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olchik [2.2K]
3 years ago
13

Directions: For the following systems, determine whether or not the ordered triple (1, -1, -2) is a solution to the equations be

low.
1. 3x – 3y – z = 2
Mathematics
1 answer:
Fofino [41]3 years ago
8 0

Answer:

<h2>NOT</h2>

Step-by-step explanation:

Put x = 1, y = -1 and z = -2 to the equation 3x - 3y - z = 2, and check the equality:

3(1) - 3(-1) - (-2) = 3 + 3 + 2 = 8 ≠ 2

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72 is greater and faster than 68 which means Liz will be hired!

Please give brainliest❤️
5 0
3 years ago
Read 2 more answers
Holly is earning money to buy a new bike. Her parents give her $20 to start and she sells lemonade for $1.50 a cup. a. write a l
slega [8]

Answer:

250= 1.50x + 20

Step-by-step explanation:

here 250 is the goal. 1.50 is how much she makes for a cup and x is the number of times to get x much. with how much her parents gave is 20. so we add the money her parents give and 1.50 times x to know the money shegets from all the lemonade selling.  graphing the equation but I cant do it on here

God Bless :>

4 0
3 years ago
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a vial of medicine contains 76 fluid ounces of medicine. If one dose consists of 2 fluid ounces how many doses does the vial con
Fudgin [204]
Then it contains 38 doses becasue 76 divide 2 is 38

7 0
3 years ago
Help I don’t understand and I need this<br> Done as soon as possible
Sonbull [250]

Answer:

y - 7 = -1/4(x-4)

Step-by-step explanation:

point slope is y-y₁=m(x-x₁)

(4, 7) and (8, 6)

I like to put it in the slope-intercept form first

so... 6 - 7/ 8-4 = -1/4 (slope)

6 = -1/4(8) + b

6/(-2) = -2/(-2) + b

-3 = b

so... y=-1/4x + -3

plug it in to point slope form

y - 7 = -1/4(x-4)

hopefully that made sense :)

3 0
3 years ago
Rationalize the denominator and simplify <br> √a+1-2/√a+1+2
zalisa [80]

5+a-4√(a+1)/(a-3) is the simplified form of the number. This can be obtained by multiplying numerator and denominator with conjugate of the denominator.

<h3>Simplify the number:</h3>

Given the number,

√a+1-2/√a+1+2

Denominator = √a+1+2

Conjugate of the denominator = √a+1 - 2

Now, (√a+1-2)(√a+1 - 2 )/√(a+1+2)(√a+1 - 2 )

=(√a+1 - 2 )²/(√a+1)² - 4

=(a+1 -4√a+1+5)/(a+1-4)

=5+a-4√(a+1)/(a-3)

Hence 5+a-4√(a+1)/(a-3) is the simplified form of the number.

Learn more about rational numbers:

brainly.com/question/1310146

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7 0
2 years ago
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