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2 years ago

A 20-pound bag of fertilizer costs $19.60. What is the cost per pound?

Mathematics

1 answer:

Sladkaya [172]2 years ago

3 0

Answer:

just do 19.60/20 = 0.98$/lbs

hope that answers your question

Step-by-step explanation:

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Write a linear function f with f(−10)=4 and f(−2)=4.

Orlov [11]

f(-10) = 4

f(-2) = 4

Since y is constant while x isnt we just dont need to put x

f(x) = 4

6 0

3 years ago

Use: Ck = k! (n-k)!

Arlecino [84]

Answer:

3 ways.

Step-by-step explanation:

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

2 meats from a set of 3(steak, fish or chicken). So

$C_{3,2} = \frac{3!}{2!1!} = 3$

3 ways.

5 0

2 years ago

3/4 divided by 1/3 plz I need it

Annette [7]

Answer:

0.25

Step-by-step explanation:

7 0

2 years ago

What is the equation of the quadratic graph with a focus of (8, −8) and a directrix of y = −6?

sp2606 [1]

Answer:

$y=-\frac{223}{28}(x-8)^2-7$

Step-by-step explanation:

we are given a quadratic equation

we know that quadratic equation is same as equation of parabola

so, we can use formula

$y=a(x-h)^2+k$

Focus is

$(h,k+\frac{1}{4a} )$

now, we can compare it with given focus

=(8,-8)

we get

$h=8$

$k+\frac{1}{4a}=-8$

Directrix is

$y=k-\frac{1}{4a}$

we are given directrix =-6

$k-\frac{1}{4a}=-6$

we got two equations as

$k+\frac{1}{4a}=-8$

$k-\frac{1}{4a}=-6$

now, we can add both equations

and we get

$k+\frac{1}{4a}+k-\frac{1}{4a}=-8-6$

$2k=-8-6$

$2k=-14$

$k=-7$

now, we can find 'a'

$k+\frac{1}{4\times -7}=-8$

$k=-\frac{223}{28}$

now, we can plug back all values

and we get

So, equation of parabola is

$y=-\frac{223}{28}(x-8)^2-7$

3 0

2 years ago

PLEASE HELP I'M BEGGING YOU SHOW STEPS IF YOU CAN

rusak2 [61]

You need to simplify according to distribute law

a(b+c)=ab+bc

$\\ \rm\longmapsto -2x^3(4x^3-5x^6)$

$\\ \rm\longmapsto -8x^{3+3}-10x^{6+3}$

$\\ \rm\longmapsto -8x^6-10x^9$

Highest degree=9

We need the graph (attached)

Zeros are the x intercepts

they are -7 and -1

6 0

1 year ago

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