2 years ago

Solve by factoring. x^2 - 49 = 0

Mathematics

1 answer:

zvonat [6]2 years ago

4 0

The answer is (x+7)(x-7)

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Evaluate 33/5 - 1/10

azamat

Answer:

$\large\boxed{\dfrac{13}{2}=6\dfrac{1}{2}=6.5}$

Step-by-step explanation:

We have the different denominators.

The common denominator is 10.

$\dfrac{33}{5}=\dfrac{33\cdot2}{5\cdot2}=\dfrac{66}{10}$

We can subtract these fractions now.

$\dfrac{33}{5}-\dfrac{1}{10}=\dfrac{66}{10}-\dfrac{1}{10}=\dfrac{66-1}{10}=\dfrac{65:5}{10:5}=\dfrac{13}{2}\\\\\dfrac{13}{2}=\dfrac{12+1}{2}=6\dfrac{1}{2}$

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3 years ago

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13+39-2-10-6 power2 orders of operation

Advocard [28]

6 to the power of 2 is 6 multiplied by six which is 36
then 13 + 39 is 52 - 2 = 50- 10 = 40 - 36= the answer 4

8 0

3 years ago

Simplify (−6.5)(−4)(−2.8)

Flura [38]

Since there are three negative numbers your product will be negative.
6.5 * 4 = 26.0
26. * 2.8 =
208
52
------------------
72.8
Answer is -72.8

8 0

2 years ago

christa buys an alarm clock for 45% the store increases the purchase price of the clock by 150%? what is the new sales price of

Nina [5.8K]

New price = old price + 150 of old price = 45 + (150/100 X45)= 45 + 67.5 = 107.5

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3 years ago

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Find the Dot Product if u=8i-7j and v=3i-4j?

Feliz [49]

Answer:

Step-by-step explanation:

If u=(a1i+b1j)=(a1,b1) and v=(a2i+b2j)=(a2,b2), then the dot (scalar) product is:

u.v=(a1,b1).(a2,b2)

a1b1+a2b2

u.v=(8,-7).(3,−4)

(8)(3)+(-7)(−4)

24+28=52

4 0

2 years ago