Answer:
$30
Step-by-step explanation:
If it's 25% off, then to find the sale price we just need to subtract 25% of the original price from the original price.
Original price is 40 so we do 40 - (40 * 0.25) = 30
The length of a rectangle is 3 times its width. The perimeter is 39. Find the length and width of the rectangle.
Answer:
Let width of rectangle be x cm.
3x+x+3x+x=39
8x=39
x=39÷8
=39/8
=4/7/8
3x=39/8×3
=117/8
=14/5/8
Hence, length=14/5/8cm while width=4/7/8cm.
List all info given by the marks on the diagram.
sin(60-theta)sin(60+theta)
Step-by-step explanation:
[tex] \sin(60 - \theta) \sin(60 + \theta) \\ = \{ \sin(60) \cos( \theta) - \sin( \theta) \cos(60) \} \{ \sin(60) \cos( \theta) + \cos(60) \sin( \theta) \} \\ = \{ \frac{ \sqrt{3} }{2} \cos( \theta) - \frac{1}{2} \sin( \theta) \} \{ \frac{ \sqrt{3} }{2} \cos( \theta) + \frac{1}{2} \sin( \theta) \} \\ \\ [/tex]
from difference of two squares:
[tex]{ \boxed{(a - b)(a + b) = ( {a}^{2} - {b}^{2} ) }}[/tex]
therefore:
[tex] = \{ {( \frac{ \sqrt{3} }{2}) }^{2} { \cos }^{2} \theta \} - \{ {( \frac{ \sqrt{3} }{2} )}^{2} { \sin }^{2} \theta \} \\ \\ = \frac{3}{4} { \cos }^{2} \theta - \frac{3}{4} { \sin}^{2} \theta[/tex]
factorise out ¾ :
[tex] = \frac{3}{4} ( { \cos }^{2} \theta - { \sin}^{2} \theta) \\ \\ = { \boxed{ \frac{3}{4} \cos(2 \theta) }}[/tex]
If 2(y + 10) = 18, find the value of 1/2y
Answer:
y = -1 ?
Step-by-step explanation:
y+10= 18/2
y+10=9
y=9-10
y=-1
Answer:
2y+ 20=18
⇔2y=-2
⇔y=-1
⇒1/2y=1/2(-1)
=-1/2
Step-by-step explanation:
What is 3.6 divided by 4
Answer:
0.9. If that is the answer you are looking for.
Step-by-step explanation:
Answer:
0.9
Step-by-step explanation:
because i diveded it
Please help I wanna get an a :(
Answer:
Graph C
Step-by-step explanation:
Point T is located on Graph C at T(1, 7). To help, (x, y) = count over however many spaces horizontally, then count however many spaces vertically.
It will always be this way.
llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
Answer:
Hello
how are you
step by step explanation
This construction was created using a compass and a straightedge.
Why is the length of segment RT the same as the length of segment ST?
Answer:
if 'T' is the centre of the circle, then RT and ST are radius, it means, RT=radius and ST=radius, then ST=RT.
On a number line what is the distance between -3/2 and 6?
Answer:
7.5 unitsStep-by-step explanation:
The distance is always positive and is same as the absolute value of subtraction of the two numbers on the line.
This can be shown as:
|-3/2 - 6| = |-1.5 - 6| =|-7.5| = 7.5or
| 6 - (-3/2)| = |6 + 1.5| = |7.5| = 7.5Answer:
15/2 or 7.5
Step-by-step explanation:
Distance = x_2 - x_1
Distance = 6 - (-3)/2
Distance = 6 + 3/2
Distance = 12 + 3/2
Distance = 15/2 or 7.5
Is 6/7 rational or irrational?
Answer:
6/7 is a rational number.
The box plot represents a data set
What is the range of the middle 50% of the data?
