Answer:
-(18/49)=n or approximately n=-0.367
Step-by-step explanation:
our equation is: m(nx²-y)/z=5n in order to find n we need to substitute the values given in the question. when we substitute we get:
6*(n*(-2)²-(-3))/(-5)=5n
6(4n+3)/(-5)=5n (we distribute the 6 in the numerator)
24n+18/-5=5n (we multiply both sides by (-5))
24n+18=-25n (we subtract 24n from both sides)
18=-49n (divide both sides by (-49))
-(18/49)=n or approximately n=-0.367
Select all valued equal to -4/5
A -4/ -5
B- -4/ -5
C -4/5
D - -4/5
E 4/-5
Answer:
i think c and e since it will end with a negative value
3. A paint store sells 4 pt of paint for $19. Use a model to write a rate for this situation.
What does this rate mean? Show your work.
Answer:
4p = 19
p = 4.75
Step-by-step explanation:
p = cost for one pint of paint
13. One kilogram is equal to 1.000 grams
How many kilograms equal 2,570
grams?
A 257 kilograms
25.7 kilograms
2.57 kilograms
0.257 kilogram
Answer quick PLZZ no website
Answer:
2.57
Step-by-step explanation:
So we know that 1 kg equals to 1000 grams in this case however we have 2570 and to get them to kilograms you can go ahead and divide that by 1,000 because 1000 grams equals to 1 kg whenever you divide 2570 by 1,000 you end up getting 2.57 and that will be your answer.
The range of the cards is 6, the median of the cards is 7, the mean of the cards is 8, work out the missing numbers
Question:
There are 5 cards in order from smallest to largest, 5 _ _ _ _. The range of the cards is 6, the median of the cards is 7, the mean of the cards is 8, work out the missing numbers
Answer:
5, 6, 7, 11, 11 or 5, 7, 7, 10, 11
Step-by-step explanation:
Given
[tex]Range = 6[/tex]
[tex]Median = 7[/tex]
[tex]Mean = 8[/tex]
Required
Complete the blanks
Range is calculated as:
[tex]Range = Highest - Lowest[/tex]
From the given numbers, we have:
[tex]Range = 6[/tex]
[tex]Lowest = 5[/tex]
So, the equation becomes
[tex]6 = Highest - 5[/tex]
[tex]Highest = 5 + 6 = 11[/tex]
So, we have:
5 _ _ _ 11
Next,
[tex]Median = 7[/tex] means that the middle number is 7;
So, we have:
5 _ 7 _ 11
Next,
[tex]Mean = 8[/tex]
Let the two remaining blanks be x and y: 5 x 7 y 11
Where
[tex]5 \le x \le 7[/tex] and [tex]7 \le y \le 11[/tex]
So, we have:
[tex]\frac{5 + x + 7 + y + 11}{5} = 8[/tex]
Collect like terms
[tex]\frac{5 + 7+11+ x + y }{5} = 8[/tex]
[tex]\frac{23+ x + y }{5} = 8[/tex]
Cross Multiply
[tex]23 + x + y = 8 * 5[/tex]
[tex]23 + x + y = 40[/tex]
[tex]x + y = 40 - 23[/tex]
[tex]x + y = 17[/tex]
Recall that: [tex]5 \le x \le 7[/tex] and [tex]7 \le y \le 11[/tex]
Using trial by error, we have:
[tex]x + y = 17[/tex]
[tex]6 + 11 = 17[/tex]
[tex]x = 6\ and \ y = 11[/tex]
[tex]7 + 10 = 17[/tex]
[tex]x = 7\ and \ y = 10\\[/tex]
Hence, the complete cards could be: 5, 6, 7, 11, 11 or 5, 7, 7, 10, 11
The function f(x)=−3x+2
is defined over the domain −1
. Find the range of this function.
Answer:
5
Step-by-step explanation:
Plug in -1 for x to find the range.
[tex] - 3( - 1) + 2 = 5[/tex]
5 is the range.
there are 15 students in a homeroom how many different ways can they be chosen to be elected president vice president or treasurer
You are working on a banner for Friday's pep rally. The length of the banner is 3 times the width. The length is 15 feet. What is the width?
Answer:
5 feet
Step-by-step explanation:
15/3 = 5
Solve for angle S ? Please help
Answer:
s= 96
Step-by-step explanation:
s°= 48° +48° (ext. ∠ of triangle)
s°= 96°
s= 96
☆ Exterior angle of a triangle
- The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
pleasssseee helpppppp ill give brainly (if you send a link ill report you)
Answer:
sorry i am trying but i don't know what to do
Step-by-step explanation:
Answer:
The answer is 10.4 :)
Step-by-step explanation:
125 + 5 x 10.4 will give you your 180 degree angle, therefore 10.4 should be the correct answer! Hope I could help <3
In 83.41, which digit is in the tens place?
Answer: 8
Step-by-step explanation:
80 is in the tens place. second digit left of decimal
Answer:
8
Step-by-step explanation:
80 is in the tens place. second digit left of decimal
2(3x-2)+2(2x+7)=30 x=?
