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frez [133]
3 years ago
12

15-12 divided by 3=n

Mathematics
1 answer:
Alona [7]3 years ago
5 0

Answer:

n=11

Step-by-step explanation:

Solve for n by simplifying both sides of the equation, then isolating the variable.

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Factor 4x squared-35x+4
ANEK [815]
4x^2-35x+4\\\\a=4;\ b=-35;\ c=4\\\\\Delta=b^2-4ac\to\Delta=(-35)^2-4\cdot4\cdot4=1225-64=1161\\\\x=\frac{-b\pm\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{1161}=\sqrt{9\cdot129}=3\sqrt{129}\\\\x=\frac{-(-35)\pm3\sqrt{129}}{2\cdot4}=\frac{35\pm3\sqrt{129}}{8}\\\\4x^2-35x+4=4\left(x-\frac{35-3\sqrt{129}}{8}\right)\left(x-\frac{35+3\sqrt{129}}{8}\right)
8 0
2 years ago
If AB = 10, AD = 8, and AE = 12, what is the<br> length of EC?
Karolina [17]

Answer:

AB is 16 units.

Step-by-step explanation:

Given:

AE = EC

BF = FC

EF = 8 and DF = 10

To Find:

AB = ?

Solution:

Mid Point Theorem:

The Midpoint Theorem states that "the segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side".

AE = EC .....Given

Therefore E is the Mid Point of AC.

BF = FC .....Given

Therefore F is the Mid Point of BC.

Therefore,

EF || AB            ........................Mid Point Theorem.

         ..............Mid Point Theorem.

Substituting the values we get

Therefore AB is 16 units.

Step-by-step explanation:

6 0
3 years ago
A pizza parlor sold 38 1/2 pizzas during a dinner hour. If each pizza contained 8 slices, how many slices of pizza were sold?
MArishka [77]
308 slices would be sold.
38*8= 304, plus 4 slices in half a pizza makes 308 slices.
8 0
2 years ago
Read 2 more answers
Sam says 90 ÷ (–9) = 10. Is he correct? Use the drop–down menus to explain your answer.
SashulF [63]

Answer:

No.

Step-by-step explanation:

Sam is incorrect because if you look at the original problem, you'll see that he has missed the negative sign!

90 / 9 does equal 10, but 90 / -9 equals -10.

The only way to get a positive answer is if both the divisor and dividend are positive or if they are both negative.

Thus, the correct answer should be -10.

3 0
3 years ago
What is 3.1 - 4.9(x + 1)
liq [111]

Answer:

-49x - 18 is the final answer!

5 0
3 years ago
Read 2 more answers
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