How much will be left after 24 hrs if it’s half life is 6 hours?

Mathematics

1 answer:

Ket [755]3 years ago

6 0

The quantity remaining will be
.. 448*(1/2)^(24/6) = 448/16 = 28 . . . . grams

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Find (y) 2x+0,4y= 9 x=2,3

yarga [219]

Answer:

9y 2x+0,4y=9 4=2,3

Step-by-step explanation:

7 0

3 years ago

Can u guys please answer these questions

aliya0001 [1]

Answer:

Im not sure about Q1 but I'll help with Q2

9 =

$\sqrt{81}$

8 =

$\sqrt[3]{512}$

14 =

$\sqrt{196}$

2 =

$\sqrt[3]{8}$

4 =

$\sqrt{16}$

I hope this helps :)

If you would like me to, i will respect your wishes and delete my answer.

8 0

3 years ago

On a coordinate plane, a shape is plotted with vertices of (3, 1), (0, 4), (3, 7), and (6, 4). what is the area of the shape if

QveST [7]

Let
A (3, 1)
B (0, 4)
C(3, 7)
D (6, 4)

step 1
find the distance AB
d=√[(y2-y1)²+(x2-x1)²]------> dAB=√[(4-1)²+(0-3)²]-----> dAB=√18 cm

step 2
find the distance CD
d=√[(y2-y1)²+(x2-x1)²]------> dCD=√[(4-7)²+(6-3)²]-----> dCD=√18 cm

step 3
find the distance AD
d=√[(y2-y1)²+(x2-x1)²]------> dAD=√[(4-1)²+(6-3)²]-----> dAD=√18 cm

step 4
find the distance BC
d=√[(y2-y1)²+(x2-x1)²]------> dBC=√[(7-4)²+(3-0)²]-----> dBC=√18 cm

step 5
find slope AB and CD
m=(y2-y1)/(x2-x1)
mAB=-1
mCD=-1
AB and CD are parallel and AB=CD

step 6
find slope AD and BC
m=(y2-y1)/(x2-x1)
mAD=1
mBC=1
AD and BC are parallel and AD=BC
and
AB and AD are perpendicular
BC and CD are perpendicular

therefore
the shape is a square wit length side √18 cm

area of a square=b²
b is the length side of a square
area of a square=(√18)²------> 18 cm²

the answer is
18 cm²

see the attached figure