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3 years ago

You can buy a 20 pound bag of dog food for Doo. What is the cost per pound?

Mathematics

2 answers:

8090 [49]3 years ago

8 0

Answer:

$12

Step-by-step explanation:

Diano4ka-milaya [45]3 years ago

3 0

Answer:

12$

Step-by-step explanation:

this is a helper

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How do I solve this problem?

Brrunno [24]

A. x=the cost of one lunch. 60.25=5x+3(x-5.25)

b. 60.25=5x+3x-15.75 60.25+15.75=8x-15.75+15.75

76=8x 76/8=8x/8 9.50=x

A lunch is $9.50. If you are not sure, check my answers. Hope this helped.

8 0

3 years ago

If f(x)=2x^2+(1000/x), find the average rate of change of f(x) from x=a to x=a+h.

galina1969 [7]

Answer:

$\frac{\frac{1000}{x+h}-\frac{1000}{x}}{h}$ is your average rate of change,

Step-by-step explanation:

average rate of change is

$\frac{f(a+h)-f(a)}{a+h-a}$ , by slope formula

simplify this to get $\frac{f(a+h)-f(a)}{h}$ , which is the definition of the derivative as h goes to 0

$\lim_{h \to 0} \frac{f(a+h)-f(a)}{h}$

since you defined x=a, we can substitute a for x and vice versa to find our derivative.

$\lim_{h \to 0} \frac{(2x^2+\frac{1000}{x+h})-(2x^2+\frac{1000}{x})}{h}$

simplifying

$\lim_{h \to 0} \frac{\frac{1000}{x+h}-\frac{1000}{x}}{h}$ (your average rate of change)

6 0

2 years ago

-k+3k combined like terms to create an equivalent expression

Murrr4er [49]

Answer:

Step-by-step explanation:

Add:

-k + 3k

-1k + 3k

(You have to add -1 + 3)

Hope this helps :)

5 0

3 years ago

Read 2 more answers

In parallelogram WXYZ, what is CY? 11 ft 15 ft 21 ft 23 ft

erastovalidia [21]

Answer:

15 ft

Step-by-step explanation:

In a parallelogram the diagonals bisects each other

So WC= CY

$x+4=2x-7$ solve the equation for x

Subtract x from both sides

$x-x+4=2x-x-7$

$4=x-7$

Now we add 7 on both sides

$4+7=x-7+7$

x=11

Now we need to find CY

$CY= 2x-7$

Plug in 11 for x

$CY= 2(11)-7=22-7= 15$

6 0

3 years ago

Read 2 more answers

Cual es el valor de verdad de: El rio magdalena es el rio más largo de colombia

allsm [11]

Yes, it is the longest river

5 0

2 years ago