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svlad2 [7]
3 years ago
10

Solving quadratic equation(2m+3)(4m+3)=0

Mathematics
1 answer:
Basile [38]3 years ago
7 0
8m^2+18m+9=0

Multiply 2m by 4m to get 8m^2. Multiply 2m by 3 to get 6m. Multiply 3 by 4m to get 12m. Add the 6m and 12m to make 18m. Multiply 3 by 3 to get the integer 9. Set it all equal to 0.
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pedro has scores of 88,80.83 and 74 after four tests. what score must he make on his fifth test to have an average of 76 or grea
daser333 [38]

We start to solve this by looking for the formula that let us calculate an average value, this formula would be:

save=\frac{1+s2+s3+s4+s5}{5}

where Save is the average score and s is the score of each exam, Since we know the value of the score Save and 4 of the exams we can replace them in the formula, like this:

And we can solve for s5, which is the score that we need to find, like this:

\begin{gathered} 74\times5=\frac{88+80+83+74+s5}{5}\times5 \\ 74\times5=88+80+83+s5 \\ 74\times5-88-80-83-74=88+80+83+74-88-80-83-74+s5 \\ 74\times5-88-80-83-74=s5 \\ s5=74\times5-88-80-83-74=55 \end{gathered}

Then, Pedro must have a 55 score on the fifth test

3 0
8 months ago
Jack is filling a circular hot tub with water from a hose. The diameter of the hot tub is 6 feet, and the depth of the water inc
mario62 [17]

Answer:

B (I think)

Step-by-step explanation:

I believe it's B, sorry if I'm wrong.

5 0
3 years ago
What is 5/7 equivalent to
Lina20 [59]
If you're looking for the decimal it is

0.71428571428
4 0
3 years ago
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The price of gold has increased by 35% per year from 2000. In the year 2000, Harry bought a gold ring for $590. Which of the fol
Finger [1]
The function representing the price of the ring x years after 2000 is f(x) = (100 + 35)/100 *x + 590 = 135/100 *x + 590 = 1.35x + 590
i.e. f(x) = 1.35x + 590
3 0
2 years ago
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In each figure below, find m<1 and m<2 if a is parallel to b. You don't have to show work.
Gekata [30.6K]

Answer:

m <5 = 71 degrees.

m <8 = 109 degrees.

5 0
2 years ago
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