NEED HELP ASAP
Let u = ⟨9, –2⟩, v = ⟨–4, 3⟩, and w = ⟨5, 1⟩. Kelcy incorrectly determined 3u – 5(v + w) to be ⟨32, –26⟩. Review her steps as shown.

3u – 5(v + w)

3⟨9, –2⟩ – 5[⟨–4, 3⟩ + ⟨5, 1⟩]

⟨27, –6⟩ – 5[⟨–1, 4⟩]

⟨27, –6⟩ + ⟨5, –20⟩

⟨32, –26⟩

What mistake did Kelcy make?

She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.
She did not correctly distribute 3 to both components of u.
She should have distributed –5 to both v and w before adding.
She should have subtracted ⟨27, –6⟩ and ⟨5, –20⟩, rather than adding.

Answers

Answer 1

Answer:

A

Step-by-step explanation:

-4 +5 is 1 not -1 lol

Answer 2

The incorrect step where Kelcy did mistake is given by: Option A: She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.

How to add two vectors?

Suppose that two vectors are given as:

[tex]x = \: < a,b > \\y= \: < c,d >[/tex]

Then, their addition is given as:

[tex]x + y = \: < a +c , b + d >[/tex]

For this case, we can see that when Kelcy added <-4,3 > and <5,1>, she didn't add -4 and 5 correctly, as it results in +1, and not -1,

Thus, <-4,3> + <5,1> = <1,4>

Thus, wrong addition caused error in the solution.

Thus, the incorrect step where Kelcy did mistake is given by: Option A: She added ⟨–4, 3⟩ and ⟨5, 1⟩ incorrectly.

Learn more about addition of vectors here:

https://brainly.com/question/4553385


Related Questions

You randomly choose two bills from your wallet. What is the probability that they are both $20 bills. There are two 20's, one 10, two 5's, and one 1.

Answers

Answer:

2/6 or 33.33%

Explanation:

There are 6 numbers all together and 2 of them are 20$.As a fraction this would look like 2/6. 2/6 is also 33.33% of the wallet and its also the probability of pulling out a $20 bill

The probability that they are both $20 bill when There are two 20's, one 10, two 5's, and one 1 is to be considered as the 33.33%.

Calculation of the probability:

Since

You randomly choose two bills from your wallet.

And, there is 6 numbers

So, the probability is

[tex]= 2\div 6[/tex]

= 33.33%

Hence, The probability that they are both $20 bill when There are two 20's, one 10, two 5's, and one 1 is to be considered as the 33.33%.

Learn more about probability here: https://brainly.com/question/24558278

Can someone help me pls Ashley paid $5 for 2hamburgers.How much did each hamburger cost

Answers

$2.50 cuz 5 divided by 2 is 2.5

Answer:

$2.50

Step-by-step explanation:

5 divided by 2 is 2.5

Because it it money, u add a zero at the end making it 50 cents. Don't make the mistake of saying its 5 cents. 2.05 would be 5 cents. The place matters.

Find the exact value of x

Answers

Answer:

well, the value of x is unknown

What angle of rotation maps X to X”?

Answers

i believe 90 but i can be wrong

can someone type this for me so I can copy and paste​

Answers

Answer:

To solve this exercise i'll graph a plot of the room:

The diagnol of the floor of the room divides it into two right triangles, were the length of the walls represents the base and height and the dignol is the hypothenuse.

Usinf Phyagoras Theorem, that states that the square of the hypothenuse is equal to the right triangle. we can calculate the heightof thr triangle as:

Step-by-step explanation:

A recipe for chocolate chip cookies calls for 1 1/4 cups of flour. If you are making 2 1/4 recipes, how many cups of flour are needed?

Answers

☞According to the problem,

1 recipe = 5/4 cups of flour

For making 9/4 recipes,

1 : 5/4 = x : 9/4

= 1: 5 = x : 9

=x = 9/5

= x = 1 4/5

-5x + 5 ≥ 160 − 10x ?

Answers

Answer:

x≥31

Step-by-step explanation:

-5x + 5 ≥ 160 - 10x

Add 10x on both sides and subtract 5 from both sides

5x ≥ 155

Divide both sides by 5

x ≥ 31

write seven tenths in standard form

Answers

The decimal 0.7 could be pronounced as SEVEN TENTHS or as ZERO POINT SEVEN.

