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2 years ago

Is -7 + 9= 9 + 7 true, false or open

2 answers:

6 0

$-7 + 9 \neq 9 + 7$

$2 \neq 17$

When you add a positive number and a negative number, you get a positive, but the number is smaller. If you add two positive numbers, then of course, you're going to get a positive number as an answer. But overall, this is false.

True [87]2 years ago

5 0

That's false -7+9=2 and 7+9=18

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Mary,Tom,Sophia & Isaac share minutes on their cell phone plan. Mary used 1/4 of the minutes,Tom used 0.5 of the minutes,and

nataly862011 [7]

Hello there! So, 1/4 is equivalent to 0.25, which is 25% in percent form. 0.5 is 50% and 0.2 is 20% in percent form. 50 + 20 + 25 is 95. 100 - 95 is 5. Issac can use 5% of the minutes on the cell phone plan. The answer is D: 5%.

5 0

3 years ago

Write and solve an equation to answer the question, "What number aa is 25% of 64?" An equation is __ =0.25* __. The solution is

Leokris [45]

What number aa is 25% of 64? An equation is a=0.25*64. The solution is a=16. Then check.

64 / 16 = 4. So 16 is the solution.

7 0

3 years ago

Suppose you are managing 16 employees, and you need to form three teams to work on different projects. Assume that all employees

valentina_108 [34]

Answer:

4380 ways

Step-by-step explanation:

We have to form 3 project of 16 employees, they tell us that the first project must have 5 employees, therefore we must find the number of combinations to choose 5 of 16 (16C5)

We have nCr = n! / (R! * (N-r)!)

replacing we have:

1st project:

16C5 = 16! / (5! * (16-5)!) = 4368 combinations

Now in the second project we must choose 1 employee, but not 16 but 11 available, therefore it would be to find the number of combinations to choose 1 of 11 (11C1)

2nd project:

11C1 = 11! / (1! * (11-1)!) = 11 combinations

For the third project we must choose 10 employees, but since we only have 10 available, we can only do a combination of this, since 10C10 = 1, therefore:

3rd project: 1 combination

The total number of combinations fro selecting 16 employees for each project would be:

4368 + 11 + 1 = 4380 combinations, that is, there are 4380 different ways of forming projects with the given conditions.

3 0

2 years ago

Plz help me with this question

irga5000 [103]

Answer:

122

Step-by-step explanation:

$x^6+y^2$

Plug in 1 for x and 11 for y

$=1^6+11^2$

1 to the power of any number will always equal 1

$=1+11^2\\=1+121\\=122$

I hope this helps!

7 0

2 years ago

Question 2 options:

Vikki [24]

Answer:

slope

point-slope form

correlation

Step-by-step explanation:

If you have a line and you know the coordinates of a point on the line, (x1, y1); and you know the slope, m, you can write the equation of the line in point-slope form, y - y1 = m(x - x1). 2 variable data whose point pattern can be represented best by a line is said to have a linear correlation.

The slope, meaning how steep a line is, is represented by the variable m for linear equations.

y - y1 = m(x - x1) is point-slope form, one type of linear equation to represent a straight line. (There is also standard form and slope-intercept form).

Correlation is the relationship between things, like 2 variable data.

8 0

2 years ago