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2 years ago

James drives a distance of 320 miles in 4 hours. What was his speed?

Mathematics

1 answer:

Nataly_w [17]2 years ago

5 0

Answer: D

Step-by-step explanation:

because 320/4 = 80 mi/hr because it can not km or min and hr^2 would not make any sense

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Which of the following equations represents a line parallel to the line given by y=5x +9?

erma4kov [3.2K]

Answer:

y = 5x + 1

Step-by-step explanation:

Lines that are parallel to each other on a graph would have the same slope but different y-intercepts. When option A's equation is graphed along with the line given in the question, the lines appear to be parallel.

Option A should be the correct answer.

7 0

2 years ago

Which of the following are identities? Check all that apply

Natasha2012 [34]

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

$\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}$

Double angle $tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}$

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula $sin2\alpha =2sin\alpha *cos\alpha$

$sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)$

D) False No further development towards a Trig Identity

$[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)$

7 0

2 years ago

Read 2 more answers

WILL MARK BRAINLEIST!! Each figure is composed of large squares and small squares. The side length of the

julsineya [31]

9514 1404 393

Answer:

A. x² -4

B. 2x² +8

Step-by-step explanation:

The area of a square is the square of the side lengths. That means the area of each large square is x², since it has a side length of x.

A. The area of 4 small squares is subtracted from the area of the large square to find the shaded area:

x² -4×1² = x² -4 . . . area of Figure A

B. The area of two small squares is added to the area of two large squares to find the shaded area:

2x² +2×2² = 2x² +8 . . . area of Figure B

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2 years ago

Math6. Grade 6.

Iteru [2.4K]

2 (6 x+6)= ?
12 x+ 12=
12 x= -12
x= -1
So first you take what is outside the "( )" and you multiply it with what's in the "( )" so that gave us 12 because 2*6= 12.

8 0

2 years ago

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I need help with this calculus question

Bezzdna [24]

- 47 → d

using the ' product rule '

$\frac{d}{dx}$ (uv) = uv' + vu' = (3 × - 4) + (7 × - 5 ) = - 12 - 35 = - 47

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2 years ago

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