Which numbers are written in scientific notation? Check all that apply.
0.87x10^8
15.489 x 10^6
O 10.1x 10^-12
07.08 x 10^6
1.2345 x 10^-1
Answers
Answer:
The last two
Step-by-step explanation:
Scientific notation:
a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8
Related Questions
Which numbers are irrational numbers?
Select each correct answer.
9√
12−−√
16−−√
20−−√
25−−√
Answers
Answer:
Square root of 12
Square root of 20
Step-by-step explanation:
An irrational number contains an infinite decimal.
All other numbers are perfect squares, resulting in whole numbers.
The square root of 9 is 3 because 3 × 3 = 9.
The square root of 12 is 3.464....
The square root of 16 is 4.
The square root of 20 is 4.472....
The square root of 25 is 5.
The circumference of a circle is best modeled by the perimeter of which regular polygon below?
Answers
Answer:
The answer is "20-gon"
Step-by-step explanation:
As the number of the sides increases the perimeters of the regular polygon go more closer to the circumference of the large circle. therefore the circumference of a circle is best moduled by the perimeter of the zo-gon as it has the maximum sides (z0) compared to hexagon (6), 15 gon(15), and Dodecagon(12).
Jose measured a small granola bar in the shape of a rectagular prism. It was 5 mm tall, 50 mm long, and 30 mm wide. He stacked the 2 granola bars on top of each other. What is the colume fot he 2 stacked granola bars
Answers
Answer:
15,000 mm^3
Step-by-step explanation:
volume of the 2 stacked granola bars = volume of one granola bar x 2
volume of one granola bar = Volume of a prism = base area x height
5 x 55 x 30 x 2 = 15,000
Please help me i'm struggling!
Answers
Answer:
y = [tex]\sqrt{x-5}[/tex]
This is the correct answer because I got it right.
Estelle hosted a banquet for her extended family that cost $480.93. Estelle paid 9.25% sales tax and left an 18% tip on $480.93. What was the total cost?
Answers
Answer:
$563.89: total cost of the banquet
Step-by-step explanation:
Here we can to find the total cost, including tax and tip, by adding 9.25% and 18% together first. We obtain 17.25%, which translates into the decimal fraction 0.1725 and results in the amount added to the original cost, $480.93. The result is added to $480.93:
1.0000($480.93) + 0.1725($480.93) = $563.89
A shortcut would be to find the total cost, including the original $480.93 and the additional 17.25%, by multiplying $480.93 by 1.1725:
1.1725($480.93) = $563.89: total cost of the banquet
Consider the following statement. If r is any rational number and s is any irrational number, then r s is irrational. (a) Which of the following is a negation for the statement? If r is any rational number and s is any irrational number, then r s is rational. If r is any irrational number and s is any rational number, then r s is irrational. There is a rational number r and an irrational number s such that r s is irrational. There is a rational number r and an irrational number s such that r s is rational. (b) What are some values of r and s for which the given statement is false (that is, for which its
Answers
Answer:
(a) If r is any rational number and s is any irrational number, then r/s is rational
(b) The statement is false when r is 0
Step-by-step explanation:
Given
[tex]r \to[/tex] rational number
[tex]s \to[/tex] irrational number
[tex]\frac{r}{s} \to[/tex] irrational number
Solving (a): The negation
To get the negation of a statement, we only need to negate the end result
In other words, the number type of r and s will remain the same, but r/s will be negated.
So, the negation is:
[tex]r \to[/tex] rational number
[tex]s \to[/tex] irrational number
[tex]\frac{r}{s} \to[/tex] rational number
Solving (b): When r/s is irrational is false
Given that:
[tex]\frac{r}{s} \to[/tex] irrational number
Set r to 0
So:
[tex]\frac{r}{s} = \frac{0}{s}[/tex]
[tex]\frac{r}{s} = 0[/tex] -- rational
Hence, the statement is false when r is 0
Unit Test Unit Test Review Active 6 8 9 5 7 10 3 4 1 N A direct variation function contains the points (-9, -3) and (-12, 4). Which equation represents the function? O y = -3x 3 O y=- o y= 2/3 O y = 3x
Answers
Answer:
y = -7/3x -24
Step-by-step explanation:
I don't find this in the list of options. did you type everything correctly?
can someone help me on this please
Answers
Answer:
The answer is Option A
Step-by-step explanation:
Start by dividing 54 by 6 which will give you 9
then divide b² by b^5 which will give you b³ at the denominator
then a^8÷a^-4
using indices...
