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2 years ago

What value of x will make this expression equal to 28.1?

Mathematics

1 answer:

Rudiy272 years ago

5 0

The answer is x=0 I believe because it is the only logical area

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Which expression is equivalent to 3 cube root (343x^9 y^12 z^6) ? 7x3y4z2 7x3y6z2 49x3y6z2 49x3y4z2

Andre45 [30]

Cube root of 343 = 7

of x^9 it is x^3 ( because x^9 = x^3 * x^3 * x^3)

of y^12 it is y^4

of z^6 it is z^2

So the correct choice is A

7 0

2 years ago

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A wedding website states that the average cost of a wedding is $25,809. One concerned bride hopes that the average is less than

lapo4ka [179]

Answer:

Null hypothesis H₀ : μ = 25,809

Alternative hypothesis H₁ : μ < 25,809

2) Test Statistic = -1.44

3) Conclusion:

The result is significant, there is sufficient evidence to support the bride’s hope at the 0.10 level of significance.

Step-by-step explanation:

Given the data in the question;

Sample mean x" = 24,638

sample size n = 46

standard deviation σ = 5531

level of significance ∝ = 0.10

NULL and ALTERNATIVE HYPOTHESIS

Null hypothesis H₀ : μ = 25,809

Alternative hypothesis H₁ : μ < 25,809

TEST STATISTICS

Z = (x"-μ) / σ√n

we substitute

Z = (24,638 - 25,809) / (5531/√46)

Z = -1171 / 815.5

Z = -1.44

Test Statistic = -1.44

Now, from normal z-table;

P-value = P( Z < -1.44 ) = 0.0749

P-value = 0.0749

Since P-value ( 0.0749 ) is less than level of significance ( 0.10 ), we reject H₀.

Conclusion:

The result is significant, there is sufficient evidence to support the bride’s hope at the 0.10 level of significance.

6 0

2 years ago

Given f(x) and g(x) = f(x) + k, look at the graph below and determine the value of k. k = ______ Graph of two lines. f of x equa

Nat2105 [25]

Solution:

As given , g(x)= f(x) + k --------(1)

As also given : f(x) = $\frac{1}{3}$ (x+2)

g(x) = $\frac{1}{3}$ (x+5)

Putting the value of f(x) and g(x) in equation (1).

→ $\frac{1}{3}$ (x+5) = $\frac{1}{3}$ (x+2) + k

→ $\frac{1}{3}[x+5-x-2]$ = k

→ k = $\frac{1}{3} \times 3=1$

So , the value of k is 1.

7 0

2 years ago

Sally's Stuffed Animal Company charges $0.75 per pound to ship stuffed animals. Part A: Write an equation to determine the total

zalisa [80]

Hope this helps but I think it might be:
Part A: c=0.75p
the cost of shipping for 2 pounds
c=0.75p
c=0.75*2
c=$1.50
Part B: c=0.05p

6 0

2 years ago

Curtis paid $80 on the vet bill for his dog. Then the vet charged him $40 more for his dog's medicine. If he now owes the vet $1

Klio2033 [76]

Answer:

He paid 80 at the start, so his starting must have been 80

Step-by-step explanation:

80+40=120...

so either 0, or 80 because he owed nothing, or he owed the 80, then the 40 for medication

I hope this helps!

8 0

2 years ago

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