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3 years ago

The price of a wireless phone increased by 14% to $165. What was the original price to the nearest dollar?

1 answer:

5 0

If the original prize was x then what happened was that

114%x=165

or
$\frac{114}{100}$ x=165

so we have to mupliply both sides by 100:

114x=16500

and divide by 114:

x= $\frac{16500}{114}$ = $\frac{8250}{57}$ =144 $\frac{42}{57}$

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miss Akunina [59]

Answer:

$y_2 = (x_2 - x_1) +y_1$ .

Implied: $x_2\ne x_1$ .

Step-by-step explanation:

Get rid of the denominator by multiplying both sides of this equation with $(x_2 - x_1)$ :

$m(x_2 - x_1) = y_2 - y_1$ .

Isolate $y_2$ by moving $(-y_1)$ to the left-hand side of the equation. That is: add $y_1$ to both sides of this equation.

$m(x_2 - x_1) + y_1 = y_2$ .

By the symmetric property of equalities,

$y_2 = m(x_2 - x_1) + y_1$

6 0

3 years ago

What percent of 438 is 106? Let p= the percent.

vesna_86 [32]

Let's create a simple proportion.

p = Percent

p/100 = 106/438

Now, cross multiply.

438p = 10,600

Divide both sides by 438 to isolate p.

p ≈ 24.200913242

Therefore, 106 is approximately 24.201 percent of 438.

5 0

3 years ago

Please help

Nikitich [7]

10q-3r=14, 10q=3r-14 10q=3r/10+14/10

q=3/10r+7/5

5 0

3 years ago

If 6 pounds of grapes costs $1.89, how much would 15 pounds of grapes cost?

Alja [10]

So divide 1.89 by 6 to see how much would one pound of grape be
1.89/6=0.315
Then multiply 0.315 (price for one pound of grape ) by 15
0.315*15 =4.725 $for 15 pounds of grape

8 0

3 years ago

(05.02)

Amiraneli [1.4K]

Answer:

y = x + 1

Step-by-step explanation:

1) First, find the slope of the line between the two points. Whichever option has the same slope would be the right answer. To find this, use the slope formula $\frac{y_2-y_1}{x_2-x_1}$ . $x_1$ and $y_1$ represent the x and y values of one point, and $x_2$ and $y_2$ represent the x and y values of another point.

So, use the points given to answer the question. Substitute 4 for $x_1$ , 5 for $y_1$ , 8 for $x_2$ , and 9 for $y_2$ then solve:

$\frac{(9)-(5)}{(8)-(4)} \\= \frac{9-5}{8-4} \\= \frac{4}{4} \\= 1$

Therefore, the slope is 1.

2) Any line that is in a "y = a number" format is a horizontal line, and all horizontal lines have a slope of 0 - so the second option can't be the answer.

The rest of the options are in slope-intercept form, or y = mx + b format. Remember that the coefficient of the term with the x is the slope. Knowing this, y = x + 1 would need to be the answer since the coefficient of the term with the x is 1, and we already calculated that the slope is 1.

4 0

3 years ago