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Lady bird [3.3K]
3 years ago
8

Which expressions are equivalent to 6x - 18 ?

Mathematics
2 answers:
charle [14.2K]3 years ago
6 0

Answer:

C, D, and E are your answers

3 x 2x = 6x, 3 x 6 = 18

6x - 18

x + 5x = 6x

6x - 18

2 x 3x = 6x

2 x 9 = 18

6x - 18

yKpoI14uk [10]3 years ago
5 0

c.) 3(2x-6)

Reason:-

3(2x-6) = 6x-18

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Is x +1 a factor? Yes or why not?
Irina-Kira [14]

Answer:

It can be a factor if you have f(-1) = 0

That's binomial theorem as I remember.

7 0
2 years ago
Find the area of a circle with a circumference of 6.28 unitesz
Anni [7]

Answer:

3.14 square units

Step-by-step explanation:

Circumference of a circle = 2πr

2πr = 6.28

r = 6.28/2π

r = 3.142/π

Area of a circle = πr^2

slot in the value of r

Area of the circle = π( 3.142/π)^2

               "              = π(9.87/ π^2)

                "             = 9.87/π

π = 3.14

Area of a circle = 9.867/ (3.14)

              "            = 3.14 square units

                     

8 0
3 years ago
Find the value of x of this question ​
mel-nik [20]
<h3><u>Let's</u><u> </u><u>understand</u><u> </u><u>the concept</u><u>:</u><u>-</u></h3>
  • Here angle B is 90°
  • So \triangle ABC and \triangle ABD Are right angled triangle
  • So we use Pythagoras thereon for solution

<h3><u>Required Answer</u><u>:</u><u>-</u></h3>
  • First in triangle ABC

perpendicular=p=8cm

Hypontenuse =h =10cm

  • We need to find base=b

According to Pythagoras thereon

{\boxed{\sf b^2=h^2-p^2}}

  • Substitutethe values

\longrightarrow\sf b^2=10^2-p^2

\longrightarrow\sf b={\sqrt {10^2-8^2}}

\longrightarrow\sf b={\sqrt{100-64}}

\longrightarrow\bf b={\sqrt {36}}

\longrightarrow\sf b=6

\therefore\overline{BC}=6cm

BD=BC+CD

\longrightarrowBD=9+6

\longrightarrowBD=15cm

  • Now in \triangle ABD

Perpendicular=p=8cm

Base =b=15cm

  • We need to find Hypontenuse =AD(x)

According to Pythagoras thereon

{\boxed {\sf h^2=p^2+b^2}}

  • Substitute the values

\longrightarrow\sf h^2=8^2+15^2

\longrightarrow\sf h={\sqrt {8^2+15^2}}

\longrightarrow\sf h={\sqrt {64+225}}

\longrightarrow\sf h={\sqrt {289}}

\longrightarrow\sf h=17cm

\therefore{\underline{\boxed{\bf x=17cm}}}

8 0
3 years ago
Sam is driving home from college. He is 220 miles away from home. If he can make it home in 4 hours, at what speed or velocity i
yan [13]
Answer: 55 miles per hour

Explanation: that hint is really useful
So if distance = velocity x time
That means 220 = v x 4 hours
To find v, divided 220 by 4
220 divided by 4 = 55
But I have a question:
Is he driving at a constant speed?
and is this 6th grade math? I’m in that grade but you can trust my answer
If im wrong, someone pls correct me
If im right, mark me brainliest pls, im broke, i have no points-
Goodluck!
3 0
3 years ago
Y = 3x +1; domain = {-1, 0, 1}<br> HELP PLEASE
ser-zykov [4K]

We have to put values of domain to find range

\\ \ast\sf\longmapsto y=3x+1

\\ \ast\sf\longmapsto D_R=[-1,0,1]

\\ \ast\sf\longmapsto y=3(-1)+1=-3+1=-2

\\ \ast\sf\longmapsto y=3(0)+1=0+1=1

\\ \ast\sf\longmapsto y=3(4)+1=12+1=13

Now

\\ \ast\sf\longmapsto R_R=[-2,1,13]

6 0
3 years ago
Read 2 more answers
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