One grain of this sand approximately weighs 7 x 10^-5 g. How many grains of sand are there in 6300 kg of sand ? Give your answer in standard form
Answer:
90 000 000 000 Grains
Step-by-step explanation:
one grain equal approximately 0.00007 grams.
convert 6300 kg into grams (multiply by 1000) and that equals 6 300 000g.
divide that by the weight of a single grain and you get the number of grains in that weight. So 6300000/0.00007=90 000 000 000 grains.
The number of grains of sand are there in 6300 kg of sand is 90,000,000.
What is scientific notation?Scientific notation is a method for expressing a given quantity as a number having significant digits necessary for a specified degree of accuracy, multiplied by 10 to the appropriate power such as [tex]1.56\times10^7[/tex].
Given that, one grain of this sand approximately weighs [tex]7\times10^{-5}[/tex] g.
6300 kg of sand
Number of grains = [tex]\frac{6300}{7\times10^{-5}}[/tex]
= [tex]900\times10^5[/tex]
= 90,000,000
Therefore, the number of grains of sand are there in 6300 kg of sand is 90,000,000.
To learn more about the Scientific notation visit:
https://brainly.com/question/18073768.
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Write 5.2 . 10-2 in standard form.
Answer: 5.2×103. = 5.2×1000. = 5200
Step-by-step explanation:
can someone please help me with this
Answer:
3. How many faces do each of the following have?
cube - 6 facessquare pyramid - 5 facestriangular pyramid - 4 facespentagonal pyramid - 6 facesHope this helps!
Peter has 4 more candies than Jude. The two have a total of 30 candies. How many candies does Peter have? How many candies does Jude have?
( Using Linear Systems of Equation Substitution/ Elimination)
Answer:
jude:13 peter:17
Step-by-step explanation:
x is jude
x+x+4=30
2x+4=30
2x=26
x=13
finding peter's amount of candy:
13+4=17
find the square root of 20 upon 121
Answer:
heres the square root of 20 4.47214 but i dont know what else to do for this answer. (sorry)
Step-by-step explanation:
√20 = √(4 * 5) = √4 * √5 = 2√5 ≈ 4.47214
A car dealership increased the price of a certain car by 11%. The original price was $45,400.
Answer:
$49,527.27273 or $49,527
Step-by-step explanation:
45,000/11
$4,127.272727 or $4,127
$45,400 + $4,127
$49,527
Solve for X Please show your work.
(x+3)/(x^2-9)=(2x+7)/(x^2+2x-15)
Thank you
What should be done first to evaluate the expression?9 - 4 ÷ 5 + 3 × 6
ANSWER:
24
STEP- BY-STEP-EXPLANATION:
•Group into bodmas
•9-4=5(5+3×6)
5÷5+3×6
1+3×6
4×6=24
Which is greater 1.44 or 1.2544
Answer:
1.44
Step-by-step explanation:
Answer:
1.2544
Step-by-step explanation:
It is closer to 1 than the latter.
plz help thisnif for a grade!. The tape diagram below represents how much time you and your friend spend time studying. You study for 45 minutes how many minutes does your friend study
helppppppppppppppppppmeeeeeeeeeeeeeeeeeeeeeeeeee
I divided 56 by 4 to see how much per CD Brad payed. This got me $14. $42 divided by $14 is $3, so he can buy 3 CDs.
Answer:
3
Step-by-step explanation:
For each CD:
$56÷4=$14
Therefore for $42,
$42÷$14=3
Brad can purchase 3 CD'S.
Hope this helps!
Hope this helps!please mark BRAINLIEST.
Find the sum of -8x^2+3 and -9x^2+3x-3
Answer:
-16x, and 3(x−28)
Step-by-step explanation:
-8x^2+3=-16,
Multiply 2 times −8.
which should get you −16x^2−1
Subtract 1 from 2, then you have −16x^1. For any term t, t ^1=t. so then it is -16x.
−9 ^2+3x−3
Calculate 9 to the power of 2 and get 81.
−81+3x−3
Subtract 3 from −81 to get −84.
=−84+3x
and if you need help with algebra https://mathsolver.microsoft.com/ will help!
If a student has a monthly income of about $250, how much do you predict he might spend on clothing in a month?
Answer: depends if there like someone like me 550 but if there responable then probaly 50-80
Step-by-step explanation:
what is 5/100 written in decimal
Answer:
0.05
Step-by-step explanation:
Hope it helps:)
Simplify as far as possible.
√108 − 2 √300
Answer:
√108 − 2 √300
6v√3 − 20√3
Which inequality best represents that icecream at -3⁰C is cooler than icecream at 1⁰C?
Answer:
Ice cream at -3 c is cooler than 1 C therefore since you are looking to know which one is cooler > would be the best option.
