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aleksklad [387]
4 years ago
13

I cannot solve this for nothing

Mathematics
1 answer:
Bas_tet [7]4 years ago
7 0
You can multiply the top equation by 3 and the bottom equation by 2, so you get:

-6y = 42
+6y = 18

(You also multiply whatever is in front but it's cut off so...)

Then you can add the equations so you get:

(whatever numbers cut off are) = 60

Then you solve for the variable cut off and sub it into one of the equations and solve for y.
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Subtract h + 3 ​​from​ 6h + 1. help me
MissTica
X subtracted from y means y-x

h+3 subtracted from 6h+1 means 6h+1-(h+3)
din't forgtet to distribute invible -1
6h+1-1(h+3)=
6h+1-h-3=
6h-1h+1-3=
5h-2
8 0
3 years ago
Solve the equation if 0° &lt; x &lt; 360° cos x = - 1/2<br>​
babunello [35]

Answer:

120° and 240°

Step-by-step explanation:

The given info about the angle x is  cos x = - 1/2.

By definition, cos x = - 1/2 = (adjacent side) / hypotenuse, so here we can assume the adjacent side is -1 and the hypotenuse is 2.

A negative cosine tells us that the angle is in Quadrant II or Quadrant III.

If x is in Quadrant II, then its value is 120°

If x is in Quadrant III, then its value is  120° + 120°, or 240°

Check:  

3 0
3 years ago
a store sells skis buys them from a manufacturer at a wholesale price of $57. the stores markup rate is 35%. what price does the
Alex787 [66]

Answer:

118.25

Step-by-step explanation:

first you find what 1 percent of 57 is

than you take that a multiply it by 35

add that to 57 and you got your number

7 0
3 years ago
What is the congruence correspondence, if any, that will prove the given triangles congruent?
spin [16.1K]

Answer:

<h3>HL</h3>

Step-by-step explanation:

The congruence correspondence between the two given triangles is HL as one leg and hypotenuse are given equal.

<u>----------------------</u>

<u>OAmalOHopeO</u>

<u>----------------------</u>

6 0
3 years ago
a sheep breeding farm counted a total of 40 sheep on their grounds after one year the number of sheep doubled then in the next y
SpyIntel [72]
Answer:
graph (b)

Explanation:
The farm started with 40 sheep and the number doubled each year.
So, the equation modeling this situation would be:
N(x) = 40*(2)^2
By getting the equation, we can notice that we already excluded the third and fourth choices as they have the wrong equations.

Now, we will need to select the right graph which is either graph a or graph b.
To do this, we will get the value of N(x) for different values of x as follows:
At x = 0: N(0) = 40*(2)^0 = 40
At x = 1: N(1) = 40*(2)^1 = 80
At x = 1: N(2) = 40*(2)^2 = 160

Now, taking a look at graph a, we will find that:
N(1) = 120
N(2) = 360
These numbers are not the same as the numbers we calculated, therefore, this graph is wrong

Taking a look at graph b, we will find that:
N(1) = 80
N(2) = 160
These numbers are exactly the same as the ones calculated, therefore, this graph is the correct one.

Hope this helps :)
7 0
4 years ago
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