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Anna35 [415]
2 years ago
12

A prize machine randomly dispenses small toys. There are 1515 prizes left:

Mathematics
1 answer:
Julli [10]2 years ago
6 0
3/15*3/15 = .04 move the decimal 2 times so its 40%
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Select the correct answer.
EleoNora [17]

Answer:

Option (B)

Step-by-step explanation:

There are two lines on the graph representing the system of equations.

First line passes through two points (-3, 1) and (-2, 3).

Slope of the line = \frac{y_2-y_1}{x_2-x_1}

                           = \frac{3-1}{-2+3}

                       m = 2

Equation of the line passing through (x', y') and slope = m is,

y - y' = m(x - x')

Equation of the line passing through (-3, 1) and slope = 2 will be,

y - 1 = 2(x + 3)

y = 2x + 7 ----------(1)

Second line passes through (0, 1) and (-1, 4) and y-intercept 'b' of the line is 1.

Let the equation of this line is,

y = mx + b

Slope 'm' = \frac{y_2-y_1}{x_2-x_1}

               = \frac{4-1}{-1-0}

               = -3

Here 'b' = 1

Therefore, equation of the line will be,

y = -3x + 1 ---------(2)

From equation (1) and (2),

2x + 7 = -3x + 1

5x = -6

x = -\frac{6}{5}

x = -1\frac{1}{5}

From equation (1),

y = 2x + 7

y = -\frac{12}{5}+7

  = \frac{-12+35}{5}

  = \frac{23}{5}

  = 4\frac{3}{5}

Therefore, exact solution of the system of equations is (-1\frac{1}{5},4\frac{3}{5}).

Option (B) will be the answer.

5 0
3 years ago
Edwina made a circular hula hoop out of a piece of tubing 152 inches long by bending it into a circle and taping the ends togeth
juin [17]
This is equal tio the diameter of the circle formed:-

152 ins = circumference  and this = pi * diameter

so the Answer is 152 / pi  =  48.4 ins to nearest tenth

48 inches to nearest inch.
7 0
3 years ago
Help<br> pls<br> its<br> a<br> test<br> t<br> t<br> t<br> t<br> t<br> t
andrew-mc [135]

Answer: C

Step-by-step explanation: Hope this help :D

8 0
3 years ago
Read 2 more answers
A student researcher conducts an experiment that investigates the effects of a new mathematics website on student achievement. S
pickupchik [31]

Answer:

A, B and C

Step-by-step explanation:

A. Adding another researcher to provide ratings will make the study less biased.

B. A quiz or exam will show which students have a better understanding of the math material. Better quiz or exam results show that the site is more effective for a student with or without the supplemental instruction.

C. Having a greater sample size is better because a greater scope of students is covered. Different students have different abilities and learning preferences.

8 0
2 years ago
Read 2 more answers
I need help, thank you
natali 33 [55]
Plot it on point (-2,-1)
7 0
3 years ago
Read 2 more answers
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