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Bess [88]
3 years ago
11

Is the following always, sometimes, or never true?

Mathematics
2 answers:
Kobotan [32]3 years ago
7 0

For this case we have the following expression:

14 + 3x - 7 = 7x + 7 - 4x

To answer the question, what we must do is rewrite both sides of the equation.

For this, we apply the associative property.

We have then:

3x + (14-7) = (7x-4x) + 7

Rewriting we have:

3x + 7 = 3x + 7

Since both sides of the equation are equal, then the expression is always true.

Answer:

A) Always

NeTakaya3 years ago
3 0
Out of the choices given, the following equation " 14+3x-7x+4-4x" is always true. The correct answer will be A. 
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If an experimenter sets equal to .01, then she is defining a "statistically rare" event as an event occurring more than one time
Fynjy0 [20]

Answer:

The correct answer is an event occurring one or fewer times in 100 times if the null hypothesis is true.

Step-by-step explanation:

For a statistically rare event, its probability is relatively small and the event is very unlikely to occur.  Therefore, if an experimental sets equal to 0.01 which is statistically rare, then we can interpret this mathematically as:

p(event) = 0.01 = 1/100

where p(event) is the probability of the event.

In addition, statistically, null hypothesis signifies no major difference between the specified parameters, and any obvious difference that might occur as a result of experimental error. Thus, it can be concluded that the event is occurring one or fewer times in 100 times if the null hypothesis is true.

3 0
4 years ago
A punch recipe says to mix 4 cups pineapple juice 8 cups orange juice and 12 cups seltzer in order to make 18 servers of punch.H
lesya692 [45]
81 servings. I found this by making a ratio:
24 c            108 c
-------     =    -------
18 ser            x
I then cross multiplied to get the equation: 24x=1,944. I solved this equation to find x, the number of servings in 108 cups, which was 81. 

I remember doing this back in elementary school. I had a hard time with it too!
6 0
3 years ago
Please help me please I will really appreciate
Sladkaya [172]

Answer:

Step-by-step explanation:

If we draw this triangle with Q as the vertex angle (the one at the top of the triangle) then the 2 sides are congruent and this is an iosceles triangle. Because this is an isosceles triangle, then the 2 base angles, angle R and angle S are congruent. If Q measures 114 degrees, then angles R and S together have to add up to the difference between 180 and 114:

180 - 114 = 66

Divide that in half so R = S = 33 degrees each

5 0
3 years ago
The parking spaces in a city lot were created by painting rows of parallel line segments, then painting a line that cuts through
Svetach [21]

Answer:

65°

Step-by-step explanation:

The consecutive interior angles theorem states that if two parallel lines are cut by a transversal line then the resulting pair of consecutive angles formed are supplementary (that is they add up to 180°).

Given that the painting rows are parallel to each other and a painted line (transversal) cut the parallel lines forming consecutive interior angles m∠1 and m∠2. Therefore:

m∠1 + m∠2 = 180°

m∠1 + 115 = 180

m∠1 = 180 - 115

m∠1 = 65°

3 0
3 years ago
Read 2 more answers
Multiply the binomials (x - 8) (x + 8)
Phantasy [73]
<span>(x - 8) (x + 8)
= x^2 - 8x + 8x -64
= x^2 - 64</span>
3 0
4 years ago
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