Mathematics High School

Taylor was asked to solve the system of linear equations
3x - y = 12 and 10x + 5y = -10
by substitution. His solution is shown below.
Taylor's Solution:
Line 1: 10x + 5(-3x + 12)=-10
Line 2:10x - 15x + 60 = -10
Line 3: -5x +60 = -10
Line 4: -5x = -10 - 60
Line 5: -5x = -70
Line 6: x = 14

Which line is wrong? (pls help I’ll mark as brainliest)

Taylor Was Asked To Solve The System Of Linear Equations3x - Y = 12 And 10x + 5y = -10by Substitution.

Answers

Answer 1
Id take a guess and say line 1 because the rest looks correct

Related Questions

Wanna be brainlest thanked every day and 5 starred?
Just anwser this correctly

Answers

Answer:

1 Bag = 12.3 Ounces

5 Bags = 61.5 Ounces

123 Ounces = 10 Bags

Step-by-step explanation:

24.6 divided by 2 is 12.3.

12.3 times 5 is 61.5

61.5 times 2 is 123.

anyone know the answer to number 11? there’s only 2 options and you can see them in the picture.

Answers

Answer:

a)

Step-by-step explanation:

I am 100% sure it's the answer

Answer:

Step-by-step explanation:

using S[tex]\frac{o}{h}[/tex] C[tex]\frac{a}{h}[/tex] T[tex]\frac{o}{a}[/tex] (sin opposite/hypotenuse, cos adjacent/hypotenuse, tan opposite/adjacent)

Tan Y = 3/8

Tan Z = 8/3

hope this helps <3

NOW FOR REAL ITS MISSING DUE YESTERDAY I NEED THIS DONE NOW

Distance (meters)

time (seconds)

Estimate when he had run 19.5 meters

Answers

Answer:

6.45

Step-by-step explanation:

6.9-6.0=0.9

0.9÷2=0.45+6=6.45

This is the middle between 18 and 21.

Hope this helps and give brainliest, thank me and rate it 5 please. :)

Answer:6.45

Step-by-step explanation:

PLS HELLLLLPPPP ASAPPPP!

Interest = $45
Principal = ?
Interest rate = 3%
Time = 2 years

Answers

What interest is this. Simple or compound? Cause both have different formulas.

Simple interest

A(interest) = (Principal× Rate×time)

A= (P ×3×2years)/100%

$45 = 6/100P

4500= 6p

4500/6 = P

principal= $750.

hiii please help i’ll give brainliest please please thank youuuuu

Answers

Answer:

5:3=8

120. 120÷8=15

5×15=75. 3×15=45

there are 45 children

Hello please help I really don't understand this

Answers

Is x and y proportional, it’s telling you that does it makes sense, is the rate of change correct.

Yes x and y is proportional because as it states, everytime y increases by 2, x increases by 1

Arlene has raised $56 for her class field trip. This is $14
more than three times the amount Adam has raised.
Which equation could you use to find how much money
Adam has raised?

Answers

Assuming Adams amount is x, three times his amount will be 3x. $14 more than the times Adam's amount will be 14 +3x.

Therefore if Arlene's money is $56 which is $14 more than three times Adam's amount, then the equation will be ;

14+3x=56

How many feet are in 47 yards?

Answers

141 feet sorry if I’m wrong


If 5 is added to twice a number, the result is 29. Find the number.​

Answers

Answer:

12

Step-by-step explanation:

12 times 2 = 24 + 5= 29

Answer:

19

Step-by-step explanation:

29 minus five minus five

18-12x=-2(6x-9)
fast please

Answers

Answer:

The answer is 18 -12x = -12x + 18

the answer is “all real numbers”

Plz help. Less than 10mins to finish this a few others.

Answers

Answer:

RS = XY (since the two a triangles are similar, you have to match the sides up and then set the values equal to eachother to find the value of x)

3x +2 = 5x -3 (subtract 5x from both sides)

-2x +2 = -3 (subtract 2 from both sides)

-2x = -5 (divide both sides by -2 to isolate x)

x = 2.5 (take the value of x and plug it into the expression given for RS)

3(2.5) +2 (multiply)

7.5 +2 (add)

9.5 (this is the length of RS)

Step-by-step explanation:

I hope this helps :)

consider the equation _. determine the steepness in the line between x=1 and x=2.

Answers

Answer:

2/3

Step-by-step explanation:

Firstly we get the y value at both x points

At x = 1

y = 2/3 + 1/2 = (4 + 3)/6 = 7/6

At x = 2

y = 4/3 + 1/2 = (8 + 3)/6 = 11/6

The slope formula is

m = (change in y)/change in x

The slope is thus;

(11/6-7/6)/(2-1) = 4/6 = 2/3

The school store sells pencils for $0.30 each, hats for $14.50 each, and binders for $3.20 each.
Elena would like to buy 3 pencils, a hat, and 2 binders. She estimated that the cost will be less
than $20.
Do you agree with her estimate? Explain your reasoning.

