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nika2105 [10]
3 years ago
10

Latasha is a waitress at Seventh Heaven Hamburgers. She wants to estimate the mean amount each group at a table leaves for a tip

. A random sample of 42 tables had a mean of = $7.30. Based on long term experience, s ≈ $2.92. Find a 90% confidence interval for the average amount left by all groups..

Mathematics
1 answer:
elena55 [62]3 years ago
3 0
Forgive me if this is wrong. I haven't done stat in a year, but comment if you need clarification!

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Can you help me on this one
Annette [7]

Answer: B. Line AC is congruent to line BD

Step-by-step explanation:

The Hypotenuse-Leg Theorem states that two right triangles are congruent if and only if the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of the other right triangle.

Since they both share Leg DC, their hypotenuse should be congruent to use this proof.

3 0
3 years ago
A number added to 12 and then subtracted by 18 equals 26. What is the number
tiny-mole [99]
The answer would be 32. take your 26 and add 18 then subtract 12. then rework it forward if you don't understand.
4 0
3 years ago
Read 2 more answers
The complement of an angle is three times the measurement of the angle. Find the measurement of the larger angle.
olganol [36]
We know that two complements add up to 90.
Let's call the smaller angle x and the larger y.
3x = y
x + y = 90
We can use simple substitution.
x + 3x = 90
4x = 90
x = 22.5

Then, since we know that 3x=y, we can find the larger angle.
3*22.5 = 67.5
4 0
3 years ago
What are axioms in algebra called in geometry?<br> What are axioms in algebra called in geometry
umka21 [38]

Answer:

Axioms are generally statements made about real numbers. ... Sometimes they are called algebraic postulates. Often what they say about real numbers holds true for geometric figures, and since real numbers are an important part of geometry when it comes to measuring figures, axioms are very useful

5 0
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Alex says that the function f(x) = (3x)2 represents a vertical stretch of the quadratic parent function by a factor of 3. Marta
gavmur [86]

Our parent function is f(x)=x^2. A vertical stretch by a factor of k means that every point (x,f(x)), has been transformed into (x,kf(x)). Alex is clearly incorrect as our parent function has been transformed to (x,9f(x)), not (x,3f(x)). A horizontal stretch(or compression) by a factor of k means our function has been transformed to (x/k,f(x)). Here, Marta is saying our function should look like (3x,f(x)). This can also be achieved by plugging 3x into the parent function, which would give us f(3x)=(3x)^2, so it seems that Marta is the correct one.

6 0
3 years ago
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