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expeople1 [14]
3 years ago
8

A cookie jar contains 6 chocolate chip cookies, 4 oatmeal cookies, 8 peanut butter cookies, and 2 sugar cookies. If a cookie is

pulled from the jar what is the probability that it is oatmeal or peanut butter? A) 1 5 B) 2 5 C) 3 5 D) 4 5
Mathematics
1 answer:
Tpy6a [65]3 years ago
7 0
You have 20 cookies total in the jar.  The probability of choosing an oatmeal is 4/20, and the probability of choosing a peanut butter cookie is 8/20.  In order to find the probability of pulling a peanut butter cookie OR an oatmeal cookie, we have to add the probabilities together.  8/20 + 4/20 = 12/20 or 6/10 or 3/5.  The answer is C.
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Line g has a slope of -5/6. Line h is perpendicular to g. What is slope of line h ?
gavmur [86]

Answer:

6/5

Step-by-step explanation:

When two lines are perpendicular to each other, their slope are the negative reciprocal to each other. (so you flip them and change the sign)

4 0
3 years ago
What is the value discriminate b squared -4 AC for the quadratic equation zero equals negative 2X squared minus 3X +8 and what d
SVEN [57.7K]

Answer:

Step-by-step explanation:

-2x²-3x+8=0

disc.=b²-4ac=(-3)²-4(-2)(8)=9+64=73>0

it has two real irrational solutions.

4 0
3 years ago
Lisa's penny bank is 1/10 full. After she adds 440 pennies, it is 3/5 full. How many pennies can Lisa's bank hold?
Lisa [10]

First lets change the fractions so they have common denominators:

3/5 = 6/10

The bank was 1/10, after adding the pennies it was 6/10

6/10 - 1/10 = 5/10 = 1/2

This means 400 pennies filled 1/2 the piggy bank.

There are 2 halves (1/2) to a whole ( full piggy bank).

The piggy bank can hold 400 x 2 = 800 pennies.

5 0
3 years ago
Ubehebe crater in Death Vally has a diameter of a little more than 1/2 mile. If latisha walks around its rim at a rate of 2 mile
Sergeu [11.5K]
l=2 \pi r
r=0.25 miles
l=2×\pi×0.25
 =0.5 × 3.14
 =1.57

120(minutes)÷2(miles)=60(minutes per mile)
60×1.57=94.2 minutes 
8 0
3 years ago
Under his cell phone plan, Bentley pays a flat cost of $64.50 per month and $4 per gigabyte. He wants to keep his bill at $78.90
Ira Lisetskai [31]

Answer:

3.6 gB

Step-by-step explanation:

You can think of this question in terms of the y = mx+b equation.

$78.90 is y because it is the total amount per month, $4 is m because it is the cost per gB, and $64.50 is b because it is the flat rate.

78.9 = 4x + 64.5

4x = 14.4

x = 3.6 gB of data (or 3 if it wants a whole number)

7 0
3 years ago
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