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alexgriva [62]
3 years ago
7

Simplify -5x(x - 3y)

Mathematics
1 answer:
jenyasd209 [6]3 years ago
4 0
Start by distributing -5x into x then into -3y. So -5x times x equals -5x^2( -5x squared), then -5 times -3y, equals 15xy so your answer is -5x^2 + 15xy.
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fiasKO [112]
The answer should be 59,049 because a negative times a negative equals a positive, hope this helps
7 0
4 years ago
Is the equation true or false
Juliette [100K]

Answer:

True

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A baseball diamond is a square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 31 ft/s. (a) A
Afina-wow [57]

Answer:

13.86 ft/sec

Step-by-step explanation:

If we let x = distance batter has run at time t and  D = distance from second base to the batter at  time t, then we know \frac{dx}{dt}=31 ft/s and we want \frac{dD}{dt} when he is halfway (at x = 45).

Using Pythagoras theorem

D^2=90^2+(90-x)^2\\\text{Differentiating with respect to t}\\2D\frac{dD}{dt}=0+2(90-x)(-1)\frac{dx}{dt}\\2D\frac{dD}{dt}=-2(90-x)\frac{dx}{dt}

When x=45

D^2=90^2+(90-x)^2\\D^2=90^2+(90-45)^2\\D^2=10125\\D=\sqrt{10125}

2D\frac{dD}{dt}=-2(90-x)\frac{dx}{dt}\\2\sqrt{10125}\frac{dD}{dt}=-2(90-45)(31)\\\frac{dD}{dt}=\frac{-2(45)(31)}{2\sqrt{10125}} =-13.86ft/s

Thus, when the batter is halfway to first base, the distance between second base and the batter is  decreasing at the rate of about 13.86 ft/sec.

4 0
4 years ago
If you spend $50 (including shipping) at an online store, you recieve a $10 gift card. You want to purchase CDs that cost $12 ea
Crazy boy [7]

Four CDs must be bought to receive a gift card from an <em>online</em> store.

<h3>How to determine the least number of CDs to be bought to receive a gift card</h3>

The <em>total</em> costs are equal to the sum of the <em>shipping</em> cost and the total related to the number of <em>acquired</em> CDs (n). The number of gift cards (m) is equal to the total costs divided by <em>minimum spent</em> money, that is, $ 50. We need to solve the following inequation to find the minimum quantity of CDs:

(12 · n + 5)/50 > 1

12 · n + 5 > 50

12 · n > 45

n > 45/12

n > 3.75

Four CDs must be bought to receive a gift card from an <em>online</em> store.

To learn more on inequalities: brainly.com/question/20383699

#SPJ1

7 0
2 years ago
What is 967 divided by 60 equals???
CaHeK987 [17]

Answer:

16.11(6)

Step-by-step explanation:

967/60=16 7/60

8 0
3 years ago
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