Mathematics High School

To solve the system of linear equations 8x+ by - 18 and 6x+y=-2 by using the linear combination method, Amos decided that he should first multiply the second equation by -5 and then add the two equations together to eliminate the y terms. His

calculations are as shown. Amos’s solution is (2,-14). What did he do wrong?

Answers

Answer 1
You must first the dynamic aim type first then reverse and lock in.

Related Questions

Can someone help me find the volume of the cone and the entire figure

Answers

Answer:

10x15x10 1500

Step-by-step explanation:

What the Sum of Adding the Polynomials.

Answers

Bbb hunk. Junk. Jensen the nonsense

Yesterday, 20 bakery customers bought muffins and 11 of those customers bought banana muffins. If 100 customers buy muffins tomorrow, how many would you expect to buy a banana muffin?

Answers

Answer:

55

Step-by-step explanation:

Make a proportion.

11/20=x/100

20*5=100, 11*5=55

What is the equation in slope-intercept form of the line that passes through the points ( -4 , 2) and (12, 66)?
A. y=0.25x+3
B. y=0.25x-4.5
C. y=4x+18
D. y=4x-42

Answers

i think maybe B, not sure

1. A student has a rectangular block. It is 2 cm wide, 3 cm tall, and 25 cm long. It has a
mass of 600 g. Determine the density of the block to the nearest unit.
8.9

Answers

Answer:

20 gcm^3

Step-by-step explanation:

Density = mass / volume

Volume = 3 X 2 X 25 = 30 cm

600 / 30 = 20

not 100 % sure though

Georgia has 168 songs in her playlist, while Scarlet has 266 songs in her playlist. Which statement correctly compares the
number of songs in the two playlists?
266 < 168
266 = 168
168 < 266
168 > 266

Answers

Answer:

168<266

Step-by-step explanation:

Answer:

168<266 (Did it on college bridge)

Step-by-step explanation:

ive been stuck on problem 20 for so long, help!!

Answers

I believe it’s letter i.

if a=-4h^2-h+5 and b=8h-3h+12 find a-b

Answers

Answer:

4h^2-6h-7

Step-by-step explanation:

[tex](4h^{2} -h+5) - (8h-3h+12)\\4h^{2} -h+5 - 8h+3h-12\\4h^{2}-9h+3h-7\\4h^{2}-6h-7\\[/tex]

Help please I’ll mark you brainliest!!

Answers

Answer:

35 ft

Step-by-step explanation:

Sorry this took me so long, I am 99% sure it is right though

I hope this helps :)

Within the gulf war did javen work at sonic?

Answers

Answer:

yes for 2 hours then died

Step-by-step explanation:

LOLLLL LOOK HERE PIC

Point c has the coordinate -7 and d has the coordinate 6 on a number line. What is the distance between c and d

Answers

Answer:

7

Step-by-step explanation:

hiii please help i’ll give brainliest:)

Answers

Answer:

oligarchy

Step-by-step explanation:

What is the slope of the line that contains the points (6,-1) and (2,4)

Answers

Answer:

-1.25

Step-by-step explanation:

y= -1.25x+6.5

Helpppp 30 points and brainliest

Answers

Answer:

i would say it's probably c

A bag with 8 marbles has 8 yellow marbles. A marble is chosen from the bag at random. What is the probability that it is yellow?
Write your answer as a fraction in simplest form.

Answers

Answer: 1

Step-by-step explanation:

8 yellow / 8 total = 8/8 = 1

Jason represented the values of his 35 baseball cards in a histogram and in a stern-and-leaf plot. Which of these best describes the graph and characteristic that allow Jason to find the median value of his 35 baseball cards?​

Answers

are there any choices?

Step-by-step explanation:

6 gallons 3 pints = pints

Answers

Answer:

51

Step-by-step explanation:

Each gallon is equal to 8 pints. That means that you can just multiply 8 by 6, which gives you 48, then add 3.

Hope that this helps!

Answer:

51

Step-by-step explanation:

Plz help me giving branliest. I need help with both

Answers

Answer:

The first one is 30

The second one is 20

Step-by-step explanation:

30 and 20 the answers..

