3 years ago

Help please i really need it asap

1 answer:

3 0

The expression coud be re written:

12x²y/2xy + 6xy/2xy + 4x²/2xy . Simplify numerator & denominator whenever it is possible:

6x-3+2x/y

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1/3×7= 2 2/3×9= 3 1/5÷8=

Mrac [35]

1/3×7= 7/3

2 2/3×9= 8/3 x 9 = 72/3 = 24

3 1/5÷8= (16/5 ) / 8 = 16/5 x 1/8 = 16/40 = 4/10 = 0.4

4 0

4 years ago

Read 2 more answers

As John walks 16 ft towards a chimney, the angle of elevation from his eye to the top of the chimney changes from 30° to 45°. Id

levacccp [35]

ANSWER

The height is $22ft$

EXPLANATION

Let the height of the chimney be x.

$\tan(45 \degree) = \frac{x}{y}$

$1 = \frac{x}{y}$

$x = y$

$\tan(30 \degree) = \frac{x}{16+ y}$

$\frac{ \sqrt{3} }{3} = \frac{x}{16 + y}$

Cross multiply

$\sqrt{3} (16 + y) = 3x$

$16 \sqrt{3} + y \sqrt{3} = 3x$

Put

$y = x$

into the equation;

$16 \sqrt{3} + x \sqrt{3} = 3x$

Group similar terms:

$16 \sqrt{3}= 3x - x \sqrt{3}$

$16 \sqrt{3}= (3 - \sqrt{3})x$

$\frac{16 \sqrt{3} }{3 - \sqrt{3} } = x$

$x=21.856$

The height of the chimney to the nearest feet is 22

6 0

3 years ago

What is the equation of the line with a slope of -4 and a y-intercept of 2?

Dimas [21]

Answer:

y = -4x + 2

Step-by-step explanation:

plug slope (m) and y intercept (b) into y = mx + b

y = -4x + 2

7 0

3 years ago

The cost of 2 bags of rice is $3.00. whats the cost for 5 bags

timurjin [86]

Answer:

2 bags = $3.00

5 bags = ?

5 × 3.00 /2

15.00/2

7.5

7.5 $

3 0

3 years ago

Someone hmu I’m bored Also what’s 2+2

bulgar [2K]

Answer:4

Step-by-step explanation:i want brainist plz

5 0

4 years ago

Read 2 more answers