All categories

3 years ago

How do i do this and tell me how u got the answer

Mathematics

1 answer:

EastWind [94]3 years ago

3 0

Substitute.
2x+(2x -15) = -3

4x -15 = -3
Add 15 to both sides

4x = 12

Divide by 4

X=3

2(3) + y = -3

6+y=-3
-6 from both sides
Y=-9

(3,-9)

You might be interested in

How do you complete the square to rewrite y= x^ -6x + 15 in vertex form

Vaselesa [24]

Vertex form of a quadratic equation is $y=a(x-h)^{2}+k$
where (h, k) is the vertex.

Our aim is to write the expression $y=x^{2} -6x+15$ in the form
$y=a(x-h)^{2}+k$

$y=x^{2} -6x+15$

$y=x^{2} -2*3*x+15$

$y=(x^{2} -2*3*x+ 3^{2})-3^{2}+ 15$

$y=(x-3)^{2}-9+15$

$y=(x-3)^{2}+6$

5 0

3 years ago

−3n+2≥−4n−3 solution

nydimaria [60]

Answer:

n≥-5

Step-by-step explanation:

-3n+2≥-4n-3

add 4n on both sides

n+2≥-3

subtract 2 on both sides

n≥-5

4 0

3 years ago

Read 2 more answers

Can someone please help me solve these 4

choli [55]

Answer:

find the area and then multiply

Step-by-step explanation:

5 0

2 years ago

Whats 9+10???? i really need to know this

madreJ [45]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A manufacturing company ships its product in two different sizes of truck trailers. Each shipment is made in a trailer with dime

kherson [118]

Answer:

Mean volume shipped per trailer load = 2960 ft³

Step-by-step explanation:

Since both trailers are always full,

Total volume in one 30 feet trailer shipment = 8 × 10 × 30 = 2400 ft³

Total volume in one 40 feet trailer shipment = 8 × 10 × 40 = 3200 ft³

Assuming a basis of 10 shipments, 3 shipments are done using the 2400 ft³ trailer and 7 shipments are done using the 3200 ft³ trailer.

Mean volume shipped per trailer load = total volume shipped/number of shipments

Total volume shipped = (3 × 2400) + (7 × 3200) = 7200 + 22400 = 29600 ft³

Number of shipment in the basis used = 10

Mean volume shipped per trailer load = 29600/10 = 2960 ft³

4 0

3 years ago