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mihalych1998 [28]
3 years ago
14

Pls this is my last question !!

Mathematics
2 answers:
Y_Kistochka [10]3 years ago
7 0

Answer:

the 1st 2nd and last one

Step-by-step explanation:

emmainna [20.7K]3 years ago
3 0

Answer:

The first one, the third and the fourth one.

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The product of negative three and a number. Please translate.
ZanzabumX [31]

Answer:

-3n

Step-by-step explanation:

"The product of negative three and a number." can be written as -3n, or -3 * n, where n is "the number".

6 0
3 years ago
How many kilograms of coffee worth 40/kg must be mixed with coffee worth $11/kg to give 12kg of coffee worth $9.50/kg
Kazeer [188]

Answer:

0.62kg

Step-by-step explanation:

Let

x = 40/kg coffee

y = 11/kg coffee

two equations can be derived from the question

x + y = 12 equation 1

40x + 11y = 114 (9.5 x 12)  equation 2

multiply equation 1 by 11

11x + 11y = 132 equation 3

subtract eqn 3 from eqn 2

29x = 18

divide both sides of the equation by 29

x = 0.62kg

4 0
2 years ago
Which of the following cannot be used to state a postulate?
liubo4ka [24]
Among the four choices, theorems is the best possible answer. Postulate, by definition, is a statement that is assumed to be true without proof while theorems are true statements that can be proven. Both of these types of statements are used to justify geometrical equations, illustrations and statements.
6 0
3 years ago
Use the function f(x) = 2x2 − 3x − 5 to answer the questions.
Dovator [93]

Answer:

see below

Step-by-step explanation:

A:  2x² - 3x - 5

    (2x - 5)(x + 1)

B:  Set the factored equation equal to zero and solve for x.

(2x - 5)(x + 1) = 0

2x - 5 = 0

2x = 5

x = 5/2

x + 1 = 0

x = -1

The x-intercepts are 5/2 and -1

C)  To find the end behavior, you need to look at the term in the unfactored equation with the highest exponential number.  For this equation, that is 2x².  Since the exponent is positive,  both ends of the graph will point in the same direction.  Because the leading coefficent is positive, the graph will point upwards.  The end behavior of the graph is that as the x-values approach both ∞ and -∞, the function approaches ∞.

D)  Since we know that the x-intercepts are 5/2 and -1, you can plot these points.  You also know that the graph will be in an upward U shape.  Plug in  a couple x-values and plot them to make the graphing of the equation more accurate.

5 0
3 years ago
There are 75 Skittles in the bowl and you know that 15 of them are green, your favorite flavor (strawberry!) What is the probabi
Naya [18.7K]

Answer:

chances are 1/10. Can you please make me brainliest?

Step-by-step explanation:

divide 75/15, get 5, multiply by 2, get 10, so chances are 1/10

8 0
3 years ago
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