A classmate says that the expression -5r(6s) can be expanded to - 30r - 5rs. Explain his error

( WHOEVER ANSWER THEY GET 73 POINTS ! )

Answers

Answer 1
-5r(6s) would be -30rs because everything outside of the parentheses must be multiplied by everything inside the parentheses. -5r times 6s would be -30rs because -5 times 6 is thirty and when combining variables for an answer you would get rs whicg combine for -30rs

Related Questions

what is the volume???

Answers

Answer:

80 cm^3

Step-by-step explanation:

In order to find the volume of an object, you must multiply the length x width x height of the object. In the case of this pyramid, you also must multiply by 1/3 in the end. This looks like 5x6x8x(1/3) = 80 cm^3

Answer:

I got 240 but I'm not sure if that is correct

Step-by-step explanation:

volume is the space inside and you find out with length x width x height and that's what I did. I guess the number just seems high

DUE in a couple of minutes!!help me out with this question (geometry)

Answers

Angle 1 for the measurement it is going to be 58 degrees if that’s what you are looking for and if you are the equation is going to be 6(8)+10 and that will give you 58

find the area of the rectangle
14 by 6

Answers

Answer:

84 units

Step-by-step explanation:

14 times 6 equals 84

It takes 9 hours for 8 men to paint a room,
How many men would be needed to paint the room in 4 hours?

Answers

Answer:

6 people

Step-by-step explanation:

Factor 21x^2 - 37x + 12

Answers

answer: (7x-3)(3x-4), rewrite 37x as 9x-28x and factor out 3x from 21x^2-9x. then factor out 7x-3 and you should be good. i hope this helped!

Graph the equation y = -7/2x+2 on the coordinate plane.

Answers

Answer:

2y ( -5,2)

Step-by-step explanation:

you start at 2y and go down 7 times and move 2 times left

A recipe for cookies requires 1 ⅔ cup of milk. How many cups of milk are needed for 4 batches of the recipe?

Answers

Answer:

6 2/3

Step-by-step explanation:

1 2/3 *4= 4 8/3 ---->6 2/3

determine the missing angle ​

Answers

Answer:

46°

Step-by-step explanation:

These angles are same-side supplementary, therefore they add up to 180°.

180 - 134 = 46°.

pls help need it ASAP
will give brainlist
:)

Answers

Step-by-step explanation:

Given

5x + 2y = 16 .....i)

x + 2y = 4 .....ii)

Subtracting equation I) and ii) we get

5x + 2y = 16

x + 2y = 4

- - -

4x = 12

x = 3

Putting x = 3 in equation ii)

3 + 2y = 4

2y = 4 - 3

y = 1/2

x =3 and y = 1/2

Hope it helps :)

Answer:

1) x=2 y=3 2) x=2 y=1

Step-by-step explanation:

An amusement park reduced its admission price to $15.50 per day, but now charges $1.50 per ride. Mark has $26 to spend on admission and rides. Write and solve an equation to find how many rides Mark can ride in one day.

Answers

Equation (26.00-15.50) ÷1.50

Answer 7 rides

Solve $26 minus $15.50 equal $10.50 then divide 10.50 by 1.50 and you’ll get 7

.Find the value of 4st - 2t if t = 3 and s = 2.
A. 24
B. 20
C. 18
D. 12

Answers

Answer:

C) 18

Step-by-step explanation:

4st - 2t

4(2)(3) - 2(3)

24 - 6

18

need HELP!
........m​

Answers

Answer:

7/8

Step-by-step explanation:

turn 1/4 denominator into 8 and by doing that, u multiply by 2.

whatever you do to the bottom, u do to the top. so 1/4= 2/8

5/8+2/8= 7/8

5/8  +  1/4 = 37/20

37/20=1 y 17/20

please help. sad moment.

Answers

Answer:

10

Step-by-step explanation:

The radius is half the diameter

Answer:

d) 10in is the answer

Step-by-step explanation:

step 1 - Radius is half of the diameter.

step 2 - 20 ÷ 2 = 10

step 3 - Hence the answer is 10in.

Hope it helps,

Please mark me as the brainliest

Thank you

A principal wants to know if students at a particular high school are in favor of a new dress code at their school. The principal is not able to ask the opinion of every student at the school, so she needs to select an appropriate sample of the students to represent the high school.
​Select which sample of students the principal should choose.
A
Students randomly selected from a list of all students at the school.
B
Students sitting at randomly selected tables in the library.
C
Students she selects from the hallway between classes.
D
Students selected by the teachers.

