Answer:
k = 2
Step-by-step explanation:
Given
5x² - kx + 40
Solution: ⅘
Required
Find k
If the solution is ⅘, then
5x² - kx + 40 = 0 where x = ⅘
Substitute ⅘ for x
5(⅘)² - k(⅘) + 40 = 0
5(16/25) - k(4/5) + 40 = 0
Multiply through by 25
5(16) - 5 * k(4) + 40 = 0
80 - 20k + 40 = 0
Collect like terms
-20k = 0 - 80 + 40
-20k = -40
Divide both sides by-20
k = 2
what is 55 2/3 + 55 2/3 + 46 1/6 + 46 1/6?
Answer:
203 2/3
Step-by-step explanation:
Add all the wholes (55+55+46+46, that gets you 202), then, convert 2/3 to sixths (4/6). Then, add the fractions (4/6+4/6+1/6+1/6, that gets you 10/6, or 1 4/6). Now, our answer is 203 4/6, which can be simplified to 203 2/3.
I GIVEEE BRAINLILSTTT
Answer:
T 9,9
U 0,9
V 8,10
because it's a reflection over y axis, everything negative will be positive
Answer:
Below
Step-by-step explanation:
The x's will be the opposite (y's will stay the same):
T=(9,9)
U=(0,9)
V=(8,10)
Geometry i need help now and could you tell me the name of the subject
Answer:
x = 16Step-by-step explanation:
5, 7 and 8 are midsegments of the given triangle.
As per property, midsegment is parallel to one of the sides and is equal to its half by measure.
Midsegment with the length of 8 is parallel to side with the length of x and is half of its size:
x/2 = 8x = 8*2x = 16Helllp plsssssssssssssaaaa
Which choice is equivalent to the fraction below?
8/13
A. 8 divided by 13
B. 8 - 13
C. 13 divided by 8
D. 8 * 13
Answer:
A
Step-by-step explanation:
8/13 = 8 divided by 13
because it is thedivided by the denominator
[tex]\left \{ {{y= numerator} \atop {x=denominator}} \right.[/tex]
Pls answer if you know the ANSWER
Answer:
I was going to answer then I realized I don't know the answer. Sorry.
Step-by-step explanation:
can someone please EXPLAIN how to find out how is 9` is `150%` is 6
Answer:
[tex]9[/tex]
Step-by-step explanation:
[tex]We\ are\ required\ to\ find\ out\ 150 \%\ of\ 6.\\Hence,\\We\ can\ also\ rewrite\ this\ statement\ as:\\150 \%\ *6\\=\frac{150}{100}*6\\=\frac{15}{10}*6\\=\frac{90}{10}=9[/tex]
A company spent 35% of its annual budget building a new machine. How much of the
companies budget was spent on the machine if annual budget is $25,000?
Which congruence criteria can be used directly from the information about triangles HIJ and MNO to prove IJ¯¯¯¯¯¯≅MN¯¯¯¯¯¯¯¯¯¯ by CPCTC? HI¯¯¯¯¯¯¯≅NO¯¯¯¯¯¯¯¯, ∠I≅∠N, ∠H≅∠O (1 point) ASA congruence AAS congruence SAS congruence HL congruence
Answer: [tex]\overline{IJ}\cong \overline{MN}[/tex]
Step-by-step explanation:
Given: In triangle HIJ and triangle MNO we have
[tex]\overline{HI}\cong \overline{NO}, \angle{I}\cong \angle{N} ,\angle{H}\cong \angle{O}[/tex]
here, HI and NN are the included side between ∠I & ∠H and ∠N and ∠O.
So , by ASA congruence rule,
ΔHIJ ≅ ΔMNO
So by CPCTC (corresponding parts of the congruent triangles are congruent)
[tex]\overline{IJ}\cong \overline{MN}[/tex]
Nancy and Lisa played 20 sets of tennis. Nancy won 12 of them. If they
played 60 sets, how many would Lisa win?
