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Tpy6a [65]
3 years ago
7

How can you solve y=-2x+20 by substitution?

Mathematics
1 answer:
levacccp [35]3 years ago
8 0

Answer:

subtract from both sides and then multiplying both sides

Step-by-step explanation:

how can you solve y = -2x + 25 by subtraction

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Readme [11.4K]

Answer:

i think that it would be A.3 is 0.03 times 3 or C.3 is 0.03 times 100

Step-by-step explanation:

8 0
3 years ago
Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 10 Allen's hummingb
ruslelena [56]

Answer: provided in the explanation segment

Step-by-step explanation:

(a). from the question, we can see that since that б is known, we can use standard normal, z.

we are asked to find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error?

⇒ 80% confidence interval for the average weight of Allen's hummingbirds is given thus;

x ± z * б / √m

which is

3.15 ± 1.28 * 0.32/√10

= 3.15 ± 0.1295 = 3.0205 or 3.2795

(b). normal distribution of weight (c) б is known

(c). option (a) and (e) are correct

(d).  from the question, let sample size be given as S

this gives';

1.28 * 0.32/√S = 0.15

√S = (1.28 * 0.32) / 0.15 = 2.73

S = 7.4529

cheers i hope this helps

6 0
3 years ago
A) 3 in<br> b) 4 in <br> c) 5 in <br> d) 6 in <br><br><br> PLEASE HELP
Andrei [34K]

Answer:

I would say A

Step-by-step explanation:

8 0
3 years ago
Let F(x)= 5x-4 And G(x)=x+7 Find f(g(x))
irina [24]

Answer:

5x+31

Step-by-step explanation:

f(g(x))

5(x+7) -4

5x+35-4

5x+31=f(g(x))

6 0
2 years ago
An experiment consisting of 35 mice is set up to study the weight of mice after injecting them with a drug. If the population me
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See the attachment Hope it helps :-)

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