1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
meriva
3 years ago
8

a student's work to distribute and simplify a radical is shown below. Select the statement which best applies to the sample math

ematical work. given (-5√20+√3)*(2+√3), i first distribute to get the expression -10√20-5√60+2√3+√9, which i can simplify to -40√5-20√15+2√3+3 for an answer. a. the student did not properly distribute the radicals b. the student overlooked combining one or more of the radical terms c. the student did not properly simplify all radicals d. the work shown above is correct
Mathematics
2 answers:
weqwewe [10]3 years ago
4 0
C), radicals siplified incorrectly
tankabanditka [31]3 years ago
3 0

Answer:

Step-by-step explanation:

Given that a student's work to distribute and simplify a radical is shown below.

Given

(-5√20+√3)*(2+√3)

The next step of distribution is

-5√60+2√3+√9 is done correctly.

Next step is

-40√5-20√15+2√3+3

I term = -10√20=-20√5

Correct answer is

Hence c) the student did not properly simplify all radicals

You might be interested in
Greg made pudding every weekend. The more times he made pudding, the more practice he gained. The time he took to make the same
VashaNatasha [74]


After Greg makes the pudding 1 time, it takes him f(1)=2(0.8) ^{1}=1.6 hours to make it.

After Greg makes the pudding 2 times, it takes him f(2)=2(0.8) ^{2}=1.28 hours to make it

After Greg makes the pudding 2 times, it takes him f(3)=2(0.8) ^{3}=1.024 hours to make it

so The function is f(x)=2(0.8) ^{x}

Answer: f of x equals 2 multiplied by 0.8 to the power of x
4 0
3 years ago
Suatu jenis roti memerlukan 150 gram tepung dan 50 gram mentega. Roti jenis lain memerlukan 75 gram tepung dan 75 gram mentega,
Katena32 [7]
Let the one type of the bread be bread A
The second type of the bread be bread B

Let the flour be 'f' and the butter be 'b'

We need 150f + 50b for bread A and 75f + 75b for bread B

We can compare the amount of flour and bread needed for each bread and write them as ratio

FLOUR

Bread A : Bread B
150 : 75
2 : 1

We have a total of 2250gr of flour, and this amount is to be divided into the ratio of 2 parts : 1 part. There is a total of 3 parts. 

2250 ÷ 3 = 750 gr for one part then multiply back into the ratio to get

Bread A : Bread B = (2×750) : (1×750) = 1500 : 750


BUTTER

Bread A : Bread B = 50 : 75 = 2 : 3

The amount of butter available, 1250 gr is to be divided into 2 parts : 3 parts.
There are 5 parts in total

1250 ÷ 5 = 250 gr for one part, then multiply this back into the ratio 

Bread A: Bread B = (2×250) : (3×250) = 500 : 750

Hence, for bread A we need 1500 gr of flour and 500 gr of butter, and for bread B, we need 750 gr of flour and 750 gr of butter.


3 0
3 years ago
Read 2 more answers
PLLLLLLLLZZZZZZ help will give brainliest
Elodia [21]

Answer:A. 3x^2-2x-1+9x+2x^2-3=5x^2+7x-4

B. 5x^3+4x^2-x-3-5x^2-7x+4=5x^3-x^2-8x+1

C. Polynomials are closed under addition and subtraction...

Step-by-step explanation:

7 0
3 years ago
Find the zeros of the following polynomial x^2-2x+1
muminat
If the polynomial is of the form x^2+bx+c (ie., no factor in front of the x^2!!) then you can look for numbers that add up to b and multiply to c.

So in this case: what two numbers, when added, give -2 and when multiplied, give 1? A little trial and error gives you -1 and -1.
So the factorization is (x-1)(x-1). This is zero for x=1. There is only one zero.
4 0
3 years ago
Read 2 more answers
Solve the problem below, simplify, add steps<br> 1/3 √21 minus 2/3 √3 * √7
iogann1982 [59]
Do you want square root? And If so then here is the answer:Rewrite <span><span>√37</span>37</span> as <span><span>√3√7</span>37</span>.<span><span>√3√7</span>37</span>Multiply <span><span>√3√7</span>37</span> by <span><span>√7√7</span>77</span>.<span><span><span>√3√7</span><span>√7√7</span></span><span>37⁢77</span></span>Simplify.        And in the end of, this I put  the decimals.√<span><span>217</span><span>217</span></span>The result can be shown in both exact and decimal forms.Exact Form:<span><span><span>√21</span>7</span></span>Decimal Form:<span>0.65465367<span>… not sure this answer.
</span></span>
4 0
3 years ago
Other questions:
  • How much yards of highway do they need to repave?
    10·2 answers
  • In triangle ABC, the segments drawn from the vertices intersect at point G. Segment FG measures 6 cm, and segment FC measures 18
    5·2 answers
  • June served 4/9 of 18 liters of fruit punch. How many liters does she have left?
    12·2 answers
  • A triangle drawn on a map has sides of lengths 8 centimeters,12 centimeters, and 14 centimeters.the shortest of the correspondin
    8·1 answer
  • Describe a possible sequence of translations for (x,y) (-x-2,y+)
    6·1 answer
  • During the rock cycle, rocks get broken apart by weathering, carried along by erosion, and eventually deposited in a body of wat
    14·2 answers
  • At a bake shop, the cost of flour is $2.50 per pound and increases at a rate of $0.07 per month. The cost of cocoa is $6.00 per
    8·1 answer
  • What is the z-score of a data value that is 3 standard deviations to the left of the mean?
    11·1 answer
  • Yeah I don’t know this
    6·1 answer
  • Solve only if you know the answer : 2/f * 5/8
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!