Answer:
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Step-by-step explanation:
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7th Grade
A football player practices for 3 hours a day. This accounts for %25 of the time he is at school. How many hours is he at school?
If you want can you type or show how you got your answer.
Please help, Thank you.
33 +4 = 52 – 10
This equation can be simplified by combining like terms to become 8.2 + 4 = -10.
If "False", explain why
True
False
Find x if y =(x - 4) - 25 and y=0
What is the lateral surface area?
7 A cylindrical pipe measures 18 inches and has a diameter of 1 inch. How many square inches of metal
are used to make the pipe, which is open on both ends? Round your answer to the nearest hundredth.
1 2 3
4
5 6
7
8
9
10
Next
M
In a survey asking what is your favorite dessert, 15% of the students said their favorite dessert is candy. This means that 12 students said that candy was their favorite dessert. How many students were surveyed? (Hint you are trying to find the whole).
Answer:
80 students
Step-by-step explanation:
Ratios:
[tex]\frac{12}{x} =\frac{15}{100} \\\\15x=1200\\x=80[/tex]
Double check:
80(0.15) = 12
What is the value of 2x^2+6x-9 when x = 3
Answer:
45
Step-by-step explanation:
We have the equation 2x² + 6x + 9 and are asked to find the value when x =3.
To solve this, all we need to do is substitute all variables with "x" to 3. Then do the properties :
2x² + 6x + 9
2(3)² + 6(3) + 9
Do exponents first :
2(9) + 6(3) + 9
Now multiply the numbers with parenthesis next to them :
18 + 18 + 9
Add to get the answer :
45
Answer:
27
Step-by-step explanation:
We have the equation:
2x^2+6x-9
If x = 3, we can substitute 3 in for the x values.
We get the equation:
2([tex]3^{2}[/tex]) + 6(3) - 9
Using PEMDAS:
First, evaluate the power.
3^2 = 9
Then, multiply the numbers.
2 x 9 + 6 x 3 - 9
We get:
18 + 18 - 9
Simplify.
18 + 18 = 36
36 - 9 = 27
Hope this helps.
Please help me with this,I will give you brainliest (only if you anwser first)
Please help asap I need this
Answer:
y= x+4
y=–4–2x
Step-by-step explanation:
using the formula (x–x1)/(x1–x2)= (y–y1)/(y1–y2)
The dot plots below show the number of points scored by Sam and Daniel in 15 basketball games.
Which statement is best supported by the data in the dot plots?
A The range for Daniel's data is greater than Sam's range.
B The median for Daniel's data is the same as the median for Sam's data.
C The range for Daniel's data is the same as the range for Sam's data.
D The median of Sam's data is greater than the median of Daniel's data.
Answer:
B.
Step-by-step explanation:
Sam median = 12 which has 3 points scored.
Daniel median = 16 which has 3 points scored.
Both scored the same amount of data which is 3 points.
Both the ranges are 16. so it cant be A or C.
A salesman who is on the road visiting clients thinks that, on average, he drives the same distance each day of the week. He keeps track of his mileage for several weeks and discovers that he averages 122 miles on Mon- days, 203 miles on Tuesdays, 176 miles on Wednesdays, 181 miles on Thursdays, and 108 miles on Fridays. He wonders if this evidence contradicts his belief in a uni- form distribution of miles across the days of the week. Explain why it is not appropriate to test his hypothesis using the chi-square goodness-of-fit test.
Answer:
The conditions are not met.
Step-by-step explanation:
The conditions for the chi square test for goodness of fit are
1) the sample is a random sample
2) the variable under study is categorical
3) all expected value of the number of sample observations are greater or equal to 5.
A)The observations must be independent
B) for 2 categories the expected values must be at least 5
C) for the 3 categories the expected values must be at least 1 and no more than 20% may be smaller than 5
The observations given may not be independent i.e have equal chances of occurrences or are maybe dependent on each other in the sense that there maybe a limit for his traveling mileage or the a limit for petrol ( fuel ) usage . So if he is required to drive 500 miles in a week each day mileage depends on the other day mileage .
