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MariettaO [177]
4 years ago
15

HELP ( I attached pictures)!!

Mathematics
1 answer:
alexira [117]4 years ago
7 0
1)
The vertex of the graph is (1,3).

2)
The vertex of the graph is a maximum.

3)
h=0
Then:
-16t²+45t+6=0

we need solve this square equation:
t=[-45⁺₋√(2025+384)] / -32=(-45⁺₋49.08) / -32
We have two solutions:
t₁=(-45+49.08)/-32=2.94 s≈3 s
t₂(-45+49.08)/-32=-0.15 this solution is not valid.

Answer: 3 s.
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How to solve real number arithmetic
beks73 [17]

Answer/Step-by-step explanation

1. When adding real numbers with the same sign the sum will have the same sign as the numbers added.

2. When adding real numbers with different signs you subtract the lesser absolute value from the greater one. The sum will then have the same sign as the number with the greater absolute value.

3. There are a couple of properties of addition:

The additive commutative property tells us that the order in which you add the numbers does not change the sum.

4. And the additive associative property tells us that it also that the order in which we group three or more numbers does not affect the sum.

5. The additive identity property tells us that the sum of a number and 0 is always the number.

6. And the additive inverse property tells us that if you add a number with its opposite you will always get 0

4 0
3 years ago
A square pizza has an area of 144 square inches. It is
notka56 [123]

Answer:

3 by 3

Step-by-step explanation:

Since the area is 144 and there is 16 equals peices you can divide them to find the area of 1 small square piece so

144/16=9

since it is a square the side lengths are equal so

\sqrt{9}=3 so the dimensions are

3 by 3

8 0
3 years ago
Evaluate:-19 - (-10) + (20) - (30) - (-15)<br> A) -4 <br> B) -3 <br> C) 3 <br> D) 4
Tresset [83]

So firstly, remember that <u>subtracting a negative number is the same as adding a positive number</u> so our expression will look like this:

-19+10+20-30+15

Now solve as such:

\underbrace{-19+10}_{-9}+20-30+15\\\\\underbrace{-9+20}_{11}-30+15\\\\\underbrace{11-30}_{-19}+15\\\\\underbrace{-19+15}_{-4}\\\\-4

<u>Your answer is -4, or A.</u>

4 0
3 years ago
Read 2 more answers
If the area of a circle is 64 pie square centimeters, then what is its radius
andrey2020 [161]

Answer:

8

Step-by-step explanation:

A=πr^2

64π=πr^2

since answer is in terms of pi, ignore the pi.

sqrt(64)=8

3 0
3 years ago
Match each point with one of the following fractions 5/6, 7/12, 1/8, 5/16
BabaBlast [244]
What you need to do is make each fraction into a decimal and then put them in order from least to greatest.

7/12=0.583

1/8= 0.125

5/16= 0.3125

5/6= 0.83

The order for this is 0.3125, 0.125, 0.583, and 0.83. So the answer is last option
3 0
4 years ago
Read 2 more answers
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