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mestny [16]
3 years ago
10

4 (2(-2) + 3(3) -2(4.2)

Mathematics
1 answer:
12345 [234]3 years ago
7 0

Answer:

-15.4

Step-by-step explanation:

4(2(-2)) + 3(3) - 2(4.2)

Multiply the numbers in the parentheses first because of PEMDAS.

4(-4) + 9 - 8.4

-16 + 9 - 8.4

Now add the numbers together.

-15.4

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For a function,x cannot what <br><br> a) repeat<br><br> b) multiply
Dovator [93]

Answer:

A ::repeat

Step-by-step explanation:

A function is a relation in which the members of the domain (x-values) DO NOT repeat. So, for every x-value there is only one y-value that corresponds to it. y-values can be repeated.

3 0
3 years ago
In the system shown below, what are the coordinates of the solution that lies in quadrant I?
Arisa [49]

Answer:

(4,3)

Step-by-step explanation:

Given

x^2+y^2=25

x-y^2=-5

In order to solve the equations, from equation 2 we get

-y^2= -5-x

y^2=5+x

Putting the value of y^2 in equation 1

x^2+5+x=25

x^2+5-25+x=0

x^2+x-20=0

x^2+5x-4x-20= 0

x(x+5)-4(x+5)=0

(x+5)(x-4)=0

So

x+5=0  x-4=0

x=-5   x=4

Now for x=-5

x^2+y^2=25

(-5)^2+y^2=25

25+y^2=25

y^2=25-25

y^2=0

so Y=0  

And for x = 4

x^2+y^2=25

(4)^2+y^2=25

16+y^2=25

y^2=25-16

y^2=9

y= ±3

So the solution to the system of equations is

(-5,0) , (4,3), (4,-3)

The only solution that belongs to first quadrant is (4,3)

4 0
3 years ago
Read 2 more answers
Please answer if correct you get brainiest
il63 [147K]

Answer:

1. A.) Blocks a river and creates a large lake

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8 0
3 years ago
Find the inverse f-1(x) for the given function f(x)=2x-5
skad [1K]

Answer:

Find the inverse f-1(x) for the given function f(x)=2x-5

Step-by-step explanation:

To find the inverse, interchange the variables and solve for  y

 f ^− 1 ( x ) = x /2 + 5/2

7 0
3 years ago
What requirements must be​ satisfied? select all that apply.
IrinaK [193]
In order to satisfy the requirement, this are the following that is required;First, at least one observation must be above or below 90 seconds. Second is ether the population is normally distributted or greater than (>) 30, or maybe both.
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