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2 years ago

I AM GIVING OUT BRAINLIST

Mathematics

2 answers:

Ede4ka [16]2 years ago

8 0

Tenth place is the answer!! :))

Shkiper50 [21]2 years ago

8 0

Step-by-step explanation:

18.706 → 19

18.<u>7</u>06 → 18.71

18.706 = 19

18.706 = 18.71

You might be interested in

60% of what number is 21

Lerok [7]

60% of 35 is 21

Change the percentage (60) into a decimal by dividing it over 100:
$\frac{60}{100} = 0.6$

Divide 21 by the decimal:
<span> $\frac{21}{0.6} = 35$ </span>

3 0

2 years ago

Read 2 more answers

Find, correct to the nearest degree, the three angles of the triangle with the given vertices. A(1, 0, âˆ’1), B(4, âˆ’3, 0), C(1

zavuch27 [327]

Answer:

Angle at vertex A : 59.2° B: 61.7° C : 59.1°

Step-by-step explanation:

1. First find the length of the vectors

AB = B-A = (4-1, 3-0, 0-1) = (3, 3, -1)

AC = C-A = (1-1, 4-0, 3-1) = (0, 4, 2)

BC = C-B = (1-4, 4-3, 3-0) = (-3, 1, 3)

2. Find magnitude of the vectors

|AB| = √(3^2+3^2+〖(-1)〗^2 )=√19

|AC| = √(0^2+4^2+2^2 )=2√5

|BC| = √(〖(-3)〗^2+1^2+3^2 )=√19

3. Find the angles between them

cos θ = (a.b)/(|a||b|) -----> θ = arc cos ((a.b)/(|a||b|))

AB, AC : θ =arc cos (AB.AC)/(|AB||AC|) = arc cos ( (3.0+3.4+ -1.2)/(√19 x 2√5)= 10/(2√95) ) =59.136, which is approximately 59.14°

AB, BC : θ =arc cos (AB.BC)/(|AB||BC|) = arc cos( (3.-3+3.1+ -1.3)/(√19 x √19)= (-9)/19 ) = 118.27°

Because of the direction of BC is pointing relative to AB this is the angle outside the triangle, and we should find the supplementary angle.

180-118.27 = 61.73°

If we used –(BC) = CB in the formula (just negate the numerator) we would have gotten the correct angle on first try.

The 3rd angle should be what’s left after subtracting from 180°;

180-61.73-59.14 = 59.13 °

You can confirm using the formula again :

AC, BC : θ =arc cos (AC.BC)/(|AC||BC|) = arc cos( (0.-3+4.1+ 2.3)/(√19 x 2√5)= 10/(2√95) = 59.13°

Rounding everything up so they add up to 180 degrees we have Angle at vertex A : 59.2° B: 61.7° C : 59.1°

7 0

3 years ago

Will give brainlist if its a full answer

ahrayia [7]

Answer:

c 1.175 L

Step-by-step explanation:

you just add the two amounts of soap he put into the container and subtract it from the total amount of soap he had, 2 L.

8 0

2 years ago

Jim walked 1/2 of a mile in 1/4 of an hour. at this rate how long will it take him to walk one mile

Kay [80]

Answer:

1/4=25 minutes an hour

25×2=50

it will take him 50 minutes

6 0

2 years ago

The length of a rectangle is 3 more than five times its width. If the perimeter of

AleksandrR [38]

Answer:

Image result for The length of a rectangle is 3 more than five times its width. If the perimeter of the rectangle is 30 meters, find the dimensions of the rectangle.

To find the width, multiply the length that you have been given by 2, and subtract the result from the perimeter. You now have the total length for the remaining 2 sides. This number divided by 2 is the width.

6 0

2 years ago