Keegan and Jeff did some research and found that there are approximately 7,492,000,000,000,000,000 grains of sand on Earth. Jeff says that it is about 7 × 10(15) grains of sand. Keegan says that this is about 7 × 10(18) grains of sand
Answer:
Using the latest geological studies, they calculate the total volume of sand on Earth. Scientists estimate that Earth contains 7.5 sextillion sand grains. ... Astronomers estimate there exist roughly 10,000 stars for each grain of sand on Earth. That's a lot of stars.
Step-by-step explanation:
i looked it up
please solve this i really need the help
Y-2 = ½(X-3)
Answer:
(If solving for x) X = 2y-1
Step-by-step explanation:
Y-2 = 1/2(x-3)
Distributive property
Y-2 = 1/2x - 1.5
Addition property of equality
Y-0.5=1/2x
Multiplication property
2Y-1=X
Symmetric property
X = 2y-1
How to i solve this?
Answer:
-3 and -5
Step-by-step explanation:
-3 and -5 add to -8 and multiply to 15
A.
[tex]p - r \geqslant 150[/tex]
B
[tex]p - r < 150[/tex]
C
[tex]r - p < 150[/tex]
D
[tex]r - p \leqslant 150[/tex]
Answer:
D
[tex]r - p \leqslant 150[/tex]
Somebody please help!
Answer:
-4n(squared)+11.8n
Step-by-step explanation:
Answer:
11.8n - 4n^2
Step-by-step explanation:
To solve this equation, we can combine like terms together:
3.8n - 4n^2 + 8n = 11.8n - 4n^2
Since we can't combine anymore like terms, or simplify, this will be our answer!
Which expressions represent exponential growth? Check all that apply
O 0.2t
O 1.2t
2x^2 - 17
300(1.2)2y
3000(0.12)y
4y+ 3
O 1.12^x+67
HELP!!!!!!!!!!!!!!! IM ON A TIMER I WILL GIVE BRAINLIEST
Answer:
The last one
Step-by-step explanation:
an exponential function always has the x as an exponent
Answer:
B, D, F
Step-by-step explanation:
Got it right
Is 2.45455 irrational or rarional?
Answer:
irrational
Step-by-step explanation:
Inez and Joel work at a store that sells
cell phones. Inez worked for 7 hours
and 23 minutes. Joel worked for
4 hours and 51 minutes. How much
longer did Inez work than Joel?
2 hours 32 minutes
12 hours 14 minutes
3 hours 28 minutes
3 hours 32 minutes
Answer:
2 hrs and 32 mins
Step-by-step explanation:
Step 1. Because Inez worked more we are going to start by subtracting the the minutes. 23-51= -28.
Step 2. Now we move on to the hours. 7-4= 3. Know we know that the hour time is going to be three. But wait!
Step 3. Because we can't have negative numbers, we need to subtract some more. 60-28= 32. Now I know that my minutes will be 32.
Step 4. But because we used a negative number we have to subtract another hour from our time.
Answer: 2 hrs and 32 mins
Hope this helps!
what is 84/40 in its simplest form
Answer:
21/10
Step-by-step explanation: quick maths
Sarah Drew was the top scorer in a women's professional basketball league for the 2006 regular season, with a total of 856 points. The number of two-point field goals that Sarah made was 67 less than double the number of three-point field goals she made. The number of free throws (each worth one point) she made was 32 less than the number of two-point field goals she made. Find how many free throws, two-point field goals, and three-point field goals Sarah Drew made during the 2006 regular season.
Answer:
Free throws= 309 goals
Two-point field goals=341 goals
Three-point field goals=204goals
Step-by-step explanation:
This is a word problem, let us bring out all varibles
Let the number of three-point field goals =x
Two-point field goals= 2x-67
Free throws =(2x-67 )-32
Free throws =2x-67-32
Free throws =2x-99
Hence the mathematical expression for the total goals is
x+2x-67 +2x-99= 856
collecting like terms
x+2x+2x-67-99=856
5x-166=856
5x=856+166
5x=1022
divide both sides by 5 we have
x=1022/5
x=204.4
hence
1. Three-point field goals=204goals
2. Two-point field goals= 2x-67
=2(204)-67
=408-67
=341 goals
3. Free throws =2x-99
=2(204)-99
=408-99
=309 goals
Marisol traveled 175 miles in 2 ½ hours. What was her average rate of speed?
Answer:
70 mph
Step-by-step explanation:
175 divided by 2.5 equals 70 so it would be 70 mph
If a bank doubles in size every 5 years, then by what percent does it grow after only 3 years? Round to nearest tenth of percent.
Write a real-world problem that can be modeled by 4x(-7)?
