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Tomtit [17]
3 years ago
9

10. When Raphael solved the system below by using the method of elimination, he changed the second equation

Mathematics
1 answer:
kirill115 [55]3 years ago
4 0

Answer:

e we'll

Step-by-step explanation:

second equation

to –8x – 2y =-2. What property justifies this manipulation?

8x + 3y = 7

4x + y =1

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Circle X is shown in the diagram.
GaryK [48]

Answer:

m<1 = 1/2(a+b)

Step-by-step explanation:

First, you have to add the two different side angles and then divide by two. I just took my quiz and got this.

7 0
3 years ago
The variance Var(x) for the binomial distribution is given by equation :
aliina [53]

Answer: d. np(1 - p).

Step-by-step explanation:

Let x be any binomial variable which represents the number of success such that X\sim B(n, p) , where n is the sample size or the total number of trials and p is the probability of getting success in each trial .

Then, the mean E(x) and the variance Var(x) for the binomial distribution is given by equation :

E(x)=\mu=np

Var (x)=\sigma^2=np(1-p)

where n is the sample size or the total number of trials and p is the probability of getting success in each trial .

Therefore , the correct option is option d. np(1 - p) .

6 0
3 years ago
Please help me with finding both area and perimeter of the shape.
VladimirAG [237]
Perimeter=106ft
Area=448ft^2

Make sure you remember to subtract various values to find the length of missing sides.
6 0
3 years ago
Convert each function to standard form<br>31) y=(x + 2)2 + 1​
vlada-n [284]

The standard form of a parabola is

y=ax^2+bx+c

So, if you expand the square, you get

y=(x+2)^2+1 = x^2+4x+4+1 = x^2+4x+5

which is the standard form

6 0
3 years ago
A hubcap has a radius of 40 inches. What is the area of the hubcap?
ra1l [238]

Answer:

5024

Step-by-step explanation:

40= radius

40x40x3.14=5024

hope it helps u ;-;

5 0
3 years ago
Read 2 more answers
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