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3 years ago

You got an A on 6 of your last 18 quizzes in Algebra 2. What is the experimental probability

Mathematics

1 answer:

Serjik [45]3 years ago

5 0

The experimental probability would be the number of A’s you have out of the number of quizzes you took:

Experimental probability would be 6/18 which reduces to 1/3

The answer is 1/3

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What are the solutions of the quadratic equation? 4x^2+34x+60=0

insens350 [35]

Answer:

Option 3) -6,-5/2

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$4x^{2} +34x+60=0$

$a=4\\b=34\\c=60$

substitute in the formula

$x=\frac{-34(+/-)\sqrt{34^{2}-4(4)(60)}} {2(4)}$

$x=\frac{-34(+/-)\sqrt{196}} {8}$

$x=\frac{-34(+/-)14} {8}$

$x_1=\frac{-34(+)14} {8}=-\frac{20}{8}=-\frac{5}{2}$

$x_2=\frac{-34(-)14} {8}=-6$

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3 years ago

What shape is the base of a pentagonal pyramid ?

Likurg_2 [28]

Answer:

Step-by-step explanation:

The regular pentagonal pyramid has a base that is a regular pentagon and lateral faces that are equilateral triangles.

7 0

3 years ago

In a class 28 of students, 5 have a cat and 21 have a dog. There are 4 students who do not have a cat or a dog. What is the prob

Sergeeva-Olga [200]

Answer:

15 have only a dog

5 have a dog and a cat

9 have only a cat

Step-by-step explanation:

20 + 14 = 34, there there are only 29 students, so 34 - 29 or 5 have both a dog and a cat

15 have only a dog

5 have a dog and a cat

9 have only a cat

6 0

3 years ago

There are 7 people fishing at Lake Connor: 5 have fishing licenses, and 2 do not. An inspector chooses two of the people at rand

Citrus2011 [14]

5:2
Hope this helps!!!:)

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3 years ago

Find the constant of proportionality k. Then write an equation for therelationship between xandy(Example 2)2. X8 16y 10 2030 40E

klio [65]

2) y= x times 5
The constant proportion is k=5

3) y=x times 4
The constant proportion is k=4

4)If total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.

8 0

3 years ago