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2 years ago

I’m not sure ???????????

Mathematics

1 answer:

ad-work [718]2 years ago

4 0

The picture is omitting the question

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K + 9 = 17 What does k value? k=8 k=9 k=17 k=26

belka [17]

Answer:

Step-by-step explanation:

k + 9 = 17

subtract 9 from both sides:

k = 8

6 0

2 years ago

Read 2 more answers

Please help? What is the tangent ratio of angle B?

bearhunter [10]

Answer:

Step-by-step explanation:

The tangent equation = side opposite angle / side beside angle

which in this case is $tan\alpha =AC/ BC$

which is the third choice

Hope that helps!

5 0

2 years ago

Mark spent 1/3 of an hour reading his Bible. How many minutes did he read his Bible?

madam [21]

Answer:

20 minutes

Step-by-step explanation:

60/3=20

hope this helps :)

5 0

3 years ago

A ball is thrown downward from a cliff. Its position at time t seconds is given by the formula s(t) = 16t2 + 32t, where s is in

Rom4ik [11]

Answer:

It takes 2.8 seconds for the ball to fall 215 ft.

Step-by-step explanation:

We are given a position function s(t) where s stands for the number of feet the ball has fallen, so we have to replace s with the given value of 215 ft and solve for the time t.

Setting up the equation.

The motion equation is given by

$s(t) =16t^2+32t$

We can replace there s = 215 ft to get

$215=16t^2+32t$

Solving for the time t.

From the previous equation we can move all terms in one side to get

$16t^2+32t-215=0$

At this point we can solve for t using quadratic formula.

$t = \cfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

where a, b and c are the coefficients of the quadratic equation

$at^2+bt+c=0$

So we get

$a=16\\b=32\\c=-215$

Replacing on the quadratic formula we get

$t = \cfrac{-32\pm \sqrt{32^2-4(16)(-215)}}{2(16)}$

Using a calculator we get

$t=-4.8 , t = 2.8$

Physically speaking the only result that makes sense is to move forward in time that give us t = 2.8 seconds.

We can conclude that it takes 2.8 seconds for the ball to fall 215 ft.

3 0

2 years ago

Point D is in the interior of ∠ABC. What is m∠DBC?

Rudiy27

37.5 degrees

we know angled like this always have 180 degrees total between the 2. which means we can set up a little equation to solve for x. The equation is (3x+22)+(x-4)= 180. Initially we can take the solid numbers (22 and -4) and get rid of them by taking them to the 180. 180- 22 is 158. 158 + 4 is 162. now we have 3x + x = 162. we combine like terms. means we end up with 4x =162. We now divide by 4 which means we get 40.5. Now we know x is 40.5. Now dbc is just 40.5- 4 which is 37.5.

3 0

2 years ago