=a^8-(-4)
=a^12
at the numerator
put everything together and you'll have...
9a^12/b³
A. [tex] \frac{9 \: {a}^{12} }{ {b}^{3} }[/tex] ✅
[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]
[tex]54 {a}^{8} {b}^{2} \div 6 {a}^{ - 4} {b}^{5} [/tex]
To solve the expression in a simpler way, single out the like terms.
Now, we have
[tex] \frac{54}{6} . \frac{ {a}^{8} }{ {a}^{ - 4} } . \frac{ {b}^{2} }{ {b}^{5} } \\ \\ = 9 \: {a}^{8 - ( - 4)} {b}^{2 - 5} \\ \\ (∵ \frac{ {a}^{m} }{ {a}^{n} } = {a}^{m - n} ) \\ \\ = 9 \: {a}^{8 + 4} {b}^{ - 3} \\ \\ = 9 \: {a}^{12} {b}^{ - 3} \\ \\ ( \: or \: ) \\ \\ = \frac{9 \: {a}^{12} }{ {b}^{3} } \\ \\ (∵ {a}^{ - m} = \frac{1}{ {a}^{m} } )[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}[/tex]
12. Three fifths of the children at my party like chocolate ice cream. How many of the 20 children at my party do not like chocolate ice-cream ? ……………………….
13. I have to pack 296 apples into 8 boxes. How many apples will there be in a box if each box contains the same number of apples? There will be 37
14. If I share 123 sweets equally among amongst 7 children, how many sweets will each child get?
……………………………………..
15. One soccer ball costs $4.50. How much will the soccer will balls in the picture cost?
Answers
Explain how geographic factors impacted the early river valley civilization.
Answers
Ample water resources help them to feed, bath, wash and to do so many domestication works.
River valley means fertile plains, which is so good for agriculture as they can grow lots of different varieties of crops. They didn't have to be depend upon rain.
It helped in transportation, which were used for trading and movement from one place to another.
It protects them from enemy as at a time so many person can't attack over the residing civilization.
Determine a function a(w) that models the area of the top surface of the swimming pool in terms of the width , w
Answers
Answer:
[tex]A(w) = (40 - w) * w[/tex]
Step-by-step explanation:
Given
[tex]P = 80[/tex] ---- perimeter
Required
Write the area as a function of width
The perimeter of a rectangle is:
[tex]P =2(l + w)[/tex]
Where
[tex]l \to length\\ w \to width[/tex]
So, we have:
[tex]80 = 2*(l+w)[/tex]
Divide by 2
[tex]40 = l + w[/tex]
Make l the subject
[tex]l =40 - w[/tex]
The area of a rectangle is:
[tex]A = l * w[/tex]
Substitute: [tex]l =40 - w[/tex]
[tex]A = (40 - w) * w[/tex]
Hence, the function is:
[tex]A(w) = (40 - w) * w[/tex]
You basically look at the bar graph on the right and see which statement is true. Brainliest and thank you!
Answers
Answer:
D
Step-by-step explanation:
To check this answer, you could obviously graph the points, but without graphing, you can tell the line would be straight because each x value is multiplied by the same number to get the corresponding y value.
3 x 5 = 15, 4 x 5 = 20, etc. This shows linear growth. If each x value were multiplied by twice itself (3 x 6, 4 x 8, and so on), you wouldn't have a straight line because the number that x is multiplied by changes depending on the value of x.
Determine the volume of the picture below. Please help
Answers
Answer:
6825 in
Step-by-step explanation:
Since the shape is a composite figure, we need to break it up into 2 shapes!
Rectangle and a triangular prism
Solving for Rectangle...
