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3 years ago

Write a fraction with a denominator of 9. The fraction should be less than half

Mathematics

1 answer:

uysha [10]3 years ago

6 0

Answer:

The only fraction i can think of is 2/9

Step-by-step explanation:

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13....................

Mashcka [7]

13.

(a)

$y=-5x^2+21x-3$

for x = 2:

$y=-5(2)^2+21(2)-3=-20+42-3=19$

for x = 5

$y=-5(5)^2+21(5)-3=-125+105-3=-23$

(b)

The graph is:

(c)

Using the graph:

$\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}$ $\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}$ $\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}$

Using the quadratic formula:

$\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}$

6 0

1 year ago

A toy rocket is launched from a platform 24ft above the ground. The

jok3333 [9.3K]

Answer:

4 sec

Step-by-step explanation:

let y = 0 which is the height when the rocket hits the ground

-3t^2 + 6t + 24 = 0

-3(t^2 - 2t - 8) = 0

-3(t - 4)(t + 2) = 0

t = 4 or t = -2

time cannot be negative, so t = 4 sec

8 0

3 years ago

How many feet are in 13 miles, 176 yards? Enter only the number. Do not include units.

hammer [34]

Answer:

69,168

Step-by-step explanation:

1 mile = 5280 ft

13 miles · 5280 ft = 68,640 ft

1 yd = 3 ft

176 yds · 3 ft = 528 ft

68640 ft + 528 ft = 69,168 ft

5 0

3 years ago

Pls hurry and helppp NO LINKS

garri49 [273]

The answer is B !!!!!!

5 0

2 years ago

Read 2 more answers

Help me with a algebra word problem

Alexandra [31]

0.80m
0.50c
1.40B
0.50(8)+0.80(16)
1.40(5)-12.8(3)
31.04 should be your answer, sorry if I'm wrong!

6 0

3 years ago

Write a fraction with a denominator of 9. The fraction should be less than half​

Write a fraction with a denominator of 9. The fraction should be less than half