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andreyandreev [35.5K]
3 years ago
6

(20x2-7x-3)-(9x2-12x-5)

Mathematics
1 answer:
BARSIC [14]3 years ago
5 0

Answer:

-17

Step-by-step explanation:

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<img src="https://tex.z-dn.net/?f=A%28x%29%3D3%5E2" id="TexFormula1" title="A(x)=3^2" alt="A(x)=3^2" align="absmiddle" class="la
kogti [31]
It is good equation. Look, that:
81 = 3 x 3 x 3 x 3 = 3^4.
So you have to solve:
3^x = 3^4 
exponents have to be the same, so
x=4
That's mean that A(4) = 81

5 0
2 years ago
Read 2 more answers
Fill 350 milliliter bottles from a 30 liter drum how many bottles
Mama L [17]

Answer:

  85

Step-by-step explanation:

0.350 L × n = 30 L . . . . . where n is the number of bottles.

Divide by 0.350:

  n = (30 L)/(0.350 L) ≈ 85.7

85 bottles can be filled, and one can be partially filled.

_____

Of course, you know the SI prefix milli- means 1/1000, so 350 mL = 350/1000 L = 0.350 L. When you do the division indicated above, ...

  (30 L)/(0.350 L)

the units of liters cancel, and you are left with the number of bottles.

6 0
2 years ago
Alan bought 20 yards of fencing. He used 5.9 yards in one garden and 10.3 in another. Write remaining as a fraction in simplest
Over [174]
Its 3.8 because if you add 5.9 and 10.3 is 16.2, and if you subtract it by 20, it should equal 3.8.
7 0
2 years ago
Read 2 more answers
I will give the BRAINIEST!!! Please help!!
pishuonlain [190]

Answer:

a. y= -5/2x -4

Step-by-step explanation:

An equation that is perpendicular to another equation must have the opposite slope. In other words, the perpendicular equation will be the opposite sign & the reciprocal of the equation it is perpendicular to. In this case, the perpendicular slope is -5/2x. Therefore, the only answer possible is a.

3 0
3 years ago
Write an equation in slope-intercept form of the line that passes through the points (-2,10) and (5. – 11).
JulijaS [17]

Answer:

y=-3x+4

Step-by-step explanation:

I just use desmos to graph it and find the line of fit.

6 0
2 years ago
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