Answer: 3/8x
To find the least common denominator first convert all integers and mixed numbers (mixed fractions) into fractions. Then find the lowest common multiple of the denominators. This number is same as the least common denominator .You can then write each term as an equivalent fraction with the same LCD denominator.
What is the equation of the line that passes through the point (3, -1) and is perpendicular to the equation y = -3x + 2?
Answer:
is X= Y= -2 3
Step-by-step explanation:
is easy question
Please help I need to know ASAP I’ll give 50 points and brainliest to everyone
The elevation of Charleston SC is about 20 feet above sea level. Select all of the elevations that are lower than the Charleston’s elevation.
I’ll give brainliest
0 feet
27 feet
105 feet
-3 feet
-12 feet
0 feet
-3 feet
-12 feet are correct
A) 0 feet.
B) -3
C) -12
hope this helps.
it's not 50 points LOL.
but anyways I like helping.
plz help me with this asap
81x^2 − 49y^2
Factorize each completely
1. y^2 − 1
2. x^2 − 2^2
3. x^2 − 4y^2
4. x^2 − 25b^2
5. 36 − 9m^2
6. 36a^2 − 169x^2
7. 81x^2 − 49y^2
8. 49r^2 − 16s^2
9. 144x^2 − 49
10. 64x^2 − 25
11. 81a^2 − 64b^2
12. 1 − 16x^2
13. 49x^2 − 1
14. (a + b)^2 − 2^2
15. (a − b)^2 − 1
Answer:
i will answer THIS.. just give me some time
please help me ( show ur work it’s multiple choice ):)
A cell phone company offers two plans for unlimited calling. The first plan has a monthly charge of $25 and 8.08 per text message. The second plan has a monthly charge of
$20 and $.12 per text message. For how many tect messages would the two plans have an equal cost? (What is the solution to this system? X represents the #of text
messages and represents the total costs)
• 66
• 175
• 125
• they will never cross
Alaina needs to sell 225 boxes in order to be the top seller. She sells thin mints and samoas to all of her customers for a total of $628.00 in sales. The thin mints sell for $3.00 each and the samoas sell for $2.50 each. Which system of equations below could be used to find how many boxes of thin mints and samoas were sold?
Answer:
94 boxes of samoas
131 boxes of thin mints
Step-by-step explanation:
m=mints
s=samoas
s+m=225 m=225-s
s(2.5)+m(3)=628
2.5s+3m=628
substitute for m
2.5s+3(225-s)=628
2.5s+675-3s=628
reduce
-0.5s=-47
s=94
m=131
PLEASEEE i REALLY need help!! This is due tonight!!
1. Think of two things that you can measure. Give one that requires high precision, or a low level of uncertainty. Give another that can have lower precision, or a higher level of uncertainty.
2. Explain why you made your choices. Why does one measurement need to be more precise than the other?
Problem 1
Two things you could measure is a person's height and the speed needed to reach the planet Mars. The person's height can be measured with a low level of precision, which means we don't need to be that accurate. We could say "that person is about 6 feet tall" and whoever is listening would get a sense of their height. In contrast, we need high precision for a rocket speed to Mars because getting this figure wrong would likely cause disaster down the road. Very complicated mathematics is essential to make sure we hit the target required in space.
===============================================
Problem 2
As mentioned, we need high precision when it comes to anything dealing with space travel. If the calculations are wrong, then the spacecraft could crash somehow. As one example where things went wrong, engineers used the wrong values and the Mars lander ended up crashing into the planet rather than landing safely. The high cost of such space exploration missions means that it's very crucial to get precise values as much as possible, to as accurate as possible. Things like discussing a person's height isn't that essential to be very precise as we can just relay estimates to whoever we're talking to. This informal setting doesn't demand as much accuracy compared to something like a rocket launch.
The expression - 270+ 13m represents a submarine that began at a depth of 270 feet below sea
level and ascended at a rate of 13 feet per minute. What was the depth of the submarine after 7
minutes?
Select the correct answer below and, if necessary, fill in the answer box to complete your choice.
OA. The submarine was
feet below sea level after 7 minutes.
OB. The submarine will have reached sea level after 7 minutes.
Answer:
The submarine would be 179 feet below sea level
Step-by-step explanation:
m = 7
13 x 7 = 91
-270 + 91 = -179
After 7 minutes submarine was at -17 feet.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
Given that, the expression - 270+ 13m represents a submarine that began at a depth of 270 feet below sea level and ascended at a rate of 13 feet per minute.