Answer:

The answer is 0.7

Step-by-step explanation

The answer is 0.7 because 7/10 is the same thing as 0.7

solve for x -4(2x+5)+x+2=-11

Answers

Answer:

x= -1

Step-by-step explanation:

-4(2x+5)+x+2= -11

-8x-20+x+2

-7x-18= -11

    +18  +18

-7x= 7

-7x/-7 =7/-7

x= -1

Hope this helps!

HELPPPPPP ASAPPPPP PLEASEEEEE

Answers

A.

Step-by-step explanation:

find the measure of one exterior angle of a regular hexagon.​

Answers

Answer:

240°

Step-by-step explanation:

Theres a total 720° in a hexagon which means each interior angle is 120°

blah blah blah subtract 360-120 to get the exterior angle of 240°

3.
Quadrilateral PQRS is a parallelogram. If m5 = 64, then m1 + m2 + m3 + m4 = ______


A.64

B.128

C.192
D. Impossible to tell

Answers

Answer:

(B). 128°

Step-by-step explanation:

m∠5 = m∠2 + m∠4 = 64°

Because ∠2 ≅ ∠3 and ∠4 ≅ ∠1 , then m∠1 + m∠2 + m∠3 + m∠4 = 2 × 64 = 128°

The correct answer is C

The cost of three notebooks and four pencils is 8.50. The cost of final parts and eight pages is 14.50. Determine the cost of one notebook and the cost of one pencil?

Answers

Answer: the answ is 1 nb is 2$ and a pn is $0.50.

Please help nwidnlqknwsam

Answers

Answer:

Part A: Missing Numbers are 64 and 7 going downwards

Part B: Make a TABLE representing how much money they made for 5, 6, 8 hours which they made $64

Part C: ??

Step-by-step explanation:

A song by me
Title: Bestie
Ahh mm

Bestie Bestie
Girl I don't wanna be your Bestie
I want you more than a Bestie
What is the meaning of a Bestie
Oo gee my gee
Material of a wifey
Temptations all around me you tryna get me in
My bestie
Oh what a bum bum
Imma show you where I come from
Where my Mama dey ah ah
Bestie
Me no need a man I need a Bestie
Nothing you'll do will impress me
You can't come Inna my life
Then stress me
Oh bad boy don't test me
I'm 16 don't touch don't touch me
All I wanna do is show body
As a star girl I gat money
Call my my line fighting for love boy
I gat less time
Oh what a bum bum
Show you where I come from
Where my Mama dey
Bestie♥

Answers

Answer:

ohhhhhh grlll u aare so good when it comes to writing i should be a song writer

Answer:

That's the amazing song!

65472÷2=a
487655-a=b

Answers

Answer:

a = 32736

b = 54919

Step-by-step explanation:

12 is what present of 96?

Answers

Answer:

12.5 percent

Step-by-step explanation:

Well if you do

12/96

Simplify that

to get

1/8

1/8=12.5

4:(x−2)=2:5
PLS HELP I WILL GIVE BRAINLIEST

Answers

12=x is the correct answer

Answer:

x=12

Step-by-step explanation:

4/x-2=2/5

2x-4=20

2x=24

x=12

Also If this is Jaish from geo class, HIIII

Anyone know how to do this????

Answers

Answer:

nope

Step-by-step explanation:

srry im dumb

0.075, 75%, 3/4 least to greatest

Answers

Answer:

0.075, 75%, 3/4

Step-by-step explanation:

Convert everything to decimals for ease of comparison.

0.075 ⇒ Leave as is.

75% ⇒ Divide by 100 to make it a decimal number.

= [tex]\frac{75}{100}[/tex]

= 0.75

3/4 ⇒ Divide the numerator by the denominator.

= 0.75

Put them in order of place value:

Units  tenths   hundredths  thousandths

0.          0                7                    5

0.          7                5

0.          7                5

By comparing the numbers, we can put them in the following order from least to greatest:

0.075, 75%, 3/4

I hope it helps! I would really appreciate it if you would please mark me brainliest! Have a blessed day!

