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3 years ago

In a department store, a $190 phone is marked, "Save 15%."

Mathematics

1 answer:

MaRussiya [10]3 years ago

7 0

Answer:

a- $28.50

b- $161.50

Step-by-step explanation:

multiply 190 and 0.15 and you get 28.5 subtract that from 190 and you get 161.5

Hope this helps!

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what is an equation of the line that s perpendicullar to y-3=-4(x+2) and passes through the point (-5,7)

Sidana [21]

Answer:

4y=x+33

y=x/4+33/4 (slope-intercept form)

Step-by-step explanation:

y-3 = -4(x+2)

y-3 -4x-8

y= -4x-8+3

y= -4x-5

m1 = -4

For perpendicularity

m2= -1/-4 = 1/4

The equation is

y-y1 = m2(x-x1)

y-7 = 1/4(x-(-5))

y-7 = x/4+5/4

Multiply through by 4

4y-28=x+5

4y=x+5+28

4y=x+33

Divide through by 4

y=x/4+33/4 (slope-intercept form)

7 0

3 years ago

Type the correct answer in each box use numerals instead of words if nessasary us /for fractions subtract write your amswer in s

exis [7]

The simplest form of the given expression $3\frac{11}{12} - 1\frac{4}{12}$ is $\frac{31}{12}$

<u>Solution:</u>

Given, expression is 3 11/12 – 1 4/12 $\rightarrow 3 \frac{11}{12}-1 \frac{4}{12}$

We have to find the simplest form of the value derived from the given expression.

Now, first let us solve the given equation.

$3 \frac{11}{12}-1 \frac{4}{12}$

converting mixed fractions to improper fractions.

$=\frac{3 \times 12+11}{12}-\frac{1 \times 12+4}{12}$

$\frac{36+11}{12}-\frac{12+4}{12}=\frac{47}{12}-\frac{16}{12}=\frac{47-16}{12}=\frac{31}{12}$

As there are no common terms to cancel it is in lowest form.

Hence, the lowest form of the given expression is $\frac{31}{12}$

3 0

3 years ago

this stem and leaf plot shows the number of text messages 10 people sent yesterday. whatis the total number of text messages the

Rudiy27

To find the total number of text messages sent, you will use the stem-n-leaf plot to create a data set of all the numbers of texts sent.

To read a stem-n-leaf plot you will use the number on the left as the tens place and each number to the right of it creates a new number in the data set.

See the key for help!

Here is the list of the all the data:

0, 0, 7, 9, 10, 10, 15, 20, 23, 32

To find the total number of text messages sent, add these together.

The answer is 126 text messages.

3 0

3 years ago

The annual 2-mile fun-run is a traditional fund-raising event to support local arts and sciences activities. It is known that th

victus00 [196]

Answer: 0.0228

Step-by-step explanation:

Given : The mean and the standard deviation of finish times (in minutes) for this event are respectively as :-

$\mu=30\\\\\sigma=5.5$