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3 years ago

Please help!! What is the solution to 2x^2+x+2=0?

Mathematics

1 answer:

Aliun [14]3 years ago

8 0

Answer:

your 3rd option

Step-by-step explanation:

$\frac{-1+/-\sqrt{1-4(2)(2} )}{2(2)}$

${\frac{-1+/-\sqrt{1-16} }{4}}$

${\frac{-1+/-\sqrt{-15} }{4}}$

${\frac{-1+/-i\sqrt{15} }{4}}$

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7 1/7 divided by 5 1/5

vladimir1956 [14]

Well first turn 1/7 and 1/5 into decimals which would be .142857 and .2 Add those to 7 and 5 to get 7.143 (I rounded this to the nearest thousandth) and 5.2 Divide those and you get 1.374

5 0

3 years ago

The pendulum swings at an arc of 30 cm and its successive swings reduced to 10% of the previous swings. What is the total distan

OleMash [197]

Answer:

$S_g= 33.333cm$

Step-by-step explanation:

From the question we are told that

Arc of 30 cm

10% reduction after each swing

Generally sum of geometric sequence is given by the equation

$S_g=\frac{a(1-r^n)}{1-r}$

Mathematically solving for total distance traveled we have

$S_g=\frac{30(1-(0.10^5)}{1-(0.10)}$

$S_g=\frac{30}{0.9}$

Therefore the total distance traveled by the pendulum after 5 swings

$S_g= 33.333cm$

3 0

3 years ago

10/21 + ( 2/3 - 1/7 ) =

Marizza181 [45]

Simplify 2/3 - 1/7 to 11/21
10/21 + 11/21
Simplify
The answer is 1.

7 0

3 years ago

Read 2 more answers

Help it’s my last question

Digiron [165]

Answer:

alr so basically what you want to do is multiply the numbers to get the answer

Step-by-step explanation:

6 0

2 years ago

Josh has three shelves of soccer trophies there are five shelves

motikmotik

Do you mean he had 3 shelves and 5 on each? If so the answer is 15

3 0

3 years ago