3 years ago

HELLLLPPPP PLEASEEE Solving Inequalities

Mathematics

1 answer:

AnnZ [28]3 years ago

7 0

Answer:

x≥3

Step-by-step explanation:

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924 divided by 6. Help please, thank you

den301095 [7]

924 / 6 = 154

4 in to 9 is 2, put the 2 right above the 9. 4x2=8,9-8=1, bring down the 2 in 924.
12 into 4 is 3, 3x4=12, 12-12=0, bring down the 4 in 924. 4 into 4 is 1, 4x1=4, 4-4=0. That means there is no remainder!
Hope I helped! :-)

4 0

3 years ago

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A rock falls off a balcony. It’s height(in feet)is given by the formula f(x)= -16t^2+12.5t+150, where t is measured in seconds.

ELEN [110]

Answer: $3.47\ seconds$

Step-by-step explanation:

Given the following function:

$f(x)= -16t^2+12.5t+150$

You need to follow these steps in order to solve the exercise:

1. Substitute $f(x)=0$ :

$0= -16t^2+12.5t+150$

2. Now you need to apply the Quadratic formula. This is:

$x=t=\frac{-b\±\sqrt{b^2-4ac} }{2a}$

In this case, you can identify that:

$a=-16\\b=12.5\\c=150$

Then, you can substitute these values into the formula:

$t=\frac{-12.5\±\sqrt{(12.5)^2-4(-16)(150)}}{2(-16)}$

3. Evaluating, you get:

$t_1=3.47\\\\t_2=-2.69$

4. You must choose the positive value. Then:

$t=3.47\ seconds$

7 0

4 years ago

Fred and his brother are both taking driving trips. fred traveled 409 miles and used 11 gallons of gas. his brother traveled 523

Nady [450]

Fred drove 37.18 miles with per gallon & his brother drove 40.23 miles with per gallon. so Fred isn't correct.

6 0

3 years ago

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PLS HELP!! For the function f(x)=x+9. Find (f x f^-1)(5)

Karo-lina-s [1.5K]

Answer:

I hope this helps you

Step-by-step explanation:

y=x+9

x=y-9 f^-1 (x)= x-9

x=5 f^-1 (5)=5-9 = -4

f (f^-1))=f (-4)=?

x= -4

f (-4)=-4+9

f (-4)= 5

6 0

3 years ago

There are 205 total students in a school. 20% of the students are 5th

Slav-nsk [51]

Answer:

41 students

Step-by-step explanation:

20% of 205 is 41

7 0

3 years ago

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