3 years ago

If M = 5x2 + 7x-4 and N = -3x2-4x+5, then M -N equals

Mathematics

1 answer:

Yuki888 [10]3 years ago

6 0

Answer:

M-N=4

Step-by-step explanation:

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In the year 2008, a person bought a new car for $26500. For each consecutive year

DanielleElmas [232]

Answer:

$20500

Step-by-step explanation:

26500-(.12*26500)=23320 For 1 year

23320-(.12*23320)=$20521.60 For 2 years

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3 years ago

Find all complex solutions of 5x^2+5x+3=0.

oksian1 [2.3K]

Answer:

see explanation

Step-by-step explanation:

5x² + 5x + 3 = 0 ← in standard form

with a = 5 , b = 5 , c = 3

Solve using the quadratic formula

x = $\frac{-b+/-\sqrt{b^2-4ac} }{2a}$

= $\frac{-5+/-\sqrt{5^2-(4(5)(3)} }{2(5)}$

= $\frac{-5+/-\sqrt{25-60} }{10}$

= $\frac{-5+/-\sqrt{-35} }{10}$

= $\frac{-5+/-\sqrt{-1(35)} }{10}$

= $\frac{-5+/-i\sqrt{35} }{10}$

Then

x = $\frac{-5}{10}$ ± $\frac{1}{10}$ i $\sqrt{35}$ , that is

x = - $\frac{1}{2}$ - $\sqrt{x} \frac{1}{10}$ i $\sqrt{35}$ , - $\frac{1}{2}$ + $\frac{1}{10}$ i $\sqrt{35}$

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3 years ago

Drag and drop the expressions into the boxes to correctly complete the proof of the polynomial identity.

Elodia [21]

did you ever get the answer? taking the thing rn help!!

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3 years ago

Jane needs to pay $36 for 2 basketballs, how much she needs to pay 3 basketballs?

OLga [1]

36 divided by 2 is 18

That mean each basketball is $18

18 dollars multiplied by 3 basketballs is 54

Three basket balls cost $54

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3 years ago

Read 2 more answers

A pair of shoes usually sells for $61. If the shoes are 40% off, and sales tax is 5%, what is the total price of the shoes, incl

lyudmila [28]

Since sale is 40% so the price is 60%

61*(60%) = 36.6

the tax is 5%

so the price after tax is: 36.6 * (1 +5%) = $38.43

4 0

3 years ago