Answer:
The room has a width of three metres, and a length of seven metres.
Step-by-step explanation:
This is solvable using a system of equations. First, we're told that its length is four metres more than its width:
l = w + 4
We're also told that it has a perimeter of 20, and know that the perimeter of a rectangle is equal to two times its length plus two times its length. We can plug the given perimeter into that relationship, giving us:
20 = 2l + 2w
With that, we can simply substitute our first equation into it, replacing l, and then solve for w:
20 = 2l + 2w
20 = 2(w + 4) + 2w
20 = 2w + 8 + 2w
12 = 4w
w = 3
So the width is three metres. We also know that the length is four metres more than that, telling us that it's seven metres.
We can check that my calculating the perimeter with those numbers and making sure it still matches 20
2 * 3 + 2 * 7
= 6 + 14
= 20
so the answer is good.
which of the following describes (8+9) in the expression below?
Which of these side lengths can make a triangle? (Pick 3) *
4 ft, 10 ft, and 16 ft
8 in, 9 in, and 10 in
1 cm, 4 cm, and 5 cm
5 mi, 8 mi, and 12 mi
6mm, 7mm, and 11mm
Please help ASAP
Answer:
the second, fourth and fifth
Find the gradients of line a and b
════════ ∘◦❁◦∘ ════════
Answer• Line A = 4
• Line B = (-2)
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Formula of the gradient[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]
══════════════════════════
Known that•Line A
x1 = 0
y1 = -6
x2 =5
y2 = 14
• Line B
x1 = 7
y1 = -6
x2 = -3
y2 = 14
══════════════════════════
Way to find gradient•Line A
[tex]m = \frac{y2 - y1}{x2 - x1} = \frac{14 - ( - 6)}{5 - 0} = \frac{20}{5} = 4[/tex]
•Line B
[tex]m = \frac{y2 - y1}{x2 - x1} = \frac{14 - ( - 6)}{( - 3) - 7} = \frac{20}{ - 10} = ( - 2)[/tex]
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For moderators that see this#Moderators please don't be mean, dont delete my answers just for approval from your senior or just to get the biggest moderation daily rank. This answer is long and take a lot of my time, how can you just instanly delete this? :(
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2 Increase $45 by 10% =
Answer:
i think 2.7
Step-by-step explanation:
if not have a great life
Answer:
$49.5
Step-by-step explanation:
Divide 45 by 10 = 4.5
Add 0.45 to 45 =49.5
For a science experiment, Jack adds 1 tsp of salt to 3 tsp of water. Mika adds 4 tsp
of salt to 9 tsp of water. Whose water is saltier?
Answer:
Mika
Step-by-step explanation:
Jack's water is 1/3 salty water while Mika's water is 4/9 salty water and 1/3 = 3/9. 4/9 is greater than 3/9 so mika's is saltier.
45% of z is 72. The value of z is
Answer:
z= 160
Explanation
Answer:
z=160
Step-by-step explanation:
you simply just have to do this
72×100÷45
use the table to write an equation that relates y to x
Answer:
[tex]y = \frac{3}{4} x + 10[/tex]
Step-by-step explanation:
no idea how to explain it but just trust. if you test it and say:
[tex]y = \frac{3}{4}*4 + 10[/tex]
then y would equal 13.
x is 4 on the table and y is 13 below it, so my answer, therefore, is correct.
1 Find the x-intercept as a point (x,y).
I'm not quite sure what to do can someome please help me quick. I'll make brainliest
Answer:
x,0
Step-by-step explanation:
x-intercept just means where the line crosses the x axis. the x-intercept is x,0
Answer:
X intercept is ( -1 , 2)
Step-by-step explanation:
There are 15 red beads and 24 blue beads in a bag.
Write the ratio of blue beads : red beads in its simplest form.
Answer:
8:5
Step-by-step explanation:
Number of red beads = 15
Number of blue beads = 24
ratio of beads in blue : red
= 24 : 15
= 8 : 5 ...............(reducing by 3)
Answer:
5:8
Step-by-step explanation:
you divide both parts by 3 to get simplest form. 15 divided by 3 is 5. 24 divided by three is 8 :)
Solve the simultaneous equations.
