suppose it has been determined that the probability is 0.6 that a rat injected with cancerous cells will live. if 35 rats are injected, how many would be expected to die

Answers

Answer 1

Answer:

Calculating this, we find that approximately 14 rats would be expected to die.

Step-by-step explanation:

determine the number of rats expected to die, we need to multiply the probability of dying (1 - 0.6 = 0.4) by the total number of rats injected. Probability of dying = 1 - Probability of living = 1 - 0.6 = 0.4 Number of rats expected to die = Probability of dying * Total number of rats injected = 0.4 * 35

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Write as a fraction 7^-2
Find the exponential function that satisfies the given conditions: Initial value = 31, increasing at a rate of 10% per year f(t) = 10 ⋅ 1.1t f(t) = 31 ⋅ 1.1t f(t) = 31 ⋅ 0.1t f(t) = 31 ⋅ 10t

Point D(−1, 5) is reflected across the x-axis.Which statements about D' are true?

Select each correct answer.

The y-coordinate is−5.

The x-coordinate is −1.

The y-coordinate is 5.

The x-coordinate is 1.

Answers

Answer-

The coordinates of D' are (-1, -5)

Solution-

The coordinates of D are (-1, 5).

While reflecting any points across the x-axis with coordinates as (x, y) becomes, (x, -y). i.e sign of y-coordinate changes.

The rule is (x, y) → (x, -y)

Applying so, after reflecting point D, its reflection D' will have coordinates as (-1, -5)

Therefore, the y-coordinate is -5.

The answers are A and B, -5 and -1. Hope this helps!

5 times what number will be negative 7?

Answers

Answer:

-1.4

Step-by-step explanation:

5*X = - 7

5x= - 7

X= - 7/5

X= - 1.4

5x = -7
Divide both sides by 5.
X = -7/5 or -1.4

Solve for x: 1 < x + 3 < 4

Answers

undo what's done to x:

1 - 3 < x + 3 - 3 < 4 - 3, so

-2 < x < 1

this SHOULD be your answer-- if it's not for some reason, let me know.

Let's solve your inequality

1<x+3<4 = −2<x<1

What is a 2 digit number, less than 50 that can be divided by 4 exactly and when 4 is added to it it can be divided by 5 exactly

Answers

ok

divisible by 4 exactly measn that it is even
ends with 0,2,4,6,8

when you add 4 it divides by 5, if it is divisble by 5 it ends with 0 or 5
the possible numbers under 50 that are divisble by 5 are
5,10,15,20,25,30,35,40,45

if you add 4 to the mystery number, you get divisible by 5
minus 4 from all of that list and see which s divisible by 4
1,6,11,16,21,26,31,36,41

the number could be 16 or 36

The interest that Julia earns on her investment is given by the equation I = 48t where t is the time in years that her money is invested. She makes a table to determine how much money she would earn for different values of t. If one of the values for t she selects is 5, what would be her corresponding entry for I?A. 53
B. 240
C. 485
D. 9.6

Answers

if the value is 5 and the equation is
I = 48t
then
I = 48*5 = 240
option B

Compare the two fractions using <, >, or =.
1/2____7/15

Answers

1/2 < 7/15
because
15/ 30 < 14/ 30
(these are equivalent fractions- they have the same denominator so that it is easier to compare)

Answer:

1/2 < 7/15

Step-by-step explanation:

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