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3 years ago

10 construct your

Mathematics

2 answers:

Serjik [45]3 years ago

4 0

Answer:

$15.00

Step-by-step explanation:

Bill Amount: $

Tip Percent: %

Divide By:

how many people?

Round up:

to whole dollars?

Answer:

Tip Total: $ 3

Total (Bill + Tip): $ 15

Solnce55 [7]3 years ago

3 0

All you have to do is multiply 12 times .20 when you get your answer you add that to 12 and that’s your answer

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you are sitting on the edge of a pool with your legs in the water .as light waves pass from the pool into the air it look like y

dem82 [27]

Answer: The reason they do this is water refraction. I don't know if this was a question or not, but here you go.

6 0

3 years ago

The height of an adult male is known to be normally distributed with mean of 175 cm and standard deviation of 6 cm. The 20th per

dusya [7]

Answer:

The height below which 20% of the persons lie equals 169.95 cm

Step-by-step explanation:

Given that

Mean height = 175 cm

Standard deviation = 6 cm

Hence for the given question we need to find the standard variate factor ( Z factor) corresponding to the 20% of the area under the standard normal distribution curve

Using the standard normal distribution tables we have Z factor corresponding to an area of 20% equals ( Z = -0.84166)

Thus we have

$Z=\frac{X-\bar{X }}{\sigma }\\\\\Rightarrow -0.84166=\frac{X-175}{6}\\\\\therefore X=-0.84166\times 6+175\\\\X=169.95cm$

6 0

4 years ago

What is the range of f(x)=1/7(9)^x

Phantasy [73]

The Rnge of f(x)=1/7(9)^x is 0 to infinty
y|y>0

4 0

3 years ago

The sum of six and four times d is the same as d minus nine

Rina8888 [55]

<span>The sum of six and four times d is the same as d minus nine
</span>6 +4d = d - 9
if you need to solve for d then
6 +4d = d - 9
3d = -15
d = -5

hope it helps

6 0

3 years ago

Use the graph or table to find the equation that represents the relationship.

faust18 [17]

The equations of the functions are y = 3x - 5 and y = 3.25x + 2

<h3>What are linear equations?</h3>

Linear equations are equations that have constant average rates of change.

Note that the constant average rates of change can also be regarded as the slope or the gradient

<h3>How to write an equation for the tables?</h3>

The given parameters are the datasets represented by the tables

On the table, we have the following points

(x, y) = (2, 1) and (1, -2)

Calculate the slope using

m = (y2 - y1)/(x2 - x1)

So, we have

m = (-2 - 1)/(1- 2)

Evaluate

So, we have

m = 3

The linear equation is then calculated as

y = m(x - x1) + y1

So, we have

y = 3(x - 2) + 1

Evaluate

y = 3x - 5

For the second table, we have

Slope, m = (12 + 1)/(18 - 14)

Evaluate

So, we have

m = 3.25

The linear equation is then calculated as

y = m(x - x1) + y1

So, we have

y = 3.25(x - 0) + 2

Evaluate

y = 3.25x + 2

Hence, the equations of the functions are y = 3x - 5 and y = 3.25x + 2