Please help
Answer:
x=1/2, y=4
Step-by-step explanation:
Double both sides of the top equation:
4x+6y=26
Now subtract boths sides of the second one from the first one:
(4x+6y) - (4x-y) = 26 - (-2)
7y = 28
so y = 4
4x-y=-2 so 4x-4=-2
4x=2
x=1/2
For this sequence, 1, 5, 25, 125, 625 ... state if it is arithmetic, geometric, or neither.
A. Arithmetic
B. Neither
C. Geometric
Answer:
Geometric sequence
Step-by-step explanation:
A geometric sequence is when you multiply or divide with a constant number. So in 1, 5, 25, 125, and 625, we're multiplying by 5 every time. I hope this helped :)
Evaluate 5y-2x when y=10 and x=3
confused on this a bit. No explanation needed
Answer:
4 in
Step-by-step explanation:
reasoning: half of a circle is the diameter the radius is half of a diameter
pls give brainliest
btw if you ever need help talk to me
btw sorry for the explanation
it wouldn't let me explain
If half of the circle is 16 inches the radios is 4 because the radios is straight line from the center to the circumference of a circle or sphere.
Answer: 4
Hope this helps~
similar right triangles plss helpp
Answer:
your añswer is c) I hope it helps!
Answer:
C
Step-by-step explanation:
Find the sum. Write your answer in standard form. Look at the screenshot below!
Step-by-step explanation:
[tex] \tt{(6 {x}^{3} + 3 {x}^{2} + 3) + (2 {x}^{3} - 5x + 1) }[/tex]
Remove the unnecessary parentheses
⟶ [tex] \tt{6 {x}^{3} + 3 {x}^{2} + 3 + 2 {x}^{3} - 5x + 1 }[/tex]
Combine like terms. Like terms are those which have the same base. Remember that only coefficients of like terms can be added or subtracted and their bases remains the same.
⟶ [tex] \tt{6 {x}^{3} + 2 {x}^{3} +3 {x}^{2} + 3 + 1 - 5x}[/tex]
⟶ [tex] \tt{8 {x}^{3} + 3 {x}^{2} + 4 - 5x}[/tex]
In standard form , the expression should be written in a way that power of variables goes from highest to lowest.
[tex] \red{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed {\underline{ \tt{8 {x}^{3} + 3 {x}^{2} - 5x + 4}}}}}}}[/tex]
Hope I helped ! ♡
Have a wonderful day / night ! ツ
▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
factor the trinomial below
x^2+15x+56
a. (x+4)(x+14)
b. (x-7)(x-8)
c. (x+7)(x+8)
d. (x-4)(x-14)
Need help will give you the brainliest
Answer:
1232
Step-by-step explanation:
1232 6th grades went on the trip because 160p multiplied by .77, the amount of chaired covered by 6th graders, is equal to 1232.
you have written 4 pages of a research paper. this is 80% of the number of pages you need to complete the paper. how many pages is the paper supposed to be?
Answer:
5
Step-by-step explanation:
4/x=80/100 cross multiply (4 and 100, 80 and x)
80x/80=400/80
=5
Please help me! This is urgent!
Answer:
her mistake was at 12-6+4
instead of adding 4 to negative six she subtracted it really should by 10-2 ad her answer should be 8
Step-by-step explanation:
~! Please help me out !~
~!¡! Congruent and Similar Polygons !¡!~
C.) Segment YZ
Step-by-step explanation:
If you map Trapezoid WXYZ into Trapezoid MNOP, Segment OP would correspond with Segment YZ.
Answer:
B, bc I'm a b
In rectangle LONG, LN = 40 and ON=24. Find LO.
Answer: LN 40
Step-by-step explanation: Because thin of the answers and how to do it
Answer: LN 40
Step-by-step explanation:
A square fits exactly inside of a circle with each of it's vertices being on the circumference of the circle. The square has sides of length x cm. The area of the circle is 56cm^2. Work out x
Answer:
[tex]5.971\ cm[/tex]
Step-by-step explanation:
The computation of x is given below:
As we know that
[tex]Area = \pi r^2\\\\56 = \pi r^2\\\\r^2 = \frac{56}{\pi} \\\\r = \sqrt{\frac{56}{\pi} }[/tex]
= 4.22
Now the diameter of the square would be similar to the diameter of the circle
So,
[tex]x\sqrt{2} = 2\times r \\\\x = \frac{2\times r}{\sqrt{2} } \\\\= \frac{2\times 4.22}{\sqrt{2} } \\\\= 5.971\ cm[/tex]
When a plot is sold for Rs. 18,700, the owner loses 15%. At what price must that plot be sold in order to gain 15%?
