Your equation would be y= 6/7x+5
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Since the standard deviation for the population is known, the z-distribution is used.
<h3>When to use the t-distribution and the z-distribution?</h3>
- If the population standard deviation is known, the z-distribution is used.
- If the population standard deviation is not known, only the sample standard deviation, the t-distribution is used.
In this problem, the <u>standard deviation for the population is known</u>, hence the z-distribution is used.
More can be learned about which distribution to use, the t-distribution or the z-distribution, at brainly.com/question/15869521
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A=b+1
a=2b+9
b+1=2b+9
-b from both sides
1=b+9
-9 from both sides
-8=b
b+1
-8+1
-7
You can check your answer...
2b+9
2(-8)+9
-16+9
-7
The smaller is -8 and the larger is -7
Answer:
what
Step-by-step explanation:
Answer:
p = 0, p = 12
Step-by-step explanation:
Given a quadratic equation in standard form
ax² + bx + c = 0 then the nature of its roots is given by the discriminant
Δ = b² - 4ac
For equal roots b² - 4ac = 0
Given
x² -(p - 2)x + 2p + 1 = 0 ← in standard form
with a = 1, b = - (p - 2), c = 2p + 1, then
[- (p - 2)]² - (4 × 1 × 2p + 1) = 0
(p - 2)² - 4(2p + 1) = 0
p² - 4p + 4 - 8p - 4 = 0
p² - 12p = 0 ← factor out p from each term
p(p - 12) = 0
Equate each factor to zero and solve for x
p = 0
p - 12 = 0 ⇒ p = 12