admin

2 months ago

Guest #10630

2 months ago

For this case we have to factorize the following trinomials as the product of two binomials.

We have then:

** a2 + a - 20**

(a + 5) (a-4)

** a2 - 9a + 20**

(a-5) (a-4)

**a2 - 8a - 20**

(a-10) (a + 2)

** a2 - 12a + 20**

** **(a-10) (a-2)

** a2 - 19a - 20**

(a-20) (a + 1)

We have then:

Guest #10631

2 months ago

**Answer:**

a2 + a - 20

(a + 5) (a-4)

a2 - 9a + 20

(a-5) (a-4)

a2 - 8a - 20

(a-10) (a + 2)

a2 - 12a + 20

(a-10) (a-2)

a2 - 19a - 20

(a-20) (a + 1)

**Step-by-step explanation:**

Question

On the first five performance scores at work,your score were:84,83,92,80, and 95.On the average, what was the score? a.62
b.84.75
c.86.8
d.88.5

Solution 1

84+83+92+80+95=434

434/5= 86.8

The correct answer is C

434/5= 86.8

The correct answer is C

Question

Given a mean of 61.2 and a standard deviation of 21.4 what is the z score of the value 90 rounded to the nearest tenth?

Solution 1

**Answer:**

The z-score of 90 is 1.35

**Step-by-step explanation:**

The z-score is calculated using the formula:

From the question, it was given that the mean is

and the standard deviation is

and x=90.

We substitute the given values to obtain:

Solution 2

**Answer:**

1.35

**Step-by-step explanation:**

Question

Evaluate ab for a = 2 3/4 and b = 4/5

Solution 1

Saying *ab* in Algebra means *a*×*b.*

So, you're multiplying 2 to .

But, the mixed number is best as a mixed number, so it becomes

So, this happens to become , multiplying to .

BUT, you need to simplify it!

The simplest form is ,**which is your answer.**

Have a nice day! ♪

But, the mixed number is best as a mixed number, so it becomes

So, this happens to become , multiplying to .

BUT, you need to simplify it!

The simplest form is ,

Question

Write the number thirty five million thirty thousand

Solution 1

35,030,000 is the correct answer, hope this helps.

Solution 2

35,030,000 hope this helps! (:

Question

Which ordered pair is a solution of the equation? 3x-y=133x−y=13

Solution 1

3x - y = 133

x - y = 13

------------------subtract

2x = 120

x = 60

substitute x = 60 into x - y = 13 to find y

x - y = 13

60 - y = 13

y = 60 -13

y = 47

answer

x = 60 and y = 47

x - y = 13

------------------subtract

2x = 120

x = 60

substitute x = 60 into x - y = 13 to find y

x - y = 13

60 - y = 13

y = 60 -13

y = 47

answer

x = 60 and y = 47

Question

What is the standard deviation of the following data set rounded to the nearest tenth? 56,78,123,34,67,91,20

Solution 1

**Answer:**

32.2

**Step-by-step explanation:**

The given data set is:

56,78,123,34,67,91,20

The mean of this data set is

The standard deviation is given by;

Question

Which group of numbers is listed from least to greatest? -6, |-3|, -3, 6, |-9|
-8, |-5|, -4, |3|, 6
-4, |-2|, |3|, 5, |-7|
|-6|, -4, |-2|, -1, 0

Solution 1

No weong because that is absolute value and with that it means the distance from zero it is the 3rd row because it is actually like this -4,2,3,5,7

Question

Which of these correct? a.30,792 < 31,875
b.31,875 < 32,496
c.31,875 <30,792
d.32,496 < 31,875

Solution 1

I'm guessing it would be (a.)

Hope this helps. :D

Hope this helps. :D

Solution 2

A and B are both correct.

Question

What is the value of g divide by 4,if g=20?
a.4
b.5
c.6
d.7

Solution 1

What is the value of g divide by 4, if g = 20?

Answer:

Plug it in:

20/4

Simplify:

= 5

so the answer is B.

Hope this helps!

Answer:

Plug it in:

20/4

Simplify:

= 5

so the answer is B.

Hope this helps!

Solution 2

The answer is b.5 because 5 x 4 is 20 and g is 20

Question

The first military strike of the Civil War was at Bull Run
Lexington
Fort Sumter
Gettysburg

Solution 1

It was in fort sumter

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