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topjm [15]
3 years ago
7

Multiply -4x^-2y(2yx^3+6xy^3-3y^3x4)

Mathematics
1 answer:
Alenkinab [10]3 years ago
8 0

Answer:

below here hopes it helps!

Step-by-step explanation:

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Brett works at a local pet store. When he works 5 hours he earns $25. When he works 10 hours he earns $50. What is the rate per
vampirchik [111]

Answer:

$5 per hour

Step-by-step explanation:

25/5 = 5

10*5 = 50

8 0
3 years ago
Which of these true conditional statements has a false converse?
cestrela7 [59]
Correct answer is A. For example 50/2= 25 which is odd
4 0
4 years ago
All three please 10 points
GaryK [48]

Answer:

A) x = 3 or -1

B) x = -7

C)x = -7

Step-by-step explanation:

A) x² + 2x + 1 = 2x² - 2

Rearranging, we have;

2x² - x² - 2x - 2 - 1 = 0

x² - 2x - 3 = 0

Using quadratic formula, we have;

x = [-(-2) ± √((-2)² - 4(1 × -3))]/(2 × 1)

x = (2 ± √16)/2

x = (2 + 4)/2 or (2 - 4)/2

x = 6/2 or -2/2

x = 3 or -1

B) ((x + 2)/3) - 2/15 = (x - 2)/5

Multiply through by 15 to get;

5(x + 2) - 2 = 3(x - 2)

5x + 10 - 2 = 3x - 6

5x - 3x = -6 - 10 + 2

2x = -14

x = -14/2

x = -7

C) log(2x + 3) = 2log x

From log derivations, 2 log x is same as log x²

Thus;

log(2x + 3) = logx²

Log will cancel out to give;

2x + 3 = x²

x² - 2x - 3 = 0

Using quadratic formula, we have;

x = [-(-2) ± √((-2)² - 4(1 × -3))]/(2 × 1)

x = (2 ± √16)/2

x = (2 + 4)/2 or (2 - 4)/2

x = 6/2 or -2/2

x = 3 or -1

5 0
3 years ago
tony bought 288 1 inch nails and 5 boxes of 2 inches. each box of 2 inch nails had equal amount of nails in them. he bought a to
Vitek1552 [10]

Answer:

each box has 52 in it

Step-by-step explanation:

first you subtract 288 from 548  =260

this is the total number of nails minus the total 1 inch nails

then you divide 260 by 5 because he has five boxes of 2 inch names which means that you have to account for the even number of nails in each box

6 0
3 years ago
Read 2 more answers
A car travels at a speed of 10 m/s - how far does it travel in 10 seconds?
sweet-ann [11.9K]

Answer:

It can cover a distance of 100m.

Step-by-step explanation:

Given that:

Speed = v = 10m/s

Time = t = 10s

We know that:

Distance = Speed * Time

d = v*t

d = (10m/s)*(10s)

d = 100m

3 0
3 years ago
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