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frozen [14]
4 years ago
13

-x+4(x+3)=-12is this never true or always true

Mathematics
1 answer:
rodikova [14]4 years ago
7 0

Answer: Never true.


Step-by-step explanation: Distribute the numbers: 4 times x is 4x, 4 times 3 is 12. Then you have the equation: -x+4x +12 = -12. Now, choose a random number, maybe -4. A negative plus a negative cancels out so you are left with 4-16(Because you distribute the number) +12 = -12. 4-16 is -12. -12 plus 12 equals 0.

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Increase £120 by 25%​
alekssr [168]
120 * 0.25 = 30
120 + 30 = £150
6 0
3 years ago
Two students in your class, Hunter and Maggie, are disputing a function. Hunter says that for the function, between x = −2 and x
dangina [55]
So basically, if it goes up then back down to the same level, the change is 0 since it is like, running 100 feet west, then running 100 feet east, you are at your original spot, your positino did not change

maggie is explaing what hunter is saying


7 0
3 years ago
Read 2 more answers
Prove that the medians to the legs of an isosceles triangle are congruent.
Vilka [71]

Step-by-step explanation:

Let ABC be an isosceles triangle with sides AC and BC of equal length.                

We need to prove that the medians AD and BE are of equal length.

Consider the triangles ADC and BEC.

They have two congruent sides that include congruent angles.

Indeed, AC = BC by the condition, because the triangle ABC is isosceles.

Since the lateral sides AC and BC are of equal length, their halves EC

and DC are of equal length too: EC = DC.

Finally, the angle ECD is the common angle.

Thus, the triangles ADC and BEC are congruent, in accordance to the

postulate P1 (SAS) (see the lesson Congruence tests for triangles of the

topic Triangles in the section Geometry in this site).

Hence, the medians AD and BE are of equal length as the corresponding sides

of these triangles.

The proof is completed.

8 0
3 years ago
PLEASE HELP ASAP!!!!!!!!!!!! 50% of my grade<br><br>NO FAKE ANSWERS!!!!!!!!!!!!
photoshop1234 [79]

i can confirm this answer is not indeed fake

7 0
3 years ago
A triangle has sides with lengths of 6 yards, 8 yards, and 10 yards. Is it a right triangle?
yaroslaw [1]

Answer:

Step-by-step explanation:

so, by the Pythagorean theorem

If it is a right triangle:

a^2 + b^2 = c^2

so,

6^2 = 36

8^2 = 64

10^2 = 100

okay, now we plug these into the equation

36 + 64 = 100

so yes, it is a right triangle.

Hope this helped!

5 0
4 years ago
Read 2 more answers
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