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4 years ago

I can't figure this out I need help. please help

Mathematics

1 answer:

Tanya [424]4 years ago

7 0

So to find the area you should draw a line to make a right triangle then take the area of the 3 figures and add them together. See the picture.

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Melissa's box has 5 numbered pool balls and David's box has 3 numbered pool balls. Melissa randomly picks one ball from her box.

Softa [21]

Mellisa will win because she has alot of balls

4 0

3 years ago

What is the value of k(-3) when k(t) = -|4t|

Fantom [35]

Answer:

-12

Step-by-step explanation:

You can find the value of k(-3) by substituting t = -3 into the absolute value function k(t) = -|4t|.

k(-3) = -|4*-3| = -|-12| = -12

6 0

3 years ago

Which expression shows a way to find 20% of 950? Please I need help thanks.

wolverine [178]

Answer:

the answer of the expression is 190

Step-by-step explanation:

Given expression as :

20 % of 950

Or, $\frac{20}{100}$ times 950

Or, $\frac{20}{100}$ × 950

Or, 20 × $\frac{950}{100}$

or, 20 × 9.5

∴ 190

7 0

4 years ago

Part 5. Use the laws of sines. Please show work. Round to the nearest tenth.

vlabodo [156]

Answer: 17) 41.0° 18) 60.8° 19) 36.0° 20) 19.7°

<u>Step-by-step explanation:</u>

Law of Cosines: a² = b² + c² - 2bc · cos A

b² = a² + c² - 2ac · cos B

c² = a² + b² - 2ab · cos C

17) a = 29, b = 13, c = 21, C = ???

c² = a² + b² - 2ab · cos C

21² = 29² + 13² - 2(29)(13) · cos C

441 = 841 + 169 - 754 cos C

441 = 1010 - 754 cos C

-569 = -754 cos C

$\dfrac{569}{754}=\cos C\\\\\cos^{-1}\bigg(\dfrac{569}{754}\bigg)=C$

41.0° = C

18) a = 29.3, b = 25.7, c = 16.8, B = ???

b² = a² + c² - 2ac · cos B

25.7² = 29.3² + 16.8² - 2(29.3)(16.8) · cos B

660.49 = 858.49 + 282.24 - 984.48 cos B

660.49 = 1140.73 - 984.48 cos B

-480.24 = -984.48 cos B

$\dfrac{480.24}{984.48}=\cos B\\\\\cos^{-1}\bigg(\dfrac{480.24}{984.48}\bigg)=B$

60.8° = B

19) a = 12, b = 19, c = 11, A = ???

a² = b² + c² - 2bc · cos A

12² = 19² + 11² - 2(19)(11) · cos A

144 = 361 + 121 - 418 cos A

144 = 482 - 418 cos A

-338 = -418 cos A

$\dfrac{338}{418}=\cos A\\\\\cos^{-1}\bigg(\dfrac{338}{418}\bigg)=A$

36.0° = A

20) a = 10, b = 9, c = 18, A = ???

a² = b² + c² - 2bc · cos A

100² = 9² + 18² - 2(9)(18) · cos A

100 = 81 + 324 - 324 cos A

100 = 405 - 324 cos A

-305 = -324 cos A

$\dfrac{305}{324}=\cos A\\\\\cos^{-1}\bigg(\dfrac{305}{324}\bigg)=A$

19.7° = A

3 0

3 years ago

Read 2 more answers

The table shows the height of a plant as it grows. What equation in point-slope form gives the plant’s height at any time?

hammer [34]

Answer:

Slope is 3/4

Equation in slope intercept form is given by: $y=\frac{3}{4}x+9$

Step-by-step explanation:

Pick any two points from the table say (4,12) and (8,15).

Slope is given by formula:

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{15-12}{8-4}=\frac{3}{4}$

Now plug the value of slope m=3/4 and any point say (4,12) into point slope formula:

$y-y_1=m\left(x-x_1\right)$

$y-12=\frac{3}{4}\left(x-4\right)$

$y-12=\frac{3}{4}x-3$

$y=\frac{3}{4}x-3+12$

$y=\frac{3}{4}x+9$

Hence final answer in slope intercept form is $y=\frac{3}{4}x+9$

5 0

3 years ago