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2 months ago

Explain the error in the work shown. Find the

2 answers:

3 0

To reach the solution of the equation correctly, the process is as follows: We have: ⇒ ⇒ ⇒ On equating the powers for the same base, it results in -6 = 8a, which implies an error in the premise of equating terms when their bases were not identical.

PIT_PIT [12.4K]2 months ago

3 0

The exponents were incorrectly set equal because the bases did not match. 16 should have been represented as 4 squared, and the exponent on the right needed to be 4a instead of 8a. Consequently, the correct solution is a = -3/4.

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Isaac is purchasing two pairs of shoes—one pair for $37.00 and the second pair for $42.00. The state sales tax applied to Isaac’

tester [12383]

Respuesta:

El total de la factura de Isaac es $84.53

Explicación detallada:

$37.00 + $42.00 = $79.00 < b (factura)

b + t (impuesto sobre ventas) = c (costo total)

(7%/100 = 0.07)

(0.07 * 79 = 5.53)

(t = $5.53)

$79.00 + $5.53 = $84.53

¡Buena suerte!

6 0

3 months ago

Read 2 more answers

Including Jose, there are eight people in his family.

lawyer [12517]

Answer:

840

Step-by-step explanation:

As the arrangement matters, we apply the permutations formula to find the solution.

Permutations formula:

The count of possible arrangements of x items chosen from a total of n items is defined by this formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

For this problem:

Jose occupies the first seat.

The other four can be arranged among the remaining 7 family members. Thus

$P_{(7,4)} = \frac{7!}{(7-4)!} = 840$

Hence, the final answer is:

840

7 0

3 months ago

Read 2 more answers

A statistics professor at a large university hypothesizes that students who take statistics in the morning typically do better t

Svet_ta [12734]

Answer:

The resulting value is 2.381

Step-by-step explanation:

Using the information presented in the question, we will calculate the evidence supporting the professor's hypothesis

Given that:

x₁ = 74,

n₁ = 36

s₁ = 8

x₂ = 68

n₂ = 36

s₂ = 10

The hypotheses can be outlined as:

The critical value is t₃₆+₃₆-₂,₀.₀₁ = t₇₀,₀.₀₁

thus,

t₃₆+₃₆-₂,₀.₀₁ = t₇₀,₀.₀ = 2.381

This implies a range of -2.381 to 2.381

Thus, we can support the professor's assertion.

5 0

2 months ago

A middle school took all of its 6th grade students on a field trip to see a ballet at a theater that has 1300 seats. The student

Leona [12618]

77%

I prefer using ratios and cross multiplication for scenarios like this. Divide the part (1001) by the whole (1300), and set that equal to x percent of 100 percent.

1001/1300 = x/100
100100 = 1300x
x = 77

3 0

2 months ago

The random variable X, representing the number of cherries in a cherry puff, has the following probability distribution:x: 4 - 5

Leona [12618]

Answer:

Step-by-step explanation:

The probability distribution for the random variable X is provided.

X 4 5 6 7 Total

P 0.2 0.4 0.3 0.1 1

x*p 0.8 2 1.8 0.7 5.3

x^2*p 3.2 10 10.8 4.9 28.9

a) The expected value E(X), representing the mean of X, equates to 5.3.

$Var(x) = 28.9-5.3^2=0.81$

Standard deviation is the square root of the variance, which amounts to 0.9.

------------------------------------

b) For the mean of the sample, we find:

Mean = 5.3

Variance = var(x)/n = $\frac{0.81}{{36} } \\=0.0225$

c) $P(\bar X$

3 0

2 months ago