WHO ANSWER'S THE FIRST WITH THE CORRECT ANSWER WILL GET FREE BRAINLIST!!!
Michiko claims that to solve the system of linear equations 15x + 8y = 1 and 21x + 4y = -13, instead of multiplying the second equation by –2 and then adding the equations, she could multiply the second equation by 2 and then subtract the second equation from the first equation. Which statement is correct?

A: Michiko is right for this system of linear equations, but her method will not work for other systems of linear equations.

B: Michiko is right for this system of linear equations, and her method will also work for other systems of linear equations.

C: Michiko is wrong because her method will give the opposite of the correct value for x for any system of linear equations.

D: Michiko is wrong because her method will give the opposite of the correct value for y for any system of linear equations.

Answer:

2. Surface Area = 576m^2

3. Surface Area = 300 yd^2

Step-by-step explanation:

2.

Surface Area of Prism Formula:

Triangle Formula: Area = 1/2 * Base * Height

Left Triangle: Area = 1/2 * 8m * 6m = 1/2 * 48 = 24 m^2

Right Triangle:  Area = 24m^2

Rectangle Formula: Area = Length * Width

Top Rectangle: Area = 22m * 6m = 132m^2

Middle Rectangle: Area = 22m * 8m = 176m^2

Bottom Rectangle: Area = 22m * 10m = 220m^2

Add Total Surface Area:

Surface Area = LTrig + RTrig + TopRect + MidRect + BotRect

Surface Area = 24  + 24 + 132 + 176 + 220

Surface Area = 576 m^2

3.

Surface Area of Prism Formula:

Triangle Formula: Area = 1/2 * Base * Height

Left Triangle: Area = 1/2 * 9yd * 4yd = 1/2 * 36 = 18 yd^2

Right Triangle:  Area = 18 ydm^2

Rectangle Formula: Area = Length * Width

Top Rectangle: Area = 12yd * 8yd = 96yd^2

Middle Rectangle: Area = 12yd * 5yd = 60yd^2

Bottom Rectangle: Area = 12yd * 9yd = 108yd^2

Add Total Surface Area:

Surface Area = LTrig + RTrig + TopRect + MidRect + BotRect

Surface Area = 18 + 18 + 96 + 60 + 108

Surface Area = 300 yd^2

I am not sure if there is a short cut.

Answer:

d

Step-by-step explanation:

because it tells you how to do it in the equation.

Answer

C

Step-by-step explanation:

This shows that the interquartile range for Q2 is larger than Q3 so i think the answer is c

Answer: The Casio FX-9750GII Graphic Calculator features all the basic functionality of an entry-level graphing calculator, making it great for math coursework from Pre-Algebra to AP Calculus and Statistics and courses in between (like Geometry and Trigonometry).

Step-by-step explanation: pls friend can i get branliest and thanks

Answer:

Let u = √x which gives u2= x and rewrite the given equation in terms of u

u = 3 - u 2 / 4

Multiply all terms by 4, simplify and write the above quadratic in standard form and solve it for u.

u 2 + 4 u - 12 = 0

Two solutions: u = - 6 and u = 2

Use the substitution used above u = √x to solve for x.

u = - 6 = √x has no solution

u = 2 = √x has solution x = 4

Below is shown the graph of the right side of the given equation when written with its right side equal to zero. The x intercept of the graph is the graphical solution to the equation as shown below.

Step-by-step explanation:

Answer: x = 4

Step-by-step explanation:

    Given:

√x = 3 - (1 / 4)x

    Rewrite:

[tex]\displaystyle \sqrt{x} = 3 - \frac{1}{4}x[/tex]

    Square both sides:

[tex]\displaystyle (\sqrt{x} )^{2} = (3 - \frac{1}{4} x)^{2}[/tex]

[tex]\displaystyle x= \frac{1}{16}x^{2} -\frac{3}{2} +9[/tex]

    Set the equation equal to 0:

[tex]\displaystyle \frac{-1}{16}x^{2} +\frac{5}{2} -9=0[/tex]

    Use the quadratic formula:

[tex]\displaystyle x=\frac{-b\sqrt{b^{2} -4ac} }{2a}[/tex]

[tex]\displaystyle x=\frac{-(\frac{5}{2})\sqrt{(\frac{5}{2})^{2} -4(\frac{-1}{16} )(-9)} }{2(\frac{-1}{16} )}[/tex]

x = 4, 36

    Plugging back into equation shows us only one answer works,

x = 4

Answer:

No, because the shape or figure is not overlapping.

Step-by-step explanation:

A tessellation of the plane is an arrangement of polygons which cover the plane without gaps or overlapping.

Answer: The selling price is $54 and the 35% markup is equal to 14 dollars.

Answer:

A)(4,9)

B)(6,3)

C)(1,3)

D) (8,7)

E)(8,9)

Step-by-step explanation:

well, for creating points, it gets set up as (x,y) which it lays out in perfet format, and if you need help graphing, i can try and create it.

