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4 years ago

Can someone please do number one and two for me?

Mathematics

1 answer:

Burka [1]4 years ago

8 0

1) corresponding pair <4 and <12

answer is a

2)
<2 = 133 (corresponding)
<2 = <5 = 133 (vertical angles)

answer a . 133

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I have been doing math all day, please help!

tester [92]

Substitute x and y with the value from table. The correct answer is A. 7=-3(-1)+4.

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3 years ago

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A spinner has three unusual sections: red, yellow, and blue.. The table shows the results of Nolan’s spins. Find the probability

Anika [276]

Answers:

Red = 1/3
Yellow = 7/15
Blue = 1/5

====================================================

Explanation:

Add up all the frequencies in the table to see that there are 120+168+72 = 360 spins total.

Of those 360 spins, 120 of them land on red. The probability of landing on red is 120/360 = (120*1)/(120*3) = 1/3
Since 168 land on yellow, this means the probability of landing on yellow is 168/360 = (24*7)/(24*15) = 7/15
Lastly, we have 72 occurrences of blue out of 360 total spins. The probability of landing on blue is 72/360 = (72*1)/(72*5) = 1/5

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3 years ago

A swimming pool is open for 7 1/2 hours during the day the pool keeps one lifeguard shift is 1 1/16 hours long how many shifts a

mariarad [96]

Answer:

7 1/17 shifts

Step-by-step explanation:

That would be 7 1/2 divided by 1 1/16

= 15/2 / 17/16

= 15/2 * 16/17

= 15 * 8 / 17

= 120/17

= 7 1/17 shifts

6 0

3 years ago

Recall that Rn denotes the right-endpoint approximation using n rectangles, Ln denotes the left-endpoint approximation using n r

pogonyaev

Answer:

$R_5=1.12$

Step-by-step explanation:

We want to calculate the right-endpoint approximation (the right Riemann sum) for the function:

$f(x)=x^2+x$

On the interval [-1, 1] using five equal rectangles.

Find the width of each rectangle:

$\displaystyle \Delta x=\frac{1-(-1)}{5}=\frac{2}{5}$

List the x-coordinates starting with -1 and ending with 1 with increments of 2/5:

-1, -3/5, -1/5, 1/5, 3/5, 1.

Since we are find the right-hand approximation, we use the five coordinates on the right.

Evaluate the function for each value. This is shown in the table below.

Each area of each rectangle is its area (the y-value) times its width, which is a constant 2/5. Hence, the approximation for the area under the curve of the function f(x) over the interval [-1, 1] using five equal rectangles is:

$\displaystyle R_5=\frac{2}{5}\left(-0.24+-0.16+0.24+0.96+2)= 1.12$

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3 years ago

Choose the slope-intercept form of y + 3 = 4(x - 5).

Scrat [10]

Answer: y=4x-23

Step-by-step explanation:

First multiply the 4 on the right side to make it y+3=4x-20. Then subtract 3 on both sides to get y=4x-23

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3 years ago

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