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Sav [38]
3 years ago
15

Replace * with a monomial so that the expression represents the square of a binomial: *+24x+9

Mathematics
2 answers:
Shkiper50 [21]3 years ago
5 0

Answer:

* is 7x^{2}

Step-by-step explanation:

(7x + 3)(x + 3)

=  7x^{2} + 24x + 9

DaniilM [7]3 years ago
4 0

Answer:

7x²

Step-by-step explanation:

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Degger [83]
[- 12 - 8x +5 16x]+ 6
7 0
3 years ago
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Two angles of a triangle measure 15° and 85°. What is the measure for the third angle
disa [49]

Answer:

15+85+x =180

X=180-15-85

X=8O°

Step-by-step explanation:

6 0
3 years ago
Y = 4x + 5<br> 2x + y = 17<br><br> Something about substitution to solve a system of an equation
Leto [7]

Answer:

x=2, y=13. (2, 13).

Step-by-step explanation:

y=4x+5

2x+y=17

----------

2x+4x+5=17

6x+5=17

6x=17-5

6x=12

x=12/6

x=2

y=4(2)+5

y=8+5=13

8 0
3 years ago
The area of a square is 49 square meters. How long is each side?
Artemon [7]

A square has 4 equal sides, which means when you need to work out the area, you're doing length × width, but the length and width are exactly the same, because it's a square (look at the picture if you don't understand this).

That means you just have to pick any side (let's call this side x), and multiply it by another side of the square. Now, because all of the sides are equal, you're doing x multiplied by x, which is the same as x².

Therefore, if the area is equal to x², and in this question, it's also equal to 49 (as stated in the question), we can equate them to each other:

x² = 49

Now to get the x by itself, we need to do the opposite of squaring, which is square rooting. Therefore, we square root both sides of the equation:

√x² = √49

The √ and the ² cancel out, so you're just left with x:

x = √49

The square root of 49 is just 7, so we can replace √49 with 7, and we get:

x = 7

Now remember, earlier, I called x the value of one side. Therefore, by remembering that, you know that the value of one side is equal to 7. And because all the sides are the same as each other, each side is equal to 7 metres.

Therefore, your final answer is 7 metres :)

3 0
3 years ago
Five students are running for Junior class president. They draw straws to see who will go first, second, etc. In how many differ
SpyIntel [72]
<h3>Answer:  120</h3>

===================================================

Explanation:

There are 5 choices for the first selection, 4 choices for the second, etc etc until we reach 1 for the last selection. We have the countdown {5,4,3,2,1}. We'll multiply those values together to get our answer.

5*4*3*2*1 = 120

This operation of starting with some integer, counting down and multiplying along the way, is done so very often that it's given a name which is "factorial". The shorthand notation is to use an exclamation mark. So we'd say 5! = 120

6 0
3 years ago
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