0.075, 75% / 3/4 (75% and 3/4 is the same)

can anyone explain a Coefficient

Answers

Answer:

Step-by-step explanation:

If you have a variable like 4x the coefficient would be the 4 because it is being multiplied by the x or the variable. it is usually a number, but it could also be an expression.

I hope this helps

Let f(x)=1/2x-3. Suppose you subtract 6 from the input of f to create a new function​ g, and then multiply the input of function g by 4 to create a function h. What equation represents​ h?

The equation for h is h(x)=?

PLZZZZ!! I NEED HELP ASAP!!!!

Answers

Answer: h(x)=2x-6

hope this helped

The  value of h(x)= 2x- 36.

What is function?

In mathematics, a function is represented as a rule that produces a distinct result for each input x. In mathematics, a function is indicated by a mapping or transformation. Typically, these functions are identified by letters like f, g, and h. The collection of all the values that the function may input while it is defined is known as the domain. The entire set of values that the function's output can produce is referred to as the range. The set of values that could be a function's outputs is known as the co-domain.

Given:

f(x)=1/2x-3

Now, subtract 6 from the input of f to create a new function​ g

g(x)= 1/2x-3 -6

g(x)= 1/2x -9

and, multiply the input of function g by 4

h(x)= 4( 1/2x -9)

h(x) = 2x- 36

Hence, the value of h(x)= 2x- 36.

Learn more about function here:

https://brainly.com/question/12431044

#SPJ5

Write 80% as a decimal number and as a reduced fraction

Answers

Answer:

Decimal: 0.80      Reduced fraction: [tex]\frac{4}{5}[/tex]

Step-by-step explanation:

Take 80% and move the decimal two place values to the left.

This makes 0.80              (The decimal point is where the percent sign is.)

0.80 is [tex]\frac{8}{10}[/tex]  because the 8 is in the tenths place value.

[tex]\frac{8}{10}[/tex] can be simplified by dividing both the numerator and the denominator by 2.

[tex]\frac{8}{10}[/tex] = [tex]\frac{4}{5}[/tex]

please help ................

Answers

the answer is h=5
if you plug in 5 as h, you get: 15/10+15/5=4 1/2
1 1/2+3=4 1/2

Answer:

h=5

Step-by-step explanation:

2(3h) +3h/10=9/2

6h+3h=45

9h=45

h=45/9

h=5

I need help asap!!!
Please and thank you

Answers

Answer:

[tex]4\sqrt{2}[/tex]

Step-by-step explanation:

[tex]\sqrt{32}=\sqrt{16*2}=4\sqrt{2}[/tex]

5) Joe collected baseball cards for years. First year, he collected 305. Year The collected 178. Year 3, he collected 298. At the end of year 4, he had collected 1,000 baseball cards. ABOUT how many cards did he collect in year 4?*​

Answers

Answer:

The answer would be about 220 cards on the fourth year.

Step-by-step explanation:

We know the first year he collect 305,178,298.We add those and then subtarct from 1000.Since they are asking about you need to round each one.305->300  178->180  298->300 Now that you got your answer from those (780) subtract that from 1000.You should get 220.

Is 46 greater or less than -79

Answers

Answer:

46 is greater than -79

Answer:

It is greater than

Step-by-step explanation:

-79 is below 0

Which mathematical property is demonstrated?

7 + 9 + 3 = 7 + 3 + 9


A. commutative property of addition

B. associative property of addition

C. commutative property of multiplication

D. associative property of multiplication

Answers

Answer:

I believe the answer would be A

Step-by-step explanation:

Hope this helps!

Answer:

B

Step-by-step explanation:

B

please help and you will get 40 points​

Answers

Answer:

loolooloolool

Step-by-step explanation:

Answer:

3x = 40 * 3

40= x

120 juice

40 C

John want to move from point A to point B. To avoid the pond he must walk 36 m south and 49 m east. However he wants to go through the pond in order to save time. To the nearest meter calculate how many meters would be saved if John rows a boat across the pond?

Answers

Answer:

60.80

Step-by-step explanation:

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