3 years ago

Can you help me with this, please?

Mathematics

1 answer:

spin [16.1K]3 years ago

3 0

Answer:

i have did thiskmlm'kl

Step-by-step explanation:

alot

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Given: m∠1 = 140°, find m∠6.<br> A) 40° <br> B) 50° <br> C) 90° <br> D) 140°

laila [671]

Answer:

The answer is A

Step-by-step explanation:

When two parallel lines are crossed by another line the angle of 1 will be equal to 4, 5, and 8. The angle 2 will be equal to 3, 6, and 7. Since a straight line has a degree of 180, the subtracted degree of 180-140=40 which would mean 2=40 which 2=6 so 6=40.

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3 years ago

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gogolik [260]

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3 years ago

Expand and simplify (<img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D" id="TexFormula1" title="2x^{2}" alt="2x^{2}" align="absmidd

kupik [55]

Answer:

2x(5x + 14) + 15

Step-by-step explanation:

Given: (2 $x^{2}$ + 3)(4x + 5) - 8x( $x^{2}$ - 2)

(2 $x^{2}$ + 3)(4x + 5) - 8x( $x^{2}$ - 2) = 2 $x^{2}$ (4x + 5) + 3(4x + 5) - 8x( $x^{2}$ - 2)

= (8 $x^{3}$ + 10 $x^{2}$ + 12x + 15) - 8 $x^{3}$ + 16x

= 8 $x^{3}$ + 10 $x^{2}$ + 12x + 15 - 8 $x^{3}$ + 16x

collecting like terms to have,

8 $x^{3}$ - 8 $x^{3}$ + 10 $x^{2}$ + 12x + 16x + 15

10 $x^{2}$ + 28x + 15

Thus,

(2 $x^{2}$ + 3)(4x + 5) - 8x( $x^{2}$ - 2) = 10 $x^{2}$ + 28x + 15

= 2x(5x + 14) + 15

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3 years ago

What is the 30th term of the arithmetic series 4, 7, 10, … ?

Irina18 [472]

$a_1=4;\ a_2=7;\ a_3=10\\\\d=a_2-a_1\to d=7-4=3\\\\a_n=a_1+(n-1)d\to a_n=4+(n-1)\cdot3=4+3n-3=3n+1\\\\\boxed{a_n=3n+1}\\\\a_{30}=3\cdot30+1=90+1=91\\\\Answer:\boxed{a_{30}=91}$

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4 years ago

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An air conditioning system can circulate 470 cubic feet of air per minute. How many cubic yards of air can it circulate per min

vladimir1956 [14]

Answer:

17 yards/minute.

Step-by-step explanation:

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3 years ago

Can you help me with this, please?​

Can you help me with this, please?