Answer:
I believe 11 days.
Step-by-step explanation:
If you're looking for how many days until you had 8 including that day then it would be 11. But if you're just looking for days before, not including the day you got 8, your answer would be 10. Sorry if this doesn't help. Hope you have a good day/night!
Answer:
Step-by-step explanation:
set it up as an algebra equation- 20 = 2x - 8. You subtract 8 from the 20 original candy, since that’s what you have left. You end up with 16 candy.
divide by 2, for 2 candies a day, and you end up with 6.
You eat that much candy in 6 days
, when substituted for the variable, makes the equation 5 x − 3 = 7 true?
Answer:
x should equal 2
Step-by-step explanation:
5x2=10
10-3=7
What goes in blank????
Determine the solution set of x(squared) + 9x + 20 = 0 by factoring.
Answer:
[tex]x=-4,\:x=-5[/tex]
Step-by-step explanation:
[tex]x^2+9x+20=0\\\\\mathrm{Solve\:by\:factoring}\\\\\mathrm{Factor\:}x^2+9x+20:\quad \left(x+4\right)\left(x+5\right)\\\\\left(x+4\right)\left(x+5\right)=0\\\\Using\:the\:Zero\:Factor\:Principle:\\\quad\:If}\:ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)\\\\\mathrm{Solve\:}\:x+4=0:\quad x=-4\\\\\mathrm{Solve\:}\:x+5=0:\quad x=-5\\\\x=-4,\:x=-5[/tex]
Answer:
Factored form: (x+4)(x+5) = 0
x = -5 or -4
Step-by-step explanation:
To factor x^2 + 9x + 20, we need to find 2 numbers that multiply to 20 and add up to 9.
The reason for that is because when you multiply (x+a)(x+b) using FOIL, you will get x^2 + ax + bx + ab.
Anyway, 4 and 5 would satisfy this, because 4+5 = 9 and 4*5 = 20. We can then factor the equation to (x+4)(x+5).
To solve (x+4)(x+5) = 0, we need to make either x+4 = 0 or x+5 = 0. That means x can be either -5 or -4.
A larger number is five more than twice a smaller number. Their sum is 80. Find the numbers.
Answer:25 and 55
Step-by-step explanation:
if you double 25 you get 50 add five and you get 55.
55+25=80
An object is rotated 180 deg about a center, C, if and only if the two lines intersecting at C that are used for the rotation form a ___ angle.
Answer:
180°
Step-by-step explanation:
The given information are;
The of the object = 180°
Therefore, a line drawn though the a point on the preimage passing through the center of rotation
A second line is drawn from the center of rotation, towards the direction of the expected location of the image of the chosen point on the preimage which should in this case be 180° and the distance from the location of the point on the image to the given center of rotation should be the same as the distance of the point of the preimage from the given center of rotation.
Answer:90
Step-by-step explanation:
did it
A person invests 4500 dollars in a bank. The bank pays 5.75% interest compounded semi-annually. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 10000 dollars?
Answer:
Around 10.6 years
Step-by-step explanation:
5.75% of 4500 is 258.75
then we will need to subtract the current amount from the final amount.
10000-4500=5500
next
5500/258.75=21.256
finally
21.256/2=10.628
The person leaves the money in the bank until it reaches 10000 dollars.
We have given that
A person invests 4500 dollars in a bank.
The bank pays 5.75% interest compounded semi-annually.
Therefore we have,
What is compounded semi-annually?The principal of a loan or investment at the beginning of the compounding period, in this case, every six months, includes the total interest from each previous period
5.75% of 4500 is 258.75
[tex]=\frac{5.75}{100}\times 4500\\ =258.75[/tex]
Then we will need to subtract the current amount from the final amount.
10000-4500=5500
5500/258.75=21.256
21.256/2=10.628
The person leaves the money in the bank until it reaches 10000 dollars.
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Hannah competes
in a 10 km run.
She completes
the race in
2 hours.
What was her
average speed?
Answer:
5 km/h
Step-by-step explanation:
Speed is the ratio of distance to time. Hannah's speed is ...
s = d/t
s = (10 km)/(2 h) = 5 km/h
Her average speed was 5 km per hour.
question 6 Which set of coordinates does NOT represent a function?
Answer:
The first one
Step-by-step explanation:
You can't repeat coords on the x or y coordinate, meaning that the one to the left is wrong because it is the only one that repeats
Answer:
First table
Step-by-step explanation:
How do you figure out if a relation is a function? You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain(x) is matched with exactly one element in the range(y). If so, you have a function!
