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Eduardwww [97]
3 years ago
15

What is the y-intercept of the graph of the function f(x)=x^2+3x+5?

Mathematics
2 answers:
marta [7]3 years ago
8 0

Answer:

y int = (0,5)

Step-by-step explanation:

hope this helps

Dima020 [189]3 years ago
5 0
Y=(0,5)

So it is the last one choose that
And that is the correct answer
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Evaluate 9/m +4when m=3​
valina [46]

Answer:

7

Step-by-step explanation:

Put the m value where m is

9/3+4

9/3 simplified is 3

3+4=7

4 0
3 years ago
Read 2 more answers
3.5b + 6.8k - 5.2b<br> - 2.3k
SVEN [57.7K]

Answer:

− 1.7b + 4.5k is the simplified equation. Is that the answer you were looking for?

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Can someone plz help me idk how to do it
pshichka [43]
At first glance the answer seems like 3
u should draw it out
6 0
2 years ago
A radio manufacturer believes that the length of life of WPPX model radio is normal with µ=12 years and σ=2.5 years. (a) What pe
kicyunya [14]

Answer:

(a) 5.48%

(b) 17.82 years

(c) 21.19%

(d) 15.21 years

Step-by-step explanation:

z = (x-μ)/σ,

where

x is the raw score

μ is the population mean

σ is the population standard deviation.

µ=12 years and σ=2.5 years.

(a) What percent of the radios will function for more than 16 years?

For x = 16

z = 16 - 12/2.5

z = 1.6

Probability value from Z-Table:

P(x<16) = 0.9452

P(x>16) = 1 - P(x<16)

1 - 0.9452

= 0.054799

Converting to percentage = 0.054799 × 100

= 5.4799%

Approximately = 5.48%

(b) Suppose the company decides to replace 1% of the radios. Find the length of the guarantee period. i.e. find X.

find the z score of the 99th percentile = 2.326

Hence:z = (x-μ)/σ

2.326 = x - 12/2.5

Cross Multiply

2.326 × 2.5 = x - 12

5.815 = x - 12

x = 12 + 5.815

x = 17.815

Approximately = 17.82 years

(c) What percent of the radios that will fail to satisfy the guarantee period of 10 years? , i.e. less than 10 years?

When x < 10

Hence,

z = 10 - 12/2.5

z = -0.8

Probability value from Z-Table:

P(x<10) = 0.21186

Converting to percentage

0.21186 × 100

= 21.186%

Approximately = 21.19%

(d) If 10% of the radios will function for more than X years, find X.

The z score would be : 100 - 10%

= 90th percentile z score

We find the z score of the 90th percentile = 1.282

Hence:z = (x-μ)/σ

1.282 = x - 12/2.5

Cross Multiply

1.282 × 2.5 = x - 12

3.205 = x - 12

x = 12 + 3.205

x = 15.205

Approximately = 15.21 years

4 0
3 years ago
Explain why 1/2 is not equivalent to 2/5.
juin [17]
Find ing the common denominator would make it 10.
for 1/2 to get to 10 you have to multiply by 5
1/2x5= 5/10
then you have to convert 2/5 to get the denominator to be 10
so you multiply 2/5 by 2
2/5x2= 4/10
5/10 is greater than 4/10
7 0
2 years ago
Read 2 more answers
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