Answer:
x=2
Step-by-step explanation:
2(3x-2)+2(2x+7)=30
6x-4+4x+14=30
10x+10=30
10x=20
x=2
HELP Without using a calculator, match each expression to the correct point.
Answer:
[tex]1)7.81 = a[/tex]
[tex]2)3\pi = b[/tex]
[tex]3) \sqrt{73} = c[/tex]
[tex]im \: not \: 100\% \: sure \: about \: b \: and \: c[/tex]
[tex]but \: i \: think \: i \: got \: it \: right \: \\ hope \: this \: helps[/tex]
From mental and pen paper calculation we came up that a = [tex]7.\overline{81}[/tex], b = √73 and c = 3π.
What is a number line ?A number line is a horizonal line in which we can represent all our real numbers.
According to the given question without using a calculator we have to determine locations of √73, 3π and [tex]7.\overline{81}[/tex] on the number line.
For √73 we know, √64 is 8 and √81 is 9 so √73 lies between 8 and 9 on the number line and more closer to √81 as the distance between √73 and √81 is less than √64 and √73.
For 3π we know, π ≈ 3.14 so 3 times of 3 is 9 and 3 times of 14 is 42 so 3 times of .14 is .42 so it is 9 + .42 = 9.42.So it will lie between 9 and 10 and a just closer to 9 than 10.
For, [tex]7.\overline{81}[/tex] it will be in between 7 and 8 and lot closer to 8 (common sense).
learn more about number line here :
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HELP NEEDED ASAP WILL GIVE BRAINLIEST
PLSSS HELP (What are the square roots of 25?)
Answer:
5
Step-by-step explanation:
5*5=25
Answer:
The square root of 25 is 5, -5
Step-by-step explanation:
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES
Please help me ASAP!!!
A circular pizza has a diameter of 16 inches. Each slice of pizza has a central of angle 45°. What is the area of each slice of pizza?
A. 3.1 in²
B. 6.13 in²
C.25.1 in²
D. 100.5 in²
I know that the area is 8π² I just don't know which answer choice it is.
Answer:
C.
Step-by-step explanation:
Radius = 16 ÷ 2 = 8
[tex]\frac{45}{360} *8^2*\pi =25.1[/tex] (3sf)
You can first find the total area of the circle which is [tex]64\pi[/tex].
Then, you can find the area of the slice of the pizza, if you take the ratio of the angle it creates with the total angle of a circle (360.)
For example, a semicircle's are would be [tex]\frac{180}{360} *8*\pi[/tex].
Answer:
C. 25.1 in²
Step-by-step explanation:
Hope this helps
Find the slope of the line that passes through the following points: `\left(\frac{2}{5},\frac{2}{3}\right)\ \ \left(-\frac{4}{9},\frac{3}{5}\right)` Show the work/explain!
Answer:
3/50
Step-by-step explanation:
Slope m = y2-y1/x2-x1
From the coordinate
x1 = 2/5, y1 = 2/3, x2 = -4/9 and y2 = 3/5
Substitute;
m = (3/5 - 2/3)/-4/9-2/3
m = (9-10/15)/(-4-6/9)
m = -1/15/-10/9
m = -1/15 * -9/10
m = 9/150
m = 3/50
Hence the slope of the line passing through the points is 3/50
Prove that the given quadrilateral is a square. show all the work
Answer:
A square is defined as a quadrilateral with 4 sides of the same length and 4 right angles. To verify the lengths of the sides, you can use the distance formula. To find the angles, you can use the slopes of the line segments and make sure sides that form an angle have opposite reciprocal slopes.
Step-by-step explanation:
First, find the coordinates of each point. You're provided with the scale and you can just count, but to make it easier, you can label the axes.
A: (0,8)
B: (6,6)
C: (4,0)
D: (-2,2)
The distance formula is used to find the distance between any two points on the coordinate form. Here it is:
d=sqrt((y2-y1)^2 + (x2-x1)^2)
d=distance, and (x1, y1) and (x2, y2) are the points.
Find the length of each side. I'll demonstrate with two sides, AB and BC.
AB: (x1,y1)=(0,8) and (x2,y2)=(6,6)
d=sqrt((6-8)^2 + (6-0)^2)
=sqrt((-2)^2 + 6^2)
=sqrt(4+36)
=sqrt(40)=2sqrt10
BC: (x1,y1)=(6,6) and (x2,y2)=(4,0)
d=sqrt((4-6)^2 + (0-6)^2)
=sqrt((-2)^2 + (-6)^2)
=sqrt(4+36)
=sqrt(40)=2sqrt10
Do the same thing with sides CD and AD, you'll see that they both also have a length of 2sqrt10 inches. (You don't really have to simplify, I just like to.)
To verify if the sides are perpendicular, you need to find the slopes of the sides and make sure that the product of the slopes of each pair of sides that form a vertex is -1. In other words, each pair of sides that form a vertex have to have opposite reciprocal slopes. I'll demonstrate with 2 vertecies, A and B.
