Step-by-step explanation: In your question, you said Isabelle's book collection has 15 books and in that collect she has 6 autobiographies. So they probability as a fraction is 6/15.

8 0

2 years ago

The five-number summary for scores on a statistics test is 11, 35, 61, 70, 79. in all, 380 students took the test. about how man

dolphi86 [110]

About 25%. This is because the 2nd 1st quartile (25th percentile) and the 3rd number is the median (50th percentile). So, about 25% of the data is between 35 and 61.

5 0

3 years ago

Read 2 more answers

Can anyone help me on this?

Ugo [173]

Answer:

$x = 1, -5$

Step-by-step explanation:

$f(x) = x^2 +4x - 5$

Factor the expression. Factoring is the process of writing out an expression by using other expressions such that when the other expression are multiplied together, the resulting expression is the initial expression.

$f(x)=x^2+4x-5$

$f(x)=(x+5)(x-1)$

Now set the expression equal to zero to find the roots (also known are zeros) of the expression. Use the zero product property to find the answers, the zero product property states that any number times zero is zero.

$0=(x+5)(x-1)\\$

$x=-5,x=1$

7 0

3 years ago