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3 years ago

Solve x^2+6=7 by completing the square. Which is the solution set of the equation

Mathematics

2 answers:

ValentinkaMS [17]3 years ago

7 0

Answer:

{-7,1}

Step-by-step explanation:

AlladinOne [14]3 years ago

4 0

Answer:

the first answer {-7,1} is right.

Step-by-step explanation:

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Find the straight time pay $7.60 per hour x 40 hours

gayaneshka [121]

Answer:

The straight time pay for $ 7.60 per hour and 40 work hours per week is $ 304.

Step-by-step explanation:

Let suppose that worker is suppose to work 8 hours per day, so that he must work 5 days weekly. The straight time is the suppose work time in a week, the pay is obtained after multiplying the hourly rate by the amount of hours per week. That is:

$C = \left(\$\,7,60/hour\right)\cdot (40\,hours)$

$C = \$\,304$

The straight time pay for $ 7.60 per hour and 40 work hours per week is $ 304.

5 0

3 years ago

P= $16,000, r= 10%, t= 180 days<br> Assume 360 days in a year.

labwork [276]

Interest = (principal)(rate as a decimal)(time in years)

I = (16,000)(0.1)(0.5)
I = $800

3 0

3 years ago

Read 2 more answers

ms. Omar runs the school tennis club. She has a bin of tennis balls and rackets. For every 5 tennis balls in the bin, there are

anygoal [31]

Answer:

see the explanation

Step-by-step explanation:

Let

x ----> number of tennis balls

y ----> number of tennis rackets

we know that

To find out the ratio of tennis balls to tennis rackets, divide the number of tennis ball by the number of tennis rackets

In this problem we have

$\frac{x}{y}=\frac{5}{3}$

see the model in the attached figure N 1

$y=\frac{3}{5}x$

$y=0.60x$

This is the equation of a linear direct variation

The relationship between the variables x and y is proportional

see the model in the attached figure N 2

4 0

3 years ago

Subtract 7x^2−5xy+8y^2 from −2x^2−15xy+9y^2

Ghella [55]

Answer:

$y^2-10xy-9x^2$

Step-by-step explanation:

We want to subtract $7x^2 -5xy+8y^2$ from $-2x^2-15xy+9y^2$ .

We set up the subtraction problem as follows:

$(-2x^2-15xy+9y^2)-(7x^2-5xy+8y^2)$ .

We expand the brackets to obtain;

$=-2x^2-15xy+9y^2-7x^2+5xy-8y^2$ .

We regroup the terms to obtain;

$=9y^2-8y^2-15xy+5xy-2x^2-7x^2$ .

We now simplify to obtain;

$=y^2-10xy-9x^2$ .

4 0

3 years ago

Ethan's full backpack weighed too much. He took out a 4/8 pound electronic reader, a 2 ⅛ pound full bottle of water, and a ⅞ pou

Luba_88 [7]

Answer:

see below

Step-by-step explanation:

We can just add up all of these fractions:

2 1/8 + 7/8 = 2 8/8 = 3

8 5/8 + 4/8 = 8 9/8 = 9 1/8

3 + 9 1/8 = $12\frac{1}{8}$

4 0

3 years ago