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2 years ago

Anna works at an electronics

Mathematics

1 answer:

jeka57 [31]2 years ago

5 0

Let p be the amount of sales (in dollars) of phones.

Let c be the amount of sales (in dollars) of computers.

Equation 1: sales

p + c = 2100

the amount of all sales is 2100

Equation 2: commission

0.05p + 0.07c = 119

5% commission on phones plus 7% commission on computers totals to 119

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Dilate a triangle with vertices (0,0), (0,2) and (2,0) using the scale factor k=3. What is the value of the ratio (new to origin

seropon [69]

Answer:

Part a) The ratio of the perimeters is $3$

Part b) The ratio of the areas is $9$

Step-by-step explanation:

Part A) What is the value of the ratio (new to original) of the perimeters?

we know that

If two figures are similar, then the ratio of its perimeters is equal to the scale factor

Let

z-----> the scale factor

x-----> the perimeter of the new triangle

y-----> the perimeter of the original triangle

$z=\frac{x}{y}$

we have

$z=3$

substitute

$\frac{x}{y}=3$

Part B) What is the value of the ratio (new to original) of the areas?

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z-----> the scale factor

x-----> the area of the new triangle

y-----> the area of the original triangle

$z^{2}=\frac{x}{y}$

we have

$z=3$

substitute

$\frac{x}{y}=3^{2}$

$\frac{x}{y}=9}$

3 0

4 years ago

Find the measure of the angle indicated. PLS HELP

cestrela7 [59]

Answer:

The answer is 85 degrees.

Step-by-step explanation:

This is because all four interior angles of the rectangle should add up to 360 degrees. So 360-85-95-95 equals 85.

I hope I helped you! :)

8 0

3 years ago

The double number line shows that 4 bottled of water cost 20 dollars at a music

konstantin123 [22]

It should be the answer eighty

4 0

3 years ago

Ms. Gianco buys a rug that is 10 ¾ feet x 12 ½ feet. What is the area of the rug? Show your thinking with an area model and a mu

NikAS [45]

Answer:

134.375 or 134 3/8 square feet is the area of the rug

Step-by-step explanation:

In this question, we learnt someone bought rug measuring some lengths per sides were asked to help calculate the area of the rug.

Firstly, we can see that the lengths of the two sides differ? We can thus conclude that the rug is rectangular in shape.

Hence, to calculate the area of this rug, what we do is to calculate the area of the rectangle formed by the rug.

Mathematically, the area of the rug would be = l * b

According to the question, we can identify that l = 10.75 feet(3/4 = 0.75) while the b = 12.5 feet(1/2 = 0.5 feet)

Hence the area of the rug A is thus; 10.75 * 12.5 = 134.375 sq. Feet ( 0.375 = 3/8 so we can say 134 3/8 feet)

5 0

4 years ago

Read 2 more answers

Number 8 please please please

ELEN [110]

remember that when total value is used a negative number is turned positive so it equals to 282 feet

8 0

3 years ago