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masya89 [10]
2 years ago
5

Seven more than twice a number is equal to 25. Which of the following is the number? Use

Mathematics
2 answers:
prisoha [69]2 years ago
5 0

Answer:

9

Step-by-step explanation:

9+9=18 18-9=9 9×2=18 18÷9=2 18÷2=9

Snowcat [4.5K]2 years ago
4 0

Answer:

the answer is 9

Step-by-step explanation:

when doubled 9 is 18

18+7=25

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Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 o
True [87]

Answer:

Approximately 45% students signed up for neither canoeing or trekking.

Step-by-step explanation:

First we subtract the number of the students who signed up from the number of the total students to find the number of the students who did not signed up for either.

But there are 13 students who signed up canoeing and also for trekking.

Hence the number of students they signed up for activity is

72 + 23 - 13 = 82

And the number of students they not signed up for any activity is

150 - 82 = 68

so 68 students signed up neither for trekking nor canoeing. The percentage of those students are :

\frac{68}{150} × 100 = 45.3333%

Approximately 45% students signed up for neither canoeing or trekking.

8 0
3 years ago
A penny weighs about 0.1 oz. how much is a pound of pennies worth
Lelu [443]
<span>1.       </span><span>A penny weighs about 0.1 oz.
Now, we need to find the weights of pennies in pounds
=> always remember that in every 1 oz, there is 0.0625 pounds.
Since 0.1 is 1/10 of 1 oz, we need to find the value of it in pounds.
=>  0.0625 pounds / 10
=> 0.0625 pounds.
Therefore, in 0.1 oz of  penny is equivalent to 0.00625 pounds.
In problem like this, before determining the answer, you need to make sure that both unit of measurements are the same. If not, then try to convert.</span>



7 0
3 years ago
The sum of the two digit number is 12. If the digit are revesed, then the new number is 18 less than the originaol muber that is
FromTheMoon [43]

Answer:

A) X + Y = 12

B) 10Y + x = 10x + Y -18

B) 9Y = 9x -18 multiplying A) by -9

A) -9Y = 9x - 72  adding A and B we get

0 = 18x -90

x = 5

The number is 75

Double-Check

7 + 5 = 12

75 -57 = 18





Step-by-step explanation:


6 0
3 years ago
Y varies directly as x y = 120 when x = 8 find y when x = 14
ANTONII [103]

Answer:

y = 120

Step-by-step explanation:

this is the formula

y = kx

now insert the numbers to find k

120 = k8

120/8

k = 15

now insert 15 into the equation where k was

y = 15 x 14

y = 210

3 0
3 years ago
Please the the working. A car bought for $200 and sold for $250, what was the percentage gain of the cost price?
Vesna [10]

9514 1404 393

Answer:

  25%

Step-by-step explanation:

A percentage change is calculated using the formula ...

  pct change = ((new value) - (old value))/(old value) × 100%

For your numbers, this is ...

  pct change = (250 -200)/200 × 100% = 50/200×100% = 25%

The selling price was 25% more than the cost price.

6 0
3 years ago
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