All categories

2 years ago

Help this is really hard

Mathematics

2 answers:

scoundrel [369]2 years ago

4 0

Answer:

x = 18, y = 45

Step-by-step explanation:

4x - 7 + a = 180 (linear pair)

But, a = 6x + 7 (alternate interior angles)

=> 4x - 7 + 6x + 7 = 180

=> 10x = 180

=> x = 18

Now, 3y - 20 = 6x + 7 (vertically opposite angles)

=> 3y - 20 = 6(18) + 7

=> 3y = 108 + 7 + 20

=> 3y = 135

=> y = 45

Hope it helps :)

Please mark my answer as the brainliest

kakasveta [241]2 years ago

3 0

Answer:

x=18, y=45

Step-by-step explanation:

I'm in algebra 2, so i don't remember theorem names anymore. But I think I know how to solve it. M and N are parallel, which means that the angles that form are equal to each other on opposite sides. We also know that a flat line adds up to 180 degrees. 6x+7 + 4x-7 add up to 180. (They are not equal angles) Solve for x. 10x=180 x=18.

Now for the y value. 6x+7 and 3y-20 are equal to each other, because they are opposite angles. 6(18)+7=115. set y equal to 115. 3y-20=115. 3y=135

y=45

You might be interested in

A high school has 44 players on the football team. The summary of the players' weights is given in the box plot. What is the int

lutik1710 [3]

Answer:

Where’s the plot box???

Step-by-step explanation:

???

3 0

2 years ago

A skirt originally cost $10. How much will it cost if you sell it in Amazon with 25% mark-up price

san4es73 [151]

Answer:

$20.40

Step-by-step explanation:

20% off means that the new price of the skirt will be 80% of the original price:

$30(100% – 20%) = $30(80%)

Converting the percent to a decimal gives:

$30(0.8) = $24.00

There is an additional 15% off the sale price of $24.00, so the final price is 85% of the sale price:

$24(100% – 15%) = $24(85%)

Again converting the percent to a decimal gives:

$24(0.85) = $20.40

5 0

2 years ago

Reuben bought 5CDS that were each the same priceIncluding sales tax, he paid a total of \$81.50. Each CD had a tax of $0.60. wha

Liula [17]

Answer:

The price of each CD before tax is $15.70

Step-by-step explanation:

Given that:

Number of CDs bought by Reuben = 5

Cost of five CDs = $81.50

Sales tax on each CD = $0.60

Sales tax on 5 CDs = 0.60*5 = $3.00

Price of CDs without tax = 81.50 - 3.00 = $78.50

Price of each CD = $\frac{Cost\ of\ CDs}{No.\ of\ CDs}$

Price of each CD = $\frac{78.50}{5}$

Price of each CD = $15.70

Hence,

The price of each CD before sales tax is $15.70

7 0

2 years ago

Alex goes to the store to buy groceries he has 20 to spend at the store write an inequality to represent the amount Alex can spe

den301095 [7]

ax+by=20

a represents how many first items you bought

x represents the cost of the first item

b represents how many second items you bought

y represents the cost of the second item

4 0

2 years ago

Can somebody please help me with the domain & function

Orlov [11]

Reverse the table and observe

For 1 month cost is 50
For 2 months the cost is 100

See the pairs are (1,50) and (2,100) and so on

We know domain is set of x values and range is set of y values.

As there is no extra cost and the cost is 50$ per month cost depends upon the month means months are independent and cost is dependent , months are x and cost will be y then

The equation is

y=50x

So here domain is all months

{1,2,3,4,5,6,7,8,9,10,11,12}

4 0

1 year ago

Read 2 more answers