Answer: 3
Step-by-step explanation:
180 / 1/3 = 60
180 / 13/20 = 117
117 + 60 = 177
180 - 177 = 3
An atom of silicon is approximately 0.00000000025 meters wide. How do you express that number in scientific notation? O 25 10-10 meters O 2.5 × 10-11 meters O 2.5 1010 meters O 2.5 x 10-10 meters
Answer:
.00000000025 = 2.5 * 10^-10
Looks like the last one
Can also write
2.5E-10
Find the average speed in km/h for a journey of 175 meters and 35 seconds
Answer:
18 km/h
Step-by-step explanation:
1. Convert 175 metres into km
1000 m = 1 km (divide by 1000)
175 ÷ 1000 = 0.175 km
so 175 m = 0.175 km
2. Convert 35 seconds into hours
60 seconds = 1 min
60 mins = 1 hour
3600 (60 × 60) seconds = 1 hour (divide by 3600)
35 ÷ 3600 = 0.00972...
3. Calculate the speed
speed = distance ÷ time
= 0.175 ÷ 0.00972...
= 18 km/h
Question 8
The square of a number is always bigger than the number. Choose a counterexample that would prove this conjecture false.
The number is 10, and 10 squared is 100.
The number is 1/2, and 1/2 squared is 1/4
There is no counterexample that will prove the conjecture false.
Answer:
Step-by-step explanation:
The number is 1/2, and 1/2 squared is 1/4.
3/5e-6=-2/5(e-10)-7
Answer:e=19
Step-by-step explanation:
3/5e-6 = -2/5e +20 -7 distributed multiplication into brackets
3/5e + 2/5e = 20-7+6 collected like terms
e=19
what is 6+6=blank find the answer please
What number is 5.1% of 15?
Answer: 0.765
Step-by-step explanation:
“of” means “multiply”
5.1% can be written as 0.051
Multiply 15 by 0.051
0.765
Original grade:80
New grade:100
Find the precent of increase
Answer:
25%
Step-by-step explanation:
because from 80 to 100 is 20 and 20 is 1/4 of 80 and 1/4 to a decimal is .25
Answer:
80/100. That's 20% increase. When you hadd 8 and 2 you get 10.
Step-by-step explanation:
what is the sum of the arithmic series 26+29+32+35+38+41+44
Answer:
The answer is definetly 245
Find the x- and y-intercepts of : 4y-6x = 24
Answer:
x-intercept: (-4, 0)
y-intercept: (0, 6)
Step-by-step explanation:
4y - 6x = 24
To find the x-intercept, set the y value equal to 0.
4(0) - 6x = 24
Simplify by removing 4(0) since it just equals 0.
-6x = 24
Divide both sides of the equation by -6
x = -4
Since we set y equal to 0 and we know that the x value is -4, we can create a coordinate for the x-intercept of the equation.
(x, y) = (-4, 0)
Repeat the process for finding the y-intercept, but set x equal to 0.
4y - 6(0) = 24
4y - 0 = 24
4y = 24
Divide both sides of the equation by 4
y = 6
Write as a coordinate/intercept.
(x, y) = (0, 6)
Let me know if you have any questions!
show steps and i'll give brainly
Answer:
FOIL F-FIRST O-OUTSIDE I-INSIDE L-LAST
Step-by-step explanation:
[tex]2.6 = \times.2 \frac2.{68}{?} [/tex]
instructions: what is m
plz help me correct answer gets brainiest thank you!
Step-by-step explanation:
the dimensions could be:
1) the height = 6 cm and the width = 9 cm
or
2) the height = 12 ft and the width = 18 ft
#1
[tex]\\ \sf{:}\dashrightarrow \dfrac{3}{4.5}=\dfrac{3(2)}{4.5(2)}=\dfrac{6}{9}[/tex]
Length=9ftBreadth=6ft#2
[tex]\\ \sf{:}\dashrightarrow 1(\dfrac{3}{4.5})=\dfrac{3}{4.5}[/tex]
Length=4.5ftBreadth=3ftQuestion 10 of 2
What is the coefficient in the expression 8x2 +1?
O A. 1
ОВ. x
O C. 2
O D. 8
What is the coefficient?
Describe the end behavior of y = 5x^4
Answer:
answer below
Step-by-step explanation:
5x⁴: degree even (4), leading coefficient +5, rise to left and rise to right
x -> -∞ y -> ∞
x -> ∞ y -> ∞
An amount of 3560 is decreased by 35.5% every year how much will it be worth after eight years
please help me , thank you
Hello BinibiningDel!
