7th grade math help me pleaseee
Answer:
Number 3
Step-by-step explanation:
In communitive property you can flip the numbers and you will still get the same answer.
Answer:
Associative Property of Multiplication
Step-by-step explanation:
The expression -10 x 3 will equal -30 no matter the order the numbers come in. It can be either -10 x 3 or 3 x -10. This is an example of the associative property of multiplication.
What is the value of n in the equation ?
n = 6
n, = 6
n = 0
n, = 0
n = 4
n, = 4
n = 2
n, = 2
Answer:n = 6
n, = 6
n = 0
n, = 0
n = 4
n, = 4
n = 2
n, = 2
Step-by-step explanation:n = 6
n, = 6
n = 0
n, = 0
n = 4
n, = 4
n = 2
n, = 2 equal to yz7 (*970
Answer:
D.) n=6
Step-by-step explanation:
There are 176 slices of bread in 8 loaves
If there are the same number of slices in each loaf how many slices of bread are in 5 loaves
Answer:
110
Step-by-step explanation:
Divide 176 by 8 to get 22 and then multiply 22 by 5 to get 110
Answer:
110
Step-by-step explanation:
176/8 is 22 so there are 22 slices per loaf.
To find the amount of slices in 5 loaves you multiply 22 and 5 to get 110.
Hope this helped :)
Which situation is best described by this number line?
-8-7-6 -5 4 -3 -2 -1 0 1 2 3 4
5 6 7 8
Ryder owed his mom $2.50. He also owes his father $875.
Ryder owed his mom $2.50. He does some chores and makes $625
B. Ryder had $6.25. He needs to buy school supplies and ends up owing his
mother $2.50
Ryder owed his mom $2.50. He babysits his sister and makes $875
Helppp
Answer: B. Ryder had $6.25. He needs to buy school supplies and ends up owing his mother $2.50
Step-by-step explanation: The number line only has single digits and every other answers have extreme changes while B has the lowest change that fits in the number line.
Please help me!!! 10 points and I will count u as brainliest
Answer:
F or H
Step-by-step explanation:
not J because that is negative, not G because that means none, so either H or F. I'm not going to give you the whole answer but another hint is look at the circles are they circled or non circlircled. I eliminated two answers for you.
remember what your teachers saids: what does it mean for the circlies to be colored or blank.
good luck!
Aman walks 10 miles In x hours. How far does he walk In one hour? Which expression represents this?
A). 10/× miles
B). 10x miles
C). 10 + x miles
Answer:
A
Step-by-step explanation:
Hope this helps and I don't really know how to explain.
GIVING 30 POINTS AND BRAINLIEST NEED HELP QUICK
which reason justifies step 5 a. das b.sss c.asa. d.aas
Answer:
D) aas
look i wanted to tell whoever is reporting peoples answers for no reason plz STOP. It's really annoying cause if you keep doing that people will get banned for no reason. So like i said plz stop reporting for no reason
Which shows two possible values for a number represented by the point?
0
1
7 and 3
AN
27 and 1
2
2 and 2
O 2 and 2
Answer:
b
Step-by-step explanation:
If zeina has seven times as many books as ali if zeina gave ali 15 books they would eash have the same number of books how many books did each have
Answer:
Zeina had 35 books and Ali had 5 books
Step-by-step explanation:
Equations
We know Zeina has seven times as many books as Ali. If we call
x = Number of books Ali has
Then Zeina has
7x = Number of books Zeina has
We also know if Zeina gave Ali 15 books, they would have the same number of books, thus:
x + 15 = 7x - 15
Adding 15:
x + 15 +15 = 7x
Subtracting x:
15 +15 = 7x - x
Operating:
30 = 6x
Dividing by 6:
x = 30 / 6
x =5
7x = 35
Thus Zeina had 35 books and Ali had 5 books
Evaluate the function f(x) = 2x + 8, when x = 0
Answer:
8
Step-by-step explanation:
f(x) = 2x + 8
x=0
f(0) = 2(0) + 8
f(0)=0+8
f(x)=8
Answer:
8
Step-by-step explanation:
f(x)=2x+8
x=0
f(0)=2(0)+8
f(0)=0+8
F(0)=8