A) Here, m=7
-270+13(7)
= -270+91
= -179
B) No
Therefore, after 7 minutes submarine was at -17 feet.
To learn more about an expression visit;
https://brainly.com/question/28170201.
#SPJ5
"Your question is incomplete, probably the complete question/missing part is:"
The expression - 270+ 13m represents a submarine that began at a depth of 270 feet below sea level and ascended at a rate of 13 feet per minute. What was the depth of the submarine after 7 minutes?
Select the correct answer below and, if necessary, fill in the answer box to complete your choice.
A. The submarine ___ was feet below sea level after 7 minutes.
(Type an integer or a decimal:)
B. The submarine will have reached sea level after 7 minutes.
A collector bought 47 coins at auction, some bronze and some silver. The bronze coins cost him $ 14 each and the silver coins, $ 18 each. If in total he spent $ 750, how many bronze coins did he buy and how many silver?
(with the steps)
please help me, it's for an exam
what is the height of the waterfall? WILL MARK BRAINLIST FOR CORRECT ANSWER.
Answer:
11 ft
Step-by-step explanation:
mark me as brainliest
Inscribed angles!!
Find A, B, and C
sum of all exterior angles equals to 360
sum of interior angles equal to 180
divide 360 by 122 to find b the rest you'll get it
as you go further in the question
describe and correct the error in solving the proportion?
Answer: Choice B
They did not perform the cross multiplication properly
The correct step should be m*24 = 8*15 which solves to m = 5
========================================================
Explanation:
In general, if we had the equation A/B = C/D, then it cross multiplies to A*D = B*C. We refer to this as cross multiplication because of the shape made when we connect the terms (to figure out what multiplies with what). The diagram below shows what I mean.
So that's why m/8 = 15/24 cross multiplies to m*24 = 8*15
Simplifying things a bit leads to 24m = 120. Then we divide both sides by 24 to fully isolate m and we get m = 120/24 = 5. Therefore, m = 5.
The population of a certain animal species decreases at a rate of 2.5%. If there are 400 of this animal in the wild, using an exponential function, predict approximately how many there will be in 4 years. Round to the nearest whole number.
Answer:
20 years
Step-by-step explanations:
You just do the work and figure it out and it gives you the answer of 20 years
can someone plz help me
Answer:
x is less than or equal to negative 14.
Step-by-step explanation:
so for now we should pretend that the greater than or equal to is an equal sign, and simplify the problem to get x alone on a side
remove 5 from each side
-x/3=1/3-5
-x/3=14/3
multiply both sides by 3
-x=14
x=-14
so we can now replace the equal sign with the equal or greater to, so x is less than or equal to -14
Find the area of the base of a box of height 4cm and lateral surface area 120cm.sq if its length is twice its breadth.
Answer:
The area of the base of a box is 1800 cm².
Step-by-step explanation:
We have:
H: is the height = 4 cm
[tex]A_{l}[/tex]: is the lateral surface area = 120 cm
L = 2B
We can find the breadth of the base by using the lateral surface area and the height:
[tex] A_{l} = H*B [/tex]
[tex] B = \frac{A}{H} = \frac{120 cm}{4 cm} = 30 cm [/tex]
Now, if the length is twice its breadth we have:
[tex] L = 2B = 2*30 cm = 60 cm [/tex]
Hence, the area of the base is:
[tex] A_{b} = B*L = 60 cm*30 cm = 1800 cm^{2} [/tex]
Therefore, the area of the base of a box is 1800 cm².
I hope it helps you!
9b+10=20b+7. What's B?
Answer:
3/11
Step-by-step explanation:
9b+10=20b+7
=> 10 - 7 = 20b - 9b
=> 3 = 11b
=> 11b = 3
[tex] = > b = \frac{3}{11} [/tex]
Angela makes a pillow in the shape of a wedge to use for watching TV. The pillow is filled with 0.35\text{ m}^30.35 m 3 0, point, 35, start text, space, m, end text, cubed of fluffy material.
Complete question :
Angela makes a pillow in the shape of a wedge to use for watching TV. The pillow is filled with 0.35 m3 of fluffy material, with base 0.5 m and height 1m
What is the length of the pillow?
