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3 years ago

Find the area of the triangle SHOW WORK

Mathematics

1 answer:

Veseljchak [2.6K]3 years ago

7 0

Answer:

1845 cm

Step-by-step explanation:

The formula of triangle is 1/2(b)(h)

B is the height and A is the base.

90 times 41 divided by 2

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What is the area of a rectangle with a length of 3 cm and width of 4.5 cm

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13.5 because 4.5 times 3 is 13.5

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3 years ago

157/14 written as a Mixed number

Korvikt [17]

Answer:

11 3/14

Step-by-step explanation:

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Which of the following is the equation of a line perpendicular to the line

Taya2010 [7]

Answer:

A. - 2x + 3y = 21

Step-by-step explanation:

The perpendicular lines have opposite reciprocal slopes.

The given line has a slope of:

m = -3/2

The perpendicular slope is:

m = 2/3

And its y-intercept is:

9 = 2/3*3 + b
b = 7

The line is:

y = 2/3x + 7

Convert this into standard form and compare with answer choices:

3y = 2x + 21
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Correct choice is A

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2 years ago

Find the volume of the sphere of 2.5. Enter the EXACT answer you see on your calculator. NO ROUNDING this time.

Sergio039 [100]

2.5 what just use the formula pi•(4/3r•r)

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3 years ago

given that sin theta= 1/4, 0 is less than theta but less than pi/2, what is the exact value of cos theta

lapo4ka [179]

Answer:

$\cos{\theta} = \frac{\sqrt{15}}{4}$

Step-by-step explanation:

For any angle $\theta$ , we have that:

$(\sin{\theta})^{2} + (\cos{\theta})^{2} = 1$

Quadrant:

$0 \leq \theta \leq \frac{\pi}{2}$ means that $\theta$ is in the first quadrant. This means that both the sine and the cosine have positive values.

Find the cosine:

$(\sin{\theta})^{2} + (\cos{\theta})^{2} = 1$

$(\frac{1}{4})^{2} + (\cos{\theta})^{2} = 1$

$\frac{1}{16} + (\cos{\theta})^{2} = 1$

$(\cos{\theta})^{2} = 1 - \frac{1}{16}$

$(\cos{\theta})^{2} = \frac{16-1}{16}$

$(\cos{\theta})^{2} = \frac{15}{16}$

$\cos{\theta} = \pm \sqrt{\frac{15}{16}}$

Since the angle is in the first quadrant, the cosine is positive.

$\cos{\theta} = \frac{\sqrt{15}}{4}$

3 0

3 years ago