Answer:
9042.85 pounds
Step-by-step explanation:
12000×0.91^3
12000×0.753571
9042.85 pounds
Mariana buys a $10 pair of flip flops that is 15% off. How much change will Mariana receive when she buy=
them with a $20 bill.
Answer:
$11.50
Step-by-step explanation:
15% of 10 is 1.5
10-1.5=8.5
20-8.5=11.5
Which equals 4 quarts?
6 cups
16 pints
16 cups
O
12 pints
Answer:
16 cups
Step-by-step explanation:
1 quart = 4 cups
Ximena gave out a survey to some students in her school about their favorite color. students could choose between red and blue. 180 of those surveyed said their favorite color was red. 55% of the students surveyed said their favorite color was blue. how many students were surveyed in total?
Answer:
Step-by-step explanation:
what we know is that 45% of the total was 180 (they voted red)
55% of the total voted blue.
To find the total, we need to set up a cross-multiplication equation
180/45 = ?/100
180 times 100 is 18000
18000/45 = 400
400 students were surveyed in total
we can check this by getting 55% of this, and adding it to 180.
If it equals to 400, then we're right.
55% of 400 = 220
220 + 180 = 400
please give brainliest! hope this helps :)
The perimeter, p, of a square is a function of its side length, s. The perimeter of the square is 28 inches or less. What is the domain of the function for this situation
The domain of the function for this situation is; s<= 7.
What is the domain of the function?It follows from the task content that the perimeter , p, of a square is a function of its side length, s. The perimeter of the square is 28 inches or less.
On this note it follows that;
P = 4s <= 28
Hence, it follows that; s<=7.
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PLEASE HELP!!!! IN NEED OF IT
Answer:
Below in bold.
Step-by-step explanation:
This is a regular polygon so all sides are congruent, therefore:
The perimeter of the polygon = 6*34 = 204 units.
We can divide the polygon into 6 conguent triangle with height 30 and base 34.
So area of 1 triangle = 1/2*34*30 = 510.
So area of the polygon = 6 * 510 = 3060 unit^2.
Perimeter of the polygon = 6*34 = 204 units.
How many different 6-digit numbers have a sum of their digits equal to 2?
pls help
If you're talking about 6-digit numbers in base 10 (so there digits are one of the numbers 0-9), such a number can be made up of either
• two 1s and four 0s, or
• one 2 and five 0s
and the leading digit must be non-zero.
If such a number starts with 1, then there are 5 slots which can contain the other 1. So there are 5 numbers in this group.
If such a number starts with 2, the rest are 0s. So there is 1 number in this group.
Then there are only 6 numbers with 6 digits whose digital sum is 2.
110000
101000
100100
100010
100001
200000
a professor teaches four different science classes. he wants to try out a new style of exam, so during finals, he gives the new exam to 15
randomly selected students in each class. the other students take the regular exam.
what is the sample in this situation?
The sample in this situation where professor wants to try out a new style of exam, thus, during finals, is 15.
What is random sample?Random sample is the way to choose a number or sample in such a manner that each of the sample of the group has an equal probability to be chosen.
Sample is the particular group which is gathered from a data. A professor teaches four types of science classes. Professor wants to try out a new style of exam, thus, during finals,
The gives the new exam to 15 randomly selected students in each class and remaining other students take the regular exam. Thus, the sample is 15.
Hence, the sample in this situation where professor wants to try out a new style of exam, thus, during finals, is 15.
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Alright this time can somebody help?
I'm pretty sure the answer is 232cm
11x8=88
88÷2=44
44x4=176
8x7= 56
176+56=232
Correct me if I'm wrong :)
Answer:
Surface area =
160 sq cm
Step-by-step explanation:
To find surface area, you find the area of all the faces and add them together. There are 4 faces (flat surfaces) The base is a triangle and the 3 sides are also triangles. The area of a triangle is:
A = 1/2 b•h
For the base,
A = 1/2•8•7
A = 28 sq cm
For the sides, we can do one calculation and times by 3 because they are all the same.
A = 1/2•8•11
= 44 sq cm
One face is 44, 3×44 is 132 for all three faces.
Surface area =
28 + 132
= 160 sq cm
Find the values of x and y in parallelogram PQRS. PTy, TR 4x1, QT 2y, TS 5x+8
Answer:
Step-by-step explanation:
Not sure if I did this right Can someone help? Find the value of x.
