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3 years ago

(ASAP 50 POINTS) If the aspect ratio of a chalkboard is 4:3 and the width is 12 in, what is the length of the chalkboard?

Mathematics

2 answers:

kvv77 [185]3 years ago

8 0

The answer is 6.67 i think

Mice21 [21]3 years ago

7 0

Answer: The length of the chalkboard is 9 inches.

Step-by-step explanation:

12/4= 4

3*3= 9

12:9 is equal to 4:3

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Besides -10.75+-10.75 what plus what = -21.5?

Butoxors [25]

Answer:

-32.25 + 10.75 = -21.5

Step-by-step explanation:

-10.75 + -10.75 = -21.5

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Please help! It would be very much appreciated :)

Trava [24]

Answer:

Cos 45=6/x

x=6/cos 45=6√2

x=6√2

tan 45=y/6

y=tan45 ×6

y=6

sin 60=y/10

y=sin60×10

y=5√3

again

Cos 60=x/10

x=½×10

x=5

Sin 45=x/5

x=1/√2×5 or

x=5√2/2

again

y=5√2/2 or 5/√2[base angle of right angled isosceles triangle]

Sin 30=8/x

½×x=8

x=8*2

x=16

again

cos 30= y/x

√3/2×16=y

y=8√3

sin 60=7/x

x=7/[√3/2]

x=14/√3 or 14√3/3

again

cos 60=y/x

½×14√3/3=y

7√3/2=y

y=7√3/2

Note:

Sin angle =perpendicular/hypotenuse

Cos angle =base/hypotenuse

Tan angle =perpendicular /base

7 0

3 years ago

How do you find cube of the measure of one edge of a bird cage

Svetlanka [38]

Measure × measure × measure

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4 years ago

Pls answer the questions (all)

bearhunter [10]

Answer:

1;no

2; i don^t know

3;c

4;12

5:20

Step-by-step explanation:

reasons

1:sum of all side of triangle is 180 degree(here is 220)

3: try in copy and u will able to solve

4:first of all make 9 cm as shown in figure and draw 15 . finally measure the remaining side.

5: 3y+5y+y=180

9y=180

hence,y=20

4 0

3 years ago