3 years ago

What is the difference of the fractions? Use the number line to help find the answer. 1/2 - 1 1/5

Mathematics

1 answer:

hammer [34]3 years ago

4 0

5/10 - 22/10 , 22/10 -5/10 = 17/10 is the difference I think

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The height h in feet of a ball thrown vertically upward from the top of a 288-foot tall building is given by h=288+48t-16t^2 whe

mr Goodwill [35]

6 sec can take penny to strike the ground.

Solution:

Given data:

$H_0=288$ feet

$V_0=48$ feet

$h(t)=288+48t-16t^2$

Re-arrange the terms from greatest degree to smallest degree.

$h(t)=-16t^2+48t+288$

We can solve it by applying quadratic formula,

$$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Here a = –16, b = 48, c = 288

$$t=\frac{-48\pm \sqrt{48^2-4(-16)(288)}}{2(-16)}$

$$t=\frac{-48\pm \sqrt{2304+18432}}{-32}$

$$t=\frac{-48\pm \sqrt{20736}}{-32}$

$$t=\frac{-48\pm144}{-32}$

Now, write find two t's using plus and minus operation.

$$t=\frac{-48+144}{-32},\ \ t=\frac{-48-144}{-32}$

$$t=\frac{96}{-32},\ \ t=\frac{-192}{-32}$

t = –3 (or) t = 6

We cannot write time is negative. so neglect t = –3.

Therefore t = 6.

Hence 6 sec can take penny to strike the ground.

8 0

3 years ago

A = 4 units B= 3 units C= 3.5. D= 5 units

aliya0001 [1]

D would be the correct answer.

Explanation

a^2+b^2=c^2

4^2+3^2=c^2

16+9

25 units

4 0

3 years ago

Bart ran 5000 from the cop and an average speed of 6 meters/ seconds before he got caught. how long did he run?

Masja [62]

Answer:

13.8 minutes

Step-by-step explanation:

5000/6= 833/60

3 0

3 years ago

Malek had a summer job that pays $7.00 an hour and he worked between 15 and 35 hours every week. His weekly salary can be modele

oee [108]

Answer:

57 hours

Step-by-step explanation:

because it is big hours

realley yeah please follow me

I am a school teacher

5 0

3 years ago

Find the missing number (1+_ ÷7+4)÷8=4/7

GaryK [48]

The answer to (1+_÷7+4)÷8= 4/7 is -3 I believe

3 0

3 years ago

What is the difference of the fractions? Use the number line to help find the answer. 1/2 - 1 1/5​

What is the difference of the fractions? Use the number line to help find the answer. 1/2 - 1 1/5