3 years ago

Help please with 4-10

Mathematics

1 answer:

Crank3 years ago

3 0

Ask them one at a time

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When solving (x + 35) = −7, what is the correct sequence of operations?

KiRa [710]

Answer:

x= -42

Step-by-step explanation:

put the liketerms together

x+35= -7

x=-35-7

note*the operation sign changes after crossing the equal sign

x= -42

4 0

4 years ago

What is the probability of rolling two dice, and having a total of 8 dots showing? Express your answer as a percent

Scrat [10]

13.89%

The value of the first die can be any number except for 1 because even if the second die rolls a 6, the total will only be 7. This means that there is a 5/6 chance of rolling an appropriate number with the first die. The second die has a 1/6 chance of rolling any given number. Any given number can be added to only one of the five numbers from the previous die to equal an 8. As a result, both numbers must be multiplied.

5/6 x 1/6 = 5/36 or 13.89%

3 0

2 years ago

If quadrilateral ABCD rotates 90° counterclockwise about the origin, what are the coordinates of A′ in quadrilateral A′B′C′D′ ?

Vesna [10]

Answer:

Option B is correct.

The coordinate of A' is (-2 , -1)

Explanation:

The coordinates of ABCD are A = (-1,2) , B(1,1) , C =(1,-1) and D(-2,-2).

Rotation means moving the shape around a fixed point clockwise or anticlockwise, and by a certain number of degrees.

Rule for 90° counterclockwise rotation about the origin: $(x,y) \rightarrow (-y,x)$