Answer:
36
Step-by-step explanation:
20*3=60
12*3=36
Its proportional
Answer:
36
Explanation:
60/20=3
12x3=36
Kevin has a stack of newspapers. Each one weighs 15 pounds. The entire stack weighs 4
1
2
pounds. How many newspapers are in the stack?
Answer:7
Step-by-step explanation:
The average price for gasoline per gallon is $3.562 if last year the average price for gasoline per gallon was $2.810 what is the approximate percent of change
Answer: It increased by 78.89%
Step-by-step explanation:
2.810 / 3.562
=0.7889
78.89%
The approximate percent of change is 26.76% increase.
What is the percentage?A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.
Given, The average price for gasoline per gallon is $3.562.
last year the average price for gasoline per gallon was $2.810.
∴ The net amount change is $(3.562 - 2.810) = $0.752.
Now to obtain percentage change we'll divide the net amount change by the original amount and multiply it by 100% which is,
= (0.752/2.810)×100%.
= 26.76% increase.
Learn more about percentages here :
https://brainly.com/question/24159063
#SPJ2
Find the midpoint of A and B where A has coordinates (-3,-5) and B has coordinates (4,4).
Answer:
([tex]\frac{1}{2}[/tex], [tex]\frac{-1}{2}[/tex])
Step-by-step explanation:
Use the midpoint formula to solve.
1) Given 2 points: ([tex]x_{1}[/tex], [tex]y_1[/tex]) and ([tex]x_2[/tex], [tex]y_2[/tex])
The midpoint formula would be ([tex]\frac{x_1+x_2}{2}[/tex], [tex]\frac{y_1+y_2}{2}[/tex]).
2) Based on this, we can easily find the midpoint of AB.
-3 would be [tex]x_1\\[/tex] -5 would be [tex]y_1[/tex] 4 would be [tex]x_2[/tex] the next 4 would be [tex]y_2[/tex]3) With this information, we can solve for the midpoint.
([tex]\frac{-3+4}{2}[/tex], [tex]\frac{-5+4}{2}[/tex]) --> ([tex]\frac{1}{2}[/tex], [tex]\frac{-1}{2}[/tex]) --> This is your answer.
This please asapppppp
Answer:
C.
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
You would just have to find the opposite of cube root which is cubed so that means a is correct
PLEASE HELP!!!!!!!!!!!!
9514 1404 393
Answer:
a Plane FGI
Step-by-step explanation:
A plane is named either by its designator (Q) or by three non-collinear points in the plane. Here, the point I must be used, as the other designated points in the plane are all on the same line. The appropriate choice is ...
Plane FGI
Question # 5 What is the constant of proportionality in the following equation? b = 1.25c
Answer:
someone will be with you in a moment
Step-by-step explanation:
Zoey read 2 books in 12 months. What was her rate of reading in books per month?
Answer:
6 months per books it's the answer
Find the mean, median, mode and range of the following data
set:
13, 2, 20, 20, 14, 16, 20, 30, 3, 40
Answer:↓↓
Step-by-step explanation:
2, 3, 13, 14, 16, 20, 20, 20, 30, 40
Mean: the average of a data set.
2 + 3 + 13 + 14 + 16 + 20 + 20 + 20 + 30 + 40 / 10 = 178/10 = 17.8
Median: the middle of the set of numbers.
16 + 20 / 2 = 36/2 = 18
Mode: the most common number in a data set.
20
Range: The difference of the smallest and highest number.
40 - 2 = 38
Find 4/5 of 6/9 in simplest form
9514 1404 393
Answer:
8/15
Step-by-step explanation:
In this context, "of" means "times." The product is ...
[tex]\dfrac{4}{5}\times\dfrac{6}{9}=\dfrac{4\cdot6}{5\cdot9}=\dfrac{3\cdot8}{3\cdot15}=\boxed{\dfrac{8}{15}}[/tex]
Please help me, time sensitive
Answer:
1) Irrational
2) Rational
3) Irrational
4) Rational
5) Rational
Step-by-step explanation:
A rational number is one that can be expressed as a ratio of 2 integers while an irrational number is one that can not be expressed like that. Another difference is that rational numbers can have finite or recurring decimals while irrational numbers have infinite and non - recurring decimals.
