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Anastasy [175]
2 years ago
7

Half a number x is 18

Mathematics
2 answers:
LuckyWell [14K]2 years ago
7 0

Answer:

36

Step-by-step explanation:

bc half of 36 is 18.

brilliants [131]2 years ago
4 0
36. Half of x is also x divided by 2. If x divided by 2 is 18 than 18 times 2 is x.

Hope this helped:)
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What is 1 3/4 gallons, in quarts?
Serggg [28]

Answer:  7 Courts

Step-by-step explanation: One US gallon equals for US courts, so 1 3/4 x 4 is seven

5 0
3 years ago
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Just find the figure of the rectangle plss
AnnZ [28]

Answer:

x= 21

y= 3

z= 21

Step-by-step explanation:

Let the center be O,

=> Triangle AOD is an Isosceles triangle so AO≅DO, "21 = x"

=> Line AC is divided in two equal parts by the center so if AO= 21 then

    7y = 21, and thus "y = 3"

=> BOC is also an Isosceles triangle so CO ≅ BO, if CO = 21 (7y → 7*3) then so will be BO. Therefore "z = 21"

4 0
3 years ago
If y=a sin 3x+ b cos 3x and <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bd%5E%7B2%7D%20y%20%7D%7Bdx%5E%7B2%7D%20%7D" id="TexFormu
Black_prince [1.1K]

Step-by-step explanation:

You have to do first and second derivatives :

y = a sin 3x + b cos 3x

dy/dx = 3a cos 3x - 3b sin 3x

d²y/dx² = - 9a sin 3x - 9b cos 3x

Next, you have to compare it :

let d²y/dx² = ky,

-9a sin 3x - 9b cos 3x = k(a sin 3x + b cos 3x)

-9(a sin 3x + b cos 3x) = k(a sin 3x + b cos 3x)

Therefore, k is equals to 9.

3 0
2 years ago
A tree is 4 meters tall. About how tall is the tree in feet (ft)? (1 meter is approximately 39 inches.) A) 156 ft B) 15.5 ft C)
tiny-mole [99]
12in=1ft
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8 0
3 years ago
Read 2 more answers
Chip and dale are driving in a toy engine around the Christmas tree at a speed of 300 miles/hour. how many minutes will it take
Deffense [45]

Using proportions, it is found that it will take them 0.00248548 minutes to do one loop.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, according to their speed, in 60 minutes, they drive 300 miles. In how many minutes will they drive 20 m = 0,0124274 miles?

The <em>rule of three</em> is:

60 min - 300 miles

x min - 0.0124274 miles

Applying cross multiplication:

300x = 60 \times 0.0124274

x = \frac{60 \times 0.0124274}{300}

x = 0.00248548

It will take them 0.00248548 minutes to do one loop.

More can be learned about proportions at brainly.com/question/24372153

7 0
2 years ago
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