For each statement, select the correct null hypothesis, H0, and alternative hypothesis, Ha, in symbolic form.1. A certain type of hummingbird is known to have an average weight of 4.55 g. A researcher wonders if hummingbirds (of this same type) living in the Grand Canyon differ in weight from the population as a whole. The researcher finds a sample of 30 such hummingbirds from the Grand Canyon and calculates their average weight to be 3.75 g.A. H0:x¯=4.55, Ha:x¯<4.55.B. H0:μ=3.75, Ha:μ≠3.75.C. H0:x¯=3.75, Ha:x¯>3.75.D. H0:μ<4.55, Ha:μ=4.55.E. H0:μ=4.55, Ha:μ<4.55.F. H0:μ=4.55, Ha:μ≠4.55.2. According to the Merck Veterinary Manual, the average resting heart rate for a certain type of sheep dog is 115 beats per minute (bpm). A Montana farmer notices his aging sheep dog has been acting more lethargic than usual and wonders if her heart rate is slowing. He measures her heart rate on 15 occasions and finds a sample mean heart rate of 118.2 bpm.A. H0:μ=115, Ha:μ<115.B. H0:μ=115, Ha:μ≠115.C. H0:x¯=118.2, Ha:x¯≠118.2.D. H0:μ=115, Ha:μ>115.E. H0:x¯=115, Ha:x¯>115.F. H0:μ=118.2, Ha:μ<118.2.3. The mean height of all adult American males is 69 inches (5 ft 9 in). A researcher wonders if young American males between the ages of 18 and 21 tend to be taller than 69 inches. A random sample of 100 young American males ages 18 to 21 yielded a sample mean of 71 inches.A. H0:x¯=69, Ha:x¯>69.B. H0:μ=71, Ha:μ<71.C. H0:μ=69, Ha:μ≠69.D. H0:μ>69, Ha:μ<69.E. H0:μ=69 , Ha:μ>69.F. H0:x¯=71, Ha:x¯<71.
Answer:
F.) H0:μ=4.55, Ha:μ≠4.55
A.) H0:μ=115, Ha:μ<115
H0:μ=69 , Ha:μ>69
Step-by-step explanation:
The null and alternative hypothesis are used in hypothesis testing.
Generally, both hypothesis negatives each other, with the alternative being the opposite of the null hypothesis.
1)the mean value of the population is 4.55 ; the researcher aims to test if the mean value differs from thus value, hence, Alternative ; μ ≠ 4.55
2.) The mean resting heart rate is said to be 115 ; this is the null claim. The reaesrch aims to test if heart rate slows down with age. Hence, the alternative will be to show that mean rate lesser Than 115 as claimed (μ < 115)
3.) Theean height of the population is claimed to be 69. Researcher aims to test if some people within the population have mean height abive this said height. (μ > 69)
Solve: | −2n | + 10 = −50
(Find Solution)
Answer:
no solution
Step-by-step explanation:
| −2n | + 10 = −50
Subtract 10 from both sides.
| −2n | = −60
Since an absolute value can never equal a negative number, there is no solution.
Answer: no solution
Answer:
NO SOLUTION
Step-by-step explanation:
Since the left-hand side is always >0 the equation has no solution.
Find m
8
B
47°
8
O
8
O
47
O
90
O
180
What is the product (-2d2+s)(5d2-6s)
Answer:
its A
Step-by-step explanation:
correct on edge
A simplified model for the concentration (micrograms/milliliter) of a certain slow-reacting antibiotic in the bloodstream t hours after injection into muscle tissue is given by
f(t) = t2 ·e−t/16, t ≥ 0.
When will there be maximum concentration?
In the units given, how much is the maximum concentration?
When will the concentration dip below a level of 20.0?
Estimate from a graph when the concentration function changes concavity
Answer:
A) T = 24
b) 77.953
c) t > 63.78 , t < 5.6
d) (7.029,27.5) and (40.97,55.23)
Step-by-step explanation:
Given
F(t) = t^2 e^-t/12, t ≥ 0
a) time for maximum concentration
t = 24
b) determine maximum concentration at maximum time
F(24) = 77.953
c) determine when the concentration will dip below the level of 20.0
when t > 63.78 , t < 5.6
d) concentration function changes concavity ( estimated from a graph )
(7.029,27.5) and (40.97,55.23)
attached below is the detailed solution
The sum of all the whole numbers from 1 to 45 is subtracted from the sum of all the whole numbers from 1 to 50 as shown: (1 + 2 +....+ 50) - (1 + 2 +.....+ 45) What will be the result?
