Answers
Answer:
B
Step-by-step explanation:
get x by itself
2x+3=13 - subtract 3 from both sides
2x=10 - divide each side by 2
x=5
Related Questions
What is the percents of the quantity 30% of 760
Answers
Answer:
the answer is 228
Step-by-step explanation:
30% × 760 =
(30 ÷ 100) × 760 =
(30 × 760) ÷ 100 =
22,800 ÷ 100 =
228
I hope this is what you were looking for
Answer:
228
Step-by-step explanation:
30% of 760 = [tex]\frac{30}{100}*760[/tex]
= 3 *76
= 228
need help will give brainliest
Answers
Answer:
ok so, gold has to be 0.26
bronze has to be 0.20
copper has to be 0.32
Step-by-step explanation:
Answer:
0.26 gold
0.20 bronze
0.32 copper
Step-by-step explanation:
take the frequency of each color and divide by the total number of tosses made to get the probability
A robot's height is 120 centimeters. How tall is the robot in millimeters? Record your answer and fill in the bubbles on your answer document, Be sure to use the correct place value.
Answers
Find the 3rd quartile of the date set:
72, 74, 76, 78, 82, 84, 87, 90, 91, 93, 99, 99, 100
Answer:
Answers
Answer:
101 102 108 156 1784 1267
The third quartile of the data set is 96.
Hope this helped! :)
The Jackson family went to soups and wiches and bought four sand which sand three bowls of soup for $27. The frank family went to soups and wiches and bought one bowl of soup and five sandwiches for $25.50. Let w represent the cost of the sandwich CNN es and a represent the cost of a bowl of soup. Identify which system of equations represents the situation.
Answers
Answer:
4w + 3c = $27
5w + c = $25.50
Step-by-step explanation:
Let us assume the w represent the cost of the sandwich
And, the c represent the cost of the bowl in a soup
Now the equations are
4w + 3c = $27
5w + c = $25.50
These two should be the equations that represent the situation
3. The sum of two numbers is 30 and their difference is 12. Find the two numbers.
Answers
Answer:
I don't know is it 12 and 16 I'm not sure
Answer:
The two numbers are 21 and 9
Step-by-step explanation:
Let the two numbers be a and b
The sum of these numbers is 30
a+b=30
The difference between these numbers is 12
a−b=12
―――――――――
I. You can solve this by logic.
If the two numbers were exactly equal, then they would both be 15.
15+15=30
But the difference would be 0, not 12
So if you lowered b by one point, and added that to a, then the two numbers would be 16 and 14, and the difference would be 2.
So you can see that for every point you subtract from b to add to a, you increase the distance between them by 2
So, by logic, you need to subtract 6 points from b and add them to a to create a difference of 12
(15+6) minus (15−6) gives a difference of 12
.m21.....−mm∩9 = 12
Answer:
The two numbers are 21 and 9
―――――――――
II. You can solve this by math
These are simultaneous equations, so you can solve them by math.
.a+b=30
.a−b=12
――――――
2a +0=42
.a =21 ← same answer
Plz Help me
3x + 5y = 13
2x + y = 4
Answers
Answer:
solve simultaneously
start by labeling them equation 1 and 2 then choose whether you want to make x or y the subject from knew of the equations
plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help find the value of x
Answers
Answer:
5x = 120, so
x = 24
Answer:
x = 24
Step-by-step explanation:
5x = 120
x = 24
[Please give me a brainliest]
Mar 01, 2:2
Nolan is going to invest $96,000 and leave it in an account for 6 years. Assuming the
interest is compounded monthly, what interest rate, to the nearest hundredth of a
percent, would be required in order for Nolan to end
up
with $142,000?
Answers
Answer:
put it this way 10% Is 9600 and 1% is 960
Step-by-step explanation:
so if it stacks monthly you can find your answer
also if you lookup compound interest calculator it will help you will future problems
Answer: its 6.54
Step-by-step explanation: its right on delta math
In the past year, Raina watched 6 movies that she thought were very good. She watched 15 movies over the whole year. Of the movies she watched, what percentage did she think were very good?
Answers
Answer:6/15 so 40%
Step-by-step explanation:
Rita works 1234 hours in her first week at a new job. She works 1514 hours in the second week. How many more hours does Rita work the second week?
Answers
Answer:
280
Step-by-step explanation:
1514-1234 = 280
I added a picture of the problem
Answers
Answer:
x≥88
88
88≤x≤100
Step-by-step explanation:
83x3=249
249-73-88=88
x≥88
88
88≤x≤100
Which equation Is false?
Answers
Answer: #3
Step-by-step explanation:
15/3+30/3= how I can solve it ?
Answers
30/3=10
5+10=15
Show work pls! :D
Given the following 30-60-90 triangle, find the value of x and y. Round to the nearest tenth.
Answers
is the product of 3/6×5/4 equal to the product of 3/4×5×6? explain how you know
Answers
Answer:
yes
Step-by-step explanation:
I think you mean
"Is the product of 3/6 × 5/4 equal to the product of 3/4 × 5/6?"
If we can turn 3/6 * 5/4 into 3/4 * 5/6 using only legal math steps, then the answer is yes.