Also we are given the information that keeps track of his mileage for several weeks, but we are not sure if several refers to more than 5 .
As both conditions are not clearly satisfied it is not appropriate to test his hypothesis using the chi-square goodness-of-fit test.
The sample must also be a random sample.
Here he has taken the mean of all the days.
please help i will give brainlyest i promise
Answer:
the fist one
Step-by-step explanation:
Answer:
its A
Step-by-step explanation:
i did the math
WILL GIVE BRAINLIEST!!!
when you raise a number to the power with the exponent 1/2 you get it's___
A. root
B.square root
C.principal square root
D.half value
Answer:
I guess B....................
Answer:
B. square root
Step-by-step explanation:
for example
81 raise to power 1/2 is 9
square root of 81 is 9
ANSWER FOR BRAINLEST AND 10 POINTS
Answer:
0.05
Step-by-step explanation:
Hi! Ok, let's get started!
5 to the power of -2 is like dividing 5 by 10 to the second power.
That becomes 5 / 100 = 0.05
Hope that helps! :)
-Aphrodite
Solve for i
3 (.5i - 6 ) = 12
Answer:
2
Step-by-step explanation:
15i-18=12
15i= 12+18
15i= 30
I= 30/15= 2
there are between 24 to 40 students in a class. the ratio of boys to girls is 4:7. how many students are in the class.
Answer:
8 students
Step-by-step explanation:
Answer:
33
Step-by-step explanation:
There are 4:7 boys to girls, so there is a multiple of 11 people, 4 + 7 = 11.
there are 4*3 boys and 7*3 girls, 12 boys and 21 girls
please help me I really need to turn it in I hate khan academy
what us 8.4 x 10^5 in standard notation
Answer:
8x
Step-by-step explanation:
8x
Calculate the value of Molly's name if an acute angle is worth 5 points, a right angle is worth 7 points, and an obtuse angle is worth 7 points.
The total value based on the information about the angles for Molly is 19 points.
How to illustrate the angles?From the information given, it was stated that acute angle is worth 5 points, a right angle is worth 7 points, and an obtuse angle is worth 7 points.
Therefore, the total value of the points will be:
= 5 + 7 + 7
= 19
In conclusion, the number of points will be 19.
Learn more about acute angles on:
https://brainly.com/question/6979153
. John buys 3 balloons for $4.80 at Party Town. Karyn buys 4 balloons for $6 at Celebrate City. How much more did John pay per individual balloon? А $1.60 B $1.50 C $1.10
Answer:
John paid $1.60 per balloon while Karyn pain $1.50 per balloon.
Step-by-step explanation:
4.80 divided by 3 = 1.60
6 divided by 4 = 1.50
Please help!!
You rent an apartment that costs $1800 per month during the first year, but the rent
is set to go up 11.5% per year.
What would be the rent of the apartment during the
10th
year of living in the apartment? Round to the nearest tenth (if necessary).
Answer:
Rent in 10th year = $5345.90
Step-by-step explanation:
Rent of apartment during first year = $1800 per month
But growth in rent with 11.5% per year will be represented by the exponential function,
Rent in 't'th year = [tex]\text{Initial rent}(1+\frac{\text{Growth rate}}{100})^{\text{time}}[/tex]
= [tex]1800(1+\frac{11.5}{100})^t[/tex]
= [tex]1800(1.115)^t[/tex]
Therefore, rent during 10th year will be,
Rent in 10th year = [tex]1800(1.115)^{10}[/tex]
= $5345.90
Answer:
4794
Step-by-step explanation:
please help me with maths !!!
A fish was at the river-bed at a certain time. After 5 minutes, the water level of the river rose
up 2.4 cm and the water level of the river rose up again 3½cm after 4 minutes. The moment, the fish was at 14.6 cm from the river-bed and 162 cm below water level of the river.
Calculate the original height, in cm, of the water level of the river.
Answer:
170.7 cmStep-by-step explanation:
Let the original water level is x.