Answers

Answer: i would say D but i have no idea, it makes the most sence to me

Can someone help with this?

Answers

Answer:

I think the answer of X is 2

Step-by-step explanation:

i said think ok

have a nice week

[o]-[o]

\___/

Answer:

x=2

Step-by-step explanation:

Going from 6 to 4 means you have to dilate by 2/3.

(2/3)*6=4

(2/3)*3 is 2

can somebody verify this for me?


5f + 3n + 2

use f = -4 and n=-7

answer is -43

is this correct? yes or no?

Answers

Answer:

no

Step-by-step explanation:

5(-4)+3(-7)+2= -20-21+2=-39

Find the missing part.

Answers

Answer:

15

Step-by-step explanation:

9/6=x/10

why? they segments are similar

Luke's car depreciates in value by 12% per year.

Luke bought his car for £18000

Work out how much his car will be worth after 4 years.

Answers

Answer:

£9360

Step-by-step explanation:

£18000× 12 ÷100 = £2160

£2160 × 4 = £8640

£18000 - £8640 = £9360

Therefore his car will be worth £9360 after 4 years

The graph of y = 4x2 - 4x – 1 is shown.
Use the graph to find estimates for
the solutions of
i) 4x2 - 4x – 1 = 0
ii) 4x2 - 4x - 1 = 2

Answers

Answer:

i) The approximate solutions are: [tex]x_{1} \approx -0.207[/tex], [tex]x_{2} \approx 1.207[/tex].

ii) The approximate solutions are: [tex]x_{1}\approx -0.5[/tex], [tex]x_{2} \approx 1.5[/tex].

Step-by-step explanation:

i) The best approach to estimate graphically the solution of [tex]4\cdot x^{2} - 4\cdot x - 1 = 0[/tex] is graphing the following system of equations:

[tex]y = 4\cdot x^{2}-4\cdot x - 1[/tex] (1)

[tex]y = 0[/tex] (2)

And labeling the points in which both intersects each other. We include the result in the image 'solution-i'. The approximate solutions are: [tex]x_{1} \approx -0.207[/tex], [tex]x_{2} \approx 1.207[/tex].

ii) The best approach to estimate graphically the solution of [tex]4\cdot x^{2} - 4\cdot x - 1 = 2[/tex] is graphing the following system of equations:

[tex]y = 4\cdot x^{2}-4\cdot x - 1[/tex] (1)

[tex]y = 2[/tex] (2)

And labeling the points in which both intersects each other. We include the result in the image 'solution-ii'. The approximate solutions are: [tex]x_{1}\approx -0.5[/tex], [tex]x_{2} \approx 1.5[/tex].

Which of the following is equal to 10.6 ÷ 2?
A.
(10 ÷ 2) + (0.6 ÷ 2)
B.
(10 ÷ 2) + (2 ÷ 0.6)
C.
(10 ÷ 2) - (6 ÷ 2)
D.
(10 ÷ 2) - (0.6 ÷ 2)

Answers

Answer:

[tex]\huge\boxed{\sf Option\ A }[/tex]

Step-by-step explanation:

10.6 ÷ 2 = 5.3

Now,

Part A)

(10 ÷ 2) + (0.6 ÷ 2)

= 5 + 0.3

= 5.3

No need to solve other parts. The correct option is A.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807
A. (10÷2) + (0.6 ÷2)

20 POINTS

On the news yesterday, the weather forecaster’s rainfall prediction was 20% off. If 2.5 inches of rain actually fell today, what are the two rainfall predictions that could have been made during the weather forecast?

Giving brainliest to the BEST EXPLAINED answer. All answers that are irrelevant to the question will be reported and removed.

Middle School Math
REPOST AS THE OTHER ONE GOT SNIPED

Answers

Answer: 2 inches, 3 inches, or 3.125 and 2.083


Explanations:
The simplest way is to take 20% of the 2.5 inches and go that much above & below 2.5 inches.

2.5 x 20% = 2.5 x 0.20 = 0.5

So 2.5 - 0.5 = 2 inches was predicted
And 2.5 + 0.5 = 3 inches was predicted.

The more complicated way is to see number + 20% of that number = 2.5, and what number - 20% = 2.5.

Which solution sounds more like what you’re doing in class right now?

If it’s the more complicated way:

0.8x = 2.5 (80% of the predicted rain value equals 2.5)
x = 3.125 inches was predicted

1.2x = 2.5 (120% of the predicted rain value equals 2.5)
x = 2.083 inches was predicted

Sorry, this is probably confusing. Let me know what questions you have.

What is the measure of DC??

