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3 years ago

Solve (−3) ⋅ 2 please help

2 answers:

6 0

Your answer is going to be a negative , anytime you have a negative times to a positive ,your answer will always mostly likely be negative , in this case your answer is -6

den301095 [7]3 years ago

3 0

Answer:

-6

Step-by-step explanation:

3*2=6

so the opposite of 6 is -6

Also a negetive times a positive is always a negetive number

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Y=-x+7

Allisa [31]

Question 1:
y=-x+7
y=2x-2

(-x+7)=2x-2
-x+7+x=2x-2+x
7=2x-2+x
7+2=2x-2+x+2
9=3x
9/3=3x/3
3=x

y=-x+7
y=-(3)+7
y=4

Question 2:
y-1=2x
y+2x=5

y-1=2x
y-1+1=2x+1
y=2x

(2x+1)+2x=5
2x+1+2x=5
4x+1=5
4x+1-1=5-1
4x=4
4x/4=4/4
x=1

y-1=2(1)
y-1+1=2+1
y=3

Answer: x=1 y=3

6 0

3 years ago

What is the probability that from a normal 52 card deck, you randomly draw a 5, and then without replacement, you select a Queen

Mamont248 [21]

Answer:

1 / 663

Step-by-step explanation:

First, let's find the total number of ways you can pick 2 cards from the deck. This is 52 * 51 = 2652 because there are 52 cards available for your first pick, and after you pick one, you'll have 51 left for your second pick.

There are 4 5's (one for every suite) and only 1 Queen of Hearts in a deck of cards. Therefore, the total number of successful outcomes will be 4 * 1 = 4.

The probability of picking a 5 and then a Queen of Hearts is 4 / 2652 =

1 / 663. Hope this helps!

6 0

3 years ago

there are four seventh grade math teachers at central middle school mr. abott teaches 120 students in 6 classes mrs. garcia teac

Mumz [18]

You see what the average is in each class. (Divid students and classes) and add them together and divid by four. You should get 18 if you round to the whole number.

4 0

3 years ago

PLS HELP!!

schepotkina [342]

Option a: Quadratic expression

Explanation:

The expression is $-2x^{2} +11$

Option a: Quadratic expression

The quadratic expression is an expression in which the highest power or degree of a variable is 2.

Thus, from the expression $-2x^{2} +11$ the highest power of the variable is 2.

Hence, the expression is quadratic

Option a is the correct answer.

Option b: Linear expression

The linear expression is of the form $y=mx+b$

Since, the expression $-2x^{2} +11$ is not of the form $y=mx+b$ , it is not a linear expression.

Hence, Option b is not the correct answer.

Option c: Cubic expression

The cubic expression is an expression in which the highest power or degree of a variable is 3.

Since, the expression $-2x^{2} +11$ does not have the highest power 3, it is not a cubic expression.

Hence, Option c is not the correct answer.

Option d: Exponential expression

The exponential expression indicates the number of times the base is used as a factor.

Since, the expression $-2x^{2} +11$ does not indicates the number of times the base is used as a factor, it is not exponential expression.

Hence, Option d is not the correct answer.

3 0

3 years ago

Points X and are endpoints of a diameter of OW. Point Z is Points X and are endpoints of (Tother point on the circle. Find the p

eimsori [14]

<u>Corrected Question</u>

Points X and Y are endpoints of a diameter of Circle W. Point Z is another point on the circle. Find the probability that $\angle$ XZY is a right angle.

Answer:

Probability=1

Step-by-step explanation:

<u>Theorem</u>

If an Inscribed angle intercepts a semicircle, the angle is a right angle.

Given that X and Y are endpoints of a diameter of Circle W and point Z is on the circle's circumference.

I have prepared a diagram which is attached.

Then, $\angle$ XZY is an angle which intercepts a semicircle.

By the theorem above, $\angle$ XZY is a right angle.

Therefore, the probability that $\angle$ XZY is a right angle =1

5 0

3 years ago