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V125BC [204]
3 years ago
5

Please someone help I need help

Mathematics
1 answer:
azamat3 years ago
7 0

Answer:

a b d are correct

Step-by-step explanation:

see the steps in the pic

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Can someone please help me with this math question please. Please
ddd [48]

9514 1404 393

Answer:

  14. (x, y) = (1, 3)

  15. $6200

Step-by-step explanation:

14. Substitution is a nice strategy for this one, since we have an expression for y. Using the second equation in the first, we get ...

  4x +(2x+1) = 7

  6x +1 = 7 . . . . . . . collect terms

  6x = 6 . . . . . . . subtract 1

  x = 1 . . . . . . . divide by 6

  y = 2(1) +1 = 3 . . . . substitute for x in the second equation

The solution is (x, y) = (1, 3).

__

15. The formula for the balance when the investment earns simple interest is ...

  A = P(1 +rt)

where P is the principal invested, r is the annual rate, and t is the number of years.

For the given values, we find the account balance to be ...

  A = $5000(1 +0.04·6) = $5000·1.24 = $6200

Jacob will have $6200 in his account after 6 years.

3 0
3 years ago
Explain in vertex form to standard form
natta225 [31]

Answer:

standard form - y= ax^2 + bx + c

vertex form - y= 2x^2 + 12x + 12

Step-by-step explanation:

I am not sure of what u needed but...

5 0
3 years ago
Solve the equations: |x-1|/|x-1| = 1
Tanya [424]
X = 2
The absolute value lines basically just serve as parentheses in this equation.
(2-1)/(2-1) = 1
(1)/(1) = 1
6 0
3 years ago
Read 2 more answers
Kwan's parents bought a home for $50,000 in 1997 just as real estate values in the area started to rise quickly. Each year, thei
poizon [28]

A. First let us start with the linear model.

The equation is in the form of y = m x + b

Calculating for the slope m:

m = (309,587 – 50,000) / (2007 – 1997)

m = 25,958.7

 

Subsituting:

y = 25,958.7 x + b

Taking x = 1997, y = 50,000. Solve for b:

50,000 = 25,958.7 (1997) + b

b = -51,789,523.9

 

The complete equation is therefore:

y = 25,958.7 x - 51,789,523.9

 

 

B. The exponential model has the following form:

y = a b^x

where a and b are constants

 

Taking x1= 1997, y1 = 50,000; x2 = 2007, y2 = 309,587

50,000 = a b^1997

309,587 = a b^2007

 

Combining in terms of a:

50,000 / b^1997 = 309,587 / b^2007

b^2007 / b^1997 = 309,587 / 50,000

b^10 = 6.19174

b = 1.2

 

Substituting:

y = a 1.2^x

 

Solving for a:

50,000 = a 1.2^1997

a = 3.75 x 10^-154

 

The complete equation is:

y = 3.75 x 10^-154 * 1.2^x

3 0
3 years ago
Sampson has a list of items that are on sale to pick up at the store. The sale items are the following:
olchik [2.2K]

Answer:

the answer is A) Yes, Sampson's receipt is correct.

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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