Answer:
Step-by-step explanation:
Rational numbers come in 3 different forms; integers, fractions and terminating or recurring decimals such as
1
3
.
Irrational numbers are quite 'messy'. They can't be written as fractions, they are never-ending, non-repeating decimals. An example of this is the value of
π
.
A whole number can be called an integer and is either a positive or negative number, or zero. An example of this is
0
,
1
and
−
365
.
Help me please don’t use me for points
Answer:
9x+3
Step-by-step explanation:
First join the x terms, and you will find 9x (1x+8x), then join the numbers, and you get 3 (-7+10)
Hope it helps!
Answer:
9x + 3
Step-by-step explanation:
given: 1x - 7 + 8x + 10
like terms: 1x + 8x - 7 + 10
solution: 9x + 3
some people might be confused about "1x + 8x - 7 + 10" bolded part. the minus sign beside 7 would become (-7), so adding (-7) + 10 will = 3
There were 200 members at a skating club. After some new members went in, there were 256 members altogether at the skating club. What was the percentage increase of members at the skating club?
the percentage increase of members at the skating club is 28%
What is relative change?"relative change = (final value - initial value)/ initial value"
What is percent change?percent change = relative change × 100
For given example,
There were 200 members at a skating club. After some new members went in, there were 256 members altogether at the skating club.
initial value (a) = 200
final value (b) = 256
So, relative increase is,
⇒ R = (b - a)/a
⇒ R = (256 - 200)/200
⇒ R = 56/200
⇒ R = 0.28
So, the percent increase is,
⇒ P = R × 100
⇒ P = 0.28 × 100
⇒ P = 28%
Therefore, the percentage increase of members at the skating club is 28%
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Three apples and six pears cost $7.44. Four apples and ten pears cost
$11.58. Find the cost of an apple.
Answer:
$0.86
Step-by-step explanation:
Let's say the cost of the apples is A and the cost of the pears is P.
3A+6P=7.44
4A+10P=11.58
Now our best bet is elimination. We have to multiply the equations (Dont' forget about both sides, otherwise it does not work!) by the least common multiple.
We want to keep the variable A, meaning we'll have to target B. The least common multiple is 30, so now we'll multiply both equations like so:
15A+30P=37.20
12A+30P=34.74
Now we subtract the second equation from the first one. We get:
3A=2.46
And we divide both sides by 3, leaving us with
A=$0.86 or 86 cents.
covert 12/5 into a mixed number in simplest form
Answer:
2 2/5
Step-by-step explanation:
The slope of the line below is -3. Which of the following is the point-slope
form of the line?
5
(2,-2)
Answer:
[tex]y+2=-3(x-2)[/tex]
Step-by-step explanation:
The point-slope form of the straight line is given as
[tex]y-y_1=m(x-x_1)[/tex]
Here [tex]m=-3[/tex] and [tex](x_1, y_1)=(2, -2)[/tex]
[tex]y+2=-3(x-2)[/tex]
Find the unit rate. 48 kilometers in 3 hours kilometers per hour
Answer: This is a fraction equal to
48 kilometers ÷ 3 hours
We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 3
48 kilometers ÷ 3
3 hours ÷ 3
=
16 kilometers
1 hour
=
16 kilometers
hour
= 16 kilometers per hour
Step-by-step explanation:
can somone pls help me .. i will mark u brainliest !
Answer:
1. D
2. A
3. B
Step-by-step explanation:
1. Add exponents
2. Multiply exponents to outside exponent and to the 16
3. Distribute exponents
what is the defenition of a circle
Answer:
A circle is a shape consisting of all points in a plane that are a given distance from a given point, the centre; equivalently it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant
Step-by-step explanation:
Mark owns a personal training business he makes a total of $500 for every 3 client she acquired Mark hopes to one day earn $10,000 estimate how many clients mark would need
Answer:
60
Step-by-step explanation:
60x500/3=10,000
To earn $10,000 in one day Mark needs 60 clients in one day.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given that, Mark makes a total of $500 for every 3 clients she acquired.
∴ To find how many clients he needs to earn $10,000 in a day we have to divide the earnings wanted by earnings per client which is,
= (10000)÷(500/3).
= 10000×3/500.
