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stira [4]
3 years ago
11

Solve by factoring... plz show the work. !x^2+9+20. ? ​

Mathematics
1 answer:
Helen [10]3 years ago
6 0

if you meant x^2+9x+20 then it is (x+4)(x+5) you know that because 4+5=9 and 4x5=20 using FOIL

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Can 7/30 be reduced?
JulijaS [17]

Answer:

no

Step-by-step explanation:

as 7 is a prime numbers and prime numbers cannot be reduced .

8 0
3 years ago
The rectangular rug has side lengths of 3 and 4 ft. What is the length of the diagonal? Draw a picture of the problem and solve.
Nadusha1986 [10]

ANSWER

The length of the diagonal is 5 ft

EXPLANATION

The diagram of the rug with the diagonal is:

The diagonal and the sides form a right triangle, so we can use the Pythagorean theorem to find x, the length of the diagonal:

\begin{gathered} x^2=3^2+4^2 \\ x=\sqrt[]{9+16} \\ x=\sqrt[]{25} \\ x=5 \end{gathered}

7 0
1 year ago
What is the sum of the measures of the interior angles of a pentagon?
jek_recluse [69]
Hi,

The sum of the measures of the interior angles of a polygon with x sides is equal to (x-2) times 180 degrees. A pentagon has got 5 sides, so the sum of the measures of its interior angles is 180(5-2) = 180(3) = 540 degrees.

I hope this helps. If I was not clear enough or if you’d like further explanation please let me know. Also, English is not my first language, so I’m sorry for any mistakes.
5 0
3 years ago
Which equations are true?
atroni [7]

Answer:

The third one and the fourth one.

Step-by-step explanation:

61 x 5 = 305. Not 3050

381*27=10287. Not 1152

854*63=53802.

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8 0
3 years ago
Read 2 more answers
Simplify: 0.810×0.00048 all over 0.000400×0.027
elixir [45]

Answer:

36

Step-by-step explanation:

Okay! This question is a very simple one, but without a calculator, your answer could easily vary from others! So, let´s do this one together!

The equation:

0.810x0.00048/0.000400x0.027

Let´s do the top :

0.810 x 0.00048 = 0.0003888

I will leave these numbers the same until the last part, lets not round them.

Bottom:

0.0004 x 0.027 = 0.0000108

And again I am not going to round this number.

Now we can divide!

0.0003888/0.0000108 = 36

I hope this helped!

4 0
3 years ago
Read 2 more answers
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