Volume = Length · Width · Height
Volume = 30 · 13 · 13
Volume = 5070 in
Solving for Triangular Prism
Volume = Length · Width · Height / 2
Volume = 30 · 9 · 13 / 2
Volume = 3510/2
Volume = 1755 in
Finally, add the volumes!
5070 + 1755 = 6825 in
A circle has a radius of 10 cm and a sector of the circle
has an arc length of 10.8 cm.
The angle at the centre of the sector is x.
Calculate the value of x to the nearest degree.
10.8 cm
10 cm
Answers
20 times pi is 62.8
62.8 divided by 10.8 =5.8
360 divided by 5.8 = 62 degree
I hope this will help
Any fake or incorrect and links will be reported and you will have all answers taken away
Write a simplified expression for the perimeter of the triangle.
Answers
Answer:
Perimeter = 6s + 9 units
Step-by-step explanation:
Perimeter = 2s + 4 + 4s + 2 + 3
= 2s + 4s + 4 + 2 + 3
= 6s + 9 units
The radius of the front wheel of Paul's bike is 63cm. Paul goes for a cycle and travels 69.89km. How many full revolutions did Paul's front wheel complete?
Answers
Answer: [tex]17,649[/tex]
Step-by-step explanation:
Given
The radius of the cycle is [tex]r=63\ cm[/tex]
Distance traveled by Paul is [tex]68.89\ km[/tex]
Distance traveled by one complete revolution of wheel is equivalent to circumference of wheel i.e.
[tex]\Rightarrow 2\pi r\\\\\Rightarrow 2\times \dfrac{22}{7}\times 63\\\\\Rightarrow 396\ cm\ \text{or}\ \text{3.96}\ m[/tex]
No of revolution made by wheel
[tex]\Rightarrow n=\dfrac{69.89\times 1000}{3.96}\\\\\Rightarrow n=17,648.9899\approx 17,649[/tex]
Find the night of the parallelogram wh hen it's :area is 2.5mm squared base is 5mm
Answers
Answer:
Height is 0.5
Step-by-step explanation:
height of parallelogram = area ÷ base
= 2.5 ÷ 5 = 0.5
if the sum of a number and half of it is 30. find the number.
Answers
Answer:
20
Step-by-step explanation:
Let us represent the number as x. In a similar sense, half the number would be [tex]\frac{x}{2}[/tex]. We know that their sum is 30, so we can write the following equation:
[tex]x+\frac{x}{2} =30\\2x+x=60\\3x=60\\\fbox{x=20}[/tex]
I hope this helps! Let me know if you have any questions :)
please evaluate 18-18÷3-5
Answers
Answer:
[tex]=7[/tex]
Step-by-step explanation:
18 - 18 ÷ 3 - 5 =
Divide 18 ÷ 3 first because you have to divide before subtracting.
18 - 6 - 5 =
12 - 5 =
= 7
Hope this helps
Answer:
7
Step-by-step explanation:
thanks for the pts
✌️❤️✌️
plzzz anserw ill give you more points and crown if correct plzzz =D
From midnight to 7:00 am, the temperature rose 3/10 °C each hour. If the temperature at midnight was −1°C, what was the temperature at 7:00 am?
Answers
Answer:
11/10°C
Step-by-step explanation:
7 x 3/10 = 21/10
Temperature at Midnight = -1°C
Temperature at 7.00am = 21/10 + (-1°C)
= 11/10°C
Mason’s dad is renting a car for a 5-day business trip. He is paying a rental fee plus an additional fee for every mile driven (x). The rental cost can be modeled by the equation C=0.25x+200. Which statements are accurate interpretations of this model?
Select all that apply.
A There is a per-mile charge of $200.25 plus the rental fee.There is a per-mile charge of $200.25 plus the rental fee.
B The cost is less than $200 if fewer than 25 miles are driven.The cost is less than $200 if fewer than 25 miles are driven.
C There is a charge of $0.25 per mile in addition to the rental fee.There is a charge of $0.25 per mile in addition to the rental fee.
D There is a $200 charge per day plus $0.25 for every mile driven.There is a $200 charge per day plus $0.25 for every mile driven.
