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CaHeK987 [17]
3 years ago
15

What is the exponential regression equation for the data set?

Mathematics
2 answers:
Inessa05 [86]3 years ago
4 0
Y^=323.905•0.875x because it is the correct answer
Vilka [71]3 years ago
3 0

Answer:

y=323.905 \cdot 0.875^x

Step-by-step explanation:

Given :

x                    y

14                   45

16                   45

18                   33

20                   26

20                   16

25                   14

26                   9

Solution:

General form of equation : y=AB^x

Using the exponential regression calculator we get the output

A = 323.905

B = 0.875469

Substituting the values in the general form

y=323.905 \cdot 0.875^x

Hence Option C is correct.

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if n represent number than write an expression for three times the difference of the number amd six increased by four times the
lorasvet [3.4K]

Let n be the number. The difference of the number and six is n-6. Then three times the difference of the number and six is 3·(n-6). This number 3·(n-6) increased by four times the number n, then

3·(n-6)=4·n.

Solve it:

3·n-3·6=4n,

3n-4n=18,

-n=18,

n=-18.

Answer: n=-18 and expression is 3·(n-6)=4·n.

6 0
3 years ago
Layala and Zahra have 2700 marbles in the ratio of 2:7. How many marbles Zahra must have gave away so that they both would have
Zolol [24]

Answer:

1500

Step-by-step explanation:

Given that :

Total number of marbles held by Layala and Zahra = 2700

Ratio = 2 : 7

Layala's share of marbles : (2 / (2+7)) * 2700

= 2/9 * 2700

= 600

Zahra's share of marble : (7 / (2+ 7)) * 2700

= 7 / 9 * 2700

= 2100

Hence, Zahra must have given away (2100 - x) = 600

2100 - 600

= 1500 marbles, so that both Zahra and Layala have the same number of marbles

5 0
3 years ago
11m-8-6m=22<br> What are the terms??
larisa86 [58]
11m-6m = 22+8
5m = 30
m = 6

Hope I helped :)
4 0
4 years ago
What is the sum (2/5 x +5/8)+(1/5 x - 1/4)?
Artyom0805 [142]

\left(\dfrac{2}{5}x+\dfrac{5}{8}\right)+\left(\dfrac{1}{5}x-\dfrac{1}{4}\right)=\left(\dfrac{2}{5}x+\dfrac{1}{5}x\right)+\left(\dfrac{5}{8}-\dfrac{1}{4}\right)\\\\=\dfrac{2+1}{5}x+\left(\dfrac{5}{8}-\dfrac{1\cdot2}{4\cdot2}\right)=\dfrac{3}{5}x+\left(\dfrac{5}{8}-\dfrac{2}{8}\right)\\\\=\dfrac{3}{5}x+\dfrac{5-2}{8}=\boxed{\dfrac{3}{5}x+\dfrac{3}{8}}

3 0
3 years ago
Diane is starting a business selling handmade necklaces. She has decided to invest an initial
jeka94
Any statement as answers choice?
5 0
3 years ago
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