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-Dominant- [34]
3 years ago
10

Which expression is equivalent to 27 + 45? 8(3 + 6) 8(19 + 37) 9(3 + 5) 9(18 + 36)

Mathematics
2 answers:
Sladkaya [172]3 years ago
4 0
9(3+5) is equivalent because factoring a 9 out of both 27 and 45 leaves us with 9(3+5).
dlinn [17]3 years ago
3 0
It may be easier to just do the work until you find a result equal to 27+45.
You must do the work inside parentheses first:

8(3+6) = 8(9) = 72  It just happens that this is equal to 72.

8(19+37) = 8(56)    This is much greater than 72 and is not the correct answer.

And so on.
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Find the value of x in each case:
kotykmax [81]

9514 1404 393

Answer:

  x = 14°

Step-by-step explanation:

The triangle's interior angle at C is the supplement of the exterior angle marked 124°.

  C = 180° -124° = 56°

The exterior angle at B is the sum of the remote interior angles:

  6x = 56° +2x

  4x = 56° . . . . . . subtract 2x

  x = 14° . . . . . . . . divide by 4

6 0
2 years ago
Simplify √(49^8) ? a) 7√(5a^8) b) 7a^4 c)a√(24.5) d) 7a^8 please help as soon as possible.
WITCHER [35]
\bf \sqrt{49^8}~~
\begin{cases}
49=7\cdot 7\\
\qquad 7^2
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5 0
3 years ago
Las edades de dos hermanos tienen una razón de 2 a 1. Cuando transcurran 4 años, la razón entre sus edades será de 8 a 6. ¿Cuánt
Nataly [62]

Answer:

The age of brothers are 4 years and 2 years respectively.

Step-by-step explanation:

We are given that the ages of two brothers have a ratio of 2 to 1. When 4 years have passed, the ratio of their ages will be 8 to 6.

Let the age of the first brother be 'x years' and the age of the second brother be 'y years'.

So, according to the question;

  • The first condition states that the ages of two brothers have a ratio of 2 to 1, that means;

                                      \frac{x}{y} =\frac{2}{1}  

                                      x=2y  -------------- [equation 1]

  • The second condition states that when 4 years have passed, the ratio of their ages will be 8 to 6, that means;

                                       \frac{x+4}{y+4}=\frac{8}{6}

                               6({x+4})=8}(y+4)

                               6x+24=8y+32

                               6(2y)+24=8y+32

                               12y-8y=32-24

                                    4y=8

                                     y=\frac{8}{4} = 2 years

Putting the value of y in equation 1 we get;

                                     x = 2y

                                      x = 2 \times 2 = 4 years

Hence, the age of brothers are 4 years and 2 years respectively.

3 0
3 years ago
Write the polynomial in standard form. <br> 5z + 2z^3 - z^2 + 3z^4
pochemuha

Answer:

the standard form of this equation will be 3z^4 + 2z^3 - z^2 + 5z

Step-by-step explanation:

as much as I would like to, I'm really not that good at explaining things

5 0
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Mariulka [41]

Answer:

TRIANGLE

Step-by-step explanation:

ISOCELES

3 0
3 years ago
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