Answer:
Step-by-step explanation:
perimeter P= 2L+2W
360=2(L+W) divide by 2
180=L+W
we know the L=100
180=100+W
W=80
-2=-2/3x
write in standard form pls answer quick
Answer:
2x=6
Step-by-step explanation:
3/4x-3=2/5 rewrite the equation without fractions
Answer:
0.75x - 3 = 0.40
Step-by-step explanation:
3/4 = 0.75, 2/5 = 0.40
Whats the answer for number 13?
Answer: option 3
Step-by-step explanation:
so you would do
-2=3(1)-5
-2=3-5
-2=-2
someone please help me
Pencils come in packages of 20 and signs come in packages of 12 she wants to buy the same number of pencils and pens what is the least number of pencil and pen she needs to buy
Performing LCM, the least number of pencils and pens that she needs to buy are 60 pencils and 60 pens.
LCM refers to the least common multiple. The LCM of two or more numbers is the one that can divide all the numbers by the single number itself.
Pencils come in packages of 20 and pens come in packages of 12.
So, the possible lowest common multiplier is LCM of 20 and 12, and it is 60.
So she has to buy 3 packages of pencils (60/20 = 3 ) as well 5 packages of pens ( 60/12 = 5 ).
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I don’t know the answer please help !
Answer:
1. 24
2. 24
3. -24
4. -24
I don`t know why some of the answers are 10, I think those are just trick ones. The answers are only in 24s
Answer:
the first one is 24
the second one is 24
the third one is -24
the fourth one is -24
Step-by-step explanation:
the first one is a positive because two negative multiplied by each other make a positive. the second one 6 times 4 is 24:). and the third and fourth one,when there is a positive and and a negative multiplied by each other it will always become a negative. HOPE THIS HELPS have a good one:)
Can someone help me solve this question? | x-9 | +7 = 8
Answer:
x = 8
x = 10
Step-by-step explanation:
lx -9l + 7 = 8
lx - 9l + 7 - 7 = 8 - 7
lx - 9l = 1
Split into a positive and a negative case.
x - 9 = 1 and - (x - 9) = 1
Add nine to both sides
x - 9 + 9 = 1 + 9
x = 10
- (x - 9) = 1
Subtract 9 from both sides
- 8 = - x
Multiply both sides by negative 1
x = 8
what is the solution to -6(3a+4)=3a-3
Answer:
a = -1
Step-by-step explanation:
-6(3a+4) = 3a-3
-18a-24 = 3a-3
-24+3 = 3a+18a
21a = -21
a = -21 ÷ 21
a = -1
$300 multiplied by 3% simple interest
Answer:
Mortgage
Step-by-step explanation:
"A student measures the length of a rectangularposter to the nearest centimeter and finds thatthe length is 75 cm. Another student measuresthe poster's width to the nearest tenth of acentimeter and finds that the width is 50.3 cm.How should the students report the area of theposter using the correct number of significantdigits?"
Answer:
See below
Step-by-step explanation:
The result of the calculation of area ( L x W ) should have no more significant digits than the lowest factor ....in this case 75 has only TWO significant digits...... the naswer should have the same ...two
75 * 50.3 = ~3800 cm^2
Please help. Will give brainliest if it's correct. Also plz don't just use me for points. Actually answer it bc a girl did that to me yesterday and she was rlly annoying.
Answer:
i think the first one. I hope it's right. Good luck!
Step-by-step explanation:
How do you write -0.2 repeating as a fraction?
Will give brainliest and extra points if help
Answer: c
Step-by-step explanation:
Answer:
I'm pretty sure it's B
Step-by-step explanation:
hope I helped
What is the equation of the line shown in the coordinate plane below?
help pleaseeeeeeeeeee
Answer: y=9
Step-by-step explanation:
Answer:
8 it gigi
Step-by-step explanation:
8. this o y 8u9 I 7f8d
Ned washes dishes at a constant rate. Ned can hand-wash 18 dirty dishes in 3 minutes. Choose the graph that best
represents the number of dishes, d, Ned can wash in any number of minutes, t.
Answer:
what are the graphs
Step-by-step explanation:
tell me the graphs
A new concrete courtyard will be 15' by 25' and will be filled to a depth of 3" (1/4 foot.) How many cubic yards, rounded to the nearest tenth, of concrete do you need?
The volume in cubic yards of concrete needed is 3.5 cubic yards
Calculating volumeFrom the question, we are to calculate the volume of concrete needed
From the given information,
A new concrete courtyard will be 15' by 25'
That is,
15 feet by 25 feet
Also, from the given information,
The concrete will be filled to a depth of 3" (1/4 foot.)
That is, 0.25 foot
First, we will convert the measurements to yards
NOTE: 1 foot = 1/3 yards
Thus,
15 feet = 15/3 yards = 5 yards
25 feet = 25/3 yards
0.25 foot = 0.25/3 yard = 1/12 yards
Thus,
Volume of concrete needed = 5 × 25/3 × 1/12
Volume of concrete needed = 125/36
Volume of concrete needed = 3.472 cubic yards
Volume of concrete needed ≈ 3.5 cubic yards
Hence, the volume in cubic yards of concrete needed is 3.5 cubic yards
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What is the slope of the line graphed below?