[tex] \huge \boxed{\mathbb{QUESTION} \downarrow}[/tex]
Factorise the polynomials.[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]
[tex] \tt \: 1) \: \: \: {x}^{2} - 49 \\ \tt \: = (x) ^{2} - ( 7) ^{2} \\ = \boxed{ \bf \: (x + 7)(x - 7) }[/tex]
Method used :-
Use the algebraic identity ⇨ a² - b² = (a + b) (a - b ).Here, a = x & b = 7.__________________
[tex] \tt 2) \: \: \: {a}^{2} + 10a+ 25 \\ = \boxed{\bf(a + 5)^{2} }[/tex]
Method used :-
Use the algebraic identity ⇨ a² + 2ab + b² = (a + b)².Here, a = a & b = 5.__________________
[tex] \tt \:3) \: \: \: {x}^{2} + x - 30 \\ = \tt ({x}^{2} - 5x) + (6x - 30) \\ = \tt \: x(x - 5) + 6(x - 5) \\ = \boxed{ \bf(x + 6)(x - 5)}[/tex]
Method used :-
Use the splitting the middle term method to factorise this.__________________
[tex] \tt \: 4) \: \: \: {4x}^{2} - {y}^{2} \\ = \tt \: (2x) ^{2} - (y) ^{2} \\ = \boxed{ \bf(2x - y)(2x + y)}[/tex]
Method used :-
Use the algebraic identity ⇨ a² - b² = (a + b) (a - b ).Here, a = 2x & b = y.__________________
[tex] \tt \: 5) \: \: \: 8 {m}^{2} n ^{3} - 6mn ^{2} \\ = \tt \: 2\left(4m^{2}n^{3}-3mn\right) \\ = \boxed{ \bf \: 2mn\left(4mn^{2}-3\right) }[/tex]
Method used :-
Take the common factor out & factorise it.__________________
[tex] \tt \: 6) \: \: \: \tt \: 2 d ^ { 2 } + 5 d - 12 \\ = \tt \: \left(2d^{2}-3d\right)+\left(8d-12\right) \\ \tt \: = d\left(2d-3\right)+4\left(2d-3\right) \\ = \boxed{ \bf \: \left(2d-3\right)\left(d+4\right) }[/tex]
Method used :-
Use the splitting the middle term method to factorise this.__________________
[tex] \tt \:7) \: \: \: y ^ { 3 } + 27 \\ = \tt (y) ^{3} + ( {3})^{3} \\ = \boxed{ \bf\left(y+3\right)\left(y^{2}-3y+9\right) }[/tex]
Method used :-
Use the algebraic identity ⇨ a³ + b³ = (a + b) (a² - ab + b²).Here, a = y & b = 3.__________________
[tex] \tt \: 8) \: \: \: 20 b ^ { 3 } c ^ { 5 } + 35 b ^ { 4 } c ^ { 2 } \\ = \tt \: 5\left(4b^{3}c^{5}+7b^{4}c^{2}\right) \\ = \boxed{ \bf \: 5b^{3}c^{2}\left(4c^{3}+7b\right) }[/tex]
Method used :-
Take the common factor out & factorise it.__________________
Hope it'll help you!
ℓu¢αzz ッ
Solve the simultaneous equations 2x + y = 5 and 2y = x – 10.
[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]
The given equations are :
[tex]2x + y = 5[/tex][tex]2y = x - 10[/tex]From the first equation, we get :
[tex]2x + y = 5[/tex][tex]y = 5 - 2x[/tex]now, let's put the value of y as (5 - 2x) in second equation to find the value of x :
[tex]2y = x - 10[/tex][tex]2(5 - 2x) = x - 10[/tex][tex]10 - 4x = x - 10[/tex][tex]5x = 20[/tex][tex]x = 4[/tex]hence, value of x = 4, Plugging the value of x in second equation :
[tex]2y = x - 10[/tex][tex]2y = 4 - 10[/tex][tex]2y = - 6[/tex][tex]y = - 3[/tex]so, the required values are :
x = 4 y = -3Ann is helping her aunt sew a lace border onto 2 quilts. Each quilt is 60 inches wide by 80 inches long. At the craft store, they buy a 25-yard roll of lace. How many inches of lace will they have left after finishing the quilts?
Answer:
340 inches
Step-by-step explanation:
25 yds = 900 in
60 + 80 + 60 + 80 = 280
280 x 2 = 560
900 - 560 = 340
Go to your math tools and open the Graph tool to graph the equation you found for calculating profit. Set the scale of the graph to go from -5 to 40 on the x-axis and from -80 to 80 on the y-axis.
Part A
What do the points on the line in quadrant IV represent in terms of the situation?
Answer:
The y-coordinates in quadrant IV are negative. Because y represents profit, negative values of y signify not making a profit. That is, negative values signify loss. The points in quadrant IV represent the baseball team losing money.
Step-by-step explanation:
I took the assignment :).
I need help with this one
Answer:
S = 180C²
18,000 lbs
Step-by-step explanation:
Assuming the table attached with C in inches and S in pounds, we see that the first differences in S are ...
180, 540, 900
These are not constant, so the relation is not linear.
Second differences are ...
360, 360
These are constant, so the relation is quadratic. With a short trial, we find that a suitable equation is ...
S = 180·C²
__
The safe load for C=10 is then ...
S = 180·10² = 18,000 . . . pounds
better?
Can you solve all of these problems in deep detail
Answer:
p = -5
Step-by-step explanation:
6(6p + 5) = -150
/6 /6
6p + 5 = -25
-5 -5
6p = -30
/6 /6
p = -5
A gym employee earns the same amount each month. After working for three months, he earned $4,500. Complete the table to determine how much money he will make over a five-month period. 5.Is the relationship proportional? Explain your thinking.
