All categories

3 years ago

If a- b= 2 and ab= 15 then a3-b3?a) 30 b) 98 c) 20 d) 60full explanation please

Mathematics

2 answers:

krek1111 [17]3 years ago

7 0

Answer:

C) 20

Step-by-step explanation:

ab=15

5*3 = 15

which is a and which is b

a - b = +2

5 - 3 = + 2

------------------

a = 5 and

b = 3

------------------

a3-b3 = 53 - 33 = 20

seraphim [82]3 years ago

6 0

Answer:

The answer is 98

Step-by-step explanation:

A = 5

B = 3

a_b = 2

a × b = 5 × 3 = 15

A3 _ b3 =(5) bower 3 _ (3) power 3 = 98

You might be interested in

Help asap my last question GIVING BRAINLIST!!!!

Alex

Answer:

1) $x < 0$

2) $x > 0$

3) $x < 10$

4) $x < -\frac{31}{55}$

5) $x \geq 0$

6) $x \geq -1$

Step-by-step explanation:

1) $-3 > 2x -3$

$2x- 3 < -3$

$2x - 3 + 3 < -3 +3$

$2x < 0$

$\frac{2x}{2} < \frac{0}{2}$

$x < 0$

2) $5 > -x + 5$

$-x + 5 < 5$

$- x + 5 -5 < 5 - 5$

$-x < 0$

$\frac{-x}{-1} < \frac{0}{-1}$

$x > 0$

3) $\frac{x}{5} -2 < 0$

$5 \times (\frac{x}{5} - 2 ) \times 5 < 0$

$x - 10 < 0$

$x -10 + 10 < 0 +10$

$x < 10$

4) $-5x + 11 > 31$

$-5x \cdot 11 < 31$

$-55x < 31$

$\frac{-55x}{-55} > \frac{31}{-55}$

$x < -\frac{31}{55}$

5) $\frac{1}{2}x - 4 \geq -4$

$\frac{1}{2}x -4 +4 \geq -4 +4$

$\frac{1}{2}x \geq 0$

$\frac{\frac{1}{2}x }{\frac{1}{2} } \geq \frac{0}{\frac{1}{2} }$

$x \geq 0$

6) $-4x + 2 \leq 6$

$-4x +2 - 2 \leq 6 -2$

$-4x < 4$

$\frac{-4x}{-4} \leq \frac{4}{-4}$

$x \geq -1$

6 0

3 years ago

You lose an online auction for an autograph. Your losing bid of $28 is 40% of the winning bid. How much less was your bid than t

TEA [102]

Answer:

My bid was $42 less than the winning bid.

Step-by-step explanation:

The winning bid is x.

$28 is 40% of x

0.4x = 28

x = 28/0.4

x = 70

The winning bid was $70.

$70 - $28 = $42

Answer: My bid was $42 less than the winning bid.

5 0

2 years ago

WILL MARK BRAINLIEST PLS HELP<br> Will these side lengths make a triangle? 5 yds, 6 yds, 5 yds

Elina [12.6K]

Answer:

Yes!

Let the height of the triangular shaped garden be h yards. Its base would then be 5+h yards.Step-by-step explanation:

4 0

3 years ago

Another brainliest if its right

tekilochka [14]

Answer:

16 : 14 = 30 : 26.25

Step-by-step explanation:

If rounded:

16 : 14 = 30 : 26

8 0

2 years ago

Read 2 more answers

Find area of a rectangle that measures 18yd by 14yd

adell [148]

Answer:

32.

Step-by-step explanation:

5 0

3 years ago

If a- b= 2 and ab= 15 then a3-b3?a) 30 b) 98 c) 20 d) 60full explanation please​

If a- b= 2 and ab= 15 then a3-b3?a) 30 b) 98 c) 20 d) 60full explanation please