3 years ago

A salesperson at a jewelry store earns 6% commission each week. Last week, he

Mathematics

1 answer:

erastova [34]3 years ago

5 0

Answer:

5666

Step-by-step explanation:

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Solve the following:<br> a. 4x^2 + 5x + 3 = 2x^2 − 3x<br> b. c^2 − 14 = 5c

Jet001 [13]

Answer:

(a) x = -0.418 , -3.581

(B) c = 6.855, -1.855

Step-by-step explanation:

(A) We have given equation $4x^2+5x+3=2x^2-3x$

$2x^2+8x+3=0$

On comparing with standard quadratic equation $ax^2+bx+c$

a = 2, b = 8 and c = 3

So roots of the equation will be $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-8\pm \sqrt{8^2-4\times 2\times 3}}{2\times 2}=\frac{-8\pm 6.324}{4}=-0.418,-3.581$

(b) $c^2-14=5c$

$c^2-5c-14=0$

a = 1, b = -5 and c= -14

So $c=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-(-5)\pm \sqrt{(-5)^2-4\times 1\times (-14)}}{2\times 1}=\frac{5\pm 8.71}{2}=6.855,-1.855$

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3 years ago

Manny ordered 16 skateboard wheels. If he sold 4 wheels to Brad, how many skate boards can he put wheels on if each board 4 whee

alexgriva [62]

It would be 3 cuz 16-4 =12 divide by 4 is 3

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3 years ago

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Find the equation of a line that passes through the points (-4, -2) and (6, 3).

MaRussiya [10]

Answer:

wasn't sure what you wanted us to answer, so I have the distance formula for you, and I worked it out.

Step-by-step explanation:

hope these help (:

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2 years ago

A rectangle is 9ft long and 40 in wide what is its area in square feet?

Irina-Kira [14]

The answer is 360 sqft

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3 years ago

Find the missing side of each triangle. Round your answers to the nearest tenth if necessary.

Aneli [31]

Answer:

9 miles

Step-by-step explanation:

use Pythagoras theorem

15 squared - 12 squared = 81

square root of 81 is 9

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3 years ago

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