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ziro4ka [17]
3 years ago
9

How many solutions does the following equation have?

Mathematics
2 answers:
ikadub [295]3 years ago
8 0

Answer:


Step-by-step explanation:

Its B No solution DID it before

Marysya12 [62]3 years ago
3 0

Answer:

b) no solution

Step-by-step explanation:

What you always want to do in this type of problem is to combine all of your "like terms," where like terms are the part of your equation that have the same variable (or no variable). In this equation, we see three terms that have the variable "z". We can add the 12z + 15z on the left side to get 27z, and then we subtract 27z on both sides to cancel both of the 27z terms out.

Now, we are left with -6 = -5   (because we got rid of all the terms with the variable z in them). We know that -6 does not equal -5, and therefore, there is no number that we can assign to variable z such that the left side of the equation will equal the right side of the equation.

Therefore, there is no solution (because a solution to the equation would be a value that we can plug into the variable z to make the equation true).

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Find the value of y.​
Bess [88]

Answer:

=6√3 the third option.

Step-by-step explanation:

We can use the Pythagoras theorem to find the value of y. We need two equations that include y.

a²+b²=c²

c=9+3=12

x²+y²=12²

x²=144 - y².........i (This is the first equation)

We can also express it in another way but let us find the perpendicular dropped to c.

perpendicular²= x²-3²=x²-9 according to the Pythagoras theorem.

y²=(x²-9)+9²

y²=x²+72

x²=y²-72....ii( this is the second equation

Let us equate the two.

y²-72=144-y²

2y²=144+72

2y²=216

y²=108

y=√108

In Surd form √108=√(36×3)=6√3

y=6√3

8 0
3 years ago
4x-14=2x please solve need help
notsponge [240]

Answer:

7

Step-by-step explanation:

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2. Divide -2 on both sides to get -14/-2 = x

3. -14/-2 = 7 so 7 = x

7 0
2 years ago
What number is 4/7 of 210
vitfil [10]

Answer:

4 / 7 of 210 is 120.

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8 0
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Read 2 more answers
You are offered two jobs selling college textbooks. One company offers an annual salary of $30,000 plus a year-end bonus of 1% o
strojnjashka [21]

Answer:

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Step-by-step explanation:

6 0
2 years ago
Miss logan leaves school at 15:55 it takes her 1 hour and 20 mins to get home what time does she arrive home? answer using 24 ho
cluponka [151]

Answer:

5:15

Step-by-step explanation:

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3:55 + 1 hr = 4:55

4:55 + 20 min = 5:15

6 0
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