(3,1) (0,-5)
m =
A. 1/2
B. -1/2
C. -2
D. 2
Answer:
2
Step-by-step explanation:
[tex]m= \frac{y2 - y1}{x2 - x1} [/tex]
put the values you will get your answer.
Help with the picture
Answer:
(3x + 1)(x - 2) = 0
Step-by-step explanation:
move the 2 to the left to set the equation equal to 0
3x^2 - 5x - 2 = 0
factor out from here
(3x + 1)(x - 2) = 0
What is the √299 and √675
Answer:
√299=17.2916164658 √675= 25.9807621135
Step-by-step explanation:
Answer:
17.29 and 25.98
if you are rounding to the nearest whole number it would be 17 and 26
hope this helped :)
Step-by-step explanation:
certain disease has an incidence rate of 0.1%. if the false negative rate is 8% and the false positive rate is 1%, compute the probability that a person who tests positive actually has the disease.
The probability that a person who tests positive is infected is 0.0843.
Suppose the incident rate of a certain disease is 0.1 %.
The false negative rate is 8 % and the false positive rate is 1 %.
For a population of 100,00
There are 0.1 % infected = 100,00 × 0.1 % = 100
The population that is not infected is:
= 100,000 - 100 = 99900
The false negative rate is 8%, so the positive rate is 100 = 8 = 92%.
The population that is infected and has a positive result is:
= 100 × 0.92 = 92
The false positive rate is 1%.
The population that is not infected but has a positive result is:
= 99900 × 0.01 = 999
Therefore, the total positive results are:
= 92 + 999 = 1091
Therefore, the probability that a person who tests positive actually is infected is:
P ( infected / positive) = 92 / 1091 = 0.0843
Hence, the probability that a person who tests positive is infected is 0.0843.
Learn more about probability here:
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Daniel invests £2200 into his bank account.
He receives 10% per year simple interest.
How much will Daniel have after 2 years?
Give your answer to the nearest penny where appropriate.
Answer:
£440
Step-by-step explanation:
10% of 2200 = 220
So, he gets 220 per year.
220 x 2 = 440
£440
Answer:
£440
Step-by-step explanation:
According to the question,
Daniel invests £2200 into his bank account and he receive 10% per year simple interest.
So, money he'll have after a year = 10% of 2200 = 220
Money he will have after two years = 220×2 = 440
So he will have £440 after two years
The Jayden family eats at a restaurant that is having a 15% discount promotion. Their meal cost $78.90 before the discount, and they leave a 20% tip. If the tip applies to the cost of the meal before the discount, what is the cost of the meal?
Answer:
The 15% discount means that they only pay 100%-15% = 85% of the meal's bill.
This would cost 85% * 78.65.
However, they also have to pay a 20% tip of the meal cost.
This would cost 20% * 78.65.
Step-by-step explanation:
total Cost = (85% * 78.65) + (20% * 78.65)
= 105% * 78.65
= 1.05 * 78.65
= $82.58
If a cantaloupe that weighs 3.0 pounds costs $3.87, approximately how much will a 2.22 pound cantaloupe cost?
Answer:[tex]1.29 * 2.22 = 2.86[/tex]
$2.86
Step-by-step explanation:
First we need to find the price per pound for the cantaloupe
[tex]3.87/3.0=1.29[/tex]
So one pound of cantaloupe costs $1.29
Now multiply the price per pound by the weight of the second cantaloupe
[tex]1.29*2.22=2.86[/tex]
So the price for a cantaloupe that weighs 2.22 lbs would be $2.86
Which of the following list of sides would make a right triangle?
Answer:
(3,4,5) is the answer
Step-by-step explanation:
The figure to the right has its congruent segments marked. Find the measure of AB.
A
C
B
25 meters
5 meters
Question content area bottom
Part 1
AB
enter your response here meters
Cuantos minutos hay en 4 horas
Answer:
240
Step-by-step explanation:
Answer:
240 minutos.
Step-by-step explanation:
How many minutes are in 4 hours. Multiply 60 by 4. 60x4=240 minutes.
what is something that multiplies everyday
Answer:
the amount of work my teacher gives me.
Step-by-step explanation:
i think its.......money most likey it is it gets bigger everyday
Katie works at a department store that sells shoes. She receives an employee discount for any shoes she buys at the store. If Katie paid $45.00 for a pair of shoes that was priced at $55.00, what percent discount did Katie receive on the shoes? Katie works at a department store that sells shoes. She receives an employee discount for any shoes she buys at the store. If Katie paid $45.00 for a pair of shoes that was priced at $55.00, what percent discount did Katie receive on the shoes?
Answer:
55-45=10 it's 10$ discount
[tex]\frac{10}{55}*100=18.19\%[/tex]
Step-by-step explanation:
plz help me with this...
Will give the brainliest
Urgent!!!