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Ksenya-84 [330]
3 years ago
12

When a number is written in scientific notation, could zero ever be in the ones place of the first factor? Which digits, if any,

would never be in the ones place?
Mathematics
1 answer:
makkiz [27]3 years ago
3 0
No there couldn't and there is none
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Three apples and 2 oranges cost $1.25, while 2 apples and an orange were 75 cents. At the rate, find the cost of 6 apples and an
Effectus [21]
X - apple
y - orange

3x+2y=1.25\\
2x+y=0.75\\\\
3x+2y=1.25\\
-4x-2y=-1.5\\
--------\\
-x=-0.25\\
x=0.25\\\\
2\cdot0.25+y=0.75\\
0.5+y=0.75\\
y=0.25\\\\
6x+y=6\cdot 0.25+0.25=1.5+0.25=\boxed{1.75}
3 0
3 years ago
A garden is designed in the shape of a rhombus formed from 4 identical 30°-60°-90° triangles. The shorter distance across the mi
g100num [7]
legs of the triangles

Each triangle 30-60-90 is:

         one leg: 15 ft => short diagonal = 2 * 15ft = 30ft

         other leg, x:

         tan(30) = 15 / x => x = 15 ft / tan(30) = 25.98 ft

=> long diagonal = 2 * 25.98ft = 51.96 ft

side of the rhoumbus =  hypotenuse of one triangle

side of the rhombus = √ [ (15)^2 + (25.98)^2 ] = √(900) = 30 ft

Area of the rhombus:

4 * area of one triangle = 4 [base*height/2] = 4*15*25.98/2 = 779.43 ft^2

The shortest distance accross the garden is equal to the side of the rhombus = 30 ft


5 0
4 years ago
Read 2 more answers
Can someone please help . Thank you !! :)
antoniya [11.8K]

Answer:

1000 years

Step-by-step explanation:

1x10^11 is basically 100 billion

1x10^8 is basically 100 million

so 100 billion divided by 100 milllion is basically 1000

so 1000 years

3 0
3 years ago
Harry bought 25 pens for 1.00. Find the unit rate
lara31 [8.8K]

Answer:

4 cents

Step-by-step explanation:

1.00 divied by 25 =0.04 aka 4 cents

6 0
3 years ago
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Answer please.. Thank you in advance
sergeinik [125]
Picture is in correct
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3 years ago
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