All categories

3 years ago

Plz help me out to get the answer

Mathematics

2 answers:

Gnoma [55]3 years ago

8 0

Answer:

Step-by-step explanation:

Put x = -1 to the equation -2x + 7y = -54

(-2)(-1) + 7y = -54

2 + 7y = -54 <em>subtract 2 from both sides</em>

7y = -56 <em>divide both sides by 7</em>

y = -8

vaieri [72.5K]3 years ago

6 0

-2(-1) + 7y = -54

2 + 7y = -54

7y = -56

y = -8

When x = -1, y = -8.

You might be interested in

Select the scenario below that demonstrates sampling bias. Select the correct answer below:

Vsevolod [243]

Answer:

C. Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department.

Step-by-step explanation:

Sampling Bias is case, in which some section of population have higher or lower chance of being selected in sample than others.

'Elizabeth wants to estimate the mean vacation days of coworkers at her company. She collects data by selecting a random group of coworkers within her department'. This case is of Convenience Sampling, where person selects sample only as per his/ her convenience.

Elizabeth has conveniently chosen sample workers from her department, so they have higher chance of being in sample, others have lesser chance. Hence, this is Sampling Bias

7 0

3 years ago

Jenny and her children went to the SeaWorld.She purchased adult ticket for herself and children tickets for her 2 boys. Tickets

dangina [55]

Given:

She purchased adult ticket for herself and children tickets for her 2 boys.

Cost of one adult ticket = $39.99

Cost of one child ticket = $19.99

To find:

The expression to represent the total cost of the tickets Jenny purchased.

Solution:

Let x represent the number of adult ticket purchase

and y represent the number of child tickets purchase.

Cost of one adult ticket = $39.99

Cost of one child ticket = $19.99

Total cost = 39.99x + 19.99y

Therefore, the expression for total cost is 39.99x + 19.99y.

She purchased one adult ticket and 2 child tickets.

Substitute x=1 and y=2 in the above expression.

Total cost = 39.99(1) + 19.99(2)

= 39.99 + 39.98

= 79.97

Therefore, the required expression to represent the total cost of the tickets Jenny purchased is 39.99(1) + 19.99(2) and total cost is $79.97.

3 0

3 years ago

Could you guys please help me with this :3

Ivenika [448]

Total is $18.72 so the shopper would need to buy 6 of the 8 packs!!!

3 0

3 years ago

A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she takes a red

noname [10]

There was originally one red marble in the bag because at first the probability was 1 in 5 therefore the other 4 were blue and there was only 1 red

4 0

4 years ago

Line q passes through (−5, 5) and is parallel to the line 2x + y + 1 = 0.

Tcecarenko [31]

Parallel lines has equal slopes.
Equation of the line 2x + y + 1 = 0 in slope intercept form is y = -2x - 1 with slope of -2. Therefore, the slope is -2.

3 0

3 years ago

Read 2 more answers