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Basile [38]
2 years ago
14

The value of a stock increased by $4.90, and then decreased by $7.35. What was the net change in value of the stock?

Mathematics
1 answer:
Ronch [10]2 years ago
6 0

Answer: -$2.45

Step-by-step explanation:

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Tony bought 48 roses for $24. How much do 24 roses cost
kondor19780726 [428]
We know that:
48 roses costs $24
24 roses costs ?$
Step 1:
Use cross multiply
24×24=576
Last step:
Use division
576÷48=$12, so 24 roses costs $12. As a result, 24 roses costs $12. Hope it help!
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3 years ago
Please answer this question
PolarNik [594]

Answer:

9

Step-by-step explanation:

(-1)^4-(-1)^3+(-1)^2+6

1-(-1)+1+6

1+1+1+6

3+6=9

6 0
3 years ago
Read 2 more answers
15
dimulka [17.4K]

Answer:

15) Ellen is 12 years old.

16) Don't know what value you are looking for but x=(17/4) while y=(7/4) since the set of equations is 2x-2y=5 and x+y=6.

Step-by-step explanation:

15) Ellen (E) is currently twice as old as Maria (M).

Twice means to multiply by 2.

E=2M is therefore the equation for this part of the problem.

In 6 years, Maria (M) will be 2/3 as old as Ellen (E).  Keep in my Maria as aged 6 years (M+6) and Ellen as aged 6 years (E+6):

M+6=(2/3)(E+6).

So we have this system to solve:

E=2M

M+6=(2/3)(E+6).

I'm going to replace the E in the second equation with 2M since the first equation says E=2M:

M+6=(2/3)(E+6) with E=2M:

M+6=(2/3)(2M+6)

Distribute:

M+6=(4/3)M+(12/3)

Reducing 12/3 to 4:

M+6=(4/3)M+4

Subtract 4 on both sides:

M+2=(4/3)M

Subtract M on both sides:

2=(4/3)M-M

Find a common denominator:  

2=(4/3)M-(3/3)M

Combine like terms:

2=(1/3)M

Multiply both sides by the reciprocal of 1/3 which is 3:

3(2)=3(1/3)M

6=1M

6=M

M=6

Maria is six years old.

Recall E=2M.

So if M=6, then E=2(6)=12.

So currently E is twice as old as M since 6(2)=12.

In six years, M will be 12 which E will be 18.

M (12) is two-thirds as old as E (18) since 12=2/3(18)

16)

2x-2y=5

 x + y=6

Your question doesn't state which value it is looking for.

Anyways I'm going to solve the system for the point (x,y) and then you can decide which part of this answer to use.

I'm going to solve this system by elimination.  Each equation already has the same form: ax+by=c. I just need a column with the variables to be opposite or the same.

I'm going to multiply both sides of equation 2 by 2:

2x-2y=5

2x+2y=12

Now I have opposites in a column: -2y and 2y.

When you add opposites you get 0 so this is what you want to use elimination.

We are going to add the equations now:

2x-2y=5

2x+2y=12

------------------Adding!

4x+0y=17

4x      =17

Divide both sides by 4:

 x      =17/4

Now if x=17/4 and x+y=6, then we have that (17/4)+y=6.

Subtracting 17/4 on both sides gives us y=6-(17/4).

Finding a common denominaotr gives us y=(24/4)-(17/4).

Simplifying this gives us y=(7/4).

The point of intersection (the solution) is (17/4 ,  7/4)

7 0
3 years ago
How to constructed a square polygon
pogonyaev

Answer:

Construct a square of side length 4 cm

Step-by-step explanation:

* Lets explain how to construct a square polygon with side length 4 cm

- Use your straightedge to draw a horizontal line

- Measure on the horizontal line a segment of 4 cm

- Label its endpoints by A and B (AB = 4 cm)

- Open your compass at a distance greater then half AB (3 cm)

- Put the pin of the compass at point B and draw an arc intersects AB

 at point E and the horizontal line at point F

- Open the compass at a distance greater than the length of the side

 of the square (6 cm) and put its pin on the point E and draw an arc

- Put the pin of the compass on the point F without changing the open

 of the compass and draw another arc

- The two arcs intersect each other at point G

- Join BG and measure 4 cm from point B and label the end point of

 the 4 cm by C

- Open your compass at a distance 4 cm and put the pin on point C

 and draw an arc and put it on point A with the same distance 4 cm

 and draw another arc, the two arc intersect each other at point D

∴ ABCD is a square of side length 4 cm

# Look to the attached figure to more understand

5 0
3 years ago
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