3 years ago

Estimate a 15% tip on a dinner bill of $72.13 by first rounding the bill amount to the nearest ten dollars?

Mathematics

2 answers:

mixas84 [53]3 years ago

7 0

Answer:

the tip is $10.5 = $72.15= $70*.15+ $10.5

Step-by-step explanation:

Crank3 years ago

6 0

I like ur name it is very cool

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Write the sum of the numbers as the product of their gcf and another sum 58+14

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3 years ago

1/2 + (103 1/2 + 12)

butalik [34]

Answer:

Step-by-step explanation:

103 1/2 + 12 = 115 1/2

1/2 + 115 1/2 = 116.

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2 years ago

What is the logarithmic form of 9² = 81?

Scorpion4ik [409]

Answer:

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3 years ago

3. Find the slope of the line that goes through the following points: (6.-1) and (-3, 11)

Alik [6]

Answer:

1.33

Step-by-step explanation:

y2-y1/x2-x1

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2 years ago

What are the zeros of the quadratic function?<br> y = x^2 - 2x - 15

Pie

Answer:

$x=\frac{1+\sqrt{31}}{2},\:x=\frac{1-\sqrt{31}}{2}$

Step-by-step explanation:

$-> 0=2x^2-2x-15$

-zeros means the solution aka x intercept, meaning y=0

$x_{1,\:2}=\frac{-\left(-2\right)\pm \sqrt{\left(-2\right)^2-4\cdot \:2\left(-15\right)}}{2\cdot \:2}$

=> according to quadratic formula

$x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

where $ax^2+bx+c=0$

=> $x_{1,\:2}=\frac{-\left(-2\right)\pm \:2\sqrt{31}}{2\cdot \:2}$

simplify

$x_1=\frac{-\left(-2\right)+2\sqrt{31}}{2\cdot \:2},\:x_2=\frac{-\left(-2\right)-2\sqrt{31}}{2\cdot \:2}$

$x=\frac{1+\sqrt{31}}{2},\:x=\frac{1-\sqrt{31}}{2}$

Cannot simplify farther

3 0

2 years ago