Answers

Answer:

113 - L O L Z - but its a obtuse angle

Step-by-step explanation:

HERE IS THE FULL QUESTION LOL GET IT RIGHTT PLZZ

Answers

9514 1404 393

Answer:

  14,060 ft

Step-by-step explanation:

On day 2, the group climbed ...

  19660 -16860 = 2800 . . . . feet

The problem statement tells us they climbed that same amount on day 1, so they must have started at ...

  16860 -2800 = 14,060 . . . . feet

The group began their climb at 14,060 feet.

What is 792 divided by 44

Answers

The answer is 18

792/44 = 18

The height of a football y in feet is given
by the function y=-16x² + 56x+ 2
where x is the time in seconds after the
ball was kicked. This function is
graphed below. How long was the
football in the air?

(Show work please if possible.)

Answers

Lol I don’t understand the question it’s not clear!

A triangle has angle measures of 95° and 65° What is the measure of the third angle

Answers

The third angle is 20°. This is because you add the two angles you have already (95+65) and then you subtract that from 180. In simplier words: If you know 2 angles then you can subtract their sum from 180° to find the measure of the 3rd angle.

Choose values for horizontal and vertical translation to move triangle ABC. Use the tool to translate the figure in both the x and y directions. y Horizontal Translation 4 C 2 Vertical Translation Which statements are true about the image? The triangle flipped upside down. The sides stayed the same length. The angles stayed the same size. The triangle completed a quarter turn. -2. Reset -2 A B -48.​

Answers

Answer:The sides stayed the same length

The angles stayed the same size

Step-by-step explanation:

Identify the translations.

The orange triangle, A, is the pre-image.

The pre-image moved

✔ 5

units horizontally to form the purple triangle, B.

The pre-image moved

✔ 4

units vertically to form the green triangle, C.

Multiple Choice

Look at the graph.

The graph shows a line through the points left parenthesis negative 1 comma negative 2 right parentheses and left parenthesis 2 commas 1 right parenthesis.

The slope of the line is _______.
A. positive
B. negative
C. zero
D. undefined

Answers

Answer:

the slope is POSITIVE (answer A)

Step-by-step explanation:

The line goes through: (-1, -2)  and ( 2, 1)

Then the slope can be calculated as:

slope = (y2 - y1) / (x2 - x1)

in our case:

slope = (1 - -2) / (2 - -1) = (1 + 2) / (2 + 1) = 3 / 3 = 1

Therefore, the slope is POSITIVE (answer A)

In triangle RST the vertices have coordinates of R(-1,10),S(5,4)and T (-4,-2). If the midpoints of side RS and RT were connected with a segment, what would the slope of this segment be?


Plz helppp

Answers

Answer:

[tex]\frac{2}{3}[/tex]

Step-by-step explanation:

Midpoint of a line segment joining points [tex](x,y)[/tex] and [tex](u,v)[/tex] is given by [tex](\frac{x+u}{2},\frac{y+v}{2} )[/tex]

Points are R(-1,10),S(5,4)and T (-4,-2).

Midpoint of RS = [tex](\frac{-1+5}{2},\frac{10+4}{2} )=(\frac{4}{2},\frac{14}{2} )=(2,7 )[/tex]

Midpoint of RT = [tex](\frac{-1-4}{2},\frac{10-2}{2} )=(\frac{-5}{2},\frac{8}{2} )=(\frac{-5}{2},4)[/tex]

Slope of a line joining points [tex](a,b)[/tex] and [tex](c,d)[/tex] is given by [tex]\frac{d-b}{c-a}[/tex]

Slope of line joining midpoints of side RS and RT = [tex](\frac{4-7}{\frac{-5}{2}-2 })=(\frac{-3}{\frac{-9}{2} })=\frac{2}{3}[/tex]

Simplify, Show work
1: 2i^20 + i^42
2: i^101 - i^2

Answers

Answer:

1. i^20 X (2+i^22)

2. i² X (i¹¹-1) X (i²² + i¹¹ + 1) X (i^66 + i³³ + 1)

Step-by-step explanation:

1) 2i^20 + i^42

factor out i^20

i^20 X (2 + i^22)

2) i^101 - i²

i²X(i^99-1)

i²X(i³³-1)X(i^66+i³³+1)

Using a³-b³=(a-b)(a²+ab+b²)

i²X(i¹¹-1)X(i²²+i¹¹+1)X(i^66+i³³+1)

i²X(i¹¹-1)X(i²²+i¹¹+1)X(i^66+i³³+1)

I almost gave up typing. Quite stressful, but its fine

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