HELP!!!!!!
Which of the following is a true statement?
4/5 x 4/5=1
3/10 ÷ 7/9=3/10 x 9/7
9/12 x 12/9= 0
1/2 ÷1/2= 1/4
Answer:
3/10 ÷ 7/9=3/10 x 9/7 is the true one
Step-by-step explanation:
4/5 x 4/5 = 16/25 not 1 so this statement is wrong.
3/10 ÷ 7/9=3/10 x 9/7, this is the true statement and it equals 27/70
9/12 x 12/9= 1 not 0
1/2 ÷1/2= 1 not 1/4
The water level in a lake decreased by 2 1/4 inches in march and increased by 1 5/8 inches in april. Determine wether the water level increased or decreased and by how much 1. Increased by 3/8 2. Increased by 5/8 3. Increased by 5/8 4. Decreased by 5/8
Change in level is given by :
C = increase in level - decrease in level.
Now,
Decrease in level in March is 2 1/4 = 9/4 inches.
Increase in level in April is 1 5/8 = 13/8 inches.
Putting value of these in above equation, we get :
C = 13/8 - 9/4
C = 13/8 - 18/8
C = -5/8 inches
Therefore, the overall level after April will decrease by 5/8 inches.
Hence, option 4. is correct.
if
f(x)=2(x-3)+4,
what is:
f(-2)
Answer:
f(-2) = -6
Step-by-step explanation:
2(-2-3) + 4
2(-5) + 4
-10 + 4
-6
Johnny's electric bill is a variable expense. What is the average amount he pays for electricity If he paid $235 in December, $119 in January, $109 in February, $1 22 in March and $135 in April?
PLEASE HELP!!!!!!!!!!!!! Solve for the following question. SHOW ALL STEPS! 8x-6/2=x+12
Answer: 15/7
Step-by-step explanation: Simplify 6/2 to 3
8x-3=x+12
Add 3 to both sides
8x=x+15
Subtract x from both sides
7x=15
Divide both sides by 7
x=15/7
Answer:
x = 2.14
Step-by-step explanation:
8x - 3 = x + 12 (6/2 = 3)
7x - 3 = 12 (subtracted 1x from both sides)
7x = 15 (added 3 to both sides)
x = 2.14 (divided 15 by 7)
Hope this helps :)
HELP DUE TODAY! Determine if the problem is done correctly AND explain your reasoning. If the problem is correct then explain the steps that were taken. If the problem is incorrect then explain what the mistake made was and what the correct solution should be.
Multiply the polynomials using the distribution method: (2x – 3)(4x + 8)
Line 2 is correct because of the distribution rule. You multiply each outer term by the inner terms in the parenthesis.
2x(4x+8) = 2x*4x + 2x*8 = 8x^2+16x
-3*(4x+8) = -3*4x-3*8 = -12x-24
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Line 3 is correct as well. The 16x and -12x combine to 4x. You can think of it like 16-12 = 4, then just tack x's onto everything getting 16x-12x = 4x
Or you can think of it like "16 boxes - 12 boxes = 4 boxes" and you replace "boxes" with "x" for shorthand.
The other terms aren't like terms so we just leave them as is.
to the nearest tenth of a unit, what is the distance on a coordinate plane between the points (-6, -9) and (5, 7)? Answer needs to be in units
Answer: 20 units
Step-by-step explanation:
Answer:
20 units
distance formula is (x-x2)^2 + (y-y2)^2 all under a square root.
Find the future value of a retirement account in which you deposit $2000 a year for 30 years if
the interest rate is 6%.
a. $60,000
C. $210,666
b. $97,295
d. $158,116
plz plz plz, help me :(
Answer:
b = 3 in
Step-by-step explanation:
The area (A) of a rectangle is
A = lb ( l is the length and b the breadth )
Here A = 24, l = 4 and breadth = b + 3 , thus
4(b + 3) = 24 ( divide both sides by 4 )
b + 3 = 6 ( subtract 3 from both sides )
b = 3
Thus the width of the message is 3 in
Find the area and perimeter of a rectangle if
the length is 25 and the width is 8.
Answer:
area is 200 perimeter is 66
Step-by-step explanation:
Does anyone know the right answer to this ?
Answer:
false, true, true
Step-by-step explanation:
hope this is gonna help u :D
Answer:
false true, true
Step-by-step explanation:
so 1 is false 2 is true 3 is true
i think
which of the following are valid for the triangle below? check all that apply A.) TAY B.)AXM C.) MAY D.) XMA E.) XMT F.) MAX
Answer:
B) XMA; C) MAX; and D) AXM
Step-by-step explanation:
A triangle is named based on its vertices. The vertices of this angle are A, M and X; this means any combination of these three letters can be used to name the triangle.
