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adelina 88 [10]
3 years ago
10

Ivanna received a $70 gift card for a coffee store. She used it in buying some coffee that cost $7.31 per pound. After buying th

e coffee, she had $26.14 left on her card. How many pounds of coffee did she buy?
Mathematics
1 answer:
zzz [600]3 years ago
3 0

the first time in my class or must i forget abt u cos i always indoors and i know ukuthi im not strong so

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A liquid solution is slowly leaking from a container. The graph shows the milliliters of solution, y, remaining in the container
Burka [1]

Answer:

90 minutes

Step-by-step explanation:

See attachment for graph.

First, we need to determine the slope.

When y = 900, x = 0

When y = 600, x = 30

The slope is then calculated as:

m = (y2 - y1)/(x2 - x1)

m = (600 - 900)/(30 - 0)

m = -300/30

m = -10

Next, we determine the equation of the line using

y - y1 = m(x - x1)

So, we have:

y - 900 = -10(x - 0)

y - 900 = -10x

y = 900 - 10x

When the container is empty, y = 0.

So, we have:

0 = 900 - 10x

Collect Like Terms

10x = 900

Solve for x

x = 900/10

x = 90

3 0
3 years ago
Need help with 2 and 3 and express I’m radical form
kondaur [170]
This is just simple Pythagorean’s theorem. a^2 + b^2 = c^2

Number 2:
5^2 + x^2 = 10^2
25 + x^2 = 100
x^2 = 75
x = sqrt 75 = 5*sqrt(3)

Number 3:
4^2 + x^2 = 7^2
16 + x^2 = 49
x^2 = 33
x = sqrt 33
4 0
3 years ago
What is the domain of the function on the graph?
Sergeu [11.5K]
I think it’s x>=-3
That means greater than or equal to btw :)
6 0
3 years ago
Read 2 more answers
Estimate the product 8.91 × 34,871.081
aleksklad [387]
The way I would do it is by rounding 8.91 up to 9 and I would round 34,871.081 up to 35,000.
9*35,000=315,000

Hopefully I was able to help in some way.
3 0
3 years ago
In the diagram, the radius of the outer circle is 2x cm and
hodyreva [135]

Area shaded = Area big circle- Area of small circle;

200 pi= pi•(2x)^2 -pi•6^2;

200pi= pi•4x^2 -pi•36;

200pi=pi•4(x^2 -9) divide both sides by 4pi;

50=x^2 -9; So x=sqrt(59)~7.68cm

8 0
3 years ago
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