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Rom4ik [11]
2 years ago
14

I need to know which one is wrong

Mathematics
1 answer:
Svetllana [295]2 years ago
3 0
The incorrect answer is #5
-11.8+9.8= -2.0 or -2
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I need help its for 7th grade math​
Oliga [24]

Answer:

4:20

Step-by-step explanation:

because there are 20 teachers in all and 4 science teachers so your chances of getting a science teacher are 4 out of 20

5 0
2 years ago
Cameron earns $7 per hour. How much does he earn in 5 hours
ANEK [815]
All you have to do is multiply both
5 0
3 years ago
22<br> Solve for x.<br> 3x - 5 = 10<br> x equals.....<br> help
kramer

Answer:

x = 5

Step-by-step explanation:

3x - 5 = 10

We want to isolate the x.

3x - 5 = 10\\+5\;\;\;\;\;\;\;\;\;         +5

3x = 15

Now, we want the x not to have a coefficient. We want it just to be x =. We will do this via inverse operations. Since 3 x is 3 multiplied by x, we will divide each side by 3.

\frac{3x}{3} \;=\;\frac{15}{3}

x = 5

~InLoveWithPugs

Moderator\\Math \ Enthusiast

7 0
2 years ago
While preparing for a party, Luis spent 25 minutes blowing up 10 balloons. Write an equation to express how many minutes it took
vodomira [7]

m= 2.5x is the equation you want to use, hope this helped! <3


8 0
2 years ago
Read 2 more answers
The Crayola crayon company can make 2400 crayons in 4 minutes. How many crayons can they make in 15 minutes? Solve this problem
densk [106]
So, The Crayola Crayon company can make 2400 crayons in 4 minutes. In other words, every 4 minutes they can make 2400 crayons, right? So, in 15 minutes how many would they have made? Well, what we do is we divide 15 by 4 which is 3.75. Then we multiply the result, 3.75, by 2400. 3.75 * 9000. So, in 15 minutes, Crayola  would have made 900 crayons!

4/2400 = 15/x

Step 1: Cross Multiply

4/2400 = 15/x

4 * x = (15) * (2400)

4x = 36000

Step 2: Divide both sides by 2

4x/4 = 36000/2

x = 9000

The answer is, 9000!!! :D
4 0
3 years ago
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