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Paladinen [302]
3 years ago
11

6x +9y=7 2x+3y=13 liner equation​

Mathematics
1 answer:
Artyom0805 [142]3 years ago
5 0

Answer:

yes it is linear equation in two variable

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Liza earn some money delivering newspapers she bought a battery for $1.95 and gave her mother $30 she bought a ring for $7.20 an
SIZIF [17.4K]
The total amount of money that Liza made delivering newspapers was equal to $116.15.
4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%7B8%20%7D%5E%7B2%7D%20%20%2B%20%20%7B10%7D%5E%7B3%7D%20%20%5Cdiv%20%20%7B5%7D%5E%7B2%7D%20
Maslowich

Use PEMDAS

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right)

8^2+10^3\div5^2=64+1000\div25=64+40=104

5 0
3 years ago
Every year, a town surveys the size of its wetland ecosystems. This equation estimates the total wetland area, in acres, over ti
nignag [31]

Answer:

When t=10, the town is predicted to have around 443 acres of wetlands.

At one time, the town had 740 acres of wetlands.

The wetland area in the town decreases by 5% per year.

Step-by-step explanation:

Given

f(t) = 740 * (0.95)^t

Required

The true statements

(a)\ f(10) = 443

We have:

f(t) = 740 * (0.95)^t

Substitute 10 for t

f(10) = 740 * (0.95)^{10

f(10) = 443

<em>Hence, (a) is true</em>

(b)\ f(t) = 740

We have:

f(t) = 740 * (0.95)^t

Substitute 740 for f(t)

740 = 740 * (0.95)^t

Divide through by 740

1 = 0.95^t

Express 1 as 0.95^0

0.95^0 = 0.95^t

Cancel out the bases

0 = t

t = 0

Hence, the area had 740 acres initially;

(b) is true

(c)\ r = 5\%

We have:

f(t) = 740 * (0.95)^t

Using the general formula

f(t) = a * b^t

By comparison:

b = 0.95

0.95 < 1 means that:

b = 1 - r --- where r = rates

0.95 = 1 - r

Collect like terms

r = 1 - 0.95

r = 0.05

Express as percentage

r = 5\%

Hence, (c) is true

(d)\ f(10) = 492

In (a)

f(10) = 443

Hence, (d) is false

(e)\ r = 95\%

In (c)

r = 5\% ---- decrement

Hence, (e) is incorrect

5 0
3 years ago
Convert to the same base: 2^x+3=4^x-2
Naddika [18.5K]

Answer:

2^x+3= 2^2(x-2)

Step-by-step explanation:

as 4 can be written as 2^2

2^x+3= 2^2(x-2)

so 2^x+3= 2^2x-4 is the answer..

6 0
4 years ago
Find the area of a regular
LuckyWell [14K]

Answer:

The area of a regular polygon is A = (1/2)ap, where a is the apothem and p is the perimeter of the polygon.  

The apothem is 8 inches and the perimeter is 6(7) = 42 since there are 7 sides of 6 inches.  

Then the area is

A = (1/2)(8)(42) = 336/2 = 168 in2  

I hope this helped!

Step-by-step explanation:

Mark me as brainlist pleasee

8 0
3 years ago
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