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3 years ago

May you please show work

Mathematics

2 answers:

konstantin123 [22]3 years ago

5 0

You need to attach a photo

valina [46]3 years ago

4 0

I don’t understand a what’s your question maybe try attaching a photo?

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Tiffany and Dion are having a walking race. The equation and graph show the distance each person is from the starting line,

satela [25.4K]

Answer:

Step-by-step explanation:

Tiffany's distance is defined by the equation,

d = 2.5t

Here, d = distance of Tiffany from the starting line

t = time

a). d = 2.5t

$\frac{d}{t}=2.5$

Tiffany's rate = 2.5 yards per second

b). Since, slope of a line passing through two points $(x_1,y_1)$ and $(x_2,y_2)$ is given by,

Slope = $\frac{y_2-y_1}{x_2-x_1}$

Therefore, slope of the line passing through two points (0, 10) and (10, 35)

= $\frac{35-10}{10-0}$

= 2.5 yards per second

Dion's walking rate = 2.5 yards per second

Equation that defines the distance of Dione,

d = mt + b

Here, m = rate of the walking by Dione

b = y-intercept

Hence, equation will be,

d = 2.5t + 10

c). If d = 60 yards

For Tiffany,

d = 2.5t

60 = 2.5t

t = 24 seconds

For Dion,

d = 2.5t + 10

60 = 2.5t + 10

2.5t = 50

t = 20 seconds

Therefore, Dion will take less time and finish first.

8 0

3 years ago

Decide whether the function is a polynomial function. If so, write it in standard form and state its degree, type, and leading c

Step2247 [10]

$h(x)=19x^4+0x^3+(-419)x^2+0x+18$ is a polynomial, leading coefficent 19.
(standard form: is what I wrote even near that? :)) )

6 0

3 years ago

Solve 5(8x + 4) = 300 . PLEASE HELP ME IT'LL MAKE MY DAY

pentagon [3]

X=7 5x8 is 40x and 5x4 is 20 take away 20 from both sides so it looks like this 40x=280 then divide by 40

3 0

3 years ago

Construa a matriz B=(bij)2×4 definida por <br>Bij= 1, se i=j <br> i+j, se i≠j

Alexandra [31]

Answer:

$\left[\begin{array}{cccc}1&3&4&5\&3&1&5&6\end{array}\right]$

The only ones are on the "diagonal", where i = j. Else the position is simply the sum.

4 0

2 years ago

Two brothers, Mark and Walter, each inherit $20000. Mark invests his inheritance in a savings account with an annual return of 2

Igoryamba

Answer:

$720

Step-by-step explanation:

$20000 - 100%

$x. - 2.5%

x=(20000*2.5)/100=500

20000+500=$20500 in one year (Mark)

20000 - 100

x. - 6.1

x= (20000*6.1)/100 = 1220

20000+1220= $21220 (Walter)

21220-20500= $720 more (Walter will have after 1 year)

3 0

3 years ago