Answer:
1.4 m
Step-by-step explanation:
The volume of wedge is given by:
V = Area of triangle * length
Area of triangle = 1/2 * base * height
Volume of wedge = 1/2 * base * height * length
Volume of wedge = 0.35m³
0.35 = 0.5 * 0.5 * 1 * length
0.35 = 0.25 * length
Length = 0.35 / 0.25
Length = 1.4 m
Answer:
1.4
Step-by-step explanation:
KAAAAAAAAAAAAAAHN!!!!!!!!!!!!!!
A match box dimension is 4cm×2.5cm×1.5cm.What will be volume of a packet containing such 6 match boxes?How many such packets can be placed in a cardboard box whose size is 60cm×30cm×24cm?
Please help!! Question is above in the image
9514 1404 393
Answer:
$503.85
Step-by-step explanation:
The amortization formula can help with this.
A = P(r/12)/(1 -(1 +r/12)^(-n))
where P is the loan value, A is the monthly payment, r is the annual interest rate, and n is the number of monthly payments.
We want to find P. All of the other values are given.
P = A(1 -(1 +r/12)^-n)/(r/12)
P = 32.48(1 -1.012667^-18)/(0.012667) = 31.48·16.0054
P ≈ 503.85
The equivalent cash price is about $503.85.
A restaurant bill is $84.97 estimate a 20% tip
Answer: A 20% tip of $84.97 is $12.75 the total would then be $97.72
Step-by-step explanation:
Plz help me get the right answer
Answer:
Sum is the addition -8x^2+3-9x^2+3x-3 Combine like terms -17x^2+3xGraph the function represented in the table on the coordinate plane
(-2,-3), (-1,-1), (0,1) (1,3) (2,5)
Hello, the graph sould be like this. Just remember, if you want to draw a graph, you should know the x and y state. x is from left and y is from right.
In a survey of U.S. Adults, 16% say they have had someone take over their email accounts without their permission. You randomly select 250 U.S. Adults and asked them whether they have had someone take over their email accounts without their permission. Find the probability that the number of U.S. Adults who say they have had someone take over their email accounts without their permission is : a. At most 40 b. Less than 45 c. Exactly 48
Answer:
a. At most 40
Step-by-step explanation:
If we take the survey that was done as a basis then we would use the 16% that was obtained as the number of overall US adults that have had their accounts used without their permission. Assuming that the 250 selected individuals were selected at random and without bias then those 250 would also be representative of the entire population. Therefore, we would simply need to multiply the number of selected individuals by the percentage in decimal form.
16 / 100 = 0.16
250 * 0.16 = 40
Finally, we can see that roughly 40 individuals would have had their email used without permission.
A middle school principal wants to change the lunch menu at the school. The principal surveys
the students to determine how the students would feel about the changes. Which survey
method will best produce the representative sample?
help a dude out lol this is overdue
Answer:
5
Step-by-step explanation:
The right angle is 5 so that means the x is 5
Answer:
5
Step-by-step explanation:
9+6=15, 3*3=9 3*5=15 so the answer for x is 5
Juan sells a boat that he bought 5 years ago. He sells it for 60% less than he originally paid for it. If the original cost is b, write an expression that shows how much he sells the boat for
Answer:
b - 0.60b
= 0.40b
Step-by-step explanation:
The expression would be
here the original cost is b
And Juan sells it for 60% less than original price
So the expression is
= b - 0.60b
= 0.40b
This would be the expression that shows the selling price of the boat
Find the missing value. Hint: Use the number line to find the missing value. -7= -(-2)
Answer:
-9
Step-by-step explanation: I know this problem since I use khan academy too and I got the answer wrong and it helped by saying it was -9.
Sally's dance school had 60 students last year. This year there are only 48 students enrolled. By
what percent did the enrollment decrease? Show all of your work to justify your answer.
Answer:
20%
Step-by-step explanation:
60-48=12
changed ÷ original x 100%
= 12 ÷ 60 x 100%
= 20%
ill mark brainlist plss help
he is going to need 37.5 ounces I guess
You have a sack of 90 balls. 35 blue, 30 green and 25 pink. If you randomly pull one ball out of the bag, what is the probability of pulling a green ball?
Answer:
P(Green ball) = 1/3
Step-by-step explanation:
You have a sack of 90 balls. 35 blue, 30 green and 25 pink. If you randomly pull one ball out of the bag, what is the probability of pulling a green ball?
The Probability of pulling a green ball =
P(Green ball) =
Number of green balls/ Total number of balls
= 30 green balls/90 balls
P(Green ball) = 1/3