When multiplying or dividing both sides of an inequality by a negative number, you need to remember to "flip" the inequality sign.
True or False
That is a true statement
Step-by-step explanation:
true................
QUESTION 9 of 10: You are considering leasing a store site that has 1,800 square feet. The landlord is asking for rent of $55 per square foot per year. How much is the rent per month?
a) $8,000
b) $8,250
c) $8,500
d) $8,750
Answer: $8,250
Step-by-step explanation:
just did the quiz
Lorrie wants to determine the average amount of time that students at her school spend on the computer each day. There are 350 students in 15 classes. The number of boys and girls is approximately equal. Which is the most random sample?
50 students in the art club
40 girls on her soccer team
2 students from each of the 15 classes
10 students from each of the 3 computer electives
Answer:2 students from each of the 15 classes because we don’t know the exact amount
C for the lazy readers
Step-by-step explanation:
just finished taking the test
The most appropriate random sample is 2 students from each of the 15 classes.
What is a random sample?In statistics, a simple random sample is a subset of people chosen at random from a larger group, all of whom were chosen with the same probability. It is a procedure for randomly choosing a sample.
Given, Lorrie wants to determine the average amount of time that students at her school spend on the computer each day.
There are 350 students in 15 classes.
After going through the options we can conclude that the most appropriate random sample is 2 students from each of the 15 classes.
learn more about random samples here :
https://brainly.com/question/12719656
#SPJ6
After paying 6 dollars for the pie, Melanie has 99 dollars left. How much money did she have before buying the pie ?
Answer:
105
Step-by-step explanation:
Answer:
$105
Step-by-step explanation:
x-6=99
x=105
Is (1, -2) a solution to the equation y = 5 - 3x?
Answer:
here, in this question given the value of X will be 1 and the value of y will be (-2)
but (-2) =5-3(1)
(-2)=/ 2
so (1,(-2)) is not the solution of the given equation
hope you like the answer.........
please mark the answer as brainliest
........
i need help. there is two question please answer both
Answer:
Problem 1: HI = 12.22
Problem 2: AB = 16.23
Step-by-step explanation:
Problem 1:
tan = opposite / adjacent
HI = x
tan 42° = 11 / x
multiply both sides of the equation by x
x (tan 42°) = 11
divide both sides of the equation by tan 42°
x = 11 / tan 42°
tan 42° = 0.90 (given)
x = 11 / 0.90
x = 12.22
Problem 2:
cosine = adjacent / hypotenuse
cos 52° = 10 / c
multiply both sides by c
c (cos 52°) = 10
divide both sides by (cos 52°)
c = 10 / cos 52°
cos 52° = 0.616 (given)
c = 10 / 0.616
c = 16.23
Write an equivalent expression for (2m+3)(m-1).
The number of days each licensed driver in Marion County uses a commuter rail line annually is normally distributed with mean 66 and standard deviation 21. How many days must a driver use a commuter rail line annually to be in the top 5% of rail users? Round to the nearest integer.
Answer:
31.5 days
Step-by-step explanation:
We.solve using z score formula
z-score is is z = (x-μ)/σ,
where x is the raw score
μ is the population mean
σ is the population standard deviation.
The 5th percentile z score = -1.645
Mean = 66
Standard deviation = 21
Hence:
-1.645 = x - 66/21
-1.645 × 21 = x - 66
-34.545 = x - 66
-34.545 + 66 = x
x = 31.455 days
Approximately to the nearest round integer
= 31.5 days
Therefore, driver use a commuter rail line 31.5 days annually to be in the top 5% of rail users
I need help, please I have until 9 p.m. to finish it number 3 homework
Answer: 1/3
Step-by-step explanation:
When adding or subtracting fractions, they must have the same denominator.
