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Vitek1552 [10]
3 years ago
12

A) 30-2x For x= -6 B) x2 + 2x For x=-3

Mathematics
2 answers:
kicyunya [14]3 years ago
7 0

Answer:

A. 42

B. 3

Step-by-step explanation:

A. 30 - (2)(-6)= 42

b. (-3)^2 + (2)(-3)= 3

Lina20 [59]3 years ago
4 0

Answer:

A. 42

B. 3

Step-by-step explanation:

Good Luck

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Please help quick!!
luda_lava [24]
C
6x^2-13X-5=0
(3X+1)(2X-5)
3x-1=0
X=1/3. 2x-5=0. X= 5/2
7 0
3 years ago
Read 2 more answers
There are approximately 113 million TVs in the United States. Each uses, on average, 76 W of power and is turned on for 6.3 hour
ioda

Answer:

76 W *\frac{1kW}{1000 W}= 0.076 kW

0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}

113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh

And finally we can convert this into money like this:

54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6

So they spent every day approximately in total $ 4815291.6 dollars

Step-by-step explanation:

For this case we can convert the average power into Kw like this:

76 W *\frac{1kW}{1000 W}= 0.076 kW

Now on average we know that one person use on average this power over 6.3 hours per day so then we have the following consumption rate:

0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}

And now we know the total population so then the total consumption per day would be:

113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh

And finally we can convert this into money like this:

54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6

So they spent every day approximately in total $ 4815291.6 dollars

6 0
3 years ago
Read 2 more answers
What is the sum of the first 10 terms of the sequence defined by an=2n-3
makvit [3.9K]
a_n = 2n - 3

\text {When n = 10,}

a_{10} = 2(10) - 3

a_{10} = 17 \text { Answer (B)}

------------------------------------------
Answer: The 10th term is 17.
------------------------------------------

5 0
3 years ago
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What does one third plus one fifth equal
White raven [17]
The answer is eight over fifteen ( 8/15)
4 0
3 years ago
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An oblique cylinder has a diameter of 14 units. The volume of the cylinder is 1,176π cubic units.
Kaylis [27]

Answer:

24 units


Step-by-step explanation:

The volume of the cylinder = πr²x

Where r is the radius of the base and x is the height of the cylinder.

πr²x = 1,176π

π×(14/2)²x = 1,176π

dividing by π both sides,

(14/2)²x = 1,176

7²x = 1,176

49x = 1,176

x = 1,176/49

  = 24 units


7 0
3 years ago
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