2
3
5
7
9 10 11 12 13 14 15 16 17 18 19 20 21
8
O
12
O 17
6
Answer: Im gonna say 12
Step-by-step explanation:
Answer: the answer is 6
Step-by-step explanation: I took the quiz
Evaluate the expression when c=21 and d=4.
c-5d
[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]
Evaluate the expression when c = 21 and d = 4, c - 5d = ?[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]
Given,
c = 21d = 4c - 5d = ?Let's solve it now :-
[tex] \sf \: c - 5d \\ \\ \sf \: Substitute \: the \: values \: of \: c \: and \: d \\ \\ \sf c - 5d \\ \rightarrow \sf(21) - 5(4) \\ \sf \rightarrow21 - 20 \\ = \boxed{\boxed{\bf \: 1}}[/tex]
The value of the expression is 1.please answer the question above and pick an answer from the 3 provided
Answer:
B.
w=P-2l/2
Step-by-step explanation:
Answer:
[tex]w = \frac{p - 2l}{2} [/tex]
Step-by-step explanation:
[tex]p = 2l + 2w \\ p - 2l = 2w \\ \frac{p - 2l}{2} = \frac{2w}{2} \\ \frac{p - 2l}{2} = w[/tex]
Good luck
Find the mid points of A(3,-6) and B(-5,-2)
Answer:
[tex](-1,-4)[/tex]
Step-by-step explanation:
The mid value of 3 and -5 is -1 because both x-coordinates are 4 units away.
The mid value of -2 and -6 is -4 because both y-coordinates are 2 units away.
Can’t figure out number 35 plz help
This is science btw
Answer:
it is valley
Step-by-step explanation:
it is a valley because the lower numbers in the middle suggest that it gets higher towards the outer layers which means that it goes down in the middle like a hole and a hole is like a valley. :) hope that makes sense
express 15288 as a product of prime factors
Answer:
The prime factors are: 2 x 2 x 2 x 3 x 7 x 7 x 13
Step-by-step explanation:
Demichael orders a set of numbers on his
homework. In descending order, the first
number is 5 1/2 and the last number is 5 1/3
Which of the following numbers is NOT in
Demichael's list?
A V25
B 5.45
C 5 12 름
D 5.34
The numbers are ordered, such that the first number (the largest one) is:
(5 + 1/2)
And the last number (the smaller one) is (5 + 1/3). Only by knowing this, we will see that the correct options are A and C.
We want to see which of the following numbers is not on the list:
A) √25
B) 5.45
C) 5 12
D) 5.34
One of these numbers can only be in the list if it is larger than (5 + 1/3) and smaller than (5 + 1/2).
To see this easier, let´s rewrite both of these:
5 + 1/2 = 5 + 0.5 = 5.5
5 + 1/3 = 5 + 0.33 = 5.33
Then if a number is smaller than 5.33, the number can't be in the list.
Here we can see two numbers that are smaller than 5.33
These are:
Option A) √25 = 5 < 5.33
Option C) 5.12 < 5.33
And there is no number larger than 5.5
Concluding, the numbers that are not in Demichael's list are:
√25 and 5.12
If you want to learn more, you can read:
https://brainly.com/question/7487419
How to write 72,932 expanded form?
Answer:
70,000+ 2,000 +900 +30 + 2
in expanded form
Step-by-step explanation:
Which of the following make up your identity?
O A. Attributes
OB. Social identity
O C. Personal identity
O D. All of the above
I atom has 17 protons , 18 neutrons, and 17 electrons, what is the mass of this atom
Answer:
35.075
round to 35
Step-by-step explanation:
took the test:D
Giải bằng phương pháp bài toán M:
Min f(x) = 4x1 + 5x2 - 2x3
x1 + x2 + x3 ≤ 6
2x1 + 3x2 - x3 = 1
x1 + 2x2 - x3 = 0
x1; x2; x3 ≥ 0:
and it answer is 100000
and it is very easy
You are making a colorful birthday cake for a birthday party and needs do use 4 drops of food coloring for every 7 ounces of icing how many drops of food coloring do you need if you are using 42 ounces of icing?