[tex]\dfrac{5}{9}-\boxed{\dfrac{?}{?}}=\dfrac{12}{54}\\\\\\\dfrac{5}{9}\bigg(\dfrac{6}{6}\bigg)-\boxed{\dfrac{?}{?}}=\dfrac{12}{54}\\\\\\\dfrac{30}{54}-\boxed{\dfrac{?}{?}}=\dfrac{12}{54}\\\\\\\dfrac{30}{54}-\boxed{\dfrac{18}{54}}=\dfrac{12}{54}\\\\\\\text{Simplify}\quad \dfrac{18}{54}\div \dfrac{18}{18}\quad =\large\boxed{\dfrac{1}{3}}[/tex]
f(a) = 54 +3+1; Find f(o)
Answer:
sum of two function
Step-by-step explanation:
I need help please
ew=p ,solve for e
Answer:
e=p/w
Step-by-step explanation:
Take w and move it to the left by dividing both sides by w to get the answer
A complex number z_1z 1 z, start subscript, 1, end subscript has a magnitude |z_1|=6∣z 1 ∣=6vertical bar, z, start subscript, 1, end subscript, vertical bar, equals, 6 and an angle \theta_1=70^{\circ}θ 1 =70 ∘ theta, start subscript, 1, end subscript, equals, 70, degrees. Express z_1z 1 z, start subscript, 1, end subscript in rectangular form, as z_1=a+biz 1 =a+biz, start subscript, 1, end subscript, equals, a, plus, b, i. Round aaa and bbb to the nearest thousandth.
Answer:
Step-by-step explanation:
Given the modulus of a complex number |z1| = 6 and its argument θ1 = 70°
If z1 = a+bi, according to definition;
|z1| = √a²+b²
|z1|² = a²+b²
Since |z1| = 6, |z1|² = 6² = 36
a²+b² = 36 .......... 1
Also the argument is derived from the expression
tan θ = b/a
tan 70 = b/a
b/a = 2.75
b = 2.75a ........ 2
Substitute equation 2 into 1
a²+b² = 36
a²+(2.75a)² = 36
a²+7.5625a² = 36
8.5625a² = 36
a² = 36/8.5625
a² = 4.204379
a = √4.204379
a = 2.051 (to nearest thousandth)
Since b = b = 2.75a
b = 2.75(2.051)
b = 5.639 (to nearest thousandth)
z1 = 2.051+5.639i
Answer: [tex]-5\sqrt{3}-5i[/tex]
Step-by-step explanation: It was right on Khan
On Saturday, 32,736 more movie tickets were sold than on
Sunday. On Sunday, only 17,295 tickets were sold.
How many people bought movie tickets over the weekend?
In Python, equations are not evaluated by following the standard order of operations when performing calculations. true or false?
Answer:
false
Step-by-step explanation:
Answer:
[tex]false.[/tex]
Step-by-step explanation:
[tex]python \: programming \: language \: is \: powerful \\ \: scientific \: coding \: language \: for \: both \\ \:high \: level \: programs \: and \: also \: for \: learners\\ its \: very \: fast \: in \: scientific \: and \: mathematical \: calculation. \\ \: for \: me \: i \: think \: python..... if \: not \: the \: best....is \: very \: easy \: to \: learn \\ [/tex]
Find the slop of this linear equation y=3x -4
Answer:
3
Step-by-step explanation:
The equation [ y = 3x - 4 ] is written in slope-intercept form [ y = mx + b ].
m = slope
b = y-intercept
The variable "m" in the given equation is 3, thus makes it the slope.
Best of Luck!
What is itttttttttttt
Answer:the second one
Step-by-step explanation:
just trust me i can't explain it on a pc
1. Evaluate the expression 4a - 3b + c; if a = -2, b = 4 and c = -5.
A. -25
B. -15
C. 1
D. 25
Answer:
A
Step-by-step explanation:
plug in all variable values
4(-2) - 3(4) + (-5)
negative × positive = negative
positive × negative = negative
-8 - 12 - 5
-20 - 5
-25
an ant has fallen into a bottle 60cm deep and is climbing up 8 cm everyday. As it is exhausted, the ant is slipping down 4cm every night. Then how long would it take teh ant to escape from the bottle
Answer:
It took 13 days and a half to escape
Step-by-step explanation:
This is a classic problem where the first answer that comes to one's mind is not the correct answer.
The ant climbs up 8 cm per day and slips down 4 cm every night. It means the real distance the ant goes up is 8 - 4 = 4 cm per day. Since the total distance is 60 cm, it could lead us to think the time needed to escape from the bottle is 60/4=15 days. This is wrong, as we'll prove below.
Assume the last day, the ant climbs up the final 8 cm and escapes. We don't know yet when, but we can assure that day the ant was at a height of 60 - 8 = 52 cm.
That 52 cm was the result of the 4 cm per day the ant effectively went up, thus it needed 52/4=13 days to reach that height.
At 13 days, the ant was at 52 cm, the day 14 it climbed up the final 8 cm and escaped.
Answer: It took 13 days and a half to escape