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frozen [14]
2 years ago
13

To evaluate an expression with variables: 1. Substitute the values for the variables. 2. Identify grouping symbols, beginning wi

th 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?
Mathematics
2 answers:
Eduardwww [97]2 years ago
6 0

Evaluate the expression using x = –1 and y=3.

(6x^4y^3)

1. Substitute the values for the variables.

we plug in -1 for x  and 3 for y

(6x^4y^3)

(6(-1)^4(3)^3)

2. Identify grouping symbols, beginning with the innermost symbols.

(6*(-1)^4*(3)^3)

We take exponent and then we multiply

3. Determine and apply the rules of exponents to simplify

(6*(-1)^4*(3)^3)

(-1)^4 = -1 * -1 * -1 * -1 = 1

(3)^3 = 3*3*3= 27

(6*(1)*(27))

4. Evaluate.

(6*(1)*(27))

162

The value of the expression is 162

Ierofanga [76]2 years ago
5 0

Answer:

The answer is 162

Step-by-step explanation:

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Factor 3h2 – 11h - 42
Zina [86]
The answer is D
3*-42=-126
The factors of -126 that add to -11 are 7 and -18
replace -11h with 7h-18h
3h^2 + 7h - 18h - 42
Factor the first two terms and last two terms
h(3h+7) - 6(3h+7)
See how the two parentheses are the same?
THE ANSWER IS BELOW!!
(h-6)(3h+7)
the first parentheses has the terms that were outside, and the second has the original bracketed terms
This matches option D (it just multiplies the terms backwards, which gives the same result)
7 0
3 years ago
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The length of a rectangle is 2 meters less than 2 times the width. The perimeter is 20 meters. Find the width.
kakasveta [241]
The equation you'd make would be (2x-2)+(2x-2)+x+x=20 because the length is 2 m less than the width (x). To simplify, it'd be 6x-4=20 because you combine like terms. You then move the -4 over to the 20 to make it 6x=24. The final answer is 4 meters.
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3 years ago
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stepladder [879]
Sorry for bad hand writing

3 0
2 years ago
A radio station is giving away a $100 bill to every 30th caller and movie tickets to every 40th caller. Which call will be the f
Ymorist [56]

Answer:

120th caller

Step-by-step explanation:

According to the problem, calculation of the given data are as follows,

$100 bill = 30th caller

Movie tickets = 40th caller

So, to find out first to win both prizes, we will use LCM method,

LCM of 30 and 40 =       10 | 30 , 40

                                            | 3    , 4

LCM of 30 and 40 = 10 × 3 × 4 = 120

Hence, 120th caller will be the first to win both prizes.

3 0
3 years ago
With a short time remaining in the​ day, a delivery driver has time to make deliveries at 4 locations among the 7 locations rema
omeli [17]

Answer:

35 different routes

Step-by-step explanation:

The problem of how many different routes are possible if a driver wants to make deliveries at 4 locations among 7 locations is a combination problem.

Combination problems are usually selection problems, of all or part of a set of options, without considering the order in which options are selected.

The number of combinations of n objects taken r at a time is: ⁿCᵣ

So, the number of ways the driver can make deliveries at 4 locations out of 7 locations of given by

⁷C₄ = 35 different ways.

Hence, 35 different routes are possible to make deliveries at 4 locations out of 7 locations.

Hope this Helps!!!

3 0
3 years ago
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