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3 years ago

Is y=-2x linear or non linear

Mathematics

1 answer:

wel3 years ago

6 0

Answer:

Step-by-step explanation:

Iinear

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I'm not sure how to solve this. please help

zepelin [54]

Answer:

The awnser is 2 and 3!!!!!!

8 0

2 years ago

A chemical company makes two brands of antifreeze. The first brand is 45% pure antifreeze, and the second brand is 95% pure anti

Dimas [21]

Answer:

42 gallons 45% antifreeze

28 gallons 95% antifreeze

Step-by-step explanation:

If x is volume of 45% antifreeze, and y is volume of 95% antifreeze, then the total volume is:

x + y = 70

And the total amount of antifreeze is:

0.45 x + 0.95 y = 0.65 (70)

Solving by substitution:

0.45 x + 0.95 (70 − x) = 0.65 (70)

0.45 x + 66.5 − 0.95 x = 45.5

21 = 0.5 x

x = 42

y = 28

7 0

2 years ago

You are drawing a map. Two cities on the map are 7 inches apart. You know the actual distance between them is 1,750 miles. What

swat32

Answer:

1 inch : 250 miles
1/15,840,000

Step-by-step explanation:

Map scale factors are usually written a couple of different ways. One of them is the number of miles represented by 1 inch. Here, that is ...

1750 mi/(7 in) = 250 mi/in

Written that way, the scale factor is 1 in : 250 miles.

The other way the scale factor can be written is as a unitless ratio. That ratio is ...

$\dfrac{1\,\text{in}}{250\,\text{mi}}\times\dfrac{1\,\text{mi}}{5280\,\text{ft}}\times\dfrac{1\,\text{ft}}{12\,\text{in}}=\dfrac{1}{250\cdot 5280\cdot 12}=\dfrac{1}{15,840,000}$

The map scale factor is 1 in : 250 miles, or 1/15,840,000.

5 0

3 years ago

Read 2 more answers

Please help for gods sake:(

worty [1.4K]

Answer:

answer is b)

Step-by-step explanation:

please mark me brainliest

6 0

2 years ago

Read 2 more answers

Jambalaya is a Cajun dish made from chicken, sausage, and rice. Simone is making a large pot of jambalaya for a party. Chicken c

NeTakaya

$x- amount\ of\ chicken-\ cost\ 6\$\ per\ pound\\ 
y-amount\ of sausage\ - cost\ 3\$\ per\ pound\\
z-amount\ of rice-\ cost\ 1\$\ per\ pound \\\\
x+y+z=13,5\ and\\
6*x+3*y+1z=42 \ and\\
z=2y\\\\
First\ substitude\ z=2y\ to \ both\ equations:\\
 \left \{ {{x+y+2y=13,5} \atop {6x+3y+2y=42}} \right. \\\\
\left \{ {{x+3y=13,5} \atop {6x+5y=42}} \right. |First\ equation\ multiply\ by\ -6\\\\
\left \{ {{-6x-18y=-81 } \atop {6x+5y=42}} \right.|Adding\ equations\\
\+\ -\ -\ -\ -\ -\ -\- \\
-13y=-39|:-13$ $y=3\\
x+3y=13,5\\
x+3*3=13,5\\
x=13,5-9=4,5\\
x=4,5\\
z=2y\\
z=2*3=6\\
She\ will \ use \ 4,5\ pounds\ of\ chicken, \ 3\ pounds\ of\ sausage\\
and\ 6\ pounds\ of \ rice
$

7 0

2 years ago