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jeka94
2 years ago
10

Evaluate the expression, if x = 6, y = 8, and z = 4. 6x - y N

Mathematics
2 answers:
kupik [55]2 years ago
8 0

Answer:

it’s , 7

Step-by-step explanation:

To evaluate an expression with variables: 1. Substitute the values for the variables. 2. Identify grouping symbols, beginning with the innermost symbols. 3. Determine and apply the rules of exponents to simplify. 4. Evaluate. Evaluate the expression using x = –1 and y=3. (6x4y3) What is the value of the expression?

kari74 [83]2 years ago
7 0

Replace the letters with their given values:

6(6) - 8 / 4

Do the multiplication:

36-8 / 4

Subtract:

28/4

Divide to get the final answer :7

Answer = 7

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3 years ago
Experiments on learning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is
Sladkaya [172]

Answer:

Option A.

Step-by-step explanation:

In an experiment a mouse took the mean time to find its way through a maze = 18 seconds.

So the mean time μ = 18

So null hypothesis says,

H₀ : μ = 18

Then a researcher thought that the mice can complete the maze faster than the time taken earlier.

So he thinks mean time taken by 10 mice will be less than 18 seconds.

Or μ < 18

Alternate hypothesis says will be

Hₐ : μ < 18

Therefore, null hypothesis and alternate hypothesis will be

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Option A. will be the answer.

4 0
2 years ago
Which ratio would help find the distance the person is from the flag pole ¨X¨ if the angle is elevation of 30 degrees.
WINSTONCH [101]

Answer:

There are three major trignometric ratios in mathematics and they are:

sine(sin), cosine(cos) and tangent(tan). A popular acronym is used in recalling the formula for each ratio and it is: SOH-CAH-TOA.

Sine(x) = Opp/Hyp

Cosine(x) = Adj/Hyp

Tangent(x) = Opp/Adj

Now, the Hyp is the hypothenus of the triangle and it is the side opposite to angle 90. The opposite and adjacent is kind of relative depending on the angle been considered. For this case, we are considering angle 30 which the opposite side is 60 and the remaining side becomes the adjacent

Step-by-step explanation:

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5 0
2 years ago
If a randomizer picks seven letters from the alphabet (with repeats allowed), how many possible outcomes are there?
Virty [35]

Answer:

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Step-by-step explanation:

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Margaret and Bethany have a lemonade stand for one week each summer.
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Answer:

6.00

Step-by-step explanation:

5 0
2 years ago
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