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AlekseyPX
3 years ago
5

In certain chemical,the ratio of zinc to copper is 3 to 17 A jar of the chemical contains 493 grams of copper

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0
I’m so gonna I was walking to work today because my sister is in a good mood
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Mike forgot to replace the cap on a bottle of room freshener. The room freshener began to evaporate at the rate of 15% per day.
riadik2000 [5.3K]
Percentages are out of 100. So we'll multiply by 0.85 to represent the 15%

To find the y points on the graph we can use f(x) = 0.85^x*40

We'll input 1-5 for x to find y:

1:  0.85^1=0.85*40=34
2: 0.85^2=0.7225*40=28.9
3: 0.85^3=0.614125*40=24.57
4: 0.85^4= 0.52200625*40=20.88
5: 0.85^5=0.443705312*40=17.75

Therefore the answer is a graph of exponential function going down from left to right in quadrant 1 through the point 0, 40 and approaching the x-axis.
8 0
3 years ago
Sammi bought an Ipod for $65. Tax was 7.5%. What was her total after tax?
marishachu [46]

Answer:

$69.90

Step-by-step explanation:

I multiplied $65 with 0.075 (Tax percentage). I got 4.875. I rounded that up to 4.9 (Tax). Then, I added the tax with the original price ($65) and I get $69.90

4 0
3 years ago
The original cost of Sam’s investment is $10,000. After liquidating the investment, Sam calculated his real return to be $10,700
Sati [7]

Answer:

7%

Step-by-step explanation:

Step one:

given data

The original cost of Sam’s investment is $10,000

Sam calculated his real return to be $10,700

Required:

the interest made from the investment is

10700-10000= $700

Step two:

The ROI is a percentage that tells us the interest made

interest/investment*100

=700/10000*100

=0.07*100

= 7%

The ROI is 7%

7 0
3 years ago
Which rule describes the composition of transformations that maps ΔJKL to ΔJ"K"L"?
Vera_Pavlovna [14]

The  rule that describes the composition of transformations that maps ΔJKL to ΔJ"K"L" is Rotation  0° to  90°  and reflection about the x-axis.

<h3>What is the transformations rule that was used here?</h3>

A transformation is a rule that is used to manipulate the position of a point of geometric figure.

Analyzing the figure, rotation of ΔJKL through the angle 90 degrees in a counter-clockwise direction gives us  ΔJ'K'L' .

ΔJ"K"L" is been gotten also using ΔJ'K'L'  through the refraction of ΔJ'K'L' across the x-axis.

In this case,   rule that describes the composition of transformations that maps ΔJKL to ΔJ"K"L" is Rotation  0° to  90°  and reflection about the x-axis.

Learn more about Transformation from

brainly.com/question/4218767

#SPJ1

6 0
2 years ago
6s—12 what is the answer
Ket [755]
If it is not equal , then 6(s-2)
8 0
3 years ago
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