Answer:
(1+2+...+50) includes all of the numbers added until 45, meaning that our result is 46+47+48+49+50 = 240
pls mark as brainliest
The table shows the fraction of the votes that each candidate received. If 230 students voted, how many students voted for Nyemi?
Answer:
Nyemi got 138 votes.
Step-by-step explanation:
Answer:
138 students
Step-by-step explanation:
change nyemi to 6/10
1/10 of 230 is 23
23x6=138
whayts the answer giving brainliest to first 1
Answer:
C
Step-by-step explanation:
HOPE THIS HELPS :)
Kennedy has 8 feet of ribbon. She wants to cut the ribbon into smaller pieces to make bows, but first she needs to figure out how many inches of ribbon she has. Kennedy knows 12 inches = 1 foot. How many inches of ribbon does she have?
Answer:
She has 96 inches of ribbon.
Step-by-step explanation:
12 times 8 = 96.
Answer:
so 12 inches = 1 foot
she has 8 feet so,
let x be the amount of ribbon she has
12*8=x
Step-by-step explanation:
12*8=96
she has 96 inches of ribbon
Suppose a company claims that its jars of pickles weigh 68 ounces on average. It took many large samples, and about half the time, the mean weight of the sample was outside the 95% confidence interval. Which of the following would be a reasonable conclusion? A. The company's jars of pickles weigh 68 ounces on average. B. The company's jars of pickles weigh fewer than 68 ounces on average. C. The company's jars of pickles weigh more than 68 ounces on average. D. The company's jars of pickles do not weigh 68 ounces on average.
Step-by-step explanation:
The company's jars of pickles weigh fewer than 68 ounces on average. C. The company's jars of pickles weigh more than 68 ounces on average. D. The company's jars of pickles do not weigh 68 ounces on average.
This is the Answer
PLEASE HELLLP I DON"T UNDERSTAND IT!!
DOOOOOOOOOOOOOOOOOOOOOGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGYYYYYYYYYYYYYYYYYYYYYYY
Answer:
woof
Step-by-step explanation:
Brianna buys a $5400 refrigerator using an installment plan that requires 18% down and a 4.1%
interest rate. How much is her down payment?
LOL PLS HELP ME
Answer:
her down payment is her down payment.........
Step-by-step explanation:
B sus
Drag each number to the correct location on the table. Not all numbers will be used.
Jacob performed an experiment with a weighted die, numbered 1 to 6. He rolled the die 125 times and recorded the results. Complete the table below.
24
22
0.176
18
0.232
37
0.048
0.104
Answer:
Complete Table:
Result of Roll ------ Frequency ------- Experimental Probability
1 --------------------------- 22 ------------------- 0.176
2 --------------------------- 13 ------------------- 0.104
3 --------------------------- 18 ------------------- 0.144
4 --------------------------- 29 ------------------- 0.232
5 --------------------------- 37 ------------------- 0.296
6 --------------------------- 6 ------------------- 0.048
Step-by-step explanation:
Required: Complete the table
The table is divided into 3:
1. Result of Roll
2. Frequency (F)
3. Experimental Probability (P)
The relationship between (2) and (3) is:
[tex]P = \frac{F}{N}[/tex]
Where
N = Number of Rolls
N = 125
For Roll of Result = 2
Frequency = 13
The probability is calculated as thus:
[tex]P = \frac{13}{125}[/tex]
[tex]P = 0.104[/tex]
For Roll of Result = 3
Probability = 0.144
The Frequency is calculated as thus:
[tex]0.144 = \frac{F}{125}[/tex]
[tex]F = 0.144 * 125[/tex]
[tex]F = 18[/tex]
For Roll of Result = 4
Frequency = 29
The probability is calculated as thus:
[tex]P = \frac{29}{125}[/tex]
[tex]P = 0.232[/tex]
For Roll of Result = 5
Probability = 0.296
The Frequency is calculated as thus:
[tex]0.296 = \frac{F}{125}[/tex]
[tex]F = 0.296* 125[/tex]
[tex]F = 37[/tex]
For Roll of Result = 6
Frequency = 6
The probability is calculated as thus:
[tex]P = \frac{6}{125}[/tex]
[tex]P = 0.048[/tex]
For Roll of Result = 1.
