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3 years ago

11

MULTIPLE CHOICE SHOW YOUR WORK. A bag contains 3 red, 5 yellow, and 7 purple marbles. What is the probability of drawing a purpl

e marble on a red marble? А 10/15 = 2/3 B 5/10 = 1/2 с D 7/8 3/8 2 of 20 > > त्र 1 2

1 answer:

astraxan [27]3 years ago

4 0

I think that it is A. 10/15

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Can someone tell me how to approach this, I could care less about the answer I just want to know how to solve this without Desmo

kipiarov [429]

Answer:

the vertex is at (4, -14)

Step-by-step explanation:

Review "quadratic equations." These have three terms, and the highest power of x is x^2. We need to identify the coefficients of the x^2, x and x^0 terms to get info needed to identify the axis of symmetry.

Given f(x) = x^2 - 8x + 2, we see that these coefficients are 1, -8 and 2.

b

The formula for the axis of symmetry is x = - ------

2a

which here is x = -(-8)/[2*1], or x = 8/2 or x = 4: the axis of symmetry.

To find the y-coordinate of the vertex, evaluate the function at x = 4:

f(4) = 4^2 - 8(4) + 2 = 16 - 32 + 2, or f(4) = -14.

Thus, the vertex is at (4, -14). The graph is that of a parabola that opens up, and the parabola is symmetric about the vertical line x = 4.

4 0

3 years ago

Three times the difference between 4 times h and five is 45

Anestetic [448]

3(4h-5) =45

12h-15=45

+15 +15

12h = 60

÷12 ÷12

h = 5

5 0

3 years ago

Any know how do these problems?

Ksju [112]

13. (6-9)^-3= -1/27 or -0.04(rounded to nearest hundredth.
15. 4^-1+(5-7)^-2= 1/2 or .5

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3 years ago

Which statement about a right triangle is NOT true?

s344n2d4d5 [400]

Answer:

C

Step-by-step explanation:

for example right triangle with length 3, 4, and 5

3 + 4 not equal to 5

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3 years ago

Jack plotted the graph below to show the relationship between the temperature of his city and the number of ice cream cones he s

Stels [109]

Answer:

Part A: When the temperature increases, the number of ice cream cones sold increases. It shows close to a linear relationship.

Part B: y = 2x+5

Step-by-step explanation:

Part A: When the temperature increases, the number of ice cream cones sold increases. It shows close to a linear relationship.

Part B: To write the line of best fit, use the points that run a line through the data.

You can connect (0,5) and (25,55) and have a line through the middle of the data.

This line intercepts the y-axis at (0,5) so b=5.

It's slope is

$\frac{y_2-y_1}{x_2-x_1}=\frac{55-5}{25-0} =\frac{50}{25} = 2$

The slope is 2 and b=5 so y = 2x + 5.

6 0

4 years ago