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2 years ago

9

Sometimes mya might want to see information on only specific slices. rather than creating a new chart that includes only those s

elections, she can _____ an existing chart.

1 answer:

ollegr [7]2 years ago

3 0

Create.........................

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Someone please explain this step by step:

Volgvan

Answer:

13

Step-by-step explanation:

Perhaps the most straightforward way to find the value of the given function is to first solve the equations for x and y. The results can be substituted into your expression to find the value you want.

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<h3>solving the system</h3>

We notice the y-coefficients are opposites, so we can eliminate the y-variable by adding the equations.

(2x -y) +(x +y) = (3) +(1)

3x = 4 . . . . . . simplify

x = 4/3 . . . . . divide by 3

The value of y can be found from the second equation:

4/3 +y = 1 . . . . substitute for x

y = -1/3 . . . . . . subtract 4/3

<h3>expression value</h3>

The value of 8x-7y is found by substituting the x- and y-values into this expression:

8(4/3) -7(-1/3) = 32/3 +7/3 = 39/3 = 13

The value of 8x-7y is 13.

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<em>Additional comment</em>

You can also work out what combination of the two equations will give 8x -7y. That turns out to be 5 times the first minus 2 times the second:

5(2x -y) -2(x +y) = 5(3) -2(1)

10x -5y -2x -2y = 15 -2

8x -7y = 13

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The coefficients 5 and -2 are found by solving the system of equations ...

a(2x -y) +b(x +y) ≡ 8x -7y ⇒ {2a +b = 8, -a +b = -7}

3 0

1 year ago

Find the values of x and y.

nirvana33 [79]

Answer:

x=15.75 y=59

Step-by-step explanation:

In total there is 360 degrees. We know y is 59 so we will replace it with that.

59+59=118. 360-118=242. 242/2=121. 29+29=58. So we can subtract that to equal 63. Now 63=4x. We can divide so 2x=31.5. x=15.75.

Therefore, 15.75=x and 59=y

I hope this helped ^^.

6 0

2 years ago

Read 2 more answers

we do is hiking along a trail that is 13.7 miles long. so far she has hide along 1/10 of the trail. how far has Rita hiked.

Westkost [7]

13.7*1/10=1.37 So far she has hiked 1.37 miles.

5 0

2 years ago

Daniel is a famous music composer and he composed 8 songs last month. This month he composed 10 songs. What was the percent incr

Musya8 [376]

Answer:

The selection was made by a 10-strong jury instead of the former public vote, which ... a capacity of 12 musicians ;ind is equipped with a Scully 8-track tape recorder ... a $6 million turnover in 1972. a 40 percent increase on figures

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Two numbers whose sum is 29 and their difference is 15

n200080 [17]

Answer:

22 and 7

Step-by-step explanation:

Let x and y be the two numbers we are looking for:

The statement “their sum is 29” means x + y = 29

The statement “their difference is 15” means x - y = 15

we get this system:

x + y = 29 (1)

x - y = 15 (2)

Let’s solve it :

(1) + (2) ⇒ x + y + x - y = 29 + 15 ⇒ 2x = 44 ⇒ x = 44/2 = 22

Now we replace x by 22 in equation (1) :

22 + y = 29 ⇒ y = 29 - 22 = 7

6 0

1 year ago