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3 years ago

Find the values of x and y that make k || j and

Mathematics

2 answers:

MArishka [77]3 years ago

6 0

Answer:

x = 80°
y = 130°

Step-by-step explanation:

The interior is a parallelogram when adjacent angles are supplementary. This requires ...

(x -30)° + (x +50)° = 180°

2x + 20 = 180 . . . . . . . . . . . collect terms, divide by °

2x = 160 . . . . . . . . . . . . . . . subtract 20

x = 80 . . . . . . . . . . . . . . . . . divide by 2

Then the angle x+50 is ...

(x +50)° = (80 +50)° = 130°

This is also the measure of the angle marked y.

For the lines to be parallel, x = 80, y = 130°.

jolli1 [7]3 years ago

6 0

Answer:

X = 80*

y = 130*

Step-by-step explanation:

I got it right on Edge.

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Jenny has saved $3,800 over the last 12 months. She saved either $250 or $350 a month. During the 12 month period, how many time

Nana76 [90]

Answer:

Jenny save 4 times $\$ 250$ for the month

Step-by-step explanation:

Given Jenny has saved $\$3,800$ over the last 12 months.

She saved either $\$250$ or $\$350$ a month.

Let the number of months to save $\$250$ be x

Let the number of months to save $\$350$ be y

Total period is 12 month.

$x+y=12 \ \ \ \ equation\ 1$

Jenny has saved $3,800 over the last 12 months.

$250x+350y=3800$

Dividing both side from 50 we get,

$\frac{250}{50}x+\frac{350}{50}y= \frac{3800}{50}$

$5x+7y=76 \ \ \ \ equation\ 2$

Now Multiplying equation 1 by 5 we get,

$5\times(x+y)=5\times 12\\5x+5y=60\ \ \ \ equation \ 3$

Now Subtracting Equation 3 by equation 2 we get,

$(5x+7y=76)-(5x+5y=60)\\2y=16\\y=\frac{16}{2}= 8$

Substituting the value of y in equation 1 we get,

$x+y=12\\x+8=12\\x=12-8\\x=4$

∴ Jenny save 4 Months of $\$ 250$ and 8 Months of $\$ 350$ in a 12 month duration

4 0

3 years ago

Read 2 more answers

Aré 24cd and 9cd like terms

Lapatulllka [165]

Answer:

Yes, they are

Step-by-step explanation:

Because they both end with cd, they are like terms. Anything with the same ending letters are like terms.

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3 years ago

D)) What is 39 x 35?<br>?<br>3° x 39 =<br>

yan [13]

Answer:

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Step-by-step explanation:

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finlep [7]

9/-7 x -4=

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3 years ago

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user100 [1]

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