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MArishka [77]
3 years ago
9

Solve for x. √x+20=9 Please show and explain all steps so I can better understand :)thx

Mathematics
2 answers:
IRINA_888 [86]3 years ago
5 0

Answer:

he's right i just did on E.B its 61=x

lions [1.4K]3 years ago
3 0

Answer:

x=61

Step-by-step explanation:

There's a website called "symbolab.com" that I use to figure out problems like this easily. :) It has a bunch of math-related calculators and graphing stuff.

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Luis, using appropriate safety precautions, fires a .22 caliber gun directly into the sky above him. The bullet travels at a spe
Tanya [424]

The equation represents height as a function of time.

The bullet was in the air for 75 seconds.

The equation is given as:

h(t) = -16t^2  + 1200t

The time spent in the air is the time it takes the bullet to land on the ground.

When the bullet is on the ground, the height is:

h(t) = 0

So, we have:

h(t) = -16t^2  + 1200t

-16t^2 + 1200t = 0

Factor out t

t(-16t + 1200) = 0

Split

t = 0 or -16t + 1200 = 0

t = 0 represents when the shot is fired.

So, we solve for t in -16t + 1200 = 0

Collect like terms

16t = 1200

Divide both sides by 16

t = 75

Hence, the bullet was in the air for 75 seconds

Read more about height and time at:

brainly.com/question/2261757

5 0
2 years ago
Please help me out and explain with steps thank you.
Lana71 [14]

Answer:

at matilda's new job, she will make a rounded salary of $69,000 per year.

Step-by-step explanation:

when solving a problem like this, you have to take her current salary ($64,000 per year) and multiply it to the salary increase percentage by first turning the percentage into a decimal. to turn the percentage into a decimal, you imagine a tiny dot to the right of the 8 like this:

8.

and then you have to move that little dot to the left two times recreating it into .08. you multiply .08 (the salary increase percentage) by her current salary ($64,000) and then also add that number to matilda's current salary to come up with the answer you can round. I'll give you an example of my proscess just so I can give a clear visual of my explanation.

step one:

$64,000

x .08

-------------

5,120

step 2:

$64,000

+$5,120

-------------

$69,120

step 3:

$69,120 is rounded up to the nearest thousands is approximately $69,000

answer: $69,000

6 0
3 years ago
PLEASE ANSWER THIS FAST!!!!!Joseph is given the formula for the perimeter of a rectangle. The first step in solving for the vari
ololo11 [35]

Answer:

the first step is to subtract the 2W from each sides of the equal sides

Step-by-step explanation:

P=2L+2W

the first step is to subtract the 2W from each sides of the equal sides

P-2W=2L+2W-2W

P-2W=2L

8 0
3 years ago
What is the multiplicative inverse of (-3) + (-6) quick place ​
Yuri [45]

Answer:

-1/6

Step-by-step explanation:

I looked it up

8 0
2 years ago
Help with number three!
natka813 [3]
1 hour and 35 minutes without the break. 60 minutes in an hour, subtract 15 from 50 = 35 minutes. It starts at 3 and ends at 4, which is 1 hour apart. Because there us a break you subtract 30 from the minutes , 35-30=5. So you have 1 hour and 5 minutes.
7 0
3 years ago
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