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3 years ago

5

Simplify the equation by combining like terms. 2x + 2x – 4y- y = 4x + [? ]y

1 answer:

Sholpan [36]3 years ago

6 0

Answer:

4x+(-5y)

Step-by-step explanation:

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Mhanifa please help! Find the missing side. Round to the nearest tenth

forsale [732]

Answer:

12) x = 49.5

13) x = 8.5

14) x = 44.8

15) x = 4.6

Step-by-step explanation:

We can solve for the missing side lengths using trigonometry

Remember these are the trigonometric ratios

Sin = Opposite over Hypotenuse

Cos = Adjacent over Hypotenuse

Tan = Opposite over Adjacent

For #12

We can use trig ratio tangent as we are given an angle with a measure of 68° and its adjacent side length and we need to find the opposite side length. When dealing with opposite and adjacent we can use tan.

That being said we want to create an equation to solve for x

$tan(68)=\frac{x}{20}$

Now we solve

* multiply each side by 20 *

$20tan(68) = 49.5\\\frac{x}{20} 20=x\\$

we're left with x = 49.5

It seems that all of the problems are dealing with an angle, its opposite side and its adjacent side. So we will use the same trig ratio "tan" and process to solve for x.

For 13)

$tan(62)=\frac{16}{x} \\$

*multiply each side by x*

$xtan(62)=16$

*divide each side by tan(62)

$\frac{xtan(62)}{tan(62)} =x\\\frac{16}{tan(62)} =8.5$

we're left with x = 6.5

For 14)

$tan(15)=\frac{12}{x}$

multiply each side by x

$xtan(15)=12$

divide each side by tan15

$\frac{xtan(15)}{tan(15)} =x\\\frac{12}{tan(15)} =44.8$

we're left with x = 44.8

For 15)

$tan(74)=\frac{16}{x}$

multiply each side by x

$xtan(74)=16$

divide each side by tan(74)

$\frac{xtan(74)}{tan74} =x\\\frac{16}{tan(74)} =4.6$

we're left with x = 4.6

6 0

3 years ago

You make $30 in 2 1/2 hours of work how much do you make in 1 hour

Gnesinka [82]

Answer:14.6341463415

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Write 10 feet and 6 yards as a fraction in simplest form

Inessa [10]

1 yard is 3 feet
4 yards is 12 feet
so 6' to 12' is 6/12
<span>or 1/2</span>

3 0

4 years ago

Jackson pays $18 per month for his phone service, plus $0.07 for each long distance minute used. Which of the following correctl

nata0808 [166]

Answer:

y intercept is 18

Step-by-step explanation:

It is given that

Monthly rent for phone service = $18

charges for each long distance minute = $ 0.07

Let us assume number of minutes used = x

also let us represent total cost by y

So the total cost = ( charges per minute )(number of minutes) + monthly rent

$y= 0.07x+18$

now we compare this equation with y=mx+b

where m is the slope and b is y intercept

so we have b= 18

hence y intercept is 18

4 0

4 years ago

If two marbles are selected in succession with replacement, find the probability that both marble is blue.

AlladinOne [14]

Answer:

1 / 9

Step-by-step explanation:

Choosing with replacement means that the first draw from the lot is replaced before another is picked '.

Number of Blue marbles = 2

Number of red marbles = 4

Total number of marbles = (2 + 4) = 6

Probability = required outcome / Total possible outcomes

1st draw :

Probability of picking blue = 2 / 6 = 1 /3

2nd draw :

Probability of picking blue = 2 / 6 = 1/3

P(1st draw) * P(2nd draw)

1/3 * 1/3 = 1/9

8 0

3 years ago