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2 years ago

Evaluate 2x - y + 4z, if x = 1, y = 2 and z = -1

Mathematics

1 answer:

lidiya [134]2 years ago

5 0

2 x 1 - 2 + 4 x -1 =

the answer is -4.

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The measure of an obtuse angle is 5y + 45 what are the restrictions on y?

Allushta [10]

5y+45=180
5y=135
y=135/5
y=27

6 0

3 years ago

What is the minimum number of 60 passenger buses needed to transport 200 students?

astraxan [27]

The answer is 4. 3 busses would carry 180, so you gotta have that one extra bus. The question is set up to kind of throw you off but it's quite simple

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2 years ago

Which list orders the number from least to greatest

sineoko [7]

Answer:

Option C

-5, -2, 1, 3

Step-by-step explanation:

to get the list that orders the numbers from the least to the greatest, we need to, first of all, know the smallest and the largest numbers.

The largest number is easy to guess - it is undoubtedly 3.

However, the smallest number may be a bit tricky because we are dealing with negative numbers. When dealing with negative numbers, the numbers with greater magnitudes are actually smaller. This means that -5 is less than -3, which is less than -2, and so on.

Coming back to our question, we can now order the numbers as -5, -2, 1, 3 which is option C

3 0

2 years ago

5) Solve. x - 32 = 73 A) x = 41 B) x = 105 C) x = 2336 D) x = 2 9/32

Mice21 [21]

Answer:

Step-by-step explanation:

105 - 32 = 73

6 0

2 years ago

Read 2 more answers

Compare and Contrast Graph y = 2x + 5 and y=-13x+5. Describe how these lines are alike and how they are different. *

krek1111 [17]

Here are a couple I found:

Similarities:

They have the same y-intercept of (0,5).
They are both in slope-intercept form.

Differences:

The line of y = -13x + 5 "falls" from left to right. The line of y = 2x + 5 "rises" from left to right.
They have different x-intercepts. (y = 2x + 5 intersects (- $\frac{5}{2}$ , 0) while y = -13x + 5 intersects at ( $\frac{5}{13}$ , 0)

Explanation:

Slope-intercept form is y = mx + b, and by looking at the equations, they both already fit that format, with m as their slope and b as their y-intercept. Also, since they both have a 5 as that "b," their y-intercepts are the same: (0,5).

As for differences, we can see that the coefficient in place of that "m" is positive in y = 2x + 5 and negative in y = -13x + 5. Therefore, one line would rise due to their slope being positive and one would fall due to their slope being negative. They also have two different x-intercepts, which we can calculate by substituting 0 in place of the y, then isolating x.

4 0

2 years ago