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3 years ago

A toaster oven costing $130 offers an extended warranty for 25% of the purchase price.

Mathematics

1 answer:

tester [92]3 years ago

3 0

I assume you want the total cost of the toaster and the warranty the total is $162.50

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Which equation involves a prime quadratic and cannot be solved by factoring?

brilliants [131]

B. x^2 + 5x - 4 = 0

Anyway that you try to factor it will not work

~~hope this helps~~

6 0

3 years ago

Four times a number added to 3 times a larger number is 31. Seven subtracted from the larger number is equal to twice the smalle

Rus_ich [418]

Answer:

y = negative four-thirds x + StartFraction 31 Over 3 EndFraction

y = 2 x + 7

Step-by-step explanation:

Let x represent the smaller number and y represent the larger number.

Four times a number added to 3 times a larger number is 31.

<u>It is translated as:</u>

4x + 3y = 31

<u>Then, solving for y:</u>

4x + 3y=31 ⇒ 3y= -4x+31 ⇒ y= (-4x+31)/3 = - 4/3x + 31/3

⇒ y= - 4/3x + 31/3

<u>Correct answer choice for this equation:</u>

y = negative four-thirds x + StartFraction 31 Over 3 EndFraction

Seven subtracted from the larger number is equal to twice the smaller number.

<u>It is translated as:</u>

y-7= 2x

<u>Then, solving for y:</u>

y-7= 2x ⇒ y= 2x+ 7

<u>Correct answer choice for this equation:</u>

y = 2 x + 7

4 0

2 years ago

State whether each situation has independent or paired (dependent) samples. a. A researcher wants to compare the hand–eye coord

Alex73 [517]

Answer:

a. A researcher wants to compare the hand–eye coordination of men and women. She finds a random sample of 100 men and 100 women, and measures their hand–eye coordination = paired samples

b. A researcher wants to know whether professors with tenure have fewer office hours than professors without tenure. She observes the number of office hours for professors with and without tenure. = independent samples

Explanation:

Paired-samples t tests compare scores on two different variables but for the same group of cases; independent-samples t tests compare scores on the same variable but for two different groups of cases.

6 0

2 years ago

Point A is located at (2, 6), and point M is located at (−1, 8). If point M is the midpoint of segment AB, find the location of

Viefleur [7K]

ANSWER:

d. (−4, 10)

STEP-BY-STEP EXPLANATION:

The midpoint has the following definition:

$\left(x_m,y_m\right)=\left(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\right)$

We can calculate point B, using the following equations obtained taking into account the above:

$\begin{gathered} x_m=\frac{x_1+x_2}{2} \\ \\ -1=\frac{2+x_2}{2} \\ \\ x_2+2=-2 \\ \\ x_2=-2-2=-4 \\ \\ \\ y_m=\frac{y_1+y_2}{2} \\ \\ 8=\frac{6+y_2}{2} \\ \\ y_2+6=16 \\ \\ y_2=16-6=10 \\ \\ \text{ Therefore, point B is located at \lparen-4, 10\rparen} \end{gathered}$

The correct answer is: d. (−4, 10)

8 0

1 year ago

Find the equation of the line through the points (9,−2) and (1,6).

devlian [24]

Answer: y=-x+7

Step-by-step explanation:

Answer:

Your given points: (9,-2)and (1,6)

x1=9

y1=-2

x2=1

y2=6

Step-by-step explanation:

To find slope take the points you got from graph and put it into the equation y2-y1/x2-x1

6-(-2)/1-9=6+2/1-9=8/-8=-1

SLOPE IS m=-1

Then take that slope u got and plug into this equation to find equation of the line

y-y1=m(x-x1)

y-(-2)=-1(x-9)

y+2=-x+9

-2. -2

——————

y=-x+7 ANSWER CHECK

8 0

2 years ago