation:

subtract 7-3 =4 then you subtract 5-2=3. put it together 4x+3

5 0
3 years ago
Read 2 more answers
Jose paid $36.40 for 4 movie tickets. Each ticket costs the same amount. What was the cost of the movie tickets in dollars and c
Keith_Richards [23]

Answer:

$9.10

Step-by-step explanation:

Jose paid $36.40 <em>in total </em> for 4 movie tickets.

Divide $36.40 with 4

36.40/4 = 9.1

$9.10 is the cost of one movie ticket.

~

7 0
3 years ago
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