Step-by-step explanation:
Have a wonderful day!
| 4x-13 | = 5x+4
Solve
Answer:
x = 1
Step-by-step explanation:
The absolute value always gives a positive value. However, the expression inside can be positive or negative , so
4x - 13 = 5x + 4 ( subtract 4x from both sides )
- 13 = x + 4 ( subtract 4 from both sides )
- 17 = x
OR
- (4x - 13) = 5x + 4 , simplify left side
- 4x + 13 = 5x + 4 ( subtract 5x from both sides )
- 9x + 13 = 4 ( subtract 13 from both sides )
- 9x = - 9 ( divide both sides by - 9 )
x = 1
As a check
Substitute these values into the equation and if both sides are equal then they are solutions.
x = - 17
left side = | 4(- 17) - 13 | = | - 68 - 13 | = | - 81 | = 81
right side = 5(- 17) + 4 = - 85 + 4 = - 81 ≠ 81
Then x = - 17 is an extraneous solution
x = 1
left side = | 4(1) - 13 | = | 4 - 13 | = | - 9 | = 9
right side = 5(1) + 4 = 5 + 4 = 9
Then solution is x = 1
Kristal was writing 5,060 in scientific notation. She said that it was 5.6 x 10^3 do you agree or disagree
Answer:
I disagree
Step-by-step explanation:
It is 5.06 x 10^3
[tex]\sf x-5=16[/tex]
Answer:
x=21
Step-by-step explanation:
[tex]x-5=16[/tex]
[tex]x-5+5=16+5[/tex] (Add 5 to bth sides)
[tex]x=21[/tex]
HELP PLSSS THIS IS HARD SOMEONEEE
Answer:
2 option
Step-by-step explanation:
mark me as brainliest
Answer:
Oh Im so Sorry But U Can Do It
Solve for x step by step
Answer:
n=11
Step-by-step explanation:
n+5/-16=-1, multiply both sides by -16
n+5=16, subtract 5 from both sides
n=11
Help please.............................................................
Answer:
the third one
Step-by-step explanation:
The line passes through the point
28-(3x+4)=2(x+6)+x How would you solve this??? Please add step by step explanation
Answer:
x = 2
Step-by-step explanation:
or
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
c 35 84
length is 84
c 35 is hypotenuse
equals 120 neareast tenth
Cual es la constante de proporcionalidad de 1/2 ?
Answer:
Therefore, the relationship given in the table is proportional. When we look at the above table when x gets increased, y also gets increased, so it is direct proportion. Substitute 2 for x and 1 for y. So, the constant of proportionality is 1/2.
A linear function has a slope of 8/3 and passes through the point (0,5). What is the equation of the line?
This problem already gave us the slope and y-intercept, so all that's left to do is plug those two values into slope-intercept form.
Slope-Intercept Form: y = mx + b
---m is the slope
---b is the y-intercept
y = 8/3x + 5
Hope this helps!! :)
y = 8/3x + 5
hope this helps !! :)
Can someone help me??
Answer:
it would be 60
Step-by-step explanation:
the angle b would be 40 since the one next to it is 140 and then 80 and 60 make 120 and then 180 - 120 is 60 for your answer
Find the x- and y-intercepts for : 4y-6x = 24
Answer:
y-intercept = (0, 6)
x-intercept = (-4, 0)
Step-by-step explanation:
The y-intercept is the point on the graph where it crosses the y-axis, and has coordinates (0, b). It is also the value of y when x = 0.
To find the y-intercept, set x = 0:
4y - 6x = 24
4y - 6(0) = 24
4y = 24
4y/4 = 24/4
y = 6
Therefore, the y-intercept is (0, 6).
The x-intercept is the point the graph where it crosses the x-axis, and has coordinates (a, 0). It is also the value of x when y = 0.
To find the x-intercept, set y = 0:
4(0) - 6x = 24
0 - 6x = 24
-6x/-6 = 24/-6
x = -4
Therefore, the x-intercept is (-4, 0).
multiplicative inverse of 7 raised to -2
Answer:
The multiplicative inverse of 7 raised to - 2 is 72. Not actual 72 but 7 to the second power.
Step-by-step explanation:
Select all of the number of ways in which a line
and a circle can intersect.
Answer:
0, 1, 2
Step-by-step explanation:
Hi there!
0
It is possible for a line and a circle to not intersect at all.
1
It is also possible for a line and a circle to meet at one point only. They would be tangent to each other and touch.
2
Finally, it is possible for a line to intersect the circle. They would appear overlapping. In any of these cases where a line intersects a circle, they would have crossed the circle at two points.
3
A line and a circle can only have a total number of 2 intersection points.
I hope this helps!