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sergiy2304 [10]
3 years ago
7

Let h represent marks height in inches

Mathematics
1 answer:
frutty [35]3 years ago
3 0

if his height is H, and she is 7 inches shorter than him, her height can be represented by the algebraic equation H-7

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Joseph wants a television for his
kati45 [8]

Answer:

133.2

Step-by-step explanation:

First take off the 40%

740 - (40/100)*740

740 - 0.4 * 740

740 - 296

444

=========================

That answer of 444 is the new selling price.

Now you take 30% of 444

30% of 444

30/100 * 444

0.3 * 444

133.2

Joseph will have to pay 133.2 dollars for the TV he want.

===========================

One Step

===========================

You could do this problem all in one step

30% (740*60% )

0.3 ( 740*0.6)

0.3(444)

133.2

=================

Both methods give the same answer.

8 0
3 years ago
Read 2 more answers
Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE
EleoNora [17]

Answer:

0, 10

Step-by-step explanation:

The given function is:

g(y) = \frac{y-5}{y^2-3y+15}

According to the quotient rule:

d(\frac{f(y)}{h(y)})  = \frac{f(y)*h'(y)-h(y)*f'(y)}{h^2(y)}

Applying the quotient rule:

g(y) = \frac{y-5}{y^2-3y+15}\\g'(y)=\frac{(y-5)*(2y-3)-(y^2-3y+15)*(1)}{(y^2-3y+15)^2}

The values for which g'(y) are zero are the critical points:

g'(y)=0=\frac{(y-5)*(2y-3)-(y^2-3y+15)*(1)}{(y^2-3y+15)^2}\\(y-5)*(2y-3)-(y^2-3y+15)=0\\2y^2-3y-10y+15-y^2+3y-15\\y^2-10y=0\\y=\frac{10\pm \sqrt 100}{2}\\y_1=\frac{10-10}{2}= 0\\y_2=\frac{10+10}{2}=10

The critical values are y = 0 and y = 10.

5 0
3 years ago
Is 3xy + 8 = 4y a linear equation ?
WITCHER [35]

Answer:

No because of the 3xy term. For an equation to be considered linear there has to be one y value for every x value given

3 0
3 years ago
Read 2 more answers
The variables y and x have a proportional relationship, and y = 9 when x = 2.
Aloiza [94]

Answer: y=13.5


Step-by-step explanation:

1. By definition, if y=9 when x=2, then:

\frac{y}{x}=\frac{9}{2}

2. Keeping this on mind, to find the value of y when x=3, you must apply the following proccedure:

\frac{y}{3}=\frac{9}{2}

3. Now, you must solve for y, as following:

y=3(\frac{9}{2})\\y=\frac{27}{2}\\y=13.5

4. Then, the result is:

y=13.5


4 0
4 years ago
1 pen: $0.75. 1 highlighter: $0.40. 1 eraser: $0.25. The students pays with a $5 bill.
pashok25 [27]
Your change is $3.90
8 0
4 years ago
Read 2 more answers
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