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Stels [109]
4 years ago
8

Brainliest if right

Mathematics
1 answer:
Nina [5.8K]4 years ago
6 0

Answer:

17.40 seconds

Step-by-step explanation:

You would you the quadratic formula to get 17.40 seconds

You might be interested in
Using the p-value rule, if a null hypothesis is rejected at a significance level of 0.01, it will ________ be rejected at a sign
igomit [66]

Answer:

<u>always</u>

Step-by-step explanation:

For this hypothesis test:

<u>The Decision rule: </u> To reject the null hypothesis H_o if the p-value is lesser than < the significance level.

At the level of significance 0.01, the null hypothesis is rejected.

So, p-value < 0.01 and this typically shows that p-value is < 0.05.

Therefore, it will <u>always</u> be rejected at ∝ = 0.05

8 0
3 years ago
The perimeter of the rectangle is 76 units. Find the length of side pq
larisa [96]

Answer:   PQ=16\ units

Step-by-step explanation:

The missing figure is attached.

The perimeter of a rectangle is:

P=2l+2w

Where "l" is the lenght and "w" is the width.

You can identify in the figure that:

w=SR=PQ=2z+2\\\\l=QR=PS=3z+1

Then, knowing the perimeter of the rectangle, you can make the subsitution into the formula:

 76=2(3z+1)+2(2z+2)

Now you must simplify and solve for "z"

76=6z+2+4z+4\\\\76-6=10z\\\\70=10z\\\\\frac{70}{10}=z\\\\z=7

Finally, substituting the value of "z" into  PQ=2z+2, you get:

 PQ=2(7)+2=16\ units

6 0
3 years ago
Please help me if you can
Mrrafil [7]

Answer:

no clue :(

im so sorry :(

4 0
3 years ago
Solve the inequality -5(d-2)&gt;35
chubhunter [2.5K]

Answer:

d < -5

Step-by-step explanation:

Okay, so the equation is  -5(d-2)>35

First we have to use distributive property to get rid of the parenthesis.

we do -5(d) --> -5d

then, -5(-2) --> 10

So now we just redo the equation---

-5d + 10 > 35

now you have to isolate d, the variable

First, to isolate you have to get rid of 10. Subtract 10 on both sides.

-5d + 10 > 35

      - 10    -10

----------------------

-5d       >  25

Then you have -5d > 25. You have to do the opposite operation again to make the d by itself, so you divide -5 on each side.

   -5d > 25

   -----    -----

    -5       -5

-5d/-5 is d because the -5's cancel out. 25/-5 is -5. Now, you have to flip the equation because when working with inequalities, you have to flip the symbol.

SO,,, the answer is

d < -5

Hope this helps!!

-Ketifa

8 0
3 years ago
What are two numbers have a product of 234 and a sum of 31
STALIN [3.7K]

Answer:

Two numbers that when you multiply them and add them would give you 234 and 31 would be:

18 and 13

18*13=234

18+13=31

Hope this helps ;)

5 0
4 years ago
Read 2 more answers
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