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2 years ago

Which graph correctly represents this 2y+x=-5and y+3x=0

Mathematics

1 answer:

meriva2 years ago

7 0

Answer:

you didn't feature any graphs for me to choose from

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Please help me w this!!

Digiron [165]

Answer:

(-15, 14)

Step-by-step explanation:

Let the coordinates of Z be (x,y).

$\frac{x+5}{2}=-5 \implies x=-15 \\ \\ \frac{y+6}{2}=10 \implies y=14$

6 0

1 year ago

What is the area of this figure?? PLEASE HELP

diamong [38]

Answer:

1410ft²

Step-by-step explanation:

20 * 12 * 2 + [62 * (15 + 12)] =

480 + (62 * 15) =

480 + 930 =

1410ft²

8 0

1 year ago

Substitution method need help for home work

Marizza181 [45]

-3y = x...so we sub in -3y for x in the other equation

-x + 7y = 70
-(-3y) + 7y = 70
3y + 7y = 70
10y = 70
y = 70/10
y = 7

so we sub in 7 for y in either of the original equations to find x
-3y = x
-3(7) = x
-21 = x

so ur solution is (-21,7)

6 0

2 years ago

Here are descriptions for how two dot patterns are growing,

Arisa [49]

The steps in the patterns A and B form a sequence

The attached diagram represents dots in patterns A and B

<h3>How to draw the diagrams</h3>

For pattern A, we have:

Step 2 = 10 dots

Increment of 3 dots in each step

This means that:

Step 0 = 4 dots

Step 1 = 7 dots

Step 2 = 10 dots

Step 3 = 13 dots

For pattern A, we have the following rule

$T_n =2n^2 + 1$

When n = 0 to 3, we have:

$T_0 =2(0)^2 + 1 =1$

Step 0 = 1 dot

$T_1 =2(1)^2 + 1 =3$

Step 1 = 3 dots

$T_2 =2(2)^2 + 1 =9$

Step 2 = 9 dots

$T_3 =2(3)^2 + 1 =19$

Step 3 = 19 dots

Next, we draw the diagrams of both patterns (see attachment)