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Trava [24]
2 years ago
8

Emma buys and sells truck parts she bought two tires for $35 eachand later sold them for $65 each she bought three rims for $75

each and later sold them for $136 each she bought five headlight covers for $4 each and later sold them for $15 each what is Emma's total profit
Mathematics
1 answer:
alexdok [17]2 years ago
5 0

Answer:2X35=70 2X65=130 130-70=60   So 60 dollars profit for the two tires.

3X75=225 3X136=408 408-225=183  So 183 dollars profit for the three rims

5X4=20 5X15=75 75-20=55  So 55 dollars profit for the headlights.  

Total profit  60+183+55=298

  Step-by-step explanation:

 

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HELP PLEASE!!!!!!!!!!!!
Bogdan [553]

Answer:

See the explanation.

Step-by-step explanation:

We are given the function f(x) = x² + 2x - 5

Zeros :

If f(x) = 0 i.e. x² + 2x - 5 = 0

The left hand side can not be factorized. Hence, use Sridhar Acharya formula and  

x= \frac{-2+\sqrt{2^{2}-4\times(-5)\times1 } }{2} and  

x= \frac{-2-\sqrt{2^{2}-4\times(-5)\times1 } }{2}

⇒ x = -3.45 and 1.45

Y- intercept :

Putting x = 0, we get, f(x) = - 5, Hence, y-intercept is -5.

Maximum point :

Not defined

Minimum point:  

The equation can be expressed as (x + 1)² = (y + 5)

This is an equation of parabola having the vertex at (-1,-5) and axis parallel to + y-axis

Therefore, the minimum point is (-1,-5)

Domain :  

x can be any real number

Range:  

f(x) ≥ - 6

Interval of increase:

Since this is a parabola having the vertex at (-1,-5) and axis parallel to + y-axis.

Therefore, interval of increase is +∞ > x > -1

Interval of decrease:

-∞ < x < -1

End behavior :  

f(x) = x^{2} +2x-5 =x^{2}  (1+\frac{2}{x} -\frac{5}{x^{2} } )

So, as x tends to +∞ , then f(x) tends to +∞

And as x tends to -∞, then f(x) tends to +∞. (Answer)

7 0
3 years ago
What is the multiplicative inverse of -1/9
Sedaia [141]
A multiplicative inverse is the same thing as a reciprocal, which is basically just flipping the fraction and changing the sign. Therefore the multiplicative inverse of -1/9 is 9
7 0
2 years ago
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Circle A has a radius of 2.0 cm. Find the radius of circle A dialated by 9.6
tia_tia [17]
2.0² * π = 12.56637...
12.56637... * 9.6 = 120.6371579...
120.6371579.. / π = 38.4
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2 years ago
P(A) = .6, P(B) = .3, P(Β | A) = .5
Reika [66]

Answer:

A

Step-by-step explanation:

P(B|A)=\frac{A ~and~B}{P(A)} \\0.5=\frac{P(A and B)}{0.6} \\P(A~and~B)=0.5 \times 0.6=0.30

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To find the rate, we have to divide both numbers by 5. So the rate will be $1.592 for 1 pound.
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