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4 years ago

3x^2 - 4X -3 discreet or continuous

1 answer:

6 0

Discrete And this how A discrete variable is a variable whose value is obtained by counting. A continuous variable is a variable whose value is obtained by measuring. A random variable is a variable whose value is a numerical outcome of a random phenomenon. A discrete random variable X has a countable number of possible values.

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Measure of angle 7 = 2x+15<br> measure of angle 8 = 3x

lina2011 [118]

7 = 2x + 15

<7

Subtract by 15

-8 = 2x

Divide by 2

-4 = x

<8

8 = 3x

divide by 3

8/3 = x

5 0

4 years ago

Read 2 more answers

One fifth of a number plus one third of a different number

skad [1K]

1/5x+ 1/3y would be the correct response.

3 0

3 years ago

ANSWER ASAP FOR BRANLIEST

salantis [7]

Answer:

Well, I can't say which of the following combinations, because I can't see what you see. But I will list some equivalent ratios & hope one fits. If it doesn't, maybe type in the comments what the choices are & I can help more.

Step-by-step explanation:

2:5

4:10

6:15

8:20

10:25

12:30

14:35

5 0

3 years ago

Two airplanes are carrying food and medical supplies to a country in need. One airplane is carrying 63 meals and 57 medical kits

Tju [1.3M]

Answer:

63m + 57k = 714 ____________ (1)

78m + 57k = 789 ____________(2)

The price of one meal is $5

Step-by-step explanation:

Let the price of one meal be m.

Let the price of one medical kit be k.

One airplane is carrying 63 meals and 57 medical kits and the total cost for those supplies on that airplane is $714.

This means that:

63m + 57k = 714 ____________ (1)

The other airplane is carrying 78 meals and 57 medical kits and the total cost for the supplies on that airplane is $789.

This means that:

78m + 57k = 789 ____________(2)

We now a system containing two linear equations that can be used to solve to problem:

63m + 57k = 714 ____________ (1)

78m + 57k = 789 ____________(2)

To find the price of one meal, we subtract equation (1) from (2) and simplify:

78m + 57k = 789

<u>- 63m + 57k = 714 </u>_

15m = 75

=> m = 75 / 15 = $5

The price of one meal is $5

6 0

3 years ago

If an object is propelled upward from a height of 72 feet at an initial velocity of 90 feet per second, then its height h after

kifflom [539]

Answer:

6.34 seconds.

Step-by-step explanation:

The object will hit the ground when h = 0.

-16t^2 + 90t + 72 = 0

8t^2 - 45t - 36 = 0

We can then use the quadratic formula to solve.

[please ignore the A-hat; that is a bug]

$\frac{45±\sqrt{45^2 - 4 * 8 * -36} }{2 * 8}$

= $\frac{45±\sqrt{2025 + 1152} }{16}$

= $\frac{45±\sqrt{3177} }{16}$

= $\frac{45±56.36488268}{16}$

(45 - 56.36488268) / 16 = -0.7103051678

(45 + 56.36488268) / 16 = 6.335305168

Since the time cannot be negative, the object will hit the ground after about 6.34 seconds.

Hope this helps!

4 0

3 years ago