= 100×3/5.
= 300/5.
= 60.
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A family purchased tickets for a concert and paid a total of $70. They purchased 4 child tickets and 3 adult tickets. If an adult ticket were twice as expensive as a child’s ticket, what was the cost of a child’s ticket? (Please write the equation)
Answer:
70x+4^2+3
Step-by-step explanation:
what happened to m when n is tripled in the equation m=3n
Answer:
equation is not availble
Step-by-step explanation:
Find the equation of a line parallel to the line 2x-y-9=0 and passing through the point of intersection of the lines 5x+y+4=0 and 2x+3y=1
Answer:
[tex]y=2x-3[/tex]
Step-by-step explanation:
1. Using the point of intersections, we use the substitution method to find the coordinates of the line parallel to [tex]2x-y-9=0[/tex]
[tex]5x+y+4=0[/tex]
[tex]y= -4-5x[/tex]
substituting the value of y in [tex]2x+3y=1[/tex]:
[tex]2x +3(-4-5x)=1\\\\2x-12-15x-1=0\\-13x=13x\\x= \frac{13}{-13}= -1[/tex]
substituting x=-1 in y= -4-5x:
[tex]y= 1[/tex] (upon solving, you should get this)
[tex](x,y)= (-1,1)[/tex]
2. Using y=mx+c and making y the subject of the formula 2x-y-9=0 and using the coordinate we found earlier, we will find the equation of the parallel line. (We make y the subject of the formula to find the gradient)
[tex]2x-y-9=0\\2x-9=y\\y= 2x-9[/tex]
[tex]y= mx+c\\[/tex]
-1= 2 x 1 +c
-3=c
y= 2x-3Brielle and her family went to our diner. They got ice cream cone, a brownie, and a cookie. How much did they spend on dessert?
Answer:
$6.83
Step-by-step explanation:
A brownie costs $3.45, an ice cream costs $2.43, and a cookie costs $0.95. So $3.45 + $2.43 + $0.95 = $6.83. If you need to know the change if they paid with $10.00 also . . . That would be $10.00 - $6.83 = $3.17 change.
PLease help me !!::(-(-(—(
I was wondering if my answer to this question was right:
The question is : Write the equation of the line that is parallel to x +2y = 4 and passes the point (0,5).
My answer is : y = -1/2x +5
What is the most simplified form of this
You can zoom the picture:) also please don't put anything random I really need the help!
Step-by-step explanation:
Remember the difference of squares:
a² - b² = (a + b)(a - b)
Therefore (2 + i√10)(2 + i√10)
= 2² - (i√10)²
= 4 - (10i²)
= 4 - (10)(-1) because i² = -1
= 4 + 10
= 14.
Answer:
14
Step-by-step explanation:
Note: i^2 = -1
4 + 2i(sqrt10) - 2i(sqrt10) - i^2(sqrt(100))
= 4 - (-10)
= 4 + 10
= 14
the question is in the picture
Answer:
should also = 35* if I'm not mistaken
Step-by-step explanation:
if this is wrong I'm very sorry. if no one else helps u with in the next 10 mins I suggest using socratic, it helps me
Regina eats a piece of fruit from a basket of apples, bananas, pears, and melons. Later her brother eats a piece of fruit from the basket. Do these represent independent or dependent events? Explain your answer.
Please help due in 10 minutes
Answer:
The measure of x is:
9 inches
Step-by-step explanation:
Perimeter = x + 2(x-4)
perimeter = 19 inches
then:
19 = x + 2(x-4)
19 = x + (2*x) + (2*-4)
19 = x + 2x - 8
19 = 3x - 8
19 + 8 = 3x
27 = 3x
27/3 = x
x = 9 inches.
What is 5.76 rounded to the nearest tenth?
Answer:
5.76 rounded to the nearest tenth is 5.8 or 5.80.
Im not sure how to find the missing angle
Answer:
Step-by-step explanation:
the question is asking for the length of the side labeled x
use Pythagoras' theorem to find that side
where c = x because c represents the hypotenuse in the theorem and x is on the hypotenuse in this problem
c = [tex]\sqrt{a^{2} + b^{2} }[/tex]
sooo plug in a = 14 and b = 10
c = [tex]\sqrt{14^{2} + 10^{2} }[/tex]
c = [tex]\sqrt{196+100}[/tex]
c = [tex]\sqrt{296}[/tex]
c= 17.20465..... ( that's the approx. length of side x in the problem )
since this is a right triangle we could use trigonometry to find the two angles use SOH CAH TOA to remember how those functions fit on the triangle.