Answer:
1,500
Step-by-step explanation
1. to divide 3 by 4,500.
after dividing 3 and 4,500 you get
1,500
The money he will make over a five-month period will be $7,500.
What are ratio and proportion?A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.
A rec center worker procures a similar sum every month. In the wake of laboring for a considerable length of time, he procured $4,500.
The amount of money that he earns each month is given as,
⇒ $4,500 / 3
⇒ $1,500 per month
Then the money he will make over a five-month period will be given as,
⇒ $1,500 x 5
⇒ $7,500
The money he will make over a five-month period will be $7,500.
More about the ratio and the proportion link is given below.
https://brainly.com/question/14335762
#SPJ5
please someone help me giving brainliest :)
Answer:
It should be 4.
HELP! ILL GIVE BRAINLIEST AND A LOT OF POINTS
Answer:
[tex]y=\frac{1}{2}x -3[/tex]
Step-by-step explanation:
The 'rise' is 1 and the 'run' is 2, so the slope is 1/2.
The graph is shifted down 3 (the y-int is (-3)
PLEASE HELP WILL GIVE BRAINLIEST PLS NO FAKE ANSWERS! YOU DONT HAVE TO SHOW WORK JUST EXPLAIN
In the figure shown, line AB is parallel to line CD.
Part A: What is the measure of angle x? Show your work. (5 points)
Part B: Explain how you found the measure of angle x by identifying the angle relationships that you used along the transversal. (5 points)
Answer:
x=53
Step-by-step explanation:
Parallel lines cut by a transversal mean that the alternate interior angles are congruent. Meaning, 115=62+x
115-62 is 53
Answer:
a) x=56º
b= Angle x is on a line. All lines create linear angles, so together all angles that are on that side of the line = 180º. Since the two lines were parallel we know that the two angle measurements next to x are congruent. So 180=62+62+x.
Step-by-step explanation:
180-62-62=56
Jake earns $8 per hour for cutting grass. If he works a 35-hour week,
how much money will he earn?
There are many ways to solve these types of questions. But I am going to use the fraction method.
Step 1: Set up a fraction.
Setting up a fraction, given the question will be the units on the same level. And the money earned will be a variable, "[tex]m[/tex]". It does not matter whether they are top or bottom.
[tex]\frac{8}{1} = \frac{m}{35}[/tex]
Step 2: Solve
[tex]\frac{8}{1} = \frac{m}{35}[/tex]
Multiply 35 to both sides[tex]\frac{35m}{35}=8\cdot \:35[/tex]
[tex]m=280[/tex]
Therefore, Jake will earn $280.
Please help me solve this ASAP
Answer:
x = 1.6Step-by-step explanation:
[tex] - 2.5(4x - 4) = - 6 \\ - 2.5(4x) - 2.5( - 4) = - 6 \\ - 10x + 10 = - 6 \\ - 10x + 10 - 10 = - 6 - 10 \\ - 10x = - 16 \\ \frac{ - 10x}{ - 10} = \frac{ - 16}{ - 10} \\ x = 1.6 \\ [/tex]
Which one of the following would most likely have a positive linear correlation coefficient?
A. grade point average compared to the number of hours a student watches TV
B. the height of a tomato plant throughout the year
C. a person's salary compared to the amount of education they have attempted
D. SAT scores compared to hours spent studying
Answer: B
Step-by-step explanation: The tomato grows more over time so it will be a positive..
The height of a tomato plant throughout the year shows a positive linear correlation coefficient option (B) is correct.
What is correlation?It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.
[tex]\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}[/tex]
A. grade point average compared to the number of hours a student watches TV.
The grade points depend on the number of hours a student watches TV.
If watching time increases the grade point decreases.
B. the height of a tomato plant throughout the year
The height of a tomato and the number of years show a positive linear correlation.
C. a person's salary compared to the amount of education they have attempted:
The above situation represents an exponential regression.
D. SAT scores compared to hours spent studying
If the time spent in studying increases the SAT scores increases rapidly.
Thus, the height of a tomato plant throughout the year shows a positive linear correlation coefficient option (B) is correct.
Learn more about the correlation here:
brainly.com/question/11705632
#SPJ2
PLEASE HELP ME... yes again ILL MARK BRAINLIEST
I belive its B i may be wrong, combine like terms is definitly first so A or B
1. The sum of the real numbers x and y is 15. Their
difference is 3. What is the value of xy ?
A. 3
B. 6
C. 9
D. 15
E. 54
( I really need this to be worked out so may I have help with this?)
Answer:
x = 9
y = 6
Step-by-step explanation:
Let's set up equations:
x + y = 15
x - y = 3
Let's rearrange one of these equations to use the substitution method:
x - y = 3
Add y to each side:
x = y + 3
Substitute in for x:
x + y = 15
y + 3 + y = 15
Combine like terms:
( y + y ) + 3 = 15
2y + 3 = 15
Subtract 3 from each side:
2y = 12
Divide each side by 2:
y = 6
Substitute this in to find the other variable:
x + y = 15
x + 6 = 15
Subtract 6 from each side:
x = 9