Let's try it on the first table; Lucky us! we found it! the value 1 and 2 repeat more than once connecting with with two DIFFERENT y values!
PLEASE HELP ME!
How much tax is owed or how much refund is expected? Tax due $ 1374 and tax withheld $678.
A. refund $696
B. refund $678
C. tax owed $696
D. tax owed $5678
Answer:
The answer is C
Step-by-step explanation:
Can anyone please help me with this?
Answer:
7.2
Step-by-step explanation:
Name two quadrilaterals that have four right angles.
Answer: Rectangle and square
Step-by-step explanation:
PLEASE HELP!!!!! WILL GIVE BRAINLIEST!!
Xiao is at the cash register of her favorite store. The total price of her items is $150. She hands the clerk a 25% off coupon. How much money will Xiao save with this coupon?
$25
$30
$37.50
$45
Answer:
$37.50
Step-by-step explanation:
The answer is $37.50
Whats a quadrilateral
I need help fast. Its 8th grade math, multiple choice question. (I added photos)
Answer:
C (5.1 + 2y + 1.2 = -2 + 2y + 8.3)
Consider the enlargement of the triangle and use the measurements to calculate the scale factor. 2 triangles have corresponding side lengths of 8 centimeters and 64 centimeters. Scale factor =.
The scale factor is the ratio of the second triangle length to the first triangle length. Then the scale factor is 8.
What is dilation?Dilation means the changing of the size of the object without changing the shape. The size of the object may be increased or decreased based on the scale factor.
Two triangles have corresponding side lengths of 8 centimeters and 64 centimeters.
Then the scale factor will be
[tex]\rm Scale \ factor = \dfrac{Side \ of \ second \ triangle }{Side \ of \ first \ triangle } \\\\\\Scale \ factor = \dfrac{64}{8}\\\\\\Scale \ factor = 8[/tex]
The scale factor is 8.
More about the dilation link is given below.
https://brainly.com/question/2856466
Answer:
The answer is 8:)
Step-by-step explanation:
-t/4=-3 solve the equation. Check your solution
Answer:
see below
Step-by-step explanation:
-t/4=-3
Multiply each side by -4
-t/4 *-4=-3*-4
t = 12
Check
-12/4 = -3
-3 = -3
WILL MARK BRANIEST FOR GOOD ANSWER AND FOR ANSWERING IT RIGHT
THE QUESTION IS ATTACHED BELOW
Answer:
The answer is C beacause it is 20 times greater than the other numbers
Which graph shows a line with constant of proportionality of 3/2
1. The stem and leaf plot gives the agesof the last 15 presidents when they were inaugurated Table 1: Key:3j5 = 35 Stem Leaf 4 3 6 7 5 1 2 4 4 5 6 6 0 1 2 4 9 7 0
Find the circumference and area of the circle. Use 3.14 for A. Round to the nearest hundredth if necessary.
12 m
.
The circumference of the circle is about
m.
The area of the circle is about
m?
Answer:
area= 452.39
circumference= 75.40
Step-by-step explanation:
circumference is equal to 2 * pi * r
area is equal to pi * r^2
circumference = 2 * pi * 12 = 75.40
area = pi * 12^2 = 452.39
hope this helps!
The number of students in chorus increased 25 percent this year. If there are 20 more students in chorus this year than there were last year, how many students are in chorus this year
Answer:
100
Step-by-step explanation:
if 25% is 20, 20*4=80
80+20=100
After a shopping spree at Target, John realized he spent three times more money than his brother Mike. They spent a total of $160. If you choose x to represent the
amount of money that Mike spent, what choice below would represent the amount of money that John spent?
Answer:
John spent around $53
Step-by-step explanation:
The equation is 3x=160
Since the "x" is already by itself on one side, divide 160 by 3
160÷3=53.333⇒
Now if that's not the way IT CAN ALSO BE:
30x3+70=160! That means John spent $90
where are vertices A located?
Answer:
(3, 4) works, but there are other correct answers.
Step-by-step explanation:
We are given 2 vertices of a right triangle.
There is an infinite number of points that can be the third vertex and form a right triangle. There is not enough information to answer with a unique point.
One answer is point (3, 4) making <A the right angle of the triangle.
HELPPPPPP PLEASE!!!
