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3 years ago

Very urgent please help and thank you

Mathematics

1 answer:

Fittoniya [83]3 years ago

8 0

Answer:

its A.

Step-by-step explanation:

I actually dont know I didnt solve it. i guessed and got it right lol

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A man has nine shirts and two ties. assuming that they all match, how many different shirt-and-tie combinations can he wear?

shepuryov [24]

I would say 18. 9 times 2

4 0

3 years ago

And an equation of the line. Write the equation using function notation.

NeTakaya

Answer:

F(x) = - 2/5x - 11

Step-by-step explanation:

F(x) = - 2/5x + c

-9 = - 2/5(-5) + c

-9 = 2 + c

- 11= c

F(x) = - 2/5x - 11

7 0

3 years ago

If an arrow is shot upward on Mars with a speed of 56 m/s, its height in meters t seconds later is given by y = 56t − 1.86t2.

Zina [86]

Answer: (a) (i)50.42 m/s (ii) 51.35 m/s (iii) 52.094 m/s (iv) 52.2614 m/s (v) 52.27814 m/s

(b) 54.14 m/s

Step-by-step explanation:

The average speed over the given time interval [a,b]: = $\frac{y(b)-y(a)}{b-a}$

Given: If an arrow is shot upward on Mars with a speed of 56 m/s, its height in meters t seconds later is given by $y = 56t − 1.86t^2.$

(a)

(i) average speed = $\frac{y(2)-y(1)}{2-1}$

$=\frac{56(2)-1.86(2)^2-(56(1)-1.86(1)^2)}{1}$

$=50.42$ m/s

(ii) average speed = $\frac{y(1.5)-y(1)}{1.5-1}$

$=\frac{56(1.5)-1.86(1.5)^2-(56(1)-1.86(1)^2)}{0.5}$

$=51.35$ m/s

(iii) average speed = $\frac{y(1.1)-y(1)}{1.1-1}$

$=\frac{56(1.1)-1.86(1.1)^2-(56(1)-1.86(1)^2)}{0.1}$

$=52.094$ m/s

(iv) average speed = $\frac{y(1.01)-y(1)}{1.01-01}$

$=\frac{56(1.01)-1.86(1.01)^2-(56(1)-1.86(1)^2)}{0.01}$

$=52.2614
$ m/s

(v) average speed = $\frac{y(1.001)-y(1)}{1.001-01}$

$=\frac{56(1.001)-1.86(1.001)^2-(56(1)-1.86(1)^2)}{0.001}$

$=52.27814
$ m/s

(b) $y(1)=56(1)-1.86(1)^2$

$=56-1.86$

$= 54.14$ m/s

3 0

3 years ago

How do you get the answer to this question?

ValentinkaMS [17]

Answer:

2 small notebooks and 4 large notebooks

Step-by-step explanation:

$8 × 2 = $16

$10 × 4 = $40

2 + 4 = 6

$40 + $16 = $56

Hope that helps.

5 0

4 years ago

Read 2 more answers

X+9=−3 <br><br> PLEASE HELP FAST IM TIMED!!

love history [14]

x + 9 = -3

= x + 9 - 9 = -3 - 9

= x = -12

x is -12

7 0

4 years ago

Read 2 more answers