Answer:
6
Step-by-step explanation:
Given :
⇒ The triangles are similar
⇒ The sides are in proportion
===============================================================
Solving :
⇒ [tex]\frac{6}{15+6} = \frac{8}{3x+10}[/tex]
⇒ [tex]\frac{6}{21}= \frac{8}{3x+10}[/tex]
⇒ [tex]\frac{2}{7} = \frac{8}{3x+10}[/tex]
⇒ [tex]\frac{1}{7}=\frac{4}{3x+10}[/tex]
⇒ 1(3x + 10) = 7(4)
⇒ 3x + 10 = 28
⇒ 3x = 18
⇒ x = 6
=============================================================
Solution :
The value of x is 6
Work out length of AB
[tex] \huge \tt \color{pink}{A}\color{blue}{n}\color{red}{s}\color{green}{w}\color{grey}{e}\color{purple}{r }[/tex]
[tex] \large\underline{ \boxed{ \sf{✰\:Note }}}[/tex]
★ 1st let's know what is the given figure is and it's related concepts for solving !
➣ Given Triangle is a right angled triangle
➣ It is having 3sides let's know what are the name of these sides
➣ 1st AB is know as hypotenuse
➣ 2nd AC and is called Base of the triangle
➣ 3rd BC whích is know as perpendicular of the triangle
➣ Hypotenuse(H):-The side of a right triangle opposite the right angle.
➣ Perpendicular(P):- Exactly upright; extending in a straight line.
➣ Base(B):- it also known as the side opposite to hypotenuse
➣Perpendicular and base are know as the leg of right angled triangle
➣ We can easily find length of one missing side by using a theorem name as "Pythagorean theorem"
➣ Pythagorean theorem :- A mathematical theorem which states that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of those of the two other sides
★ Note :- The Pythagorean theorem only applies to right triangles.
[tex] \rule{70mm}{2.9pt}[/tex]
★ Writing this theorem mathematically ★
[tex] { \boxed{✫\underline{ \boxed{ \sf{Pythagorean \: theorem \: ⇒ {Hypotenuse }^2={ Base }^2+ {Height }^2}}}✫}}[/tex]
★ Here ★
➣ Base (AC)= 22cm
➣ Perpendicular (height) (BC)= 8cm
[tex] \rule{70mm}{2.9pt}[/tex]
✝ Assumption ✝
➣ let Hypotenuse ( AB ) = "x"
[tex] \boxed{ \rm{ \pink ➛AB^2= AC^2+BC^2}}[/tex]
[tex] \rule{70mm}{2.9pt}[/tex]
✝ let's substitute values ✝
[tex]\rm{ \pink ➛x^2=22 ^2+8^2} \\ \rm{ \pink ➛x^2 = 484+ {64} } \\ \rm{ \pink ➛ {x}^{2} = 548 } \\ \rm{ \pink ➛= {x} = \sqrt{548} } \\ \rm{ \pink ➛ x = 2\sqrt{137} \: or23.4} \\ [/tex]
[tex] \rule{70mm}{2.9pt}[/tex]
Hence Hypotenuse (AB) in the given triangle is of
[tex] { \boxed{✛\underline{ \boxed{ \sf{2\sqrt{137} \: or23.4\green✓}}}✛}}[/tex]
[tex] \rule{70mm}{2.9pt}[/tex]
Hope it helps !
The square root of 8+3 times the square root of 2 + the square root of 32
Answer:
[tex]9 \sqrt{2} [/tex]
Step-by-step explanation:
[tex] \sqrt{8} + 3 \sqrt{2} + \sqrt{32} \\ \\ = \sqrt{ {2}^{2} \times 2} + 3 \sqrt{2} + \sqrt{ {2}^{4} \times 2 } \\ \\ = 2 \sqrt{2} + 3 \sqrt{2} + {2}^{2} \sqrt{2} \\ \\ = 2 \sqrt{2} + 3 \sqrt{2} + 4 \sqrt{2} \\ \\ = 9 \sqrt{2} [/tex]
The volumes of two similar figures are given. The surface area of the smaller figure is given. find the surface area of the larger figure
V=2875 m^3
V = 1472 m^3
S.A. = 928 m^2
The surface area of the larger figure is [blank] m^2
Step-by-step explanation:
the surface area of a figure is always the result of a combination of multiplication(s) of 2 dimensions (side lengths).
and the volume of 3 dimensions (side lengths).
"similar figures" means that they share the same angles. and that there is one scaling factor that applies to all sides (and all other lines like heights).
so, no matter what sides are used to calculate the surface areas and the volumes, it is the same scaling factor used for each of them.
in a multiplication of 2 sides (for the area) the scaling factor is therefore applied twice and hence squared, in a multiplication of 3 sides it is applied 3 times and therefore cubed.
let's call the scaling factor f.