Sin(Ф)=Opp/Hyp Cos(Ф)=Adj/Hyp Tan(Ф)=Opp/Adj
since we know the Hyp (hypotenuse) and the side adjacent will be the side with the 10 soooo...
Cos(Ф)=10/17.20465
Ф = arcCos(10/17.20465)
Ф = 54.4623° is the angle on the side with 10
the side with 14 then has an angle of 35.5376°
:)
HELP HELP please. I’m failing i genuinely need help i’m begging you
Answer:
Graph 1:
y-intercept = 7
Slope = -1/2 <--- (It's a fraction) (-1 over 2)
Equation: y = -1/2x + 7
________________________________
Graph 2:
y-intercept = 4
Slope = 5/6 <--- (It's a fraction) (5 over 6)
Equation: y = 5/6x + 4
_________________________________
Graph 3:
y-intercept = 9
Slope = -5/7 <--- (It's a fraction) (-5 over 7)
Equation: y = -5/7x + 9
Hope this Helps :)
Expand -7(g-8)
I will give brainiest
Answer:
-7g + 56
Step-by-step explanation:
-7 (g - 8)
-7 × g + -7 × 8
-7g + 56
Section 1 - Topic 9 Parallel and Perpendicular Lines - Part 2 (please help)
1. Write the equation of the line that it is perpendicular to y = 7x - 3 and passes through the origin.
2. Write the equation of the line that it is parallel to y = 2x + 1 and passes through the solution of the following system of equations. (3x - 2y = 10 x + y = 5
9514 1404 393
Answer:
y = -1/7x y = 2x -7Step-by-step explanation:
1. The slope of the given line is the x-coefficient, 7. The slope of the perpendicular line is the negative reciprocal of this: -1/7. Since the line goes through the origin, the y-intercept is zero.
y = -1/7x
__
2. The first part of this problem is to find the solution to the given system of equations. We can substitute for x to do that:
3(5 -y)-2y = 10
15 -5y = 10 . . . simplify
-3 +y = -2 . . . . divide by -2
y = 1, x = 4 . . . add 3 to find y; subtract y from 5 to find x
__
The second part of this problem requires we note the slope of the parallel line. It is the x-coefficient, 2. The y-intercept can be found from ...
b = y -mx = 1 -2(4) = -7
So, the desired line in y=mx+b form is ...
y = 2x -7
_____
The first attachment shows the perpendicular lines of problem 1.
The second attachment shows the parallel lines of problem 2.
Select the equation that is true.
Answer:
you didnt attach anything
Step-by-step explanation:
the garden measures 4feet by 6 feet
Tracy filled a bucket with 1.4 gallons of rain water.
1
Later, she poured out of a gallon of the water.
5
How much water is left in the bucket?
Answer: 0.4 gallons left
Step-by-step explanation:
1.4 gallon - 1 gallon = 0.4 gallons
3s -8w+6 use s=6 and w=-2
Answer: 40
Step-by-step explanation:
Fill in variables: 3(6)-8(-2)+6
Multiply: 3(6)=18; -8(-2)=16
Replace: 18+16+6
Combine like terms: 40
Answer:
40
Step-by-step explanation:
Find the area of a parallelogram with a base of 10.4 cm. and a height of 3.2 cm.
Answer:
33.28
Step-by-step explanation:
10.4 times 3.2 because area is length times width
help ASAP!!! I’m super bad at rounding numbers!! What’s the number 427 rounded to the hundreds place??
So I answered one of your rounding questions before. I am going to give you some math rules so that you can do it on your own.
If you are rounding to the hundreds place and the number in the tens place is 4 or less, the number in the hundreds place stays the same and the other places are 0.
If you are rounding to the hundreds place and the number in the tens place is 5 or more, the number in the hundreds place increases by 1 and the other places are 0.
The answer to your question is 400.
Happy to help!!
