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Olegator [25]
3 years ago
9

Multiply the polynomials. (3x − 9)(5x + 1)

Mathematics
2 answers:
Murljashka [212]3 years ago
7 0
(3x − 9)(5x + 1)
3x * 5x
3x * 1
-9 * 5x
-9 * 1

15x^2 + 3x - 45x - 9
15x^2 - 42x - 9
Scilla [17]3 years ago
3 0
1 5 x ² - 4 2 x - 9

Ther

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The sum of eight and five times the number is 43
Scrat [10]
8+5*x=43
8+5x=43
5x=35
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7 0
3 years ago
Hey everyone! A little help will be needed/appreciated
lesya [120]

Answer:

2 and 1/4

Step-by-step explanation:

-5 1/4 - (-7 1/2)=

Rewrite as

-5.25 + 7.5 =2.25

5 0
3 years ago
Read 2 more answers
30 points!
GarryVolchara [31]

Answer:

Lines f and g are parallel.

Angle 2 is congruent to angle 6.

Angle 2 and angle 5 are supplementary

Step-by-step explanation:

7 0
3 years ago
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What is the solution to the following equation 4(3x-6)+15=27
Svetlanka [38]

Answer:

x = 3

Step-by-step explanation:

4(3x - 6) + 15 = 27 \\ 12x - 24 + 15 = 27 \\ 12x - 24 = 27 - 15 \\ 12x - 24 =1 2 \\ 12x = 12 + 24 \\ 12x = 36 \\  \frac{12x}{12}  =  \frac{36}{12}  \\ x = 3

3 0
4 years ago
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What is the area of the triangle shown below
kykrilka [37]

Answer: 60

Step-by-step explanation:

Using Heron's formula, we know that

Step 1: Calculate "s" (half of the triangles perimeter):

s =  (a+b+c)/2

Step 2: Then calculate the Area:

Herons formula A = sqrt( s(s-a)(s-b)(s-c) )

So S = 36/2 = 18

so \sqrt{18(18-13)(18-13)(18-10)}

So our final answer is the square root of 3600, which equals 60.

5 0
3 years ago
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