E The cost for renting a car for 5 days is $200, plus the per mile fee multiplied by the number of miles driven.The cost for renting a car for 5 days is $200, plus the per mile fee multiplied by the number of miles driven.
F The cost can be calculated by multiplying the total miles driven by 0.25 and adding 200.
Answers
Answer:
A, C, E, F
Step-by-step explanation:
...............
C= 0.25x + 200 represents the rental cost of renting a car with rental fees of $200 and additional fees per 'x' mile as $ 0.25.
What is equation?" Equation is defined as the representation the relation of variables with the sign of equality."
According to the question,
'x' represents the number of miles
'C' represents the rental cost
Rental fees of a car = $200
Additional fees per 'x' miles = $0.25
As per the condition given we have,
C = 0.25x +200
The given model states that total cost of the car is equals to the rental fees of the car is $200 and the additional fees per 'x' miles is $0.25.
Hence, Option(C), Option(E) and Option(F) are the correct answer.
Learn more about equation here
https://brainly.com/question/10413253
#SPJ2
Make the scale balanced.
Answers
(5-2)9=27
The answer is 27
They both need to equal the same number to be equal
Isaias has a watering can that holds 3 liters of water. He uses 500 milliliters of water on each of her plants.
How many plants can he water? Enter your answer in the box. You just need to convert liters to milliliters. Please help, i will give brainliest
Answers
Answer:
6 plants.
Step-by-step explanation:
500 mls = 0.5 liters so the answer is
3 / 0.5
= 6.
Someone help me with this please
Answers
Answer:
Hi, there the answer is -1
Step-by-step explanation:
Question and choices are in the photo please explain the answer
Answers
Answer:
51°
Step-by-step explanation:
Plain reasoning:
the arc of CD is 180°
78° is alrdy cut out for AB
the rest (102°) has to be equally decided between AC and BD
pls brainliest (although a second answer is needed to give the crown)
Comparing Perimeter and Area
Compare the perimeter and area of the original figure to
the perimeter and area of the reduced figure using the
scale factor
Which statements are true about the comparison
between the two figures? Check all that apply.
The scale factor is 2.
The scale factor is
2.
6
The perimeter of the model is the product of the
scale factor and the perimeter of the original
rectangle
The area of the reduced figure is half the area of
the original figure
1
The area of the reduced figure is
times the
3
area of the original figure,
Intro
Done
Answers
please help im desperate no. 48 and 49
Answers
Answer:
48. option C : Substitution
49. Option D : ( 3, 6)
Step-by-step explanation:
3x + y = 15 ------------- ( 1 )
y = 2x ------------------- ( 2 )
Substitute ( 2 ) in ( 1 ) :
3x + y = 15
3x + 2x = 15
5x = 15
[tex]x = \frac{15}{5} = 3[/tex]
Substitute x in ( 2 ) :
y = 2x
y = 2 × 3 = 6
The solution to the system of equation is ( 3 , 6 )
Answer:
C and (3, 6 )
Step-by-step explanation:
(48)
Since given y = 2x the best method of solving is by substitution C
(49)
Given the 2 equations
3x + y = 15 → (1)
y = 2x → (2)
Substitute y = 2x into (1)
3x + 2x = 15
5x = 15 ( divide both sides by 5 )
x = 3
Substitute x = 3 into (2) and evaluate for y
y = 2x = 2 × 3 = 6
solution is (3, 6 )
28. Barrett's mom has a flower vase that is shaped like a perfect cylinder.
The vase has a height of 9 inches, and its radius is 4 inches. What is the
total volume of water that the flower vase can hold?
Answers
Answer:
Vase volume is 452.16 in³
Step-by-step explanation:
The question asks for the volume of a cylinder of radius r and height h. The relevant formula is V = (pi)(r)^2*h
With h = 9 in and r = 4 in, that max volume (of water) is
V = (3.14)(4 in)^2*(9 in) = 452.`16 in³
there are 6 red 4 green 5 yellow and 5 blue marbles in a jar what is the probability of picking a green marble then blue
Answers
Answer:
Find the volume of this prism.
When f(n)=12, what is the value of n?