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steposvetlana [31]

2 years ago

15

Solve the inequality and graph the solution on the line provided. 3x + 12 > 3

1 answer:

castortr0y [4]2 years ago

5 0

Answer:

x>-3

Step-by-step explanation:

3x+12>3

3x>-9

x>-3

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Need answer quickly. Thanks

ratelena [41]

Answer:

sopa de macaco

Step-by-step explanation:

macacoooooooo

8 0

2 years ago

In a triangle ABC, measure of angle B is 90 degrees. AB is 3x-2 units and BC is x+3. If the area of the triangle is 17 sq cm, fo

Scorpion4ik [409]

Answer:

$x=\frac{8}{3}\ cm$

Step-by-step explanation:

we know that

The area of the right triangle ABC is equal to

$A=\frac{1}{2}(AB)(BC)$

we have

$A=17\ cm^2$

$AB=(3x-2)\ cm$

$BC=(x+3)\ cm$

substitute the values

$17=\frac{1}{2}(3x-2)(x+3)$

$34=(3x-2)(x+3)$

$34=3x^2+9x-2x-6$

$3x^2+7x-6-34=0$

$3x^2+7x-40=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$3x^2+7x-40=0$

so

$a=3\\b=7\\c=-40$

substitute in the formula

$x=\frac{-7(+/-)\sqrt{7^{2}-4(3)(-40)}} {2(3)}$

$x=\frac{-7(+/-)\sqrt{529}} {6}$

$x=\frac{-7(+/-)23} {6}$

$x=\frac{-7(+)23} {6}=\frac{16}{6}=\frac{8}{3}$

$x=\frac{-7(-)23} {6}=-5$

therefore

The solution is

$x=\frac{8}{3}\ cm$

6 0

2 years ago

Sarah is playing musical chairs. There are twenty people playing and one of them won't be able to find a seat. Find the probabil

emmainna [20.7K]

Answer:

Decimal = 0.05

Percentage = 5%

Explanation:

Total count : 20

Sarah count : 1

probability = favorable outcomes/total outcomes

= 1/20

= 0.05

6 0

2 years ago

I already did the work but i need someone to check it for me

Basile [38]

Yes it correct.............

6 0

2 years ago

The wheels on Kiran's bike are 64 inches in circumference. How many times do the wheels rotate if Kiran rides 300 yards?

Dominik [7]

Answer:

168.75, about 169 times

Step-by-step explanation:

1 yd= 36 in

300 yd= 10800 in

10800 in/ 64 in=168.75

5 0

2 years ago

Read 2 more answers