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2 years ago

(3+6)÷(-3)^2 help !!!!!

Mathematics

2 answers:

Serjik [45]2 years ago

5 0

Your answer would be 1...

Alexandra [31]2 years ago

5 0

It should come out to one

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Write the decimal 1.822 as a fraction. Do not write in lowest terms.

Degger [83]

Answer to your problem is:

1 411/500

I believe XD.

5 0

2 years ago

Find the area of this circle use 3.14 or 22/7 or pie round your answer to the nearest hundred if necessary

notka56 [123]

Answer:

The area of the circle is 50.24 mm ²

Step-by-step explanation:

To solve this exercise we need to use the area formula of a circle:

a = area

r = radius = 4mm

π = pi = 3.14

a = π * r²

a = 3.14 * (4mm )²

a = 3.14 * 16mm ²

a = 50.24 mm ²

The area of the circle is 50.24 mm ²

6 0

2 years ago

If a/b < c/d with b > 0, d > 0, prove that a+c / b+d lies between the two fractions a/b and c/d .

Tems11 [23]

Divide through everything by b :

$\dfrac{a+c}{b+d} = \dfrac{\dfrac ab + \dfrac cb}{1 + \dfrac db}$

Since a/b < c/d, it follows that

$\dfrac{a+c}{b+d} < \dfrac{\dfrac cd+\dfrac cb}{1 + \dfrac db}$

Multiply through everything on the right side by b/d to get

$\dfrac{a+c}{b+d} < \dfrac{\dfrac{bc}{d^2}+\dfrac cd}{\dfrac bd+1} = \dfrac{\dfrac cd\left(\dfrac bd+1\right)}{\dfrac bd+1} = \dfrac cd$

and so (a + c)/(b + d) < c/d.

For the other side, you can do something similar and divide through everything by d :

$\dfrac{a+c}{b+d} = \dfrac{\dfrac ad + \dfrac cd}{\dfrac bd + 1}$

and a/b < c/d tells us that

$\dfrac{a+c}{b+d} > \dfrac{\dfrac ad + \dfrac ab}{\dfrac bd + 1}$

Then

$\dfrac{a+c}{b+d} > \dfrac{\dfrac ab + \dfrac{ad}{b^2}}{1 + \dfrac db} = \dfrac{\dfrac ab\left(1+\dfrac db\right)}{1 + \dfrac db} = \dfrac ab$

and so (a + c)/(b + d) > a/b.

Then together we get the desired inequality.

5 0

2 years ago

My number is an even number. my number is greater than 7,200. My number is?

hjlf

Answer:

for the even number your answer would be 7,316

Step-by-step explanation:

an even number always needs to end with an even number

7 0

2 years ago

Jillian exercises 5 times a week. She runs 3 miles each morning and bikes in the evening. If she exercises a total of 30 miles a

alexgriva [62]

Jillian bikes a total of 30 miles in 5 days, then we divide 30 and 5 to get 6. Jillian bikes 6 miles per day.

6 0

2 years ago