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2 years ago

PLEASE HELP WILL MARK BRAINLIEST THANK YOU

Mathematics

1 answer:

Free_Kalibri [48]2 years ago

5 0

Here is the answer: x=4

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Factor 8x3 − 343.

Sunny_sXe [5.5K]

Answer:

A) (2x − 7) (4x² + 14x + 49)

C) (3x + 5) (9x² − 15x + 25)

Step-by-step explanation:

Sums and differences of cubes factor as:

a³ + b³ = (a + b) (a² − ab + b²)

a³ − b³ = (a − b) (a² + ab + b²)

8x³ − 343 is a difference of cubes.

(2x)³ − 7³

(2x − 7) (4x² + 14x + 49)

27x³ + 125 is a sum of cubes.

(3x)³ + 5³

(3x + 5) (9x² − 15x + 25)

6 0

3 years ago

Please help me! See attached file on the side or up top where ever it is

Amanda [17]

Area of semicircle = 1/2 x pi x radius x radius
radius of semicircle = 14/2 = 7
pi = 3.14 for this question, so

1/2 x 3.14 x 7 x 7 = 76.93
area = 76.93

8 0

4 years ago

Read 2 more answers

PLEASE HELP! I WILL MARK YOU AS BRAINLEIST!

valkas [14]

Answer:

Step-by-step explanation:

per abcf=20

2×(6+bc)=20

bc=4

A=(base +base /2)×h=

(5+3/2)×6=24

8 0

3 years ago

Read 2 more answers

Students in grade6, 7 and 8 sold a total of 320 concert tickets.

Luba_88 [7]

Answer:

x=320+t-s

Step-by-step explanation:

8 0

3 years ago

Dan is comparing the cost of having printed and prepared by two companies

Kay [80]

For 4 copies, the total cost for preparing and printing will be the same.

Step-by-step explanation:

Let,

p be the number of pages

Company A;

Charges of preparing = $6

Charges of per page print = $2.50

A(p)= 2.50p + 6 Eqn 1

Company B;

Charges of preparing = $4

Charges of per page print = $3

B(p)= 3p + 4 Eqn 2

For equaling the cost;

A(p) = B(p)

$2.50p+6=3p+4\\2.50p-3p=4-6\\-0.50p=-2$

Dividing both sides by -0.50

$\frac{-0.50p}{-0.50}=\frac{-2}{-0.50}\\p=4$

For 4 copies, the total cost for preparing and printing will be the same.

Keywords: Addition, division

Learn more about division at:

#LearnwithBrainly

8 0

4 years ago