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lesya [120]
3 years ago
6

Whats the answer and why?

Mathematics
1 answer:
san4es73 [151]3 years ago
6 0

A) -13

Bcz

x^2-13x+12=0

x^2-x-12x+12=0

x(x-1)-12(x-1)=0

(x-1)(x-12)=0

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Find the volume of a sphere if its radius is 6 cm. Use estimation for pi.
Viefleur [7K]
Volume is calculated by multiplying (3/4)pi by the radius cubed

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2 years ago
Solve the expression (7th grade math):<br><br> -0.8m+3-12.5m+95.36m
Lana71 [14]

Step-by-step explanation:

<u>Combine Like-Terms:</u>

-0.8m + 3 - 12.5m + 95.36m

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82.06m + 3

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7 0
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How many solutions does 3x = 2x + 4 have
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One Solution: x = 4

Step-by-step explanation:

Step 1:

3x = 2x + 4            Equation

Step 2:

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Hope This Helps :)

6 0
2 years ago
Choose the model that represents the function
kirill [66]

Answer:

OPTION D

Step-by-step explanation:

We have to determine which option determines the function given above.

To determine the function, just substitute the values and compare LHS and RHS.

we have $ f(4) = 18 $

$ f(-2) = -12 $

$ f(0) = -2 $

$ f(-3) = -17 $

Here, $ x $ is the domain and $ f(x) $ is the co-doamin.

Therefore, $ x = \{4, -2, 0, -3\} $

Now, OPTION A: $ f(x) =  2x - 5 $

Substitute x = 4. We get f(x) = 3 $ \ne $ 18.

So, OPTION A is rejected.

Similarly, OPTION B: $ f(x) = 5x + 2 $

Substitute x = 4. We get f(4) = 22 $ \ne $18.

It is rejected as well.

Now, for OPTION C: $ f(x) = \frac{x}{2} - 5 $

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So, OPTION C is also rejected.

OPTION D: $ f(x) =  5x - 2 $

Substitute x = 4. We get f(4) = 18.

Substitute the remaining points in domain as well. We notice that it exactly matches the given function. So, OPTION D is the answer.

8 0
3 years ago
Which ordered pair is not a solution of f(x) = 2x + 9? (0, 9) (7, 23) (3, 14) (2, 13)
12345 [234]
(3,14) because when you plug in the x and y values you don’t end up with a true statement.
F(x)=2(3)+9
F(x)=6+9
F(x)=15
14 does not equal 15
4 0
3 years ago
Read 2 more answers
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