3 years ago

Simplify 4x + 8-5x +3a +4x-9e

Mathematics

1 answer:

disa [49]3 years ago

8 0

Answer:

3x+3a-9e+8

Step-by-step explanation:

(4x+4x-5x)+3a-9e+8

8x-5x+3a-9e+8

3x+3a-9e+8

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How mamy ways can you add three differemt numbers to get a sum of 20

LenaWriter [7]

You can do 5+5+10, 6+6+8, 9+9+2, 4+4+12, 3+3+14, 2+2+16, 1+1+18. I believe these are all of them, so there are 7 ways.

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3 years ago

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Evaluate the expression if m = – 4, n = 1, p = 2, q = –6, r = 5, and t = -2.<br><br> |3r + 6m

fgiga [73]

Answer:

m=4,2=9, and r=. (Examples 1-6). 1. 3+ m 7. 2. z-m 5. | 3. 12r 2

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2 years ago

Isabel drove 864 miles in 12 hours.<br> At the same rate, how many miles would she drive in 7 hours?

lyudmila [28]

Answer:

504 miles

Step-by-step explanation:

Make a proportion

$\frac{864}{12}$ = $\frac{x}{7}$

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3 years ago

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Point b has coordinates (-8,15) and lies on the circle whose equation is x^2+y^2=289. If an angles is drawn in standard position

Alenkinab [10]

Answer:

$\cos \theta=-\dfrac{8}{17}$

Step-by-step explanation:

Coordinates of Point b $=(-8,15)$

b lies on the circle whose equation is $x^2+y^2=289$

$x^2+y^2=17^2$

Comparing with the general form a circle with center at the origin: $x^2+y^2=r^2$

The radius of the circle =17 which is the length of the hypotenuse of the terminal ray through point b.

For an angle drawn in standard position through point b,

x=-8 which is negative

y=15 which is positive

Therefore, the angle is in Quadrant II.

$\cos \theta=\dfrac{Adjacent}{Hypotenuse} \\$Adjacent=-8\\Hypotenuse=17\\\cos \theta=\dfrac{-8}{17} \\\cos \theta=-\dfrac{8}{17}$

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3 years ago

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