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navik [9.2K]
3 years ago
8

Answer 10 points!!! hurry

Mathematics
1 answer:
Reil [10]3 years ago
5 0

Answer:

Height: 7 centimeters

Base: 42 centimeters

Step-by-step explanation:

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Question 1 (1 point)
olga55 [171]

Answer:

1) 2y^{2}+4y-9

2) 18x^{5}y^{4}z

3) 6x^{5}-12x^{4}+9x^{3}

4) 40

5) x^{3}-7x^{2}+3x+36


Step-by-step explanation:

1) Distribute the negative sign that is outside the parentheses and then you must add like terms, as following:

(y^{2}-3y-5)-(-y^{2}-7y+4)=y^{2}-3y-5+y^{2}+7y-4=2y^{2}+4y-9

2) According to the Product property of exponents, when you multiply powers with the same base, you must add the exponents. Then:

(6xy^{3}z)(3x^{2}yx^{2})=18x^{5}y^{4}z

3) Apply the Distributive property and the Product property of exponents. Then, you obtain:

-3x^{3}(-2x^{2}+4x-3)=6x^{5}-12x^{4}+9x^{3}

4) (4a+5)^{2} is a square of a sum, then, by definition you have:

(a+b)^{2}=a^{2}+2ab+b^{2}

Then:

(4a+5)^{2}=(4a)^{2}+2(4a)(5)+5^{2}=16a^{2}+40a+25

The coefficient of the second term is the number in front of the variable <em>a.</em> Then, the answer is: 40

5)  Apply the Distributive property and the Product property of exponents, then, oyou must add the like terms:

(x-4)(x^{2}-3x-9)=x^{3}-3x^{2}-9x-4x^{2}+12x+36=x^{3}-7x^{2}+3x+36

6 0
3 years ago
In a systematic review with a meta-analysis, researchers combine the results of each of the individual studies to create a large
seropon [69]

Answer: Power Analysis

Step-by-step explanation:

5 0
3 years ago
Evaluate each expression for the given value(s)
Butoxors [25]

Answer:

-16

Step-by-step explanation:

Substitute the values into the equation

=  \frac{ ({ - 12 + 4}^{2}) }{ - 4}  \\  = \frac{ {( - 8)}^{2} }{4}  \\  = \frac{64}{4}  \\  =  - 16

<h2><em>OladipoSeun</em><em>♡˖꒰ᵕ༚ᵕ⑅꒱</em></h2>

4 0
3 years ago
What is the area as a product and area as a sum of (x + 2)(x + y – 2) ?
Brilliant_brown [7]

Answer:

4y

Step-by-step explanation:

3 0
3 years ago
Plz help me, I have others I need help with​
lisov135 [29]

Step-by-step explanation:

That function is a line that goes through the origin (0,0).

You only need one more point to be able to draw it.

Take x=4,5 the corresponding value of y is exactly what you want to know, the number of miles the lava moved after 4,5 hours.

So y = 6 * 4,5 = 27

Your second point is (4,5 , 27).

Now you can draw your line.

6 0
3 years ago
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