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Dmitry [639]
3 years ago
9

2 QUESTIONS WILL MARK BRAINLIEST!!!!!!!!!!!!89PTS HELP!!!!!!!!!!!!

Mathematics
2 answers:
Anni [7]3 years ago
8 0
1 is <span>y = 15x, in 9 years he will have saved $13,500

2 is </span><span>x2 − 4x − 21

</span>
ValentinkaMS [17]3 years ago
8 0
Question 1. 

30 - 15/ 2 - 1 = 15/1 = 15 
y - 15 = 15(x - 1) 
y - 15 = 15x - 15 
   + 15           + 15
y = 15x 

Answer: <span>y = 15x, in 9 years he will have saved $13,500



Question 2.
(x - 7)(x + 3) 
x^2 + 3x - 7x - 21 (Combine like terms)
x^2 + 4x - 21 <------------------Answer

Thus, the answer is Choice C. </span>
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Which table of values represents the equation Y= 2X +5?
barxatty [35]

Answer:

12

Step-by-step explanation:

212113

8 0
2 years ago
What is the intermediate step in the form (x+a)^2=b(x+a)
Step2247 [10]

Answer:

The intermediate step are;

1) Separate the constants from the terms in x² and x

2) Divide the equation by the coefficient of x²

3) Add the constants that makes the expression in x² and x a perfect square and factorize the expression

Step-by-step explanation:

The function given in the question is 6·x² + 48·x + 207 = 15

The intermediate steps in the to express the given function in the form (x + a)² = b are found as follows;

6·x² + 48·x + 207 = 15

We get

1) Subtract 207 from both sides gives 6·x² + 48·x = 15 - 207 = -192

6·x² + 48·x = -192

2) Dividing by 6 x² + 8·x = -32

3) Add the constant that completes the square to both sides

x² + 8·x + 16 = -32 +16 = -16

x² + 8·x + 16 = -16

4) Factorize (x + 4)² = -16

5) Compare (x + 4)² = -16 which is in the form (x + a)² = b

7 0
3 years ago
Bob bought 3 packs of model cars he gave 4 cars to ann Bob has 11 cars left how many model cars were in each pack
Harrizon [31]
First add 11 and 4 because you need to know how many he had in total 11+4=15 then divide 15 by 3 and then you have you answer 15/3=5.
There are 5 model cars in each pack.
5 0
3 years ago
4a to 3rd power b to 4power times b to 3rd power times 2b to 3rd power divided by 4b
ddd [48]

(4a^3b^4(b^3)(2b^3))/4b


4a^3b^3(b^2)(2b^2)/4

5 0
3 years ago
HELP!! Simplify the expression 3y^2 • 4x^2y • 5x Using the laws of exponents. Show each step of your work.
JulsSmile [24]
<span>3y^2 • 4x^2y • 5x = (3*4*5) * (</span><span>y^2 * y) * (</span><span>x^2*x) = 60 * y^3 * x^3 = 60 (xy)^3


</span>where ((<span>y^2 * y)) adding the powers in case of multiplication

and also for this:</span><span> (<span>x^2*x)</span>  </span>
5 0
3 years ago
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