1) -20π is an irrational number because π contains infinite decimal digits
2) -26.23 is a rational number because it can be expressed as a ratio of 2 integers
3) -2√3 is an irrational number because √3 contains infinite decimal digits
4) -√1 is a rational number because √1 is a perfect square root and as such it can be expressed as a ratio of 2 integers.
5) 95.60 is a rational number because it can be expressed as a ratio of 2 integers
Plz help brainlest if correct
Quickly
What is the rate of change and initial value for the linear relation that includes the points shown on the table?
X Y
1 20
3 10
5 0
7 -10
A. Initial value: 20, rate of change:10
B. Initial Value: 30, rate of change:10
C. Initial Value: 25, rate of change: -5
D.Initial value: 20, rate of change: -10
Answer:
D.Initial value: 20, rate of change: -10
Step-by-step explanation:
As you see, it starts with x=1, y=20 so the initial value is 20 and as x goes up y changes by -10 so thats ur rate of change
Hope this helps! :)
which is the correct answer?
Note: (if you give me a silly or absurd answer I will report you)
Answer:
I'm not sure but I think it is letter A
Step-by-step explanation:
Because first off 0 is divisible by any integer number meaning it has to be divide by a whole number not fraction. Also, 0 + 2 = 2 then you divide that by 4 is 0.5.
translate the given relationship of two quantities into a variation statement.
Answer:
Not sure
Step-by-step explanation:
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!
Elena gets a base pay of $1,500 per month. She also earns a commission of 8% of the total sales dollars that she makes. What are Elena’s earnings for a month in which she has sales of $32,000?
Answer:
You have to divide the total sales by 8 percent. 32,000/ 0.8 =40,000
So your answer is 40,000.
Step-by-step explanation:
Answer:
4060
Step-by-step explanation:
8/100(32000)+1500=4060
Solve the system by graphing.
y - X= 17
y = 4x + 2
The solution is?
if yall help me i well help you
Answer:
The answer is D because it wants the total distance covered on the three days, not how many he walked per day (which would be B)
Step-by-step explanation:
I hope this helped :)
It was Sarah's job to fill her neighbor's bird feeders with sunflower seeds while they were on vacation.
She was given 12 cups of seeds to fill the 3 bird feeders. She filled the bird feeders for a whole week.
How many cups of seeds did Sarah put in each bird feeder each day?
Answer with a explanation
Answer:
The number of cups of seeds that Sarah put in each bird feeder each day is:
= 4/7 or 0.57 cups.
Step-by-step explanation:
a) Data and Calculations:
Number of cups of seeds = 12 cups
Number of bird feeders = 3
Therefore, each bird feeder will get 12/3 = 4 cups per week
In a week, there are 7 days.
This implies that each bird feeder will get 4/7 cups
This is equivalent to 0.57 cups for each bird feeder per day.
b) Sarah will be putting 4/7 cups of seeds in each bird feeder. When 4/7 is multiplied by 3 *7, we get a total of 12 cups, which represent the total number of cups of seed given initially to Sarah.
Answer:
The number of cups of seeds that Sarah put in each bird feeder each day is: = 4/7 or 0.57 cups.
Step-by-step explanation:
pleae help me.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
3/5
Step-by-step explanation:
I believe I'm right lol
PLEASE HELP. EMERGENCY THIS IS TIMED! It's about translations. I will mark brainiest!
A normal distribution of data has a mean of 15 and a standard deviation of 4. How many standard deviations from the
mean is 25?
Answer:
25 is 2.5 standard deviations from the mean.
Step-by-step explanation:
Normal probability distribution
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean.
In this question:
Mean of 15 and a standard deviation of 4, so [tex]\mu = 15, \sigma = 4[/tex]
How many standard deviations from the mean is 25?
We have to find Z when [tex]X = 25[/tex]. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{25 - 15}{4}[/tex]
[tex]Z = 2.5[/tex]
So 25 is 2.5 standard deviations from the mean.
Answer:
2.5
Step-by-step explanation:
i just took the test