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Damm [24]
3 years ago
10

Evaluate this expression if x = -4, y = 5, and z = -13. x - (-z)

Mathematics
2 answers:
LiRa [457]3 years ago
8 0

Answer:

-17

Step-by-step explanation:

x - (-z)

Subtracting a negative is like adding

x+z

x = -4 and z = -13

-4 + -13

-17

damaskus [11]3 years ago
5 0

Answer:

-17

Step-by-step explanation:

<u>Step 1:  Evaluate the expression</u>

<u />x - (-z)

-4 - (-(-13))

-4 - (13)

-4 - 13

-17

Answer:  -17

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Calculate the average rate of change for the graphed sequence from n = 1 to n = 3.
Strike441 [17]
<span>A1 is the 1st term  r is the difference, they can say "r" or "d" for the difference   1st a1 is the first term = -3 2nd "r" is the difference between each consecutive terms (coming after each other) = 1.5 the rule to get any term of the sequence as we add 1.5 each time is --> a1+(n-1)*d  a1 --> 1st term , n --> order of the term u want whether 2nd, 3rd , 25th  d --> difference  so to get the 2nd-->    -3+(2-1)*1.5= -1.5 to get the 3rd -->        -3 +(3-1)*1.5 = 0  and so on</span>
8 0
3 years ago
Read 2 more answers
On a coordinate plane, a solid straight line has a positive slope and goes through (negative 4, 0) and (0, 2). Everything to the
Paha777 [63]

Answer:

y\le\dfrac{1}{2}x+2

Step-by-step explanation:

On a coordinate plane, a solid straight line has a positive slope and goes through (negative 4, 0) and (0, 2). This line has the equation

y-0=\dfrac{2-0}{0-(-4)}(x-(-4))\\ \\y=\dfrac{1}{2}(x+4)\\ \\y=\dfrac{1}{2}x+2

The origin belongs to the shaded region, so its coordinates must satisfy the inequality. Since

\dfrac{1}{2}\cdot 0+2=2\ge 0,

then the correct inequality is

y\le\dfrac{1}{2}x+2

9 0
3 years ago
Read 2 more answers
Suppose speeds of vehicles traveling on a highway have an unknown distribution with mean 63 and standard deviation 4 miles per h
Mashutka [201]

Answer:

The standard deviation for the sample mean distribution=0.603

Step-by-step explanation:

We are given that

Mean,\mu=63

Standard deviation,\sigma=4

n=44

We have to find the standard deviation for the sample mean distribution using  Central Limit Theorem for Means.

Standard deviation for the sample mean distribution

\sigma_x=\frac{\sigma}{\sqrt{n}}

Using the formula

\sigma_x=\frac{4}{\sqrt{44}}

\sigma_x=\frac{4}{\sqrt{2\times 2\times 11}}

\sigma_x=\frac{4}{2\sqrt{11}}

\sigma_x=\frac{2}{\sqrt{11}}

\sigma_x=0.603

Hence, the standard deviation for the sample mean distribution=0.603

6 0
3 years ago
Give a big-o estimate for the number of operations (where an operation is an addition or a multiplication) used in this segment
Marianna [84]
We have a "rectangular" double loop, meaning that both loops go to completion.
So there are 3*4=12 executions of t:=t+ij.

Assuming two operatiions per execution of the innermost loop, (i.e. ignoring the implied additions in increment of subscripts), we have 12*2=24 operations in all.

Here the number of operations (+ or *) is exactly known (=24). 

Big-O estimates are used for cases with a varying scale of operations, governed by a variable (usually n) to indicate the sensitivity of the number of operations relative to a change in the size of n.

Here we do not have a scale, nor n is defined.  The number of operations is constant and known at 24.   So a variable is required to find the big-O estimate.
6 0
4 years ago
Find the zero of the function /(x) = 5x-3.
Bad White [126]

Answer:

3/5

Step-by-step explanation:

Set it equal to 0

5x-3=0

Then solve for x

5x=3

x=3/5

Check

5(3/5) - 3

3-3

0

4 0
3 years ago
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