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nika2105 [10]
2 years ago
15

Help I need your math skills

Mathematics
1 answer:
Ahat [919]2 years ago
7 0

Answer: <u>1.3 - 0.91 is less than 1.</u>

Step-by-step explanation: 1.3 - 0.91 is less than 1 because 0.91 is close to the whole number 1. So the difference is 0.39.

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A sample of lake water contains 150grams of salt. If 30% of the water sample is salt, find the number of grams the entire sample
hjlf

Answer:

500 grams

Step-by-step explanation:

Let's say that the total number of grams of the sample is x. We know that 30% of x is salt and we also know this quantity is 150 grams. So, we can write this as:

30% * x = 150

Remember that % is simply "out of 100", so 30% = 30/100 = 0.30. Then:

0.30 * x = 150

Divide both sides by 0.30:

x = 500 grams

Hope this helps!

5 0
3 years ago
How is 3*7 and 6*7 related
coldgirl [10]

Answer:

3*7=21

6*7=42

so 3*7 is 1/2 of 6*7

Step-by-step explanation:

6 0
3 years ago
Suppose an angle α is drawn in standard position. In each case, use the information to determine what quadrant α is in.
cupoosta [38]
Since <span> sin(α) > 0 and cos(α) > 0
so </span><span>α is IN THE FIRST QUADRANT  (I)</span>
4 0
3 years ago
-6 + x = -2<br><br><br> Thank you
marishachu [46]

Answer:

4 because I know it's right

8 0
3 years ago
One plane can travel 30 miles per hour faster than another. one of them goes 185 miles in the same time it takes the other to go
ycow [4]
Plane #1 speed:  x mph
Plane #2 speed:  (x+30) mph

time = time becomes

170 mi        185 mi
---------- = --------------
      x             x+30

Solving for x, the speed of the slower plane, we get

170x + 5100 = 185 x
                                           5100
Then 15x = 5100, and x = ---------- (mi/hr) = 340 mph
                                              15

The slower plane flies at 340 mph, and the faster one at 370 mph.
6 0
3 years ago
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