Answer:
A football player carried the ball 4 times in a game. Each time he carried the ball he got tackled 7 yards behind the line of scrimmage. How many yards did the player gain during the game ? 4(-7)=-28
Step-by-step explanation:
Help!!!! ASAP PLEASE WILL GIVE BRAINLIEST
Answer:
150 each times
Step-by-step explanation:
Just subtract.Ex:300-150=150
A quadratic function y = f(x) is plotted on a graph and the vertex of the resulting
parabola is (-6, -3). What is the vertex of the function defined as
g(x) = -f(x) + 3?
Answer:
(6, 6).
Step-by-step explanation:
The negative before f(x) reflects f(x) in the x-axis so this makes the new vertex equal to (-6, 3), then the + 3 translates it up 3 units so the required vertex is
(-6, 6).
i got a challenge!!
make a equation using 6 5 and 12, have fun
Answer:
y=6x+5=12
Is this okay
Can someone do this pleaseeee. I owe u!!
A.) Plan A: 40+40=0.80$
Plan B: 50+38=0.88$
Plan B offers the better deal
B.) Plan A: 40+(40·3)=1.60$
Plan B: 50+(38·3)=1.64$
Plan B offers the better deal
C.) Plan A: 40+(40·5)=2.40$
Plan B: 50+(38·5)=2.40$
They offer the same?
D.) Plan A: 40+(40·6)=2.80+.35=3.15$
Plan B: 50+(38·6)=2.78+.31=3.09$
This one confuses me..
what is the first step when solving this equation for t?
31-12t = 211
A. combine 31-12
B. add 12 to both sides
C. add 31 to both sides sides
D. subtract 31 from both sides
Answer:
D. subtract 31 from both sides
you cant combine cuz theyre not like terms and you have to undo the constant number before you undo the second term in the equation so you will end up needing to do letter choice D first.
Step-by-step explanation:
hope this helped a little bit :)
======================================================
Explanation:
The expression 31-12t is the same as 31+(-12t). Adding a negative is the same as subtracting a positive.
Then we can flip the two terms getting -12t+31. This is because we can add two numbers in any order.
So we're effectively solving -12t+31 = 211
The first step is to subtract 31 from both sides to undo the +31. We follow PEMDAS in reverse to isolate the variable.
Which is the length of the third side of the right triangle?
13 cm
30 cm
I need help solving this equation: -9x-6>-2x-10
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Inequality Form:
x
<
4
7
Interval Notation:
(
−
∞
,
4
7
)
just put it all together sorry i put it in dif lines my computers acting up-
16. Cooper works in a chemistry lab and finds
the boiling point of iodine to be 179.6° C. He
looks in a reference book and finds that the
actual boiling point of iodine is 184.3°C. What
is his percent error? (Round to the nearest
tenth of a percent.)
Determine the coordinates of the midpoint of the segment with the given endpoints.
H (7, 10), X (5,-8)
O (1,1)
O (6, 1)
O (6,9)
O (1,9)
Answer:
(6, 1)Step-by-step explanation:
Given points
H (7, 10), X (5,-8)Midpoint is
((7 + 5)/2, (10 - 8)/2) =(12/2, 2/2) =(6, 1)Chose the equation that has a slope of (-3/4) and a y intercept of -6
Answer:
D
Step-by-step explanation:
I am pretty sure.
it might be B though
$75 dinner; 18% tips
Answer:
88.5
Step-by-step explanation:
This week Isabelle worked (x+4) hours. She is paid (x-
4) dollars per hour. Write a simplified polynomial for
the amount that Isabelle earned this week then
calculate her pay if x = 12. How much did Isabelle
earn?
Answer:
Step-by-step explanation:
x-12
x3
-4
x=34
The Haitian Revolution was the first, of many, successful slave uprisings in history.
A) True
B) False
A carpenter is building a rectangular bookcase with diagonal braces across the back, as shown. The carpenter knows that mangle ADC is a right angle and that mangle BDC is 31° greater than mangle ADB. Solve an equation to find mangle BDC and mangle ADB.
Answer:
Step-by-step explanation:
Let <ADB be x. From the rectangle, <ADB+<BDC = <ADC
<ADB+<BDC = 90° ..... 1
If angle BDC is 31° greater than mangle ADB, then <BDC = x+31
Substituting the given values into the equation 1:
x+x+31 = 90
2x + 31 = 90
2x = 90-31
2x = 59
x = 59/2
x = 29.5°
To get <BDC, we will substitute x = 29.5° into the expression <BDC = x+31
<BDC = 29.5+31
<BDC = 60.5°
Hence <ADB = 29.5° and <BDC = 60.5°
Guys what is 9 x 9 - 5 x 5 devided by 10 + 2 x 2 x 2 - 11
Answer:
11
Step-by-step explanation:
9*9= 81, 81-25=55| 10+6=16, 16-11=5|
55/5=11
d. Write the fraction of students with two siblings as a decimal. Round to
the nearest thousandth.
Answer:
WHats the students
solve -35g=-8h+11k for h
Answer: h = 35g/8 + 11k/8
Step-by-step explanation: just use math-way