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Arada [10]
3 years ago
14

What is it in standard form

Mathematics
2 answers:
sladkih [1.3K]3 years ago
4 0
Your answer is correct. A
My name is Ann [436]3 years ago
3 0
Standard form is the most simplified expression (or equation, in the case of = 0).

Use the FOIL method.

(2x + 3)(4x² + 10x  + 6)

2x(4x²) = 8x³
2x(10x) = 20x²
2x(6) = 12x
3(4x²) = 12x²
3(10x) = 30x
3(6) = 18

8x³ + 20x² + 12x² + 30x + 12x + 18

Simplify, combine like terms.

8x³ + (20x² + 12x²) + (30x + 12x) + 18

8x³ + 32x² + 42x + 18


8x³ + 32x² + 42x + 18 or A, is your answer


hope this helps
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IHELP if 1 out of 5 animals are cats then how many cats are there in an ecosystem of 200 animals???​
mote1985 [20]
There are 40 cats in the ecosystem.

You set 1/5 equal to x/200. Then you cross multiply the fractions to get 5x=200. You divide both terms by 5 to get x, which equals 40.

3 0
3 years ago
Five adult tickets and three child tickets for a movie costs £55. The cost of buying two adult tickets and three child tickets i
Allisa [31]

Answer:

  • adult £8
  • child £5

Step-by-step explanation:

If you look at the numbers you are given, you see that the first purchase has 3 more adult tickets than the second purchase, and its cost is £24 more. This means an adult ticket costs £24/3 = £8.

Two adult tickets will cost 2×£8 = £16, so three child tickets cost ...

  £31 -16 = £15

Each child ticket is then £15/3 = £5.

An adult ticket costs £8; a child ticket costs £5.

7 0
3 years ago
A pharmacist needs 500 milliliters of a 20% phenobarbital solution but has only 5% and 25% phenobarbital solutions available. Fi
sladkih [1.3K]

Let x be ml of 5% soln.

let 500-x be ml of 25% soln.

.

x*.05=.05x

(500-x)*.25=125-.25x

500*.20=100

.

.05x+125-.25x=100

-.2x=-25

x=-25/-.2

x=125 ml of 5% soln.

500-x=375 ml of 25% soln.

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Check:

125*.05= 6.25

375*.25=93.75

---------------

========100

7 0
3 years ago
A central angle of a circle measures 1.5 radians. If the radius of the circle is 3 cm, what is the area of the related sector?
soldi70 [24.7K]

Answer:

Option B. 6.75\ cm^{2}

Step-by-step explanation:

we know that

The area of a circle is equal to

A=\pi r^{2}

we have

r=3\ cm

substitute

A=\pi (3^{2})=9 \pi\ cm^{2}

Remember that

2\pi radians subtends the complete circle of area 9 \pi\ cm^{2}

so

by proportion

Find the area of the related sector for a central angle of 1.5 radians

Let

x------> the area of the related sector

\frac{9 \pi}{2\pi}\frac{cm^{2}}{radians} =\frac{x}{1.5}\frac{cm^{2}}{radians}\\ \\x=9*1.5/2\\ \\x= 6.75\ cm^{2}

7 0
3 years ago
Collins Middle School has 192 sixth grade students. If the sixth grade is 30% of the total school, how many students are in the
Sophie [7]
The answer is 640 because if you multiply the total student of 6h grade by 100 and divide by 30. You will get the total of student in the school
4 0
3 years ago
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