Answer:
y=3/5x-2
Step-by-step explanation:
Dla każdej z liczb 20, 60, 150, 300, znajdź liczbę : a) o 10% większa, b) o 20% mniejszą, c) o 50% mniejsza,
Odpowiedź:
Prosimy sprawdzić wyjaśnienie
Wyjaśnienie krok po kroku:
Na numer: 20
a.) 10% więcej;
(1 + 10/100) * 20;
1,10 * 20 = 22
b.) 20% mniej
(1 - 20/100) * 20
0,8 * 20 = 16
c.) 50% mniej
(1 - 50/100) * 20
0,5 * 20 = 10
Dla numeru 60:
a.) 10% więcej;
(1 + 10/100) * 60;
1,10 * 60 = 66
b.) 20% mniej
(1 - 20/100) * 60
0,8 * 60 = 48
c.) 50% mniej
(1 - 50/100) * 60
0,5 * 60 = 30
Na numer 150;
a.) 10% więcej;
(1 + 10/100) * 150;
1,10 * 150 = 165
b.) 20% mniej
(1 - 20/100) * 150
0,8 * 150 = 120
c.) 50% mniej
(1 - 50/100) * 150
0,5 * 150 = 75
Dla numeru 300;
a.) 10% więcej;
(1 + 10/100) * 300;
1,10 * 300 = 33%
b.) 20% mniej
(1 - 20/100) * 300
0,8 * 300 = 240
c.) 50% mniej
(1 - 50/100) * 300
0,5 * 300 = 150
Smart people answer please
Answer:
what the other guy said
Step-by-step explanation:
lol
PLS HELP! i rly need help on this. it’s hard for me.
1: what is the name of that figure??
2: what would be the cross section from a vertical slice of the figure??
Answer:
The 3D solid shown in the image is a hexagonal pyramid. If we made a cross section with a vertical slice (top to bottom), we would have an isosceles triangle.
Useful Extra Knowledge:
However—and this isn't a question here, but just useful knowledge—if we made a cross section with a horizontal slice (left to right or right to left), we would have a regular hexagon. If it were a diagonal cross section, we would have an irregular hexagon.
Step-by-step explanation:
First, what's the difference between a sphere, a cylinder, a pyramid, a cone, and a prism? These are all 3D solids, but in your case, an explanation of what they are may be a good refresher:
A sphere is a 3D solid where every point is equidistant from the center point. Basically, it's a 3D circle. It's completely round.A prism is a 3D solid with straight, parallel sides and a polygonal base.A cylinder is a 3D solid with straight, parallel sides and a circular baseA pyramid is a 3D solid with sides that converge at a common vertex and a polygonal base.A cone is a 3D solid with sides that converge at a common vertex and a circular base.We definitely know this shape can't be a sphere! It's not completely round! Actually, take a closer look: there's no hint of a circle anywhere in the figure. It can't be a cylinder nor a cone.
This means it's either a pyramid or a prism. But, going back to the definitions above, let's redefine the difference between the two: pyramids have only one base and only triangular faces, while prisms have two bases and rectangular faces.
How many bases does this figure have? It has one base. And what shape are its faces? They're all triangles! This means we have to be looking at a pyramid.
So, you may think, that solves it. We're looking at a pyramid.
Sorry, buddy. It's not that easy. We can classify this figure even further. How do we do this? We use its base! And what type of polygon is the base? When we count the sides of the base, we find six sides, which means this shape is a hexagon. So this is a hexagonal pyramid, right?
Actually, there's one more specification we could give this. That hexagon has sides that are all equal to each other. That may not seem special to you, but there's a special term given to polygons who have equal sides and equal inner angles: they are called regular polygons.
That description matches the base of our shape, right? So, now we have the name of the figure: it's a regular hexagonal pyramid.
Now, what about the cross section? This means we're taking a piece of that solid, like cutting into a cake with a knife. Who likes cake here?
I digress. This piece, the cross section of the 3D solid, becomes a 2D shape. Now, the question asks for the shape of a vertical cross section, which means up and down, like the y-axis on the coordinate plane/Cartesian plane.
So, imagine taking a butter knife and slicing right down the middle of that bad boy. If you get the middle point exactly, you'll have two equal halves which would look like triangles with two equal sides: an isosceles triangle.
That's assuming you look straight on at them. If you veered to the side a little, you'd find a scalene triangle (a triangle with no equal sides).
But, should you miss the center a little, you'd get a trapezoid instead, because part of the top would be missing.
But I'm assuming the question is asking about a vertical slice exactly down the middle and viewed straight on. In that case, your answer is an isosceles triangle.
I droned on for a bit, I know. But hopefully this helps you understand the concept better! Have a great day!
I know this is easy but I got a diff answer so pls help. Worth 5 points
Step-by-step explanation:
[tex] \frac{5}{8} \times \frac{3}{2} \div \frac{15}{16} \\ \frac{15}{16} \times \frac{16}{15} \\ = 1[/tex]
Answer:
1
Step-by-step explanation:
5/8 x 1 1/2 / 15/16 = 1 (5/8 / 15/16 = 2/3, 2/3 x 1 1/2 =1 )
3) Solve the System of Equations using Elimination/Combinations.