To get the frequency; we subtract the sum of frequencies of roll of results 2 to 6 from the total number of rolls.
In other words:
Frequency of 1 = Total Rolls - (Frequency of 2 + Frequency of 3 + Frequency of 4 + Frequency of 5 + Frequency of 6)
Frequency of 1 = 125 - (13 + 18 + 29 + 37 +6)
Frequency of 1 = 125 - 103
Frequency of 1 = 22
The probability is calculated as thus:
[tex]P = \frac{F}{N}[/tex]
[tex]P = \frac{22}{125}[/tex]
[tex]P = 0.176[/tex]
Solve the system of equations below by graphing them with a pencil and
paper. Enter your answer as an ordered pair.
y=-x+ 2
y=-2x+6
Answer:
x=2 y=0
Step-by-step explanation:
Explanation:
just put y= -x in second equation x comes out to be 2. Then put x=2 y comes out to be 0
Joe puts his trading card collection in a folder Each page of the folder holds 9 cards. He has 1,356 trading cards Complete the statement to tell the number of pages
Joe completely fills and the number of trading cards he has left over
If he has 1,356 cards and each page he has holds 9 cards, we don't know how many pages he has, so that will be x
1,356/9x -----1,356 (# of cards) divided by 9 (cards each page holds) times x (# of pages)
Divide 9x by 9 to get x by itself -----9x/9=x
Then, what you do to one side you must do to another so divide 1,356 by 9 -----1,356/9=150.667
He needs 150 pages and has .667 left over.
Given are the functions f(x) = x ^ 2 and g(x) = (x - 2) ^ 2 + 1 How can the graph of g(x) be obtained from the graph of f(x) ?
Answer:
c because it's the opposite
Find three consecutive odd integers such that the sum of the smallest number and
twice the middle number is 10 more than the largest number.
Answer:
As the first number is 5, the second will be 7, and the third will be 9.
Step-by-step explanation:
First, let's break down what the information is telling us.
"three consecutive odd integers" means each number is 2 away from each other. So if we were to assign the variable x as the first number, the second would be x + 2 and the third would be x + 4
"sum of the smallest number and twice the middle number" refers to adding the first number and 2 times the second number. So we would write:
x + 2(x + 2)
"is 10 more than the largest number" connects the second part to an equation. This is saying the third number plus 10. So for this, we would write:
(x + 4) + 10
Now we join the information that we have written mathematically into an equation. Since we have an equation, we can solve for the first number, and hence the second and third numbers.
x + 2(x + 2) = (x + 4) + 10
x + 2x + 4 = x + 14
3x + 4 = x + 14
2x = 10
x = 5
As the first number is 5, the second will be 7, and the third will be 9.
The key idea for solving this question is to define a variable and connect it to an equation using the information provided. Try to think about how much information is needed and how many variables need to be defined.
The straight line L has equation y = 2x - 5
Find an equation of the straight line perpendicular to L which passes through (-2, 3).
Answer:
slope of perpendicular line - m = -1/2
passing through (-2,3)
thus,
y-3 = -1/2 (x+2)
or y = -1/2x +2
An equation of the straight line perpendicular to [tex]\boldsymbol{y=2x-5}[/tex] which passes through [tex]\boldsymbol{(-2,3)}[/tex] is [tex]\boldsymbol{x+2y-4=0}[/tex]
An equation of a straight line is [tex]\boldsymbol{y=2x-5}[/tex]
Compare this equation with the form [tex]\boldsymbol{y=mx+b}[/tex] where [tex]\boldsymbol{m,b}[/tex] denote slope and [tex]\boldsymbol{y-}[/tex]intercept respectively.
So,
[tex]\boldsymbol{m=2}[/tex]
As the slopes of two perpendicular lines are negative reciprocals of each other, slope of a required line is equal to [tex]n=\frac{-1}{2}[/tex]
Take [tex](x_1,y_1)=(-2,3)[/tex]
Equation of the required line is [tex]\boldsymbol{y-y_1=n(x-x_1)}[/tex]
[tex]y-3=\frac{-1}{2}(x+2)[/tex]
[tex]2y-6=-1(x+2)[/tex]
[tex]x+2y-4=0[/tex]
For more information:
https://brainly.com/question/20632687?referrer=searchResults
PLEASE HELPPP 10 points and will mark brainly!!!!!!
Answer:
-.095
Step-by-step explanation:
