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Mamont248 [21]
3 years ago
7

Through research scientists found that the body or a 200 lb person consist of 3.2*10 to the nigetive five lbs of zinc. In the bo

dies on 1500 such people, how much zinc is present?
"Should i divide or add???"
Mathematics
1 answer:
denis-greek [22]3 years ago
8 0
In 1500 people of 200 lb each, the total weight would be 300000 lb.
Set up a proportion: 200lb/3.2*10^-5 = 300,000lb/x
(3.2*10^-5*300,000)/200 = x
x = 0.48, I believe
You might be interested in
Transforma in metri:
s2008m [1.1K]

Answer:

a) 70 m

b) 35 m

c) 57 m

d) 500 m

e) 7.5 m

f) 57 m

Step-by-step explanation:

10 dm = 100 cm = 1 m.

1 dam = 10 m

1 km = 1000 m

100 cm = m

Correct ☑ ✔ Question :-

Transform in metre

a) 7 dam

b) 350 dm

c) 57000 mm

d) 0.5 km

e) 750 cm

f) 5.7 dam

<h3>Solution ✔</h3>

a) 7 dam

1 dam = 10 m

so, 7 dam = 7 × 10 m = 70 m

b) 350 dm

10 dm = 1 m

so, 350 dm = 350/10 = 35 m

c) 57000 mm

1000 mm = 1 m

so, 57000mm = 57000/1000 = 57 m

d) 0.5 km

1 km = 1000 m

0.5 km = 1000 × 0.5 = 500 m

e) 750 cm

100 cm = 1 m

750 cm = 750/ 100 = 7.5 m

f) 5.7 dam

1 dam = 10 .

5.7 dam = 5.7 × 10 = 57 m

7 0
3 years ago
Number 3 please solve and explain
allochka39001 [22]

Answer: -12.5

Step-by-step explanation:

x(2y-3) and x=2.5 and y=-1

so you fix in the figures so it will turn to

2.5(-2-3)

so then you open the brackets with 2.5

-5-7.5

Answer: -12.5

8 0
3 years ago
What is the approximate length of the hypotenuse of a right triangle with vertices (-6, 2),
muminat

Answer:

Step-by-step explanation:

A(-6, 2),   B(6,-3) and C(-6, -3)

AB² =  (x₂ - x₁)² + (y₂ - y₁)²

      = ( 6 -[-6])² + ( -3 -2)²

      = ( 6 + 6)² + ( -3 -2)² = 12²  + (-5)²  = 144 + 25 =169

AB = √169 = 13 units

BC²  = ( -6 -6)²  + ( -3 - [-3])² = (-6-6)²  + (-3 +3)²

      = (-12)²  + 0  = 144

BC = √144 = 12 unis

CA²  = (-6 - [-6])²  +(-3-2)²  = (-6 + 6)²  + ( -3-2)²

         = 0 + (-5)²  = 25

CA =√25 = 5 units

length of the hypotenuse of a right triangle  = 13units

4 0
3 years ago
The base of a triangle is twice of its hypotenuse.the sin of angle opposite to base is..?
beks73 [17]

Answer:

hey,

ur question is wrong,

base of triangle can never be longer than hypotenuse,and you have told base is twice of hypotenuse,

if hypotenuse is twice of base, then solution is give below, in picture,

and answer is 1/2

3 0
2 years ago
D= 5, -2, 1 e= 1, 2 Multiply matrix D by matrix E. pleeeeaaasssee help me please please please
Zepler [3.9K]
Multiply D×E. Which is 1×5. And subtracte 2
3 0
3 years ago
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