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
Ratling [72]
3 years ago
15

Choose one of the factors of x^3 + 343.

Mathematics
1 answer:
Debora [2.8K]3 years ago
3 0

First, note that 343=7^3. Then use the formula for the sum of perfect cubes:

a^3+b^3=(a+b)(a^2-ab+b^2).

Therefore,

x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).

The quadratic trinomial x^2-7x+49 couldn't be factored anymore, so the expression x^3 + 343 has two factors x+7 and x^2-7x+49.

Answer: correct choice is A.

You might be interested in
a boat takes 2 hours to travel 15 miles upriver against the current. if the rate of the boat in still water is 12 miles per hour
liq [111]

Answer:

7 or 8 miles per hour

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The measure of arc LK is?
Oksi-84 [34.3K]

Answer:

Step-by-step explanation:

Because MK is a diameter, then angle L is a right angle. We already know that the measure of angle K is 50, so the measure of angle M has to be 40 because of the triangle angle-sum theorem. The rule for inscribed angles and the arcs they cut off is that the angle is half the measure of its intercepted arc or, likewise, the arc is twice the measure of the angle that cuts it off. Since arc LK is across from angle M and is cut off by angle M, then arc LK is twice the measure of angle M, and is 80. That's the same reason why angle L is 90; arc MK is a semi-circle, with a degree measure of 180, and angle L is half of that.

Arc LK = 80

5 0
2 years ago
Choose the property of addition that justifies the equation<br><br> 9+2=2+9
Alenkasestr [34]

Answer:

Communitive Property

Step-by-step explanation:

Communitive property is when you switch up numbers when you multiply and add but it's still the same.

4 0
3 years ago
We're working with single variable equations and I'm okay at them, but I'm rusty when it comes to using it with fractions. If an
jasenka [17]

Answer: v=-18/5

Step-by-step explanation:

Assuming you want to solve for v, we need to use our algebraic properties.

\frac{v}{3}+2=\frac{4}{5}                 [subtract both sides by 2]

\frac{v}{3}=-\frac{6}{5}                    [multiply both sides by 3]

v=-\frac{18}{5}

Now, we know that v=-18/5.

3 0
3 years ago
Wanna check out my question? :)<br> Brainliest will be marked soooo
lara [203]

Answer:

144

Step-by-step explanation:

We have 240 7th graders

60% check out fantasy books

240 *60%

240 *.60

144 will check out fantasy books

6 0
2 years ago
Other questions:
  • according to the table below, which of these is a possible income for a taxpayr filing with the single filing status 25% federal
    9·2 answers
  • What is the graph's approximate rate of change? -1/2 12 2 -2
    8·1 answer
  • Given f(x) = 3x2 + 10x - 8 and g(x) = 3x2 - 2x<br>What is (f/g)(x)?​
    5·1 answer
  • How does dividing mixed numbers compare with dividing fractions?​
    6·1 answer
  • O6. Solve the equation x2=10 a. X= +10 b. X= V10 X= +5 d. X= 5​
    12·1 answer
  • Sarah received 55 for her birthday. She used some of that money to buy 333 shirts priced at m dollars each.
    7·1 answer
  • 4. In a sample of 1000 people, 130 can wiggle their ears. Two unrelated people are
    15·1 answer
  • A commercial airplane is flying at an elevation of 15,000 feet and ascends to an elevation of 20000 feet at a rate of 1250 feet
    6·1 answer
  • What is the range of possible sides for side x?
    15·2 answers
  • Need helping asap thx
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!