Twice a number x is less than 10

Mathematics

1 answer:

iragen [17]3 years ago

4 0

2x<10. Twenty characters to make the Brainliacs happy.

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What is 1.1 in scientific notation?

kondaur [170]

1,100,000,000 is the answer

4 0

3 years ago

A barrel was 2/3 full of water. After 60 liters were used from the barrel, it was 5/12 full. how much water does the barrel hold

Andrews [41]

Answer: 240 liters

Step-by-step explanation: This means, we start off with (2/3)x liters of water. Then we subtract off 60 of them to get to 5/12 full, meaning we have (5/12)x liters left.

7 0

3 years ago

4x - 7y = 3 <br> x - 7y = 15

charle [14.2K]

$\left \{ {{4x-7y=3} \atop {x-7y=15}} \right. \\\\
 \left \{ {{4x-7y=3} \atop {x=15+7y}} \right. \\\\ substitution\ method\\\\
4*(15+7y)-7y=3\\\\
60+28y-7y=3\\\\
60+21y=3\ \ \ \ | subtract\ \\\\
21y=-57\\\\
y=-\frac{57}{21}=-\frac{19}{7}\\\\
x=15+7*(-\frac{19}{7})=15-19=-4\\\\\ Solution :\ \left \{ {{y=-\frac{19}{7}} \atop {x=-4}} \right.$

5 0

4 years ago

PLEASE HELP ME FFS

AnnZ [28]

Answer:

55.74

Step-by-step explanation:

<em>Since the culture was tested and then the countdown started, you need to multiply the initial value by 3.5. Since it is tested once every 15 minutes, it will be tested two more times by the time 30 minutes is up; a total of 3 times tested.</em>

1.3 x 3.5 = 4.55

4.5 x 3.5 = 15.925

15.925 x 3.5 = 55.7375

7 0

3 years ago

If there are 20 pencils and 5 students write as a ratio for pencils to students in 3 ways below

Anton [14]

20:5
20
--
5

20 of 5
These are the answers to the question

5 0

3 years ago