Answer:

Answer:

a)(4,9)

b)(6,3)

c)(1,3)

d) (8,7)

e)(8,9)

Step-by-step explanation:

Answer:

1. +5

2. -40

3. +8

4. +20

5. -15

6. +22

7. -9

8. +125

9. -35

10. 0

1. 7

2. 15

3. 0

4. -5

5. -3

6. 3

7. 17

8. 5

9. -101

10. 0

11. 16

12. 1

Step-by-step explanation:

Absolute value bars ask for the distance of a number and 0 so |-8| is equal to 8 since it is 8 units away from zero, |7| would be equal to 7 since it is 7 units away from 0. To do the more complicated problems simplify the equation as much as possible and then solve.

Answer:

C. 1/5 divide by 4

Step-by-step explanation:

When you divide two fractions, you multiply the first fraction by the reciprocal of the other one. To find the reciprocal of the second fraction, yo just have to switch the value of the numerator and denominator (i.e. 4/1's reciprocal is 1/4).

Another important thing to note is that 1/5 x 1/4 is 1/20 because you multiply straight across numerators and denominators.

Now that we have some back ground information, let's which expression leads to 1/20!

A:

B:

C:

Therefore, the answer is C. 1/5 divide by 4.

Answer:

Range = 7

Mean = 7.75

Assumption: Most students will have 7 or 10 letters in their last name

Step-by-step explanation:

Range = Largest - Smallest

           = 10 - 3

           = 7

Mean = Add the total numbers up to get a total / numbers in the series

          = (3+5+2(6)+2(9)+5(7)+4(8)+5(10)) / (1+1+2+5+4+2+5)

          = 7.75

Answer:

D

Step-by-step explanation:

I think if wrong im sorrrry

Answer:

the answer i got is d

Step-by-step explanation:

Answer:

A is the answer

Step-by-step explanation:

Have a nice day friend.!::::))))

There are infinitely many solutions to a linear equation with the same variable term on both sides of the equation.

We have to find the coefficient of "b"

from first equation:

from second equation:

solve them simultaneously:

Answer:

0.12

Step-by-step explanation:

Decimeter is 100 times greater than dekameter

Answer:

He should find the sample from people who eat brisket from multiple different resturaunts. A sample that would not be representative could be a vegetarian.

Step-by-step explanation:

If they eat brisket they'll know what the best brisket is.

A vegetarian deoesn't eat meat so wouldn't know.

Answer:

0.4 liters=400.0 milliliters

Step-by-step explanation:

Answer:

The maximum Number of stars she could make is the whole number value (discarding the remainder) = 3

Step-by-step explanation:

if this helps mark brainllest

Answer:

3

Step-by-step explanation:

19 = 5 + 5 + 5 + 4

1 sticker, 5 stars

3 stickers, 15 stars.

thanks I hope this is helpful

mark me as a brainlest you get 3 points!

Answer:

this is not maths

is the answer

if you like my answer please like comment and mark me as brilliant

Answer:

about 101 miles to equal the same amount as place A. (if this is daily")

Step-by-step explanation:

so how I went about this is first I added 55+0.33 because thats how much you need to drive one mile for one day with place A. and that equaled 50.30 so then I divided 50.30 by 0.55 because thats all it costs per mile for place B so I got 100.545454545 so i just rounded it up to 101

i hope im right plmn;)

Answer:

no they are not the same tax or rate because 33 cents off is company B

Step-by-step explanation:

88 cents for company A and 55 cents for company B

and company A charged a fee of 33 cents but company B did not

Answer:

3

Step-by-step explanation:

5*5=25 + 3-1=2  25+2=27

18/9=2

27/9 27/3=9  9/3=3

9/3 9/3=3  3/3=1

3/1=3

Answer:

PRQ was translated 90 degrees clockwise.

If (6,-54) is located in q4 (+,-) and rotated to land on (-6,-54) which is in q3 then it was rotated 90 degrees clockwise.

Step-by-step explanation:

My goodness, this is rather confusing in the way it is worded. Nevertheless, I will attempt to do what I can. Just please keep in mind that this is my own interpretation of the problem, and therefore could be... incorrect.

I think, to start out, we could set up the problem like so

15 + t ≥ 26

because t is not a set number.

Then all that is needed is to subtract 15 from both sides, and the equation becomes

t ≥ 11

So the resulting answer is t ≥ 11.

I hope that my interpretation helps.

-Toremi

Answer:

Step-by-step explanation:

Answer:

x = 37°

x = 40°

x = 260°

Step-by-step explanation:

To find angle x when two secants or tangents intersect outside the circle, simply subtract the smaller arc from the bigger arc and half the result.

Question 1

[tex]x=\dfrac12(128^{\circ}-54^{\circ})=37^{\circ}[/tex]

Question 2

To find the bigger arc, subtract the smaller arc from 360°

⇒ 360° - 140° = 220°

[tex]x=\dfrac12(220^{\circ}-140^{\circ})=40^{\circ}[/tex]

Question 3

The smaller arc can also be found by subtracting the external angle from 180°

Smaller arc = 180° - 80° = 100°

[tex]80^{\circ}=\dfrac12(x-100^{\circ})[/tex]

[tex]160^{\circ}=x-100^{\circ}[/tex]

[tex]x=260^{\circ}[/tex]

#1

#2

Bigger Arc=360-140=220°

#3

Smaller arc=180-80=100°

Answer:

questions 2 and 3 are correct number 7 is 40

Step-by-step explanation: