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Stels [109]
3 years ago
6

Evaluate 1/2m - 2/3n when m = 3 and n = 8.

Mathematics
1 answer:
Anika [276]3 years ago
7 0

Answer:

1/2(3)-2/3(8)

3/2-9/3

<u>3</u>-<u>9</u>

2.3

<u>9</u><u>-</u><u>3</u><u>2</u>

6

<u>-23</u>

6

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5.<br>Find the sum of all two - digit natural numbers which are divisible by 3.​
kykrilka [37]

Answer:

1665

Step-by-step explanation:

This is AP, where:

  • First term is: 12= 3*4
  • Last term is: 99= 3*33
  • Common difference is: 3
  • Number of terms is: 33- 3= 30 (because the 4th term is included)
  • S=1/2*30(12+99)= 1665

The sum of all two - digit natural numbers which are divisible by 3 is 1665

3 0
3 years ago
You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants?
OverLord2011 [107]
Question that needs to be solved:You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants?=> 4 gallons is to 30 plants.=> 4 gallons / 30 plants = 0.13 gallons per plants.Now, it needs to water around 45 plants, let us solve how much will it need => 0.13 gallons * 45 plants = 6 gallons<span>Thus, to water 45 plants you need to have 6 gallons of water</span>
5 0
3 years ago
Find the slope of (-9,18),(-13,5)
Jet001 [13]

Answer:

3.25

Step-by-step explanation:

The slope formula is slope = y2 - y1 / x2 - x1 and the variables are found by assigning them with their corresponding values. Here, x1 = -9, x2 = -13, y1 = 18, and y2 = 5. Next, substitute these values in and get 5 - 18 / -13 - (-9). This can fully simplify to 13 / 4 or 3.25.

6 0
3 years ago
400 ml squash is made by mixing 50 ml of cordial with water. what fraction of the drink is water?give your answer in its simples
Tasya [4]

squash = cordial + water

400 ml = 50 ml + x ml

350 ml = x ml

Therefore, 350 ml are water.

350 ml / 400 ml = 0.875 = \frac{350}{400} = \frac{35}{40} = \frac{7}{8}

So the answer is 7 / 8

5 0
3 years ago
Which equation has 2 solutions?
WARRIOR [948]

Answer:Umm you can do ratios if you learned it or you can times it

Step-by-step explanation:

Hope this helps

7 0
2 years ago
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