Answer:
6/h = 10/40
Step-by-step explanation:
Answer:
6/h = 10/40
Step-by-step explanation:
b x h = w
10=b
6=h
so its 6/h and 10/40
i think
lily has some chocolate with a mass of 220g. she eats 30g of the chocolate.
find the percentage of the chocolate she has not eaten
The percentage of the chocolate she has not eaten is 86.4%
How to find percentageTotal mass of chocolate = 220gMass eaten = 30gMass not eaten = Total mass of chocolate - Mass eaten
= 220 - 30
= 190g
Percentage not eaten = 190/220 × 100
= 0.86363636363636 × 100
= 86.3636363636363%
Approximately,
86.4%
Learn more about percentage:
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If a function is defined by the equation y=12x−32, which equation defines the inverse of this function?
A. y=2x+3
B. y=2x+32
C. y=2x−3
D. y=2x−32
Answer:
A. Y=2x+3
Step-by-step explanation:
because im right
If a function is defined by the equation y = 2x−32, the equation that defines the inverse of this function would be: B. y=2x+32
How to determine the inverseTo determine the inverse of the function, we would first replace x with y in the function:
y = 2x - 32
x = 2y - 32
x + 32 = 2y
Divide both sides by 2
x/2 + 32/2 = y
f−1(x) = x/2 + 32/2
The common facot between the denominatoes of the values is 2. So, when expanded, we have;
(x + 32)/2
So, the closest option that represents the inverse is B. y=2x+32.
Learn more about inverses here:
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Ra=5q-ma solve for a
Answer:
a = 5q/(r + m)
Step-by-step explanation:
ra = 5q - ma
ra + ma = 5q
a(r + m) = 5q
a = 5q/(r + m)
Please mark me the brainliest!?!
2.61 is 5.8% of what number?
Answer:
45.
Divide 48 by 100 (48/100*)
Then, multiply by the given percentage, 5.8%
→ The formula to find percentage is to divide the found number by 100 and then multiply by the closest given number.
Therefore,the [tex]2.61[/tex] is the [tex]5.8[/tex] % of the number [tex]45.[/tex]
What is the percentage?
A percentage is a number or ratio expressed as a fraction of [tex]100[/tex]. It is often denoted using the percent sign, "%".
As per the given information
Let the number is [tex]x[/tex].
[tex]\frac{2.61}{x}=\frac{5.8}{100}\\\\\\2.61(100)=5.8(x)\\\\\\261=5.8x\\\\\\x=\frac{261}{5.8}\\\\\\x=45[/tex]
Hence, the [tex]2.61[/tex] is the [tex]5.8[/tex] % of the number [tex]45.[/tex]
To know more about the percentage
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Simplify this equation please
Answer:
[tex]\boxed{2\cos^2\theta}[/tex]
Step-by-step explanation:
[tex]\cot^2\theta \sin^2\theta+\cos^2\theta[/tex]
[tex]\dfrac{1}{\tan^2 \theta} \sin^2\theta+\cos^2\theta[/tex]
[tex]\dfrac{1}{\dfrac{\sin^2\theta}{\cos^2\theta} } \sin^2\theta+\cos^2\theta[/tex]
[tex]\dfrac{\cos^2\theta}{\sin^2\theta } \sin^2\theta+\cos^2\theta[/tex]
[tex]\cos^2\theta+\cos^2\theta[/tex]
[tex]2\cos^2\theta[/tex]
The weights of the fish in a certain lake are normally distributed with a mean of 10.1 lb and a standard deviation of 2.9 lb. If 32 fish are randomly selected, what is the probability that the mean weight will be more than 10.9 lb? Express the answer as a percentage rounded to the nearest hundredth without the % sign.
Answer: 5.94%
Step-by-step explanation:
Let X be the random variable that represents the weights of the fish.
Given: Weights of the fish in a certain lake are normally distributed with a mean of 10.1 lb ([tex]\mu[/tex]) and a standard deviation of 2.9 lb ([tex]\sigma[/tex]).
sample size : n= 32
The probability that the mean weight will be more than 10.9 lb:
[tex]P(\overline{X}>10.9)=P(\dfrac{\overline{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}>\dfrac{10.9-10.1}{\dfrac{2.9}{\sqrt{32}}})\\\\=P(Z>1.56)\\\\=1-P(Z<1.56)\\\\=1- 0.9406\ \ [\text{By p-value table}]\\\\=0.0594=5.94\%[/tex]
Hence, the required probability = 5.94%.