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Nataliya [291]
3 years ago
14

Can someone help me, I really need help .​

Mathematics
2 answers:
Y_Kistochka [10]3 years ago
3 0
Yes I can help you with the question you have displayed
gogolik [260]3 years ago
3 0

Answer:

5) 12  6) -12  7) -6  8) 2  9) 80 degrees  10) 40 degrees

Step-by-step explanation:

:)

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All kites are squares true or false
Klio2033 [76]

Answer:

No

Step-by-step explanation:

Not all kites are a square.

8 0
3 years ago
Prove by mathematical induction that 1+2+3+...+n= n(n+1)/2 please can someone help me with this ASAP. Thanks​
Iteru [2.4K]

Let

P(n):\ 1+2+\ldots+n = \dfrac{n(n+1)}{2}

In order to prove this by induction, we first need to prove the base case, i.e. prove that P(1) is true:

P(1):\ 1 = \dfrac{1\cdot 2}{2}=1

So, the base case is ok. Now, we need to assume P(n) and prove P(n+1).

P(n+1) states that

P(n+1):\ 1+2+\ldots+n+(n+1) = \dfrac{(n+1)(n+2)}{2}=\dfrac{n^2+3n+2}{2}

Since we're assuming P(n), we can substitute the sum of the first n terms with their expression:

\underbrace{1+2+\ldots+n}_{P(n)}+n+1 = \dfrac{n(n+1)}{2}+n+1=\dfrac{n(n+1)+2n+2}{2}=\dfrac{n^2+3n+2}{2}

Which terminates the proof, since we showed that

P(n+1):\ 1+2+\ldots+n+(n+1) =\dfrac{n^2+3n+2}{2}

as required

4 0
3 years ago
Amy drove her car 241 miles. The car used 8.07 gallons of gasoline on the drive. Estimate the cars gasoline mileage in miles per
Ket [755]
Miles driven in 8.07 gallons = 241 miles
Miles driven in 1 gallons      = (241/8.07) * 1
                                            = 29.86 miles
5 0
3 years ago
Read Fred's conclusion. If the sum of the digits of a number is a multiple of 3. then the number is a multiple of 6. Which state
kolezko [41]

Answer:

the answer would be a because 42÷6=7 and 42÷3=14.

7 0
3 years ago
Please someone help me!!!! SHOW ALL WORK! ive been stuck on this question for 2 days!! :((((((
Otrada [13]

Step-by-step explanation:

x² + y² − 8x + 10y − 8 = 0

Rearrange:

x² − 8x + y² + 10y = 8

To complete the square, take half of the x and y coefficients, square it, then add the result to both sides.

(-8/2)² = 16

(10/2)² = 25

x² − 8x + 16 + y² + 10y + 25 = 8 + 16 + 25

x² − 8x + 16 + y² + 10y + 25 = 49

Factor the squares:

(x − 4)² + (y + 5)² = 49

The center is (4, -5) and the radius is 7.

6 0
3 years ago
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