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3 years ago

What's the area of the following triangle?

Mathematics

2 answers:

meriva3 years ago

7 0

Answer:

30 inches squared.

Step-by-step explanation:

Area of triangle is equal to base times height divided by 2.

$\frac{bh}{2}$

$\frac{10 \times 6}{2}$

$\frac{60}{2}=30$

Tomtit [17]3 years ago

4 0

Answer:

The answer is 30 inch^2.

Step-by-step explanation:

Okay, so to find the area just do the regular: length times width

- 6 time 10 = 60.

However, this is a triangle so u have to divide it by 2.

60/2 = 30 in.^2

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If y varies directly as x^2 and y=12 when x=2, find y when x=5

Shkiper50 [21]

$y=ax^2\\\\y=12\ \ \ and\ \ \ x=2\ \ \ \Rightarrow\ \ \ 12=a\cdot 2^2\ \ \ \Rightarrow\ \ \ a= \frac{4}{12}= \frac{1}{3} \\\\y=\frac{1}{3} x^2\\\\x=5\ \ \ \Rightarrow\ \ \ y=\frac{1}{3} \cdot5^2=\frac{25}{3} =8\frac{1}{3}$

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3 years ago

Suppose you went to a carnival. The price to get in was $6, and you paid $0.50 to get on each ride. If you went to the carnival

kondor19780726 [428]

11.50$
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8 0

3 years ago

Read 2 more answers

Find the exact value of cos theta, given that sin thetaequalsStartFraction 15 Over 17 EndFraction and theta is in quadrant II.

vova2212 [387]

Answer:

$cos \theta = -\frac{8}{17}$

Step-by-step explanation:

For this case we know that:

$sin \theta = \frac{15}{17}$

And we want to find the value for $cos \theta$ , so then we can use the following basic identity:

$cos^2 \theta + sin^2 \theta =1$

And if we solve for $cos \theta$ we got:

$cos^2 \theta = 1- sin^2 \theta$

$cos \theta =\pm \sqrt{1-sin^2 \theta}$

And if we replace the value given we got:

$cos \theta =\pm \sqrt{1- (\frac{15}{17})^2}=\sqrt{\frac{64}{289}}=\frac{\sqrt{64}}{\sqrt{289}}=\frac{8}{17}$

For our case we know that the angle is on the II quadrant, and on this quadrant we know that the sine is positive but the cosine is negative so then the correct answer for this case would be:

$cos \theta = -\frac{8}{17}$

5 0

3 years ago

Dilly is 7 years younger than Dally. In 4 years time she will be half Dally’s age. What is the sum of their ages now?

Step2247 [10]

Answer:

<u>The sum of their ages now is 13</u>

Step-by-step explanation:

Dally's age = x

Dilly's age = x - 7

In 4 years time Dilly will be half Dally’s age, therefore:

Dilly's age plus four equals to half of Dally’s age plus four,

replacing with the values and variables we know:

x - 7 + 4 = (x + 4) /2

x - 3 = (x + 4) /2

2x - 6 = x + 4 (Multiplying by 2 at both sides)

2x - x = 4 + 6 (Like terms)

x = 10 ⇒ x - 7 = 3

<u>The sum of their ages now is 13 (10 + 3)</u>

4 0

3 years ago

Which formula could be used to find the volume of a cube with side length equal to s?

aliina [53]

Answer:

s cubed

Step-by-step explanation:

bc volume is length times width times height so it would be s times s times s which is s cubed

6 0

3 years ago