To find the slope, you have to use the formula m=(y2-y1)/(x2-x1). m is the slope, and again, (x1, y1) and (x2, y2) are the points you're plugging in.
To find the measure of angle A, you need to find the slopes of sides AD and AB. (These are the sides that meet to form the angle.)
AD: (x1,y1)=(0,8) and (x2,y2)=(-2,2)
m = (2 - 8)/(-2 - 0)
= -6/-2
= 3
AB: (x1,y1)=(0,8) and (x2,y2)=(6,6)
m = (6 - 8)/(6 - 0)
= -2/6
= -1/3
So AD has a slope of 3 and AB has a slope of -1/3. Now you need to make sure they have a product of -1.
-1/3 * 3 = -1
So yes, it works! As I mentioned before, you can also think of them as opposite reciprocals.
The reciprocal of 3 is 1/3. The opposite of 1/3 is -1/3. So yes, the sides are perpendicular.
Let's do it again with angle B. We have to find the slope of BC now, since we already know the slope of AB.
BC: (x1,y1)=(6,6) and (x2,y2)=(4,0)
m = (0 - 6)/(4-6)
= -6/-2
=3
So the slope is exactly the same as the slope of AD. A square is a parallelogram, so it has two pairs of opposite parallel sides. We already verified that 3 and -1/3 are opposite reciprocals, so we now know that angle B has a measure of 90 degrees as well. You can do the same for angles C and D. That way, you'll have proven that all the sides have the same length and all the angles measure 90 degrees-- so the quadrilateral ABCD matches the definition of a square.
Hope this helped!
which expression are equivalent to
A) 1/(-13)^0
B) (-1)^4
C) (-1)^7
D) 1^13
E) 1/13^-1
Answer:
A.. ....... . . ..........
Find the surface area of the rectangular prism.
9 cm
15 cm
13 cm
Answer:
SA = 894 cm²
Step-by-step explanation:
SA = (2 x 15 x 9) + (2 x 13 x 9) + (2 x 15 x 13) = 270 + 234 + 390 = 894 cm²
Answer:
894 cm²
Step-by-step explanation:
[tex]A=2(wl+hl+hw)\\=2(13*15+9*15+9*13)\\=894[/tex]
Pls help with this i jus want answers. explanation is optional
Answer:
b, d, f are all 70 degrees
a, c, g, e are all 110 degrees
Step-by-step explanation:
two angles on a straight line = 180
opposite angles on a line transecting parallel lines are called vertical lines and are equal
How would you find: the number, 3/7 of which is equal to t ?
Answer:
n = (7/3)t
Step-by-step explanation:
Represente the unknown number by n. Then write the statement symbolically, as:
(3/7)n = t
and then solve the above equation for n by multiplying both sides by (7/3):
n = (7/3)t
10.What kind of circle would you need and which direction would the arrow go if you graph x < 1.5 on a number line?
closed circle, arrow goes right
open circle, arrow goes right
closed circle, arrow goes left
open circle, arrow goes left
Help please, I’ll give you brainliest
Answer:
12
Step-by-step explanation:
What is not a true statement about the transformation shown below
Answer:
which transformation. ??
i think you didnt put a screenshot or sum
Step-by-step explanation:
How could humans harm biocrusts?
Answer:
Many human activities can be unintentionally harmful to biological crusts. The biocrusts are no match for the compressional stress caused by footprints of livestock or people or the tracks
Step-by-step explanation:
I'M GIVING BRAINLIEST TO WHOEVER ANSWERS ALL OF THE QUESTIONS CORRECTLY! PLEASE HELP ME :D
Answer:
1. 68
2. 22
3. 9
4. 7
Step-by-step explanation:
hahsidijdkejeje
Use the model to show why 522 is divisible by 9.
522 contains 9 as one of its factor, that's why it is divisible by 9.
What is Factor?A divisor of an integer n, also called a factor of n, is an integer m that may be multiplied by some integer to produce n.
Here given number = 522
Divisor = 9
Now, factors of 522 = 2 X 3 X 3 X 29
= 2 X 9 X 29
(factors of 522)/ 9 = (2 X 9 X 29)/9
= 2 X 29
= 58
Thus, 522 contains 9 as one of its factor, that's why it is divisible by 9.
Learn more about Factors from:
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You get a bagel for $1.95 and juice for $1.09. You pay with a 5-dollar bill. How much change will you get back?
Answer:
$1.96
Step-by-step explanation:
So first what you will do is add 1.09+1.95 then you get 3.04 after that you do 5-3.04 and you get 1.96. Hope I helped! Have a wonderful day!
John has 8 different flags that he wants to hang on the wall. How many different ways can the flags be arranged in a row?
Answer:
40,320 different ways
Step-by-step explanation:
Here, we want to arrange 8 flags in a row
In the row, there will be 8 places
The first place has 8 flags to be chosen from
The second place has 7 and like that
So mathematically, the number of ways that we can arrange the flags is 8 factorial ways
We have this as:
8! = 40,320 different ways