Answers

Answer: the answer is $29.9

Step-by-step explanation:

No, she wrong it will be less than $20

Answer:

No

Step-by-step explanation:

I did the whole thing on paper because it gave me 21.80$

This is the equation I need help wiht

Answers

Answer:

y=-5x+5

Step-by-step explanation:

y=mx+b

m = slope which is 5 going down, so -5

b = y intercept which is 5

Jack and Jill each bought 100 pounds of cashews. Jack divided his cashews into 23 equal amounts and put them in paper bags. Jill divided her cashews into 18 equal amounts and put them in paper bags. To celebrate, each ate a bag of cashews. Now, Jack has 22/23 of his paper bags and Jill has 17/18 of her paper bags. Who has more pounds of cashews left?

Answers

Answer: Jack

Step-by-step explanation:

100÷2=50

50÷23=2.1739130435

50÷18=2.7777.....8

Plz help due tomorrow

Answers

Answer:

you combine like term

-8.5+7.9

Step-by-step explanation:

Hope this helps! -8.5+7.9

Find the number that makes the ratio equivalent to 6:7
60:

Answers

Answer:

60:70

Step-by-step explanation:

[tex] \frac{60}{x} = \frac{6}{7} \\ \\ 60 \times \frac{7}{6} = x \\ \\ 70 = x[/tex]

A child ate 30 grams of cereal for breakfast and her brother ate 40% more than that. How many grams of cereal did the brother eat?

Answers

Answer:70%

Step-by-step explanation: 30 + 40 grams = 70

70 Grams

Kayla thinks that the slope of a vertical line is undefined, while Joshua argues that the slope of a vertical line is zero. Who is correct? *

Answers

Answer:

Kayla is correct

Step-by-step explanation:

For a vertical line, the x-value is the same

This means there is no change in the x value

A slope is calculated by dividing by the change in x value

since in this case , we will be dividing by zero, it means that the value of our slope is going to be undefined

This means that Kayla is correct

Choose the graph of this equation. y = 2.5x

Answers

Answer:

A.

have a good day or night

Please help, Look at the picture

Answers

Answer:

the first one?

Step-by-step explanation:

I am like 67% sure.

Select the correct answer.
Which expression is equivalent to 2d^2-6/d^2+2d-48 / d-3/2d+16if no denominator equals zero?

Please help. On Pluto

Answers

Answer:

B; 4/d-6

Step-by-step explanation:

We want to perform a division here

Flipping the right hand side while changing the sign to multiplication, we have that;

(2d - 6)/ (d^2 + 2d -48) * (2d + 16)/d-3

= 2(d-3)/(d^2 + 2d - 48) * 2d + 16/d-3

= 2/(d^2 + 2d - 48) * 2d + 16/1

2/(d-6)(d + 8) * 2(d + 8)/1

= 2/d-6 * 2/1

= 4/d-6

how old am i if 2 times my age minus 10 is 60?

plz answer

Answers

you’re 35 because 60+10 is 70 divided by 2
35 years old have a good day

The value of 6 nickels is _____% of the value of a dollar.

60
50
40
30
NEED HELP RIGHT AWAY!!!

Answers

Answer:

30%

Step-by-step explanation:

Becuase 6 nickels add up to 30

the two angles measuring (30 + 2 a)degree and (125 -a) degree supplementary to each other, then find the value of a.​

Answers

Answer:

The value of a is 25

Step-by-step explanation:

When two angles are supplementary, they add up to 180 degrees

Mathematically,

(30 + 2a) + (125-a) = 180

30 + 2a + 125 - a = 180

a + 155 = 180

a = 180-155

a = 25 degrees

I am so lonelyyyy and singllleee lol

Answers

Answer:

same :(

Step-by-step explanation:

Résous l'équation suivante pour la variable d:
d - 9 = 11

Answers

Answer:

Résous l'équation suivante pour la variable d:20

Step-by-step explanation:

/

D-9=11

20-9=11

PLEASE help im timed

Answers

Answer:

Step-by-step explanation:

Last one?

Answer:

the second one

Step-by-step explanation:

SOHCAHTOA, we use the toa part

tan(24)=x/12

Which function is not linear? A. f(x)=x/4 B. f(x)=2x+1 C. f(x)=-3 D. f(x)=-1/x

Answers

Answer:

f(x) = -1/x

Step-by-step explanation:

Here, we want to find the function that is not linear

A linear function is of the form;

y = mx + b

where m can be zero, or b can be zero

The only option that does not follow this description is

f(x) = -1/x

You are a space alien. You visit planet Earth and abduct 97 chickens, 47 cows, and 77 humans. Then, you randomly select one Earth creature from your sample to experiment on. Each creature has an equal probability of getting selected. Create a probability model to show how likely you are to select each type of Earth creature. Input your answers as fractions or as decimals rounded to the nearest hundredth.

Answers

Answer:

there are 97 + 47 + 77 = 221 creatures from Earth in the alien spaceship.

the probability that a human being is chosen at random = 77 / 221 = 0.3484 = 34.84%

the probability that a chicken is chosen at random = 97 / 221 = 0.4389 = 43.89%

the probability of choosing a cow at random = 100% - 34.84% - 43.89% = 21.27%

Answer:

0.44

Response 2

0.21

Response 3

0.35

Step-by-step explanation:

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