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3 years ago

Solve the quadratic equation 3x^2+x-5=0

Mathematics

1 answer:

irinina [24]3 years ago

5 0

-1 ± √61 / 6. Negative 1, plus or minus square root of 61 divide by 6

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19 hundred-thousandths19

Rama09 [41]

Answer:

.00019

Step-by-step explanation:

.00019

first 0: tenths

2nd 0: hundredths

3rd 0: thousandths

4th 1: ten thousandths

5th 9: hundred thousandths

8 0

3 years ago

3) Washing your hands kills germs. If there are 275 germs chilling on your hands and

Romashka [77]

Answer:

So we can use geometric progression each time multiplying by 0.0475

so thats (275*0.0475)*10

So that means that we would get

130.625 so we subtract that from 275

275-130.625=144.375

That would be

Step-by-step explanation:

4 0

3 years ago

MARKING BRAINLIST! PLEASE HELP!

Leviafan [203]

Answer:

$\boxed {\boxed {\sf C. \ 4 \ inches}}$

Step-by-step explanation:

Circumference is the perimeter of a circle. It can be found using the formula:

$c= \pi d$

However, we are given the radius.

The radius measures from the center to the edge of the circle.
The diameter measures from edge to edge through the center.
So, the diameter is twice the radius, or d=2r

The formula can be rewritten as:

$c= \pi 2 r$

We know the circumference is 25.12 inches.

$25.12 \ in = \pi 2r$

Let's round pi to 3.14

$25.12 \ in = (3.14) 2r$

We want to solve for the radius, so we must isolate it.

Divide both sides by 3.14 because the inverse of multiplication is division.

$25.12 \ in / 3.14= (3.14 ) 2r / 3.14$

$8 \ in = 2r$

Divide both sides by 2.

$8 \ in / 2 = 2r/2$

$4 \ in = r$

The radius of the disc is 4 inches.

6 0

3 years ago

Write two subtraction equations to show 15-7.

kirill [66]

15 - 7 = 8
15 - 7 - 0 = 8

7 0

3 years ago

X=2t/t^2 +1 and y=2t/t^2 +1 Find dy/dx

zhenek [66]

Answer:

dy/dx=1

Hope this helps! Please vote brainliest! :)

7 0

3 years ago