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3 years ago

Keshia's restaurant bill is $27.00. She wants to leave a 15% tip. How much money will Keshia need in all

Mathematics

1 answer:

guajiro [1.7K]3 years ago

3 0

Answer:

30.05

Step-by-step explanation:

10% 27 = 2.7

5% 27 =1.35

2.7+ 1.35 = 3.05

27 + 3.05 = 30.05

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Determine the sampling error if the grade point averages for 10 randomly selected students from a class of 125 students has a me

algol13

i dont know the answer but you have to add to adthem all togethor and divide it by itslef

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3 years ago

Does each equation represent exponential decay or exponential growth?

agasfer [191]

An exponential equation is represented as: $\mathbf{y = ab^x}$ , where b represents rate

Exponential growth: $\mathbf{y = 5(7)^x}$ , $\mathbf{y = 3(4.2)^x}$ and $\mathbf{y = 0.6(1.3)^x}$
Exponential decay: $\mathbf{k = 4.2(0.28)^x}$
Neither: $\mathbf{h(x) - 3x + 1.3}$

An exponential equation is said to represent growth, if the rate is greater than 1, while it represents decay if the rate is less than 1.

This means that:

$\mathbf{y = 5(7)^x}$ , $\mathbf{y = 3(4.2)^x}$ and $\mathbf{y = 0.6(1.3)^x}$ represent exponential growth because 5, 4.2 and 1.3 are greater than 1

Also,

$\mathbf{k = 4.2(0.28)^x}$ represents exponential decay because 0.28 is less than 1

While

$\mathbf{h(x) - 3x + 1.3}$ is not an exponential function

Read more about exponential functions at:

brainly.com/question/11487261

5 0

2 years ago

Ralph’s shirt company sells t-shirts for $7.50 each with a flat rate of $10 for shipping. Frank’s t-shirt company sells t-shirts

kirza4 [7]

If x is a t shirt
10+7,5x : ralph
10x : frank

5 0

3 years ago

Answer this please Answer

Sauron [17]

Answer:

A. 6/10

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Find the critical point of the given function and then determine whether it is a local maximum, local minimum, or saddle point.

34kurt

Answer:

critical point of the given function f(x,y) = x²+y²+2xy is from line y = -x is the critical point of the function f(x0,y0) = 0

and it local minimum.

Step-by-step explanation:

Let the given function be;

f(x,y) = x²+y²+2xy

From above function, we can locate relative minima, maxima and the saddle point

f(x,y) = x²+y²+2xy = (x+y)²

df/dx = 2x+2y = 0 ---- (1)

df/dy =2y+2x = 0 ---- (2)

From eqn 1 and 2 above,

The arbitrary point (x0,y0) from line y = -x is the critical point of the function f(x0,y0) = 0

Then, from f(x,y) >= 0 for arbitrary (x,y) € R^n, the arbitrary point from the line x = -y is local minima of the function f.

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4 years ago