1472 × f³ = 2875
and then
928 × f² = large S.A.
let's use the first to get f :
1472 × f³ = 2875
f³ = 2875 / 1472 = (125 × 23) / (64 × 23) = 125/64
f = 5/4
f² = (5/4)² = 5²/4² = 25/16
large S.A. = 928 × 25/16 = 58 × 25 = 1450 m²
what is the average of 8 and 9
Answer:
The correct answer should be 8.5 (I think) : )
Lines m and n are parallel on a coordinate plane. Lines m and n are transformed by the same rotation, resulting in image lines s and t. Which statement describes the relationship between lines s and t?
The statement that best describes the relationship between lines s and t is: Lines s and t are parallel.
What are parallel lines?Parallel lines are as those lines that does not intersect one another despite being equal to each other.
Lines s and t are said to be parallel lines because they are cut by transversal which in turn means that transversal intersect lines s and t to make it parallel lines.
Therefore the statement that best describes the relationship is :Lines s and t are parallel.
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Which is the equation of the line passing through (0, 4) and (8, 0)?
A. Y= - 1/2+ 8
B. Y= - 1/2+4
C. Y= -2x+4
D. Y= -2x+8
Answer:
B: y = -(1/2)x + 4
Step-by-step explanation:
I'll assume the x term is missing from options A and B:
IThey should read:
A. Y= - (1/2)x+ 8
B. Y= - (1/2)x+4
Use the two given points to calculate the slope of the line of the form y=mx+b, where m is the slope and b is the y-intercept (the value of y when x = 0).
(0,4) and (8,0)
Rise = (0 - 4) = -4
Run = (8 - 0) = 8
Slope, m, = -4/8 or -(1/2)
The perpendicular line has the form y = -(1/2)x + b. There are options that have a -(1/2) slope: A and B.
To narrow it down, we need to calculate a value of b.
Use y = -(1/2)x + b and solve for b using either of the two given points [(0,4) or (8,0)]. I'll use (0,4).
y = -(1/2)x + b
4 = -(1/2)(0) + b
b = 4
The equation is thus y = -(1/2)x + 4, option B
How many possible phone numbers can we make out of XXX – XXXX, where X can be any number 0-9? Show your work and leave your answer in either exponential or factorial form.
There are 10⁷ possible phone numbers from the digit 0 to 9.
What is Permutations?Permutations are different ways of arranging objects in a definite order. It can also be expressed as the rearrangement of items in a linear order of an already ordered set.
Here, there are total 10 possible digits (0 to 9) we can use to create 7 digit phone numbers.
For first place there are 10 possible digits.
similarly for second place again 10 possibilities and so on.
So total number of phone number = 10 X 10 X 10 X 10 X 10 X 10 X 10
= 10⁷
Thus, there are 10⁷ possible phone numbers from the digit 0 to 9.
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Possible phone numbers can be 10 x 9 x 8 x 7 x 6 x 5 x 4 (without repetition) = 10!/3!.
10 10 10 - 10 10 10 10= [tex]10^{7} =1,00,00,000[/tex]. (with repetition)
What is number system?A numeral system is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given set, using digits or other symbols in a consistent manner.
There are 7 digit phone number represented with a XXX-XXXX .
So the first x can be 10 different numbers
let us take
10 ___ ___ ____ ____ ____ ____, but which ever number you use, it is then used up.
So then you only have 9 numbers left
10 x 9 x ___ x ___ x ___ x ___ x ___ .
Then, once that number is used it can't be used again, so on
10 x 9 x 8 x 7 x 6 x 5 x 4 (without repetition) = 10!/3!
If the repetition takes place then,
the first place have possibilities of 10 digits
10 __ __ - __ __ ___ __
Now, again repetition is allowed again there are possibilities of 10 digits.
10 10 __- __ __ __ __
and carrying the same way,
10 10 10 - 10 10 10 10= [tex]10^{7} =1,00,00,000[/tex].
