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Drupady [299]
3 years ago
10

I need help figuring this out plz

Mathematics
1 answer:
mr_godi [17]3 years ago
8 0

Answer:

y=60 degrees

x=90 degrees

Step-by-step explanation:

If you look at x, you can tell by it's angle that it is 90 degrees. A square has 4 sides with 90 degrees on each side, that angle is 1/4 of a square, making it a 90 degree angle, and a triangle has 3 sides, all 60 degrees, if you look at y, you can see that angle is 1/3 of a triangle, giving it a 60 degree angle.

Hope this helps!

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The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 9
mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

<em>The height </em>h(t)<em> of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation </em>h(t) = 3 +90\cdot t -16\cdot t^{2}<em>, where </em>t<em> is time in seconds. After how many seconds will the ball be 84 feet above the ground. </em>

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

3+90\cdot t -16\cdot t^{2} = 84

16\cdot t^{2}-90\cdot t +81 = 0 (1)

By Quadratic Formula:

t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}

t_{1} = 4.5\,s, t_{2} = 1.125\,s

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

3 0
3 years ago
Solve using the unit rate problems find the constant speed 60 miles in 1.5 hours what is the answer.
kherson [118]
40 miles per hour. if you take 60 divided by 1.5(the speed over time) you get 40mph
7 0
3 years ago
I NEED HELP PLS
Alisiya [41]

Answer:

114.5 in³

Step-by-step explanation:

Volume of cone:

⅓ × 3.14 × 8² × 12

= 803.84 cm³

Volume of hemisphere:

⅔ × 3.14 × 8³

= 1071.786667 cm³

Total = 803.84 + 1071.786667

= 1875.626667 cm³

1 cm = 0.393701 inches

1 cm³ = 0.393701³ inches

Volume in in³:

1875.786667/0.393701³

= 114.4579471 in³

7 0
3 years ago
Pls HELP AND EXPLAIN BRAINLIEST AND 15 POINTS
zhuklara [117]
The first one is 7.4 . 39/5=7 and 4 change so 7.4 . The second one is 1.67 . 5/3 is 1.6 repeated and rounded to the nearest houndredth is 1.67
7 0
3 years ago
A, B, C, D, E and F are points on a circle. put crosses on the ends of the line that is a diameter of the circle
Step2247 [10]

9514 1404 393

Answer:

  AD is the diameter

Step-by-step explanation:

Angles in a triangle have a sum of 180°, so inscribed angle B is 80° and inscribed angle E is 90°.

An inscribed angle subtends an arc that is twice its measure, so arcs ABD and AED are both 180°. That makes chord AD a diameter.

Points A and D need your cross markings. AD is a diameter of the circle.

3 0
3 years ago
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