Use below equation to find its value:
x + 2.4 + 3 1/2 = 162 + 14.6x + 2.4 + 3.5 = 176.6x + 5.9 = 176.6x = 176.6 - 5.9x = 170.7 cm1. Oblicz:
a) Liczbę o 15% mniejszą od 60
b) Liczbę, której 15% stanowi 60
c) Jakim procentem 60 jest 15
d) O ile %większa jest 60 od 15
2. Kasia kupiła buty na wyprzedaży przecenione o 20%. Ich cena początkowa to 180 zł. W domu sprzedała je siostrze zarabiając na tym 10% wartości. Ile zapłaciła Kasi siostra za buty?
3. Liczba, którą powiększymy o 20% daje nam 30. Jaka to była liczba?
4. Za dwie książki zapłacono 42 zł. Ile kosztuje droższa z nich, jeżeli jedna jest o 25 % tańsza od drugiej?
Step-by-step explanation:
1. Oblicz:
a) Liczbę o 15% mniejszą od 60
b) Liczbę, której 15% stanowi 60
c) Jakim procentem 60 jest 15
d) O ile %większa jest 60 od 15
2. Kasia kupiła buty na wyprzedaży przecenione o 20%. Ich cena początkowa to 180 zł. W domu sprzedała je siostrze zarabiając na tym 10% wartości. Ile zapłaciła Kasi siostra za buty?
3. Liczba, którą powiększymy o 20% daje nam 30. Jaka to była liczba?
4. Za dwie książki zapłacono 42 zł. Ile kosztuje droższa z nich, jeżeli jedna jest o 25 % tańsza od drugiej?
can someone please help me
Answer:
Step-by-step explanation:
256,934
What is value of the digit 5
Step-by-step explanation:
256,934
What is value of the digit 5
ten thousand
Answer:
[tex] \huge\red{\boxed{\mathfrak{Answer}}}[/tex]
➳ Value of 5 = 50, 000 or Fifty Thousand.
✏ Place Value - It's in ten thousand's place.
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
hi
what is the surface area of a rectangular prism with the following measurements:
15 cm height
5 cm width
5 cm length
thanks
Answer:
350
Step-by-step explanation:
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12. What property of multiplication is illustrated in 9 x 7=7 x 9?
Answer:
Commutative property
Step-by-step explanation:
which polygon matches this set of ordered pairs
Answer:
A
Step-by-step explanation:
To solve this problem, we can just locate all the points listed in the problem.
The ordered pairs match the rectangle which is answer choice A.
Answer:
A
Step-by-step explanation:
The reason is that J,K,L,M are the points and the numbers of each points inside the parenthesis are the values of x-axis and y-axis.The first one is x and the second one is y. For example:(x,y) — (1,5)
Ana vacía una botella de agua llenando exactamente seis vasos de la misma clase. Decide cambiar los vasos y ahora para vaciar los vasos necesita veinticuatro vasos. ¿Con cuántos vasos de esta segunda clase vaciará uno de la primera?
Answer:
Se pueden llenar 4 vasos nuevos de segunda clase con agua de 1 vaso previamente llenado.
Step-by-step explanation:
Spanish
Hay 6 vasos llenos.
Quiere llenar 24 vasos con la misma agua que en los 6 vasos.
El número de vasos nuevos llenados por cada vaso viejo será = 24/6 = 4
Se pueden llenar 4 vasos nuevos de segunda clase con agua de 1 vaso previamente llenado.
English
There are 6 glasses filled.
He wants to fill 24 glasses with the same water as in the 6 glasses.
The number new glasses filled for each old glass will be= 24/6= 4
4 new second class glasses can be filled by water from 1 previously filled glass.
Given the function
y
=
(
−
6
+
x
−
6
x
2
)
(
−
9
−
9
x
)
,
y=(−6+x−6x
2
)(−9−9x), find
d
y
d
x
dx
dy
in any form.
Answer:
y=6+2x
Step-by-step explanation:
NO LINKS!! But someone pls help me I barely have points to keep reposting plsss The center of gravity of a triangular solid with uniform thickness and density
is at the intersection of the
of the triangle
Answer: Centroid
Step-by-step explanation: The center of gravity of a triangular solid with uniform thickness and density is the centroid which is the point at which one can balance the triangle. It is the center of mass of an object with uniform density.