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3 years ago

Is this table a function? why or why not?

Mathematics

2 answers:

Dafna1 [17]3 years ago

8 0

No because 2 has two different inputs

JulijaS [17]3 years ago

4 0

No. There has to be only one output for each input. Because the number two is an input twice and has two different outputs, this can not be a function

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When Plotting the point,(-4,3), which describes the movement along The x-axis and y-axis in the correct order

SpyIntel [72]

B because if x is negative you always move to the left when plotting a point and if the y is positive you’ll always move up the y-axis to plot the point

7 0

3 years ago

Melissa has started training for a race. The first time she trains, she bikes 5 miles. Each subsequent time she trains, she bike

joja [24]

9514 1404 393

Answer:

A. d = ∑[k=1,n] (4.5+0.5k)

B. 9

Step-by-step explanation:

A) The series has first term 5 and common difference 0.5. The general term is given by ...

an = a1 +d(n -1)

an = 5 + 0.5(n -1) . . . . substitute numbers for this series

an = 4.5 +0.5n . . . . . . simplify

The sum is the sum of these terms:

$\displaystyle \boxed{d_n=\sum_{k=1}^n(4.5+0.5k)}$

B) The sum of terms of an arithmetic series is the average of the first and last, multiplied by the number of terms. We want to solve for n to make the sum greater than 60.

$\displaystyle d_n=\frac{n}{2}(5 +4.5 +0.5n)\\\\\dfrac{n}{2}(9.5+0.5n)>60\\\\n(19+n)>240\qquad\text{multiply by 4}\\\\n^2+19n+9.5^2>240+9.5^2\qquad\text{complete the square}\\\\n+9.5>\sqrt{330.25}\qquad\text{square root}\\\\n>18.17-9.5=8.67\qquad\text{positive root, subtract 9.5}$

Melissa's total distance will first exceed 60 miles the 9th time she trains.

6 0

3 years ago

Read 2 more answers

these cards are put int a bag. One card is chosen at random. (1,2,3,4,5,6,7,8,9,10) a.) what is the probability of choosing the

Rama09 [41]

Answer:

There are 10 cards in total.

The probability of choosing card with the number 4 is 1/10.

The probability of choosing card with the number 1 is 2/10 = 1/5 (since there are 2 cards with the digit 1 - 1, 10)

5 0

4 years ago

Read 2 more answers

The length of a rectangle is 3x+5 and the width of a rectangle is 4. If the area of the rectangle is 44 feet, solve for x.

Tema [17]

Answer:

x = 2

Step-by-step explanation:

A = lw

44 = 4(3x+5)

44 = 12x + 20

24 = 12x

x = 2

4 0

3 years ago

Help me asap i will give brainliest answer

Shtirlitz [24]

Answer:

The first spin is 0.50

The second spin is 0.125

The third spin is 0.375

Hope this helps!

Step-by-step explanation:

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3 years ago