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4 years ago

5

Ally has 5 crayons. Mike has 3 fewer crayons than Ally. Danny has 1 more crayon than Mike and Ally have in all. How many crayons

do Danny, Ally, and Mike have in all?

1 answer:

dmitriy555 [2]4 years ago

8 0

Answer:

8

Step-by-step explanation:

if you add 5 to 2 you get 7 and add 1

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A professor has noticed that, even though attendance is not a component of the final grade for the class, students that attend r

andrew11 [14]

Answer:

A) 57%

B) 16%

C) 53%

D) 57%

Step-by-step explanation:

Let R1 be students that attend class regularly

R2 be students that don't attend class regularly

A be students that receives A's in class

A) From the question A/R1 =57%

P(A/R1) = 0.57

B) From the question students that receive As that does not attend lectures regularly =16%

C) P(R2) = 1 -0.57 = 0.43

P(A) = P(A/R1) × P(R1) + P(A/R2)×P(R2)

P(A) = (0.57× 0.81) + (0.16×0

43)

P(A) = 0.46 + 0.0688= 0.53

The overall percentage that recieved A's = 53%

D) 57% recieved A's given that they attend class regularly.

4 0

3 years ago

Vertical line that passes through the point (3,-8)

Marina86 [1]

Hi there! The answer is x = 3.

All vertical lines have an undetermined slope (since the formula which represents the slope has a denominator of 0). Therefore the general formula of a vertical line is the following x = c, with c representing the x-coordinate of the point that is passed by the line. Therefore, in your situation we get the line x = 3. When we plot this line, we can see it is a vertical line with x-coordinate 3 and that all values of y are passed, also y = - 8.

6 0

3 years ago

Find the equation of the straight line graph y= mx-6

Mars2501 [29]

Answer:

y = 1/2x - 6

Step-by-step explanation:

Key:

m = slope

b = y-intercept

Slope:

( 0 - - 6 ) / ( 12 - 0 )

( 6 ) / ( 12 )

1 / 2

y-intercept:

( -6, 0 )

Hopefully this helped!

Brainliest please?

6 0

3 years ago

A bag contains tiles number 1-10. What is the probability of first selecting a PRIME number, replacing it, then selecting a numb

andrezito [222]

Answer:

0.12 = 12% probability of first selecting a PRIME number, replacing it, then selecting a number less than or equal to 3

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Probability of independent events:

Suppose we have two events, A and B, that are independent. The probability of both happening is given by:

$P(A \cap B) = P(A) \times P(B)$

In this question:

Event A: Selecting a prime number.

Event B: Selecting a number less than or equal to 3

Probability of selecting a prime number:

Between 1 and 10, we have 4 prime numbers(2,3, 5 and 7), out of 10. So

$P(A) = \frac{4}{10}$

Probability of selecting a number less than or equal to 3:

Three numbers(1,2,3) out of 10. So

$P(B) = \frac{3}{10}$

Probability of both:

$P(A \cap B) = P(A) \times P(B) = \frac{4}{10} \times \frac{3}{10} = \frac{12}{100} = 0.12$

0.12 = 12% probability of first selecting a PRIME number, replacing it, then selecting a number less than or equal to 3

5 0

3 years ago

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalen

MrRissso [65]

Answer:

Option A

Step-by-step explanation:

Step 1: Naming both equations:

$Eq. 1: 3x + 2y=-21\\Eq. 2 : x-3y=4$

Step 2: Isolating x in Eq. 2

$x=3y+4$

Step 3: Replacing x in Eq. 1

$3(3y+4)+2y=-21$

Therefore, the answer is Option A

4 0

4 years ago