3 years ago

Would someone like to help me with 5 math problems?

Mathematics

1 answer:

FromTheMoon [43]3 years ago

6 0

What kind of math problems?

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Does anybody know how to do 2 step equations? If you do can you please help me? These are the problems:

Firdavs [7]

1. x=-2
2. 11/8 or x=1.375

7 0

3 years ago

13.6z - 11 = -1.48. <br> can u please show the work for it

serious [3.7K]

Step-by-step explanation:

13.6z - 11 = -1.48.

13.6z=-1.48+11

z=9.52/13.6=0.7

7 0

3 years ago

$299 tv with 15% discount

Nuetrik [128]

The answer is 254. You want 299 with 15% off

5 0

3 years ago

Read 2 more answers

If 1625 gal of water takes 2.5 hours how long does 3185 gallons take

Katena32 [7]

Answer:

4.9 hours

Step-by-step explanation:

set it up as a proportion 1625/2.5 = 3185/x. then solve

8 0

3 years ago

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