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Vlad [161]
3 years ago
8

HELP ME PLS RN AAHHHHHHH

Mathematics
1 answer:
____ [38]3 years ago
6 0

Answer:

C. 9

Step-by-step explanation:

3n - 18 = 9

3n (- 18 + 18) = 9 + 18

3n = 27

3n/3 = 27/3

n = 9

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HELP DUE IN 5 MINUTES​
Daniel [21]

\huge \mathfrak \blue{Solution \:  - }

The formula for area of triangle is -

\frac{1}{2}   \times base \times height

________________________________

So, the area of first triangle =

\frac{1}{2}  \times base \:  \times height

\frac{1}{2}  \times 4  \times 3

=  \pink{6  \: units}

________________________________

Area of second triangle =

\frac{1}{2 }  \times base \times height

\frac{1}{2}  \times 4 \times 6

=  \pink {12 \:  units}

________________________________

Area of second triangle - Area of first triangle

= 12 - 6

= 6

\sf \underline\purple{The \: area \: increases \: by \: 6 \: square \: units.}

3 0
3 years ago
Read 2 more answers
Trapezia ABCD and PQRS are similar.<br> Find the area shaded in green.
avanturin [10]

The area shaded in green is 864 cm²

<h3>Similar figures</h3>

Similar figures, corresponding angles are congruent and the sides are ratio of each other. Therefore,

AB / PQ = CD / RS

30 / 10 = 24 / RS

30RS = 240

RS = 240 / 30

RS = 8 cm

let find the height of trapezium PQRS.

AB / PQ  = 36 / h

30 / 10 = 36 / h

30h = 360

h = 360 / 30

h = 12 cm

Therefore,

area of the green portion = area of ABCD - area of PQRS

<h3>Area of a trapezium</h3>
  • area = 1 / 2(a + b)h

Therefore,

area of ABCD = 1 / 2(24 + 30)36 =  1 / 2 (54)36 = 1944 / 2 = 972 cm²

area of PQRS = 1 / 2(10 + 8)12 = 1 / 2(18)12 = 216 / 2 = 108 cm²

Area of the green portion = 972 - 108 = 864 cm²

learn more on trapezium here: brainly.com/question/11961445

6 0
2 years ago
PLEASE HELP RIGHT AWAY WILL MARK BRAINLIEST!
Blababa [14]

Answer:

<u>20/48 = 42%</u>

Step-by-step explanation:

<u>Number of beige tiles</u>

  • 48 - 8 - 6 - 9 - 5
  • 40 - 6 - 9 - 5
  • 34 - 9 - 5
  • 25 - 5
  • 20 beige tiles

<u>Probability (Beige)</u>

  • No. of beige tiles / Total no. of tiles
  • <u>20/48 = 42%</u>
3 0
2 years ago
Read 2 more answers
A and b are identical batteries, which is brighter
Elden [556K]
Give better description if they are both identical
3 0
4 years ago
If the two sides of one triangle are proportional to two sides of another triangle ande their included angles are congruent then
Ray Of Light [21]

if two of the sides are proportional and the included angles are congruent  then the triangles are SIMILAR.

Answer: similar

3 0
4 years ago
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