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MatroZZZ [7]
3 years ago
15

I really need help big time thank you

Mathematics
1 answer:
Hunter-Best [27]3 years ago
5 0
1) 2x² -5x+12
2) x² +7x+10
3) 3x² +5x-2
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Suppose the length of segment BE is 11 cm. Which is the BEST ESTIMATE for segment GH?
JulijaS [17]

Answer: C) 5.5 cm.

Step-by-step explanation:

From the given , it can be clearly seen that in triangle DBE , G and H are the midpoints of segment DB and DE respectively.

Also, GH is parallel to BE. [By Converse of Basic proportionality theorem]

Length of BE= 11 cm.

Further more,

\dfrac{DB}{DG}=\dfrac{BE}{GH}\\\\\Rightarrow\dfrac{2DG}{DG}=\dfrac{11}{GH}\ \ [{DG=GB,\therefore\ DB=2DG }]

\Rightarrow\ \dfrac{2}{1}=\dfrac{11}{GH}\Rightarrow\ GH=\dfrac{11}{2}=5.5\text{ cm}

Hence, the  BEST ESTIMATE for segment GH is 5.5 cm.

Note :

Converse of Basic Proportionality Theorem says that when a line (or a segment) divides any two sides of a triangle in equal proportion then the line ought to be parallel to the remaining third side.

7 0
4 years ago
The product of (3 + 2i) and a complex number is (17 + 7i)
Tatiana [17]
<span> Of course you're looking for the ratio: (17+7i)/(3+2i). To get a clear number, you need to get a real number at the denominator -- and it so happens that the product of two complex conjugates is a real number. So, you multiply the denominator and the numerator by the conjugate of 3+2i. The denominator becomes 13 and the numerator becomes 51 + 7i. Hence, the multiplier is 51/13 + 7/13 i. </span>

<span>As a side note, while you probably knew how to factor a difference of squares, I just showed how to factor a sum of squares: a^2 + b^2 = (a + bi)(a - bi). That holds because i^2 = -1.

Hope this's useful/helpful !!!^_~!!!</span>
8 0
3 years ago
20+25+65 using GCF and the distributive property
goldenfox [79]

Answer: 110

Find the prime factors of each term in order to find the greatest common factor (GCF).

Find the GCF 20+25+65

5 0
3 years ago
F(x) = 3x^2 -15<br> g(x) = 1 -2/3x
Oliga [24]

Answer:

f(g(-6)) is equal to 60

Step-by-step explanation:

We can simply solve this by first plugging -6 into function 6, and then applying function f to the result of that.

f(g(-6))\\= f(1 - \frac{2(-6)}{3})\\= f(1 - \frac{-12}{3})\\\\= f(1 + 4)\\= f(5)\\= 3(5)^2 - 15\\= 3 * 25 - 15\\= 75 - 15\\= 60

8 0
3 years ago
I really need help guys​
Degger [83]

Answer:

Step-by-step explanation:

First you have to organize your information:

3 Teach.= 70 children

There are 14700 children 210 times 70.

You multiply 3*210 =70*210 because if you multiple one side you have to do the other to.

This equals 630= 14700. They need 630 teachers.

They have 612 so you only have to subtract 630 -612 =18

They need 18 teachers more.

7 0
3 years ago
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