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tekilochka [14]
3 years ago
6

Solve the equation below for x: - 3/ x+2 = 7 /x+5

Mathematics
2 answers:
victus00 [196]3 years ago
6 0

Answer:

X = -29/10

Step-by-step explanation:

 

drek231 [11]3 years ago
3 0
X=-28/7 sorry not sure that is what it is when I caculated it
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2.) Bob has two weekend jobs. Last weekend he made a total of $77 after
Butoxors [25]

Answer:

Step-by-step explanation:

x= money earned per hour working as a cashier.

y=money earned per hour working delivering newspapers.

We propose the following system of equations:

5x + 4y =77

6x + 3y=78

We solve the system by reduction method:

-6*(5x+4y=77) ⇒  -30x-24y=-462

5*(6x+3y=78)⇒     30x+15y=390

                             ---------------------------

                                     -9y=-72  ⇒   y=-72 /-9=8

Now, we get the value of "x" replacing the value of "y" by "8" in any part of the equation above.

5x + 4(8)=77

5x+32=77

5x=77-32

5x=45

x=45/5=9

therefore;  

money earned per hour working as a cashier= $9/ hour

money earned per hour working delivering newspapers=$8/hour

7 0
3 years ago
Read 2 more answers
For each explicitly-defined sequence below, write the first few terms. Then use the terms to write a recursive equation.
julia-pushkina [17]

Answer:

Step-by-step explanation:

Problem A

t(1) = 2(1) + 5

t(2) = 2*2 + 5 = 9

t(3) = 2*3 + 5 = 11

t(4) = 2*4 + 5 = 13

So this is the explicit result. Now try it recursively.

t_3 = t_2 + 2

t_3 = 9 + 2

t_3 = 11          which is just what it should do.

t_n = t_(n - 1) + 2

Problem B

t(1) = 3 * 1/2

t(1) = 3/2

t(2) = 3*(1/2)^2

t(2) = 3 * 1/4

t(2) = 3/4

t(3) = 3*(1/2)^3

t(3) = 3 * 1/8

t(3) = 3/8

t(4) = 3 (1/2)^4

t(4) = 3 (1/16)

t(4) = 3/16

So in general

t_n = t_n-1 * 1/2

For example t(5)

t_5 = t_4 * 1/2

t_5 = 3 /16 * 1/2 = 3/32

6 0
3 years ago
An article is bought and sold with a profit of 25% of selling price.find the profit percent​
Viefleur [7K]

Answer:33 1/3%

Step-by-step explanation:

7 0
2 years ago
Main Idea: To evaluate an exponential growth or decay function, substitute a value for the exponent variable and simplify.
Helen [10]
If there is more to the answer than what I give please ask for more!

With F(x) = 3^{x} we can find F(4) by substituting 4 into the main function.

So it would look like this: F(4) = 3^{4} = 3*3*3*3 = 81

Hope this helps!
3 0
3 years ago
When the coordinates (1,1) (7,3) (8,0) and (2,-2) are joined which shape is formed ?
likoan [24]

Answer:

A rectangle.

Step-by-step explanation:

To graph the points find their pairs on a graph and leave a mark in so area. Eventually, it'll reveal the shape.

Hope this helps,

Davinia.

4 0
3 years ago
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