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qwelly [4]
3 years ago
6

3. Multiply the polynomials (a^2 + 3a – 4) and (2a^2 – a + 5). Simplify the answer. Show your work.

Mathematics
1 answer:
Elza [17]3 years ago
8 0

Answer:

2a^4+5a^3-6a^2+19a-20

Step-by-step explanation:

(a^2+3a-4)(2a^2-a+5)

2a^4-a^3+5a^2+6a^3-3a^2+15a-8a^2+4a-20

2a^4-a^3+6a^3+5a^2-3a^2-8a^2+15a+4a-20

2a^4+5a^3+2a^2-8a^2+19a-20

2a^4+5a^3-6a^2+19a-20

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Factor the trinomial x^2 + 6x - 27
krek1111 [17]
If you factor the trinomial using the AC method the answer would be 

(x-3)(x+9)
5 0
3 years ago
Read 2 more answers
Find AC if A=25°, B=24°, and CB=14
photoshop1234 [79]
Answer is 38
25+14=38
8 0
3 years ago
400x34+23444444444-23444444444
Alex777 [14]

I hope you want to simplify this expression.

To simplify the given expression we can use the order of operation.

So, first step is to operate multiplication. Therefore,

400 x 34 = 13600

Hence,

400x34+23444444444-23444444444

= 13600 +23444444444-23444444444

= 13600 + 0 Since +23444444444-23444444444 = 0

= 13600.

So, the simplified value of the given expression is 13600.

Hope this helps you!.

4 0
3 years ago
Aiyanah made 12 withdrawals of $175.25 each from her bank account. Then she made 17 deposits of $235.66 to her same account that
Nonamiya [84]

Answer:

The overall change is $1903.22

Step-by-step explanation:

Let us approach this problem step wise

1.Firstly let us calculate all 12 withdrawal of $175.25

12*$175.25= $2103

2. Let us calculate all the deposits made 17* $235.66 = $4006.22

With these figures we can calculate the overall changes as

= $4006.22-$2103= $1903.22

3 0
3 years ago
On a math test, Johnny made a raw score of 95 on a 40 question test. The correct answers were given 5 points each while incorrec
Sidana [21]
X - the number of questions he answered correctly
y - the number of questions he answered incorrectly

There were 40 questions on the test.
x+y=40 \\ y=40-x

The correct answers were given 5 points each, the incorrect answers were given -2 points each. He made a score of 95.
5x-2y=95 \\
-2y=95-5x \\
y=-\frac{95}{2}+\frac{5}{2}x


Set 40-x and (-95/2)+(5/2)x equal to each other:
40-x=-\frac{95}{2}+\frac{5}{2}x \\
-x-\frac{5}{2}x=-\frac{95}{2}-40 \\
-\frac{2}{2}x-\frac{5}{2}x=-\frac{95}{2}-\frac{80}{2} \\
-\frac{7}{2}x=-\frac{175}{2} \\
x=-\frac{175}{2} \times (-\frac{2}{7}) \\
x=\frac{175}{7} \\
x=25

Johnny answered correctly 25 questions.
8 0
3 years ago
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