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inessss [21]
4 years ago
14

According to ties study guidelines how many minutes of science reading should he do if it's science class is 90 minutes long 20

minutes for every 60 minutes of class time
Mathematics
1 answer:
valentina_108 [34]4 years ago
8 0
You would have to have 20 minutes of studying per hour of class time. This means that 60 times 2=120. 120-90=30. 30 minutes is half an hour. So you would do 20 divided by 2 since u are adding another half hour to studying. You would add 60 and 10 to get 70 as your answer I think. I hope this helps and is correct :)
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salantis [7]

Answer: a. x=4 b. x=17.5

Step-by-step explanation:

a. 5x/2+1=11

subtract 1 from both sides : 5x/2=10

multiply both sides by 2 : 5x=20

divide both sides by 4 : x=4

b. 2x/7-3=2

add 3 to both sides : 2x/7=5

multiply both sides by 7 : 2x=35

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8 0
3 years ago
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Norma-Jean [14]
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3 years ago
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denis23 [38]

Answer: 42.21 km

Step-by-step explanation:

We can solve this using trigonometry, since we have the following data:

\theta=32.5\° is the the angle of elevation

d=35.6 km is the horizontal distance between the plane and the radar station

x is the hypotenuse of the right triangle formed between the radar station and the airplane

Now, the trigonometric function that will be used is <u>cosine</u>:

cos\theta=\frac{d}{x} because d is the adjacent side of the right triangle

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Finding x:

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4 0
4 years ago
Value of x for 12(x-2)+3x=1/2(x+6)+2​
Damm [24]

Answer:

The value of x = 2

Step-by-step explanation:

Given the equation

12\left(x-2\right)+3x=\frac{1}{2}\left(x+6\right)+2

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so the equation becomes

12x-24+3x=\frac{1}{2}x+3+2

simplifying

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15x=\frac{1}{2}x+29

multiplying both sides by 2

30x = x + 58

subtracting x from both sides

30x - x = 58 - x

29x = 58

divide both sides by 29

\frac{29x}{29}=\frac{58}{29}

simplifying

x = 2

Therefore, the value of x = 2

4 0
3 years ago
a paint mixture contains 32 gallons of base for every gallon of color. In 924 gallons of paint, how many gallons of color are th
expeople1 [14]
<span>base and color are in a ratio of 32:1, where color is "x"
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x = 28 (gallons of color)</span>
8 0
3 years ago
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