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3 years ago

(4-21)(1 + 71) help plz

Mathematics

2 answers:

Alex Ar [27]3 years ago

8 0

the answer would be -1,224 because the parentheses is your multiplication and the it is a negative

alexira [117]3 years ago

3 0

B.18+26i because you multiply then combine

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Help, please (single variable calculus)

balandron [24]

Hi there!

$\large\boxed{ 14.875}$

Our interval is from 0 to 3, with 6 intervals. Thus:

3 ÷ 6 = 0.5, which is our width for each rectangle.

Since n = 6 and we are doing a right-riemann sum, the points we will be plugging in are:

0.5, 1, 1.5, 2, 2.5, 3

Evaluate:

(0.5 · f(0.5)) + (0.5 · f(1)) + (0.5 · f(1.5)) + (0.5 · f(2)) + (0.5 · f(2.5)) + (0.5 · f(3)) =

Simplify:

0.5( -2.75 + (-3) + (-.75) + 4 + 11.25 + 21) = 14.875

7 0

3 years ago

Help me out the number inside the triangle is really throwing me off tbh

prisoha [69]

We are given an angle of 60° and a side of 15 cm.

We are given the opposite and is looking for the hypotenuse so we will use the sine ratio to find x.

sin = opp/hyp

hyp = 15 / sin 60

hyp = 17.32...

We can also use the tangent ratio to find the adjecent and then use pythagorean to find x.

tan = opp/adj

adj = 15 / tan 60

adj = 8.660.....

8.660....² + 15² = 300²

since the square root of 300 is an irrational number, we have to turn it into a mixed radical.

The answer would be the top one.

6 0

3 years ago

6.4×10³+5.2×10³ how to solve this?

zheka24 [161]

Answer: 11,600

Step-by-step explanation: 10³ = 10 x 10 x 10 = 1,000.

1,000 x 6.4 = 6,400.

1,000 x 5.2 = 5,200.

6,400 + 5,200 = 11,600

3 0

3 years ago

Who can help me and answer the 2 questions for me :(

Art [367]

For Question 1:
angle CAB, angle ABC, angle BCA

Question 2: angle BCD

8 0

3 years ago

Find the volume of the compound shape.

jeyben [28]

<h3>Given:</h3>

Hemisphere ×2 or sphere
Cylinder

<h3>Solution:</h3><h3>Volume of the sphere:</h3>

$v = \frac{4}{3} \pi {r}^{3}$

$v = \frac{4}{3} \times \pi \times {2}^{3}$

$v = 33.51 \: {m}^{3}$

<h3>Volume of the cylinder:</h3>

$v = \pi {r}^{2} h$

$v = \pi \times {2}^{2} \times 6$

$v = 75.40 \: {m}^{3}$

<h3>Total volume:</h3>

$v = 75.40 + 33.51$

$v = 108.91 \: {m}^{3}$

Hence, the volume of the given compound shape is 108.91 cubic meters.

4 0

2 years ago

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