-2x-y=-4
x+2y=5
Answer:
[tex]y = 2 \\ x = 1[/tex]
Step-by-step explanation:
[tex]y = 2 \\ x = 1[/tex]
A circular cylinder has a curved surface area 1320cm square and the radius of its base is 10.5cm find the height and volume of cylinder.
Answer:
h=9.51
v=3293.89
Step-by-step explanation:
hope it helps :)
Answer:
h = 9.51
v = 3293.89
Step-by-step explanation:
please mark me as brainliest
5 consecutive odd number between 40 and 60
Answer:
47 49 51 53 55
Step-by-step explanation:
Consecutive: following one another in uninterrupted succession or order; successive: six consecutive numbers, such as 5, 6, 7, 8, 9, 10. marked by logical sequence. Grammar. expressing consequence or result: a consecutive clause.
Odd number between 40 and 60: 41, 43, 45, 47, 49, 51, 53, 55, 57, 59
Answer:
The answer is 41, 43, 47, 49 and 51
How many squares are there in this diagram?
Answer:
well sense you got the answer now, ima just take the points.
Step-by-step explanation:
its a 4x4 square with 16 squares
Mister Lincoln by juices and water for the school picnic a pack of their juices box cost $5 about the six water bottles cost $3 Mister Lincoln spends $94 for a Hyundai Sonata juice boxes and bottled water.
Answer:
10 packs of juice and 15 packs of water was bought by Mr. Lincoln
Step-by-step explanation:
Mr. Lincoln buys juice and water for the school picnic. A pack of 8 juice boxes costs $5. A pack of 6 water bottles costs $3. Mr. Lincoln spends $95 for 170 juice boxes and bottles of water.
Solution:
Let x represent the number of packs of juice boxes bought by Mr. Lincoln and let y represent the number of packs of water bottles bought by Mr. Lincoln.
Each pack of juice cost $5 while each pack of water cost $3. Mr. Lincoln spends $95, therefore:
5x + 3y = 95 (1)
Each pack of juice contain 8 juice boxes and each pack of water contain 6 water bottles. Since 170 juice boxes and bottles of water was bought, therefore:
8x + 6y = 170 (2)
Solving equations (1) and (2) simultaneously. Multiply equation (1) by 2 and then subtract equation (2) from the result to get:
2x = 20
x = 10
Substitute x = 10 in equation (1):
5(10) + 3y = 95
50 + 3y = 95
3y = 45
y = 15
Hence 10 packs of juice and 15 packs of water was bought by Mr. Lincoln
Vitai ir 8 reizes vairak konfekšu neka Annai, bet Uldim ir par 10 konfektēm vairak neka Annai. Cik konfektes ir katram no bērniem, ja kopa viņiem ir 60 konfektes? Lai atrisinatu, sastadi vienadojumu!
Atbilde:
Anna = 14
Vita = 14 + 8 = 22
Uldis = 14 + 10 = 24
Soli pa solim:
Latvietis
Anna = x
Vita = x + 8
Uldis = x + 10
Kopā = 60
x + x + 8 + x + 10 = 60
3x + 18 = 60
3x = 60 - 18
3x = 42
x = 42/3
x = 14
Anna = 14
Vita = 14 + 8 = 22
Uldis = 14 + 10 = 24
Suppose f(x) = 3x^2 - 2x... Find f(-4)
A survey was given to a random sample of the residents of a town to determine whether they support a new plan to raise taxes in order to increase education spending. The survey reported a confidence interval that between 16.5% and 25.5% of the residents supports the plan. What is the margin of error on the survey? Do not write \pm± on the margin of error.
Answer:
9
Step-by-step explanation:
The confidence interval is related to margin of error ; according to the relation :
Confidence interval = mean ± margin of error
Margin of Error = (upper boundary value - lower boundary value)
Confidence interval = 16.5% and 25.5%
Margin of Error = (25.5% - 16.5%)
Margin of Error = ±9
The margin of error on the survey is 9.
We know that
Confidence interval = mean ± margin of error
And,
Margin of Error = (upper boundary value - lower boundary value)
We have Confidence interval between 16.5% and 25.5%.
upper boundary value = 25.5%
lower boundary value = 16.5%
So, Margin of Error
= 25.5% - 16.5%
=9
Therefore, Margin of Error is 9.
Lean more:https://brainly.com/question/14396648
Add.
