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3 years ago

PLEASE HELP!

1 answer:

5 0

Multiplying or dividing both sides by a negative number changes the direction of aninequality. So we cannot multiply or divide both sides by a variable unless we know that the variable is either always positive or always negative. This is not a concern when solving equalities. :p

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18. Use the spinner to find each theoretical probability

solong [7]

In the spinner there are eight numbers numbered from 1 to 8. To solve this problem, we must remember that probability is:

Probability = number of successful events / number of total events

a. P (even number). There are 4 even numbers, therefore the probability is:

P (even number) = 4 / 8

P (even number) = ½ = 0.5 = 50%

The probability of getting an even number is 50%.

b. P (a number greater than 3). There are 5 numbers greater than 3, therefore the probability is:

P (number greater than 3) = 5 / 8

P (number greater than 3) = 0.625 = 62.50%

The probability of getting a number greater than 3 is 50%.

c. P (an odd number). Similar to the even number, there are 4 odd numbers. Therefore,

The probability of getting an odd number is 50%.

4 0

3 years ago

Samantha was driving down a road and after 4 hours she had traveled 70 miles. At this speed, how many hours would it take Samant

Readme [11.4K]

Answer:

It would take Samantha 6 hours to drive 105 miles.

Step-by-step explanation:

This question can be solved by proportions.

After 4 hours she had traveled 70 miles.

This means that she travels 70/4 = 17.5 miles per hour.

How many hours would it take Samantha to drive 105 miles?

17.5 miles per hour, so for 105 miles:

105/17.5 = 6

It would take Samantha 6 hours to drive 105 miles.

3 0

3 years ago

A system of equations is graphed on the coordinate plane.

mamaluj [8]

No solutions jzksksalalaooaoaoaiaiaiakkskakakakakkaksoaoaoaokw

5 0

3 years ago

The width of a rectangle is the length minus 7 units. The area of the

AleksandrR [38]

Answer:

8 units

Step-by-step explanation:

here's your solution

=> let the length of rectangle be X

=> then width = x - 7

=> area = 8units

=>> area = length*width

=> area = x (x-7) = 8

=> x^2 - 7 = 8

=> now, x^2 - 7x - 8 = 0

=> factories the above equation by middle term split

=> x^2 - 7x - 8

=> x^2 - 8x + x - 8

=> take the common

=> x(x - 8) + 1(x - 8)

=> (x + 1) (x - 8)

neglect (x + 1) because this will in negative for X

=> x - 8 = 0

=> x = 8

=>so, x = 8

=>length = 8 units

3 0

3 years ago

Suppose it was -8 degrees Celsius at 6:00 am , by noon , the temperature had increased by 12 degrees . What was the temperature

pantera1 [17]

Answer:

Step-by-step explanation:

-8 + 12 = 4 degrees

7 0

3 years ago