2 years ago

Please help me out..

Mathematics

1 answer:

sdas [7]2 years ago

5 0

Answer:

x=41

y=139

Step-by-step explanation:

x+y = 180 since they form a straight line

y is 3x +16

y = 3x +16

Replace y in the first equation

x+3x +16 = 180

Combine like terms

4x +16 = 180

Subtract 16 from each side

4x+16-16 =180-16

4x =164

Divide each side by 4

4x/4 =164/4

x = 41

y = 3x +16

y = 3*41 +16 = 123+16 =139

You might be interested in

Whats the answer for 10p+(-5)+(-y)+(-10p)

Amanda [17]

10p-5-y-10p

10p-10p-5-y

-5-y

hope it helps!

if not, sorry...

4 0

2 years ago

Choose the replacement for x and y that makes this equation a true statement: 4x − 5y = −69

lesya [120]

there are various possible answers ( up till infinity)

i'll give you five possible ones:

1) x = -16 and y = 1

2) x = -11 and y = 5

3) x = -1 and y = 13

4) x = 4 and y = 17

5) x = 104 and y = 97....

8 0

2 years ago

Solve. 14/n+7=10/n-4 N=5.25 N=3.5 N=31.5 N=30

Ilya [14]

Answer:

n=31.5

Step-by-step explanation:

The given question is:

$\frac{14}{n+7}=\frac{10}{n-4}$

Cross multiply to get:

$14(n-4)=10(n+7)$

Expand the parenthesis:

$14n-56=10n+70$

Group similar terms:

$14n-10n=70+56$

Combine the like terms

$4n=126$

Divide both sides by 4

$n=\frac{126}{4}$

n=31.5

5 0

2 years ago

A line with a slope of -7 passes through the points (u,0) and (8,-7) what is the value of u?

laila [671]

Answer:

u = 7

Step-by-step explanation:

Using the slope intercept formula:

$\frac{y2 - y1}{x2 - x1} = slope$

Substitute our values from the points and the known slope:

$\frac{-7 - 0}{8 - u} = -7$

Now we multiply both sides by (8 - u) to isolate the x:

(8-u) x $\frac{-7}{8 - u}$ = -7 (8 - u)

Next we add 56 to both sides:

-7 = -56 + 7u

Finish off by dividing both sides by 7:

7u = 49

u = 7

6 0

3 years ago

Gemma's soup recipe is shown in the table above.What is the radio of chicken stock to mixed vegetables? Express the ratio as a f

mars1129 [50]

Ratio of chicken stock to mixed vegetables is 3.5 to 8

3 0

2 years ago

Read 2 more answers