-1 + 2 = 1
- 6 + (-5)
Answer:
-6 + -5 = -11
Step-by-step explanation:
HELP I NEED HELP ASAP
Answer:
constant... I think... sorry if it's wrong... just trying to help ;-;
Step-by-step explanation:
Hope this helped! Good luck! :)
Answer:
linear
Step-by-step explanation:
if you put it into an equation, it would be y = 5 + 2x, which is a linear (straight line) equation
HELP PELASE ASAPppppp
Answer:
sin M = NK/MK = m/n
cos K = NK/MK = m/n
=> sin M/cos K = 1
HELLLPPPPP WITHHHH MATHHHH
Answer:
54 inches
Step-by-step explanation:
6/18=7/x
6x=7(18)
6x=126
x=21
21+15=18=54
( GRADE 7 ALGEBRA). 5m + 6=_
when m=-3
Answer:
-9
Step-by-step explanation:
5m+6=
m=-3
substitute 3
5(-3)+6=-9
-15+6=-9
Answer:
-9Step-by-step explanation:
If m = -3, then multiply -3 x 5 = -15, now add 6 to that which will give you -9.
Write Each Ratio as a Percent
1. 14 losses in 50 games
2. 4/5 of the students ride the bus
3. if AB represents 25% what is the length of a line segment that is 100%?
A________________B
5ft
Answer:
28%
80%
20
Step-by-step explanation:
hope this helps
help asap pleaseeee (if u do ily)))
Answer:
B) 120
Step-by-step explanation:
180 - 60 = 120
Hope that helps!
Answer:
B. 120
Step-by-step explanation:
its bigger than 90 so i did process of elimination
Please I need help
Write the equation for a parabola with a focus at (1,-4) and a directrix at x = 2.
X=?
Answer:
Step-by-step explanation:
The directrix is a vertical line, so the parabola is horizontal. The focus lies to the left of the directrix, so the parabola opens to the left.
For a left-opening parabola:
x = a(y-k)²+h,
a < 0,
vertex (h,k)
focal length p = 1/|4a|
focus (h-p, k)
directrix: x=h+p
Apply your data
focus (1,-4)
directrix x=2
vertex (1.5,-4).
focal length p = 0.5
a = -1/|4p| = -½
x = -½(y-2)²+ ½
graph x<2/9 on a number line
Answer:
The line should begin on the right side 2 dashes (the small lines tht go throught the number line. There are 9 dashes between each whole number.)
Then the line should go left because it says x is less than 2/9. (which is right)
The line segment you should choose is the one with the open circle with an arrow going to the left.
<---O (looks like this lol.)
Can anyone please help me this these questions:
1. $.50 is what percent of $2.00
2. $.02 is what percent of $2.00
3. $2.00 is what percent of two dollars
Answer:
1.
[tex]25\%[/tex]
2.
[tex].04\%[/tex]
3.
[tex]100\%[/tex]
Answer:
1 is 25% because .50 going into 2 00 4 times or 35%
2 is 10% because 02. is 10% of 2.00
4 is 100% because its all of the 2.00
-(7p+6)-2(-1-2p) what is that simplified pls help! And explain
Answer:
-3p-4
Step-by-step explanation:
-(7p+6)-2(-1-2p)
-7p-6+2+4p
-7p+4p-6+2
-3p-6+2
-3p-4
Write an equation in slope intercept form. m=6, b=-8
Answer:
y=6x-8
Step-by-step explanation:
y=mx+b where m=slope and b=y-intercept.
‼️ PLEASEEE HELPP ‼️
Answer:
x=18
Step-by-step explanation:
When a triangle has a midline the midline (in this case "3x-43") is 1/2 of the base of the triangle (in this case "4+x") so you can then say
4+x = 2(3x-43)
Solve that out to find that x = 18
B. Find the Least Common Multiple (LCM) of the following sets of numbers.
15. 12 and 5
11. 8 and 3
12. 9 and 15
13.
14.
6 and 4
10 and 12
Answer:
11. LCM of 12 and 5 = 60
12.LCM of 8 and 3 = 24
13.LCM of 9 and 15 = 90
14.LCM of 6 and 4 = 12
15.LCM of 10 and 12 = 60
MATH HOMEWORK! 20 points
Answer:
×=-1 or x=2/3
Step-by-step explanation:
yeah yeah yeah
Answer:
x=-1 , x=2/3
Step-by-step explanation:
x=-b+/- sqr root b^2-4ac/2a
x=-1+/ sqr root 1^2-4(3)(-2)/2(3)
x=-1+/- sqr root 25/6
Split into two outcomes
x=-1+5/6
x=2/3
x=-1-5/6
x=-1
30 people liked Brand X. This is 20% of the people in a survey.
a) How many people were there in the survey?
b) What percent of the people did not like Brand X?
c) How many people did not like Brand X?
Mrs. Dyson is making trail mix for Christmas gifts. She needs 4 cups of nuts, 6 ups of raisins, and 5 cups of chocolate chips. What percent of the trail mix are
raisins
HINT: Use Part to Whole and Reduce
A.60%
B.40%
C.6%
D.15%
Answer:
b
Step-by-step explanation:
15/6=2.5
100/2.5=40
- (cd2 + 4c + 21)
simplify it?
Answer: = -cd^2 - 4c - 21
Step-by-step explanation:
It‘s suppose to read negative cd the 2 is squared - 4c - 21