MATHEMATICS HIGH SCHOOL

4x-13=12-x
how do i show my work

Answers

Answer 1
Answer:

Answer:

x=25

Step-by-step explanation:

4x-13=12-x

4x+x=12+13

5x=25

x=25

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Please help will mark brainy A) 9¢/qt B) $91.43¢/qt C) 64¢/qt D) 0.64¢/qt

0.77,0.077
7.7,0.7
to GREATEST
least​

Answers

7.7, 0.77, 0.7, 0.077

6 1/2 +7/2=
maths work out plz

Answers

Answer:

10

6 1/2 + 7/2= 6 1/2 + 3 1/2= 6+ 3 + 1/2 + 1/2 =10

Answer:

34

Step-by-step explanation:

61/2 +7/2=68/2=34

mark me brainliest plz

Simplify the expression 18 + 12xa 2 (9 + 5x )
b 3(6 +3x)
c 6 ( 3 + x)
d (3 + 2x)
​

Answers

Answer:

c:) 6(3 + 2x)

Step-by-step explanation:

The given expression is 18 + 12x. To simplify this expression, we can first look for any common factors that can be factored out. In this case, we can factor out 6, which gives:

18 + 12x = 6(3 + 2x)

So, the simplified expression 18 + 12x is 6(3 + 2x).

What is the circumference AND area or circle C?

Answers

Answer:

56.55in

254.47in^(2)

Step-by-step explanation:

C=\pi d

C=18\pi

C=56.54866776

A=\pi r^(2)

A=\pi(9)^(2)

A=81\pi

A=254.4690049

Find -x + 10 less than 0.

0
-x + 10
x - 10

Answers

-x + 10 \ \textless \ 0

Transposing the inequation gives:
-x \ \textless \ -10

Since we want to get rid of the negatives on both sides, we must flip the sign:
x \ \textgreater \ 10

If you transpose the equation to make RHS be 0:
x - 10 \ \textgreater \ 0
That seems to satisfy  x - 10 (could be wrong though...)

But I'm not exactly clear on what you want as the options above don't seem to give that much context :I

Answer:

x - 10

Step-by-step explanation:

Read the real-world situation and substitute in values for the projectile motion formula. Then solve the resulting quadratic equation by factoring to answer the question. An airplane pilot jumps out of an airplane and has an initial velocity of 60 feet per second downwards. How long does it take to fall from 1000 feet to 900 feet before the parachute opens? The pilot falls for seconds before the parachute opens.

Answers

Solving quadratic equation 16 t² -60t -100=0 formed by Projectile Motion Formula and given conditions it is found that it takes t = 5 seconds to fall from 1000 feet to 900 feet before the parachute opens.

What is a quadratic equation?

Quadratic equation is an equation which contains one unknown variable and the highest power of this unknown variable is 2. Let x be the unknown variable then the standard quadratic equation in x is given by

ax²+bx+c =0, where a, b, c are constants and a≠0

We can solve this equation by factorizing ax²+bx+c and  putting those factors equal to zero to solve for x.

Projectile Motion Formula h = -16 t² + v t + s,

where t = time in seconds

h = height of the projectile

v = initial velocity

s= starting height of fall

Given s = 1000 feet, v= 60 feet per second, h = 900 ft

And t we have to find.

Projectile motion equation becomes:

900 = -16 t² + 60 t + 1000

⇒16 t² -60t + 900-1000=0

⇒16 t² -60t -100=0, which is a quadratic equation in variable t

Factorizing this quadratic equation

⇒ 16t² - 80t + 20t -100 =0

⇒16t(t -5) + 20( t - 5 ) =0

⇒ (16t +20) ( t-5)=0

Putting these factors equal to zero

16t +20 =0 ⇒ t = -20/16, which is neglected as time cannot be negative.

t-5 = 0⇒ t =5

Therefore it takes 5 seconds to fall from 1000 feet to 900 feet before the parachute opens.

Also, Learn more about the quadratic equations from the link below:

brainly.com/question/17177510

#SPJ1

Answer:It will take 5 sec for a parachute to open.I did it on a piece of paper for u to show u more information

Step-by-step explanation:
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