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Which equation represents a circle that contains the point (–5, –3) and has a center at (–2, 1)? distance formula: startroot (x 2 minus x 1) squared (y 2 minus y 1) squared endroot (x – 1)2 (y 2)2 = 25 (x 2)2 (y – 1)2 = 5 (x 2)2 (y – 1)2 = 25 (x – 1)2 (y 2)2 = 5
The equation of a circle that contains the point (–5, -3) and has a center at (-2, 1) is (x + 2)² + (y - 1)² = 25
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
The circle contains the point (–5, -3) and has a center at (-2, 1), hence:
[tex]radius=\sqrt{(1-(-3))^2+(-2-(-5))^2}=5\ units[/tex]
The equation is:
(x - (-2))² + (y - 1)² = 5²
(x + 2)² + (y - 1)² = 25
The equation of a circle that contains the point (–5, -3) and has a center at (-2, 1) is (x + 2)² + (y - 1)² = 25
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Work out (5 x 10-3) + (2 x 10-1) Give your answer in standard form.
Answer:
2.05 · 10^-1
Step-by-step explanation:
(5·10^-3)+(2·10^-1) = 2.05 × 10^-1
Solve for x to the nearest tenth!!!!
Answer:
√2685 is your answer
hope this will help you
Let O be an angle in quadrant IV such that sec =
17/8
Find the exact values of cot and sin.
SOMEBODY HELP! Math extra credi middle school
Step-by-step explanation:
5
A, d and e are the answer, multiplication/division never changes
6. yes, perpendicular lines are inside of each other always. how ever not all intersecting lines are perpendicular, for they're not 90° degrees.
3. ? (sorry)
4. ??
2. ?
HELP PLSSSSSSSS!!! TY!!! If the sum of four consecutive numbers is 1998, what is the third number? The third number is ?
Answer:
500
Step-by-step explanation:
Hello!
Let the smallest number be x. The next number would be x + 1, then the next would be x + 2, then x + 3.
The sum of these four is 1998.
Solve for x:
x + (x + 1) + (x + 2) + (x + 3) = 19984x + 6 = 19984x = 1992x = 498The third number is (x + 2), so simply add 2 to 498 = 500
The third number is 500.
All 4 numbers are 498, 499, 500, and 501.
Determine whether FG is tangent to OE- Justify your answer.
® yes, using pythagorean theorem, both sides equal 144
can not be determined
O yes, using pythagorean theorem, both sides of the equation equal 136
O No, using the pythagorean theorem, both sides of the equation are not equal
Answer:
D
Step-by-step explanation:
Remark
The two legs when each of them is squared = 136 by
6^2 + 10^2 = 36 + 100 = 136
The hypotenuse is 12
12^2 = 144
The answer is that it is not a right angle triangle having 2 legs and a hypotenuse. That is because both sides are not equal.
If 3n + 2 = 8, find the value of n.
Answer:
2
Step-by-step explanation:
3n+2=8
Collect like terms
3n=8-2
3n=6
Divide both sides by 3
3n÷3=6÷3
n=2
Find c. Select the letter of the solution.
Answer:140
Step-by-step explanation:
Answer:
B) sqrt(50)
Step-by-step explanation:
c=sqrt((sqrt(10)^2+sqrt(40)^2)=sqrt(10+40)=sqrt(50)
What is the center of a circle with equation (x-4)2 + y2 = 5?
Answer:
(4,0)
Step-by-step explanation:
standard equation for a circle is (x−h)^2 +(y−k)^2 =r^2
circle center: h, k with radius: r
(x-(+4)^2 + (y-0)^2 = 5
the center is (4, 0)
Ingrid and Reed want to choose a tool that will allow them to measure the volume of a box. Which tool is most useful for Ingrid and Reed to measure the volume of a box?
A school buys pens and pencils from a supplier. The supplier charges $0.05 for each pencil and $0.25 for each pen. The school pays $400 for the pens and pencils.
If the school bought 1,500 pencils, how many pens did the school buy?
please help
Answer:
1300 pens
Explanation:
Set up equations where p is pencil, q is pens
Equation's:
1st equation: 0.05p + 0.25q = 400
2nd equation: p = 1500
Insert equation 2 into 1:
0.05(1500) + 0.25q = 400
75 + 0.25q = 400
0.25q = 325
q = 325/0.25
q = 1300
F the positive z-axis points upward, an equation for a horizontal plane through the point (0,−2,−3) is
The equation for a horizontal plane through the point (0,−2,−3) is z= -3.
What is a system of equations?A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Let's assume n is the normal vector for the horizontal plane < 0, 0, 1 > .
The co-ordinate of the point is (0,−2,−3)
The general equation of a plane is -
[tex]n < x-x_0 , y - y_0, z-z_0 > =0\\\\ < 0,0,1 > \\\\0(x)+0(y+2) +1(z+3)\\\\z = -3[/tex]
Thus, The equation for a horizontal plane through the point (0,−2,−3) is z= -3.
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