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const2013 [10]
3 years ago
15

Complete this statement 45ax^2+27 ax+18a=9a

Mathematics
1 answer:
hichkok12 [17]3 years ago
5 0
Hello :
45ax²<span>+27 ax+18a=9a
45ax² +27ax +9a =0
</span><span>this statement is :
</span><span> - if : a= 0   this expression = 0
- if : a </span>≠ 0    this expression = 45x²+27x+9

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There are 20 pens in a package. Ten of the pens are black, 8 are blue, and the rest are red.
Serjik [45]

Answer:

1:5

Step-by-step explanation:

  Their is 2 red pens, because 20(pens) - 8(blue pens) = 12(pens [blue excluded]) and there are 10 black pens (12 - 10 = 2)

  So we can get an un-simplified ratio of 2:10, however in the list of answers you gave us:

  • 1:10
  • 1:5
  • 4:5
  • 5:1

  Their is no 2:10, so now we need to simplify our ratio by dividing both 2 and 10 by 2, 2 divided by 2 = 1 and 10 divided by 2 = 5. As we can now see this gives us the ratio of 1:5 which is our second answer choice, and therefore since 1:5 is equal to 2:10 our answer is 1:5

3 0
3 years ago
A game spinner is divided into 5 congruent sections and labeled, as shown below.
marysya [2.9K]

Answer:

G. 20

Step-by-step explanation:

The spinner has a total of 5 equally sized sections. This means that each possible outcome has an equal probability of 1/5 (0.20 in decimal form) that the spinner lands on it. Therefore, to calculate the number of times that the spinner would most likely land on "lose a turn", we need to multiply the probability that we just mentioned by the number of times the spinner will be spun...

0.20 * 100 = 20 times

Finally, we can see that the spinner will most likely land on "lose a turn" 20 times in 100 spins.

8 0
3 years ago
$6,000 dollars is invested in two different accounts earning 3% and 5% interest. at the end of one year, the two accounts earned
Anettt [7]

<u>Answer-</u>

<em>$2000</em><em> were invested at 5%</em>

<u>Solution-</u>

Let x amount of money was invested at 5% and (6000-x) amount was invested as 3%

We know that,

i=\dfrac{P\cdot r\cdot t}{100}

Putting the values,

i_1=\dfrac{P_1\cdot r_1\cdot t}{100}

i_1=\dfrac{x\cdot 5\cdot 1}{100}=\dfrac{5x}{100}

And

i_2=\dfrac{P_2\cdot r_2\cdot t}{100}

i_2=\dfrac{(6000-x)\cdot 3\cdot 1}{100}=\dfrac{3(6000-x)}{100}

According to the question,

\Rightarrow \dfrac{5x}{100}+\dfrac{3(6000-x)}{100}=220

\Rightarrow \dfrac{5x+3(6000-x)}{100}=220

\Rightarrow 5x+3(6000-x)=22000

\Rightarrow 5x+18000-3x=22000

\Rightarrow 5x-3x=22000-18000

\Rightarrow 2x=4000

\Rightarrow x=2000

Therefore, $2000 were invested at 5%

8 0
3 years ago
Read 2 more answers
Pls help me on #3. I been having trouble on this I’m not so good at math
natali 33 [55]

Answer:

I think the answer is 5 if I'm right

3 0
3 years ago
What is the equation of the line perpendicular to y=1/2x+6 that passes through points 4,1
blagie [28]
The answer is y=-2x+9 :)
5 0
2 years ago
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