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Cerrena [4.2K]
2 years ago
6

Combine the like terms to create an equivalent expression: −3x-6+(-1)

Mathematics
2 answers:
Hoochie [10]2 years ago
6 0

Answer:

-3x-7

Step-by-step explanation:

The like terms here are -6 and -1. When we add the two, we get -7. Therefore, the answer is -3x-7. Hope this helps!

asambeis [7]2 years ago
3 0

Answer:

-3x - 7

Step-by-step explanation:

-3x - 6 - 1 = -3x - 7

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What is the measure of angle F in degrees when H is 127degrees and G is 33.5 degrees?
irina1246 [14]

Answer:

19.5

Step-by-step explanation:

Here is a key factors in triangles, it must add up to 180 degrees.

You have three angles in a triangle ABC,

A = 127

B = 33.5

C = ?

In this case you would add the two together (160.5) and subtract from 180 giving you the angle C = 19.5

CHECK:

Add 127+33.5+19.5 = 180! Yes!

PLs mark brainliest if you can! :)

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3 years ago
Volume 918 yd. what is volume in ft
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3 years ago
Monique made several batches of soup for a potluck supper. Each batch required 3/4 of a pound of potatoes, and she used a total
Rina8888 [55]

Answer:

B and E

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
given a set of numbers n= {1,3,4,5,7}. if event a is the drawing of a number less than 4 and event b is the drawing of an even n
MAVERICK [17]
A OR b means that you add the individual probabilities...

P(<4)=2/5 and P(even)=1/5 so

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4 0
3 years ago
Which of the following is not a direct proportion?<br> A. y=3x<br> B. y=45x<br> C. y=72x<br> D. y=2
koban [17]

Answer:

Variation, in general, will concern two variables, say height and

weight of a person, and how when one of these changes, the other might

be expected to change.  We have direct variation if the two variables

change in the same sense, i.e. if one increases, so does the other.  

We have indirect variation if one going up causes the other to go

down.  An example of this might be speed and time to do a particular

journey, so the higher the speed the shorter the time.

Normally we let x be the independent variable and y the dependent

variable, so that a change in x produces a change in y.  For example,

if x is number of motor cars on the road and y the number of

accidents, then we expect an increase in x to cause an increase in y.  

(This obviously ceases to apply if number of cars is so large that

they are all stationary in a traffic jam.)

When x and y are directly proportional then doubling x will double the

value of y, and if we divide these variables we get a constant result.

Since if y/x = k  then (2y/2x) = k  where k is called the constant of

proportionality

We could also write this  y = kx

Thus if I am given the value of x, I multiply this number by k to find

the value of y.

Example: Given that y and x are directly proportional and y = 2 when

x = 5, find the value of y when x = 15.

We first find value of k, using y/x = k

                               2/5 = k

Now use this constant value in the equation y = kx for situation when

x = 15

     y = (2/5)*15

       = 30/5 = 6

If you want to do this quickly in your head, you could say, x has been

multiplied by a factor 3 (going from 5 to 15), so y must also go up by

a factor of 3.  That means y goes from 2 to 6.

Indirect Variation.

We gave an example of inverse proportion above, namely speed and time

for a particular journey.  In this case if you double the speed you

halve the time. So the product speed x time = constant

In general, if x and y are inversely proportional then the product xy

will be constant.

              xy = k

  or          y = k/x

Example:  If it takes 4 hours at an average speed of 90 km/hr to do a

certain journey, how long would it take at 120 km/hr

   k = speed*time = 90*4 = 360 (k in this case is the distance)

Then time = k/speed

         = 360/120

         = 3 hours.

To do this in your head, you could say that speed has changed by a

factor 4/3, so time must change by a factor 3/4.  However, for the

usual type of problem, go through the steps I outlined above.

Step-by-step explanation:

I hope these examples have made the idea of variation (both direct and

inverse) reasonably clear.

5 0
2 years ago
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