Hey, can you please help me the best that you can. I would really appreciate it, thank you! :)

Answers

1 cookie = 45 oz sugar

2 cookies = 2×45 oz = 90 oz

3 cookies = 3×45 oz = 135 oz

...

523 cookies = 523×45 oz = 23,535 oz

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Answers

Answer:

I think D

Step-by-step explanation:

It makes sense to me

If y varies inversely as x, and y= 4 when x=6, then determine the value of y when x=5.

Answers

Answer:

y = 4.8

Step-by-step explanation:

y = k/x

4 = k/6

k = 24

y = 24/5

y = 4.8

Which of the following is equal to g(x)?
A. 4(x – 2)
B. 4(x + 2)
C. 4x – 2
D. 4x + 2

Answers

It would probably be A

Find the circumference of a circle with a radius of 4.4 inches. Use 3.14 for pie. Round to the nearest tenth if necessary. Please provide steps. :) :D

Answers

Answer:

27.65

Step-by-step explanation:

C=πd=π·8.8≈27.64602

rounded to the nearest tenth would be 27.65

hoped this helped.

Which expression is equivalent to 173-10+3(25+1)?
238-9
238-7
118-7
118-9

Answers

Answer:

Step-by-step explanation:

173-10+3(25+1)=241

238-9=229

238-7=231

118-7=111

118-9=109

At a concession stand, a pickle and two bags of chips costs a total of $3.25. Three pickles and four bags of chips costs a total of $7.25. To determine the cost of one pickle, Kevin is writing a system of equations. His first equation is shown: x + 2y = 3.25

Which of the following could be the second equation in his system of equations?
3x + 4y = 7.25

4x + 3y = 7.25

3x - 4y = 7.25

(3 + 4)x = 7.25​

Answers

Answer:

p + 2c = 3.25 Start with these two equations

3p + 4c = 7.25

p = -2c + 3.25 Solve for one variable

3(-2c +3.25) + 4c = 7.25 Substitute

-6c + 9.75 + 4c = 7.25

-2c = -2

c = 1

p + 2(1) = 3.25 Substitute

p + 2 = 3.25

p = 1.25

A bag of chips costs $1

A pickle costs $1.25

Step-by-step explanation:

pls mark me brainless

Help ill give brainliest and 5 star and thx if u help with all of em and ill give 20 points
plz plz plzzz

Answers

Answer:

1. 3mg

2. 3050g

3. 0.025g

4. 5700mg

5. 0.294g

6. 32mg

7. 13700mg

8. 2.441kg

9. 8.24g

10. 0.075kg

11. 430g

12. 0.721g

Step-by-step explanation:

This should be right :)

The formula for the area of a circle is A = π r^2? Which equation shows the formula in terms of r?

Answers

The correct answer is C

A regular octagon with side length a cm can be made by cutting off
the four corners of a square board. How long should the sides of the
board be?

Answers

Answer:

one side = [tex]\frac{a\sqrt{2}}{2}[/tex]

Step-by-step explanation:

if you draw an octagon on a piece of paper, you can draw a square around it, you should be able to see a diagram of this attached, ignore the 6.

Let's say TP = a

since it's a regular octagon, TP = HT

and using the Pythagoras Theorem,  we know a² + b² = c² and thus:

√(AT² + HA²) = HT

and since AT = HA which we will call x, the equation becomes:

√(2x²) = HT = a

rearrange the equation to solve for x and you get:

2x² = a²

x² = [tex]\frac{a^{2} }{2}[/tex]

x = [tex]\frac{a}{\sqrt{2}}[/tex]

which, if you rationalise the denominator, you get:

x = [tex]\frac{a\sqrt{2}}{2}[/tex]

6. y=-x
Point:
Slope:

Answers

Answer:

Slope= -1

Step-by-step explanation:

The point is X

Answer:

-1

Step-by-step explanation:

because the number in front of the x is your slope

Three friends ordered personal-sized pizzas for lunch. Lucia ate 2/3 of her pizza, Allie ate 1/4 of her pizza, and Carolina ate 2/5 of her pizza. Which statement correctly compares the amount of pizza that the friends ate?

Answers

Answer:

They have atleast two or one left

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