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Rama09 [41]
3 years ago
15

A ball is dropped from the top of a 550 ft. building. The function h\left( t \right) = - 16{t^2} + 550h(t)=−16t2+550 models the

height of the ball, h(t) (in feet), at any given time, t (in seconds). How long does it take the ball to reach the ground?
Mathematics
1 answer:
rosijanka [135]3 years ago
6 0
It has to be 3.64 because of the hieght
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If one of the angels of a triangle is 127 it’s called
KonstantinChe [14]

Answer:

obtuse triangle

Step-by-step explanation:

only one angle in a triangle has to be over 90 degrees for it to be and obtuse triangle

hoped this helped

7 0
3 years ago
Y = 3/2x + 5/4 −2x + 8y = −25
Andreyy89

Answer:

<h2>x = -347 1/2</h2>

Step-by-step explanation:

When solving algebra, it is important the we follow the steps in correct order and check our answer at the end.

Step 1: Simplify by combining like terms

y = -x/2 + 5/4 + 8y = -25

Step 2: Substitute

y = -25

-25 = -x/2 + 5/4 + 8(-25)

-25 = -x/2 + 5/4 + -200

-25 = -x/2 - 198 3/4

Step 3: Answer

x = -347 1/2

Step 4: Check

y = 3/2x + 5/4 −2x + 8y = −25

-25 = 3/2(-347 1/2) + 5/4 −2(-347 1/2) + 8(-25)

-25 = -25✔️

Step 5: Verified Answer

x = -347 1/2

I'm always happy to help :)

3 0
3 years ago
Find the area of a triangle with a base length of 3 units and a height of 4 units. 3 square units 6 square units 7 square units
yan [13]

For this case we have that by definition, the area of a triangle is given by:

A = \frac {b * h} {2}

Where:

b: It is the base of the triangle

h: It is the height of the triangle

According to the data of the statement we have:

b = 3 \ units\\h = 4 \ units

Substituting in the formula we have:

A = \frac {3 * 4} {2} = \frac {12} {2} = 6 \ units ^ 2

So, the area of the triangle is6 \ units ^ 2

Answer:

6 \ units ^ 2

8 0
3 years ago
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The mean temperature for the first 7 days in January was 3 °C.
g100num [7]

Answer:

<u><em>3.5 °C</em></u>

Step-by-step explanation:

  • To find the answer multiply 3 and 7 to get the sum of the temperatures in the first seven days.

        3 x 7 = 21

  • Add 21 and 8 together to get the sum of the temperatures in the first 8 days.

        21 + 8 =29

  • Divide 29 by 8 to get the mean temperature for the first eight days.

       29 ÷ 8 = 3.5

       3.5 °C

8 0
3 years ago
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If x= -3 and y=-4, <br> then xy – 2x=
gogolik [260]

Step-by-step explanation:

xy - 2x = ( - 3) \times ( - 4) - 2( - 3)

= 12 + 6

= 18

4 0
2 years ago
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