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3 years ago

Create an equivalent system of equations using the sum of the system and the first equation

Mathematics

2 answers:

ohaa [14]3 years ago

8 0

Answer:

$\large\boxed{A.\ \left\{\begin{array}{ccc}-3x+y=12\\-2x+4y=18\end{array}\right}$

Step-by-step explanation:

$\underline{+\left\{\begin{array}{ccc}-3x+y=12\\x+3y=6\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad-2x+4y=18\\\\\text{therefore}\\\\\left\{\begin{array}{ccc}-3x+y=12\\-2x+4y=18\end{array}\right$

KIM [24]3 years ago

6 0

Answer:

it's A

Step-by-step explanation:

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In the diagram, WZ=StartRoot 26 EndRoot.

gogolik [260]

Answer:

$P = 8 + 2\sqrt{26}$

Step-by-step explanation:

Given

$W = (-2, 4)$

$X = (2, 4)$

$Y = (1, -1)$

$Z = (-3,-1)$

Required

The perimeter

First, calculate the distance between each point using:

$d = \sqrt{(x_1 - x_2)^2 + (y_1 -y_2)^2$

So, we have:

$WX = \sqrt{(-2- 2)^2 + (4-4)^2 } =4$

$XY = \sqrt{(2- 1)^2 + (4--1)^2 } =\sqrt{26}$

$YZ = \sqrt{(1- -3)^2 + (-1--1)^2 } =4$

$ZW = \sqrt{(-3--2)^2 + (-1-4)^2 } =\sqrt{26}$

So, the perimeter (P) is:

$P = 4 + \sqrt{26} + 4 + \sqrt{26}$

$P = 8 + 2\sqrt{26}$

8 0

3 years ago

Which verb form correctly completes the sentence? Jessica __________ one of her longer gowns to wear. A. choosed B. had chose C.

irina1246 [14]

D. chose

Jessica chose one of her longer gowns to wear.

Chose is an irregular verb. It comes form the verb choose, which means to select. The conjugation of choose is chose and chose is a past simple verb.

5 0

3 years ago

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Please help me and type out the answer

Orlov [11]

Answer:

The owner makes $2 in sales per customer

Note: The "Amount of sales" label of the question is phrased poorly. s could be better labeled "profit from sales" or at least "Amount made from sales", etc.

Step-by-step explanation:

If you logically think about how the answer (now that you know it) relates to the question, it should make simple sense.

i.e. if you consider the first column where $24 is made from 12 customers, and divide the $24 made by the 12 customers, you'll see that each customer spends $2.

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2 years ago

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Which measurement is most accurate to describe the amount of water a teaspoon could hold?

dybincka [34]

Your answer is A.) 5mL

7 0

2 years ago

1-07 What is the length of the marked portion of each line segment? Copy the

VikaD [51]

Answer:

A. 25 B. 45 C. 30

Step-by-step explanation:

75 ÷ 3 = 25

25 × 1 = 25

75 ÷ 5 = 15

15 × 3 = 45

50 ÷ 5 = 10

10 × 3 = 30

5 0

2 years ago