Answer: Rs. 25,300
Step-by-step explanation:
First find the original price of the plot:
Assume this price is x:
x * ( 1 - 15%) = 18,700
0.85x = 18,700
x = 18,700/0.85
x = Rs. 22,000
To make a gain of 15%, sell at:
= 22,000 * (1 + 15%)
= 22,000 * 1.15
= Rs. 25,300
solve equation\
PLS HELP!!!
Answer:
[tex] \frac{dy}{dx} = \frac{ - x + 2}{y - 6} [/tex]
answer
Last year, 9 companies decided to include their coupon in a local coupon pack. Each company had to print 589 copies of their coupon. How many coupons were printed in total?
Answer:
5301
Step-by-step explanation:
There are 9 companies that needed to print 589 coupons each. Multiply the two numbers:
9 * 589 = 5301
Abby is registering at a Web site and must select a six-character password.The password can contain either letters or digits.
a.How many passwords are possible if characters can be repeated? if no characters can be repeated?
b.How many passwords are possible if all characters are letters that can be repeated? if the password must contain exactly one digit? Which type of password is more secure? explain
Answer:
a. 2176782336 with repeated characters. 1402410240 with no repeated characters.
b. 7964171460 when all letters can be repeated, but not numbers. 118813760 when only one number and letters can be repeated.
I believe that the password with all letters able to repeat and numbers not being able to is the most secure password, because if someone were to guess the password there is a 1/7964171460 chance of guessing the password.
Step-by-step explanation:
A. Since there are 26 different letters and 10 different numbers, there are 36 characters we can type. If characters can be repeated then, there is 2176782336 different passwords, since on all six number there are 36 possibilities each. So, 36 x 36 x 36 x 36 x 36 x 36 or 36^6 is to evaluated to find the answer. If characters are not to be repeated, there are 1402410240 different passwords, since on the first number there are 36, second has 35, third has 34, fourth has 33, fifth has 32, and sixth has 31. So, 36 x 35 x 34 x 33 x 32 x 31 is to be evaluated to solve this.
B. Since all characters that are letters can be repeated, then there are 26 letters to use forever and 10 numbers you can use with a limit. So, 36 x 35 x 34 x 33 x 32 x 31 which is to be solved if only numbers were to be used, which is 1402410240. Then, you add that with 36 x 35^5 and 36 x 35 x 34^4 and 36 x 35 x 34 x 33^3 and 36 x 35 x 34 x 33 x 32^2. which will be 7964171460. If the password must contain one digit, then you must multiply 10 with 26^5. Since, there is 10 different digits to use for the first number and 26 letters to choose from for the other five. So, it will be 26^5 times 10 which is 118813760.
The map distance between joneville and smithtown is 1.8 in. The actual distance is 180 miles. What is the scale of this map?
Answer:
The scale is of 1:6336000
Step-by-step explanation:
The scale is given dividing the distance on the map by the real distance, in the same unit.
Each mile has 63360 inches.
We have that:
Distance on the map: 1.8 in
Real distance: 180 miles = 180*63360 = 11404800 in
Scale:
We have that 11404800/1.8 = 6,336,000, so the scale is of
1.8:11404800 = 1:6336000
10pts FOR WHEVER ANWSERS ASAP PLZ!!
Answer:
B.
Step-by-step explanation:
Both sides of equation are the same, making the amount of solutions infinite.
The set of ordered pairs below represents a relation that is a function.
{ (-2,8), (4,6), (10,4)}
Which point when added to the set would form a relation that is not a function?
(A) (06)
(B) (4.2)
(C) (-6.8)
(D) (8.10)
Answer:
B (4,2)
Step-by-step explanation:
This coordinate pair would make the relation not a function because there would be two X values that are the same.
Answer:
B
Step-by-step explanation:
Please help.
Is Algebra.