You will need 24 drops of food coloring
Because 7x6=42 so we have to multiply 6 by 4 and that is 24
Enter your answer and show all the steps that you use to solve this problem in the space provided.
Find the product and explain the process and reasoning.
0.67 x 0.3 =
Answer: 0.201
Step-by-step explanation:(0.67)(0.3)
0.201 The main point to focus on when multiplying decimals is to just treat the decimals normally, as if they were whole numbers by ignoring the decimal points and multiply them together. Then put the decimal point in the answer.
Plz I rllyneed help on this give answers!
Answer:
The answer- I believe is 16.
Step-by-step explanation:
So first let's start with the square root of 4. The square root of 4 is 2 since 2x2 is 4.
Next, 45/5 is 9.
And, 125/25 is 5.
When you add all of them-
2+9+5
you get 16
Evaluate 4a for a = 5 . Express your answer in simplest form.
20
22
45
20
[tex]\\ \sf\longmapsto 4(5\dfrac{2}{3})[/tex]
[tex]\\ \sf\longmapsto 4\times \dfrac{17}{3}[/tex]
[tex]\\ \sf\longmapsto \dfrac{68}{3}[/tex]
[tex]\\ \sf\longmapsto 22\dfrac{2}{3}[/tex]
Answer: [tex]\large \boldsymbol {\sf 22\dfrac{2}{3} }[/tex]
Step-by-step explanation:
[tex]\displaystyle \large \boldsymbol {} \sf Find \ \ 4 a \ \ ; \ \ if \ a=5\frac{2}{3} \\\\1-st \ method \\\\ 5\frac{2}{3} =5+\frac{2}{3} \ \ then \\\\ 4\cdot \bigg(5+\frac{2}{3} \bigg)=4\cdot 5+ \frac{4\cdot 2}{3} =20+\frac{8}{3} =20+2\frac{2}{3} =\boldsymbol {\sf 22 \frac{2}{3} } \\\\\\ 2-nd \ \ method \\\\ 5\frac{2}{3} =\frac{5\cdot 3+2}{3} =\frac{17}{3} \\\\\\ 4\cdot \bigg( \frac{17}{3} \bigg) =\frac{4\cdot 17}{3} =\frac{68}{3} =\boldsymbol {\sf 22 \frac{2}{3}}[/tex]
please help me, if you help then thanks!
Answer:
x = 5
Step-by-step explanation:
[tex] {x}^{3} = 125[/tex]
[tex] {x}^{3} = {5}^{3} [/tex]
[tex] x = 5[/tex]
A piece of wire 100 cm long is cut into two pieces, each to be bent to make a square. The length of a side of one square is to be 4 cm longer than the length of a side of the other. How should the wire be cut?
Answer:
The two pieces will be 42 and 58 cms long.
Step-by-step explanation:
Let the length of the smallest square be x cm.
Then the length of the other will be x + 4 cm
So, as there are 4 sides in a square, we have the equation:
4x + 4(x + 4) = 100
8x + 16 = 100
8x = 84
x = 10.5 cm.
So we need 4*10.5 = 42 cms for one square and 4 * 14.5 = 58 cms for th other square.
Name the place value to which
3.695 to 4
Answer:
In this, 3.695 to 4, the tenths was rounded
Step-by-step explanation:
seven hundred twelve thousandths in standard form and expanded form
Answer:
Standard: 0.712
Expanded: 0.7 + 0.01 + 0.002
Step-by-step explanation:
Seven hundred twelve thousandths
.tenths,hundredths,thousandths
0.712
Every number in expanded fits in its place.
0.712
^ ^ ^
0.7 0.01 0.002
What is the unit rate of 825 students and 55 teachers
Answer: Ratio = 1/15
Step-by-step explanation: There are 15 students for every teacher. Simplifying 55/825 makes 1/15. Brainliest please?