3/6 * 5/4 =
Breakup each fraction into a product of fractions.
= 3/1 * 1/6 * 5/1 * 1/4
Use the associative and commutative properties of multiplication to change the order and grouping of the multiplication.
= (3/1 * 1/4) * (5/1 * 1/6)
Do each product in parentheses.
= 3/4 * 5/6
This shows that 3/6 * 5/4 = 3/4 * 5/6
Answer: yes
A graduate student is performing a study on a new antidepressant. The drug is supposed to reduce depression, but the graduate student realizes that it may do nothing or even increase depression, so she decides to formulate nondirectional hypotheses and conduct a two-tailed test. First, she uses mu_general population to denote the average score on the depression inventory for the population of all depressed people, and mu_antidepressant to denote the average score on the depression inventory for the population of depressed people who take the new antidepressant. She knows that the average score for all depressed people is mu_general population = 25, with a standard deviation of sigma = 6. The graduate student identifies the null and alternative hypotheses as: H_0: mu_antidepressant = mu_general population H_1: mu_antidepressant notequalto mu_general population The sample of 36 depressed people who tried out the new antidepressant scored an average of 23.3. Since the graduate student knows the standard deviation of the scores on the depression inventory for the population of people who are depressed, she intends to use a hypothesis test that uses the z-score of the sample mean as the test statistic (also known as the z test). First, she wants to make sure all the required assumptions are satisfied. Which of the following conditions is not a required assumption for the z test?
The scores on the depression inventory follow a normal distribution or the sample size is large (at least 30).
The standard deviation of the scores on the depression inventory is the same for those who take the antidepressant and those who don't.
Each observation is independent of every other observation.
The sample size must be very large.
Members of the sample are selected randomly.
Use the Distributions tool to find the critical region for alpha = .05. The critical z-scores (the values for z-scores that separate the tails from the main body of the distribution, forming the critical regions) are_______
Calculate the z statistic, and use the Distributions tool to evaluate the null hypothesis. The z statistic is______ The z statistic_______ lie in the critical region for a two-tailed hypothesis test. Therefore, the null hypothesis is______ .
Answers
Answer:
Step-by-step explanation:
From the given information:
The null and the alternative hypothesis is:
[tex]H_o: \mu_{antidepressant}= \mu_o[/tex]
[tex]H_1: \mu_{antidepressant}\ne \mu_o[/tex]
The population mean = 25
The sample mean = 23.3
sample size n = 36
standard deviation = 6
From the following conditions given; the condition that is not required is:
[tex]\text{The sample size must be very large}[/tex]
Since the sample size is 30, we do not need the condition and it's enough for the Z test provided that the population is not normally distributed. If the population is distributed normally, then any sample size is valid:
Then, the test statistics can be computed as follows:
[tex]Z = \dfrac{X - \mu}{\dfrac{\sigma}{\sqrt{n}} }[/tex]
[tex]Z = \dfrac{23.3 - 25}{\dfrac{6}{\sqrt{36}} }[/tex]
[tex]Z = \dfrac{23.3 - 25}{\dfrac{6}{6} }[/tex]
[tex]Z = -1.7[/tex]
At the level of significance 0.05
Since the test is two-tailed, the critical value [tex]Z_{\alpha/2} = Z_{0.025} = 1.96[/tex]
Provided that the Z value is not less than the critical value;
Then, we fail to reject the null hypothesis.
We conclude that there is no enough evidence that the drug reduces depression.
prove that:
[tex] |x \: y \: z \\ {x \: {y \\ {z \\ yz \: zx \: xy = (y - z) \: (z - x) \: (x - y) \: (xy + yz + zx)}^{2} }^{2} }^{2} | [/tex]
Answers
Answer:
???
Step-by-step explanation:
moris code?
Answer:
c, none of the above
Step-by-step explanation:
khan
Which image below shows the result of an image that has been rotated 180 by the origin O?
Answers
José is making frult-filled tart shells for a party. He has 80 raspberries and 48 blueberrles. The tarts will each
have the same number of berrles. Raspberrles and blueberrles will not be in the same tart If he puts the
greatest possible number of fruits in each tart, how many tarts can he make?
When the greatest possible number of berrles Is In each tart, there are
tarts In total.
Answers
Answer:8
Step-by-step explanation:the GCF for 80 and 48 is 16 so divide 80 by 16 and you will get 5 and 48 by 16 and you’ll get 3 and when you and 5 and 3 you’ll get 8 as your answer.
do kramagat dhanatmak purnanko ka yog 145 hai purnank gyat kijiye
Answers
Answer:
hssssskwkwkkkayak toa
ehekkekekekek
eemeeememe
Step-by-step explanation:eeekekekee dd ejndkekd3kd3kd3kd3kdb3
wkwdwugudhwkwkwkekekwkwka,akkKKkKSNBEVEVVRTTVKALALALAL
Answer:
72, 73
Step-by-step explanation:
माना दो क्रमागत धनात्मक पूर्णाक x और (x + 1) हैं |
इसलिए...
प्रश्नानुसार,
x + (x + 1) = 145
2x + 1 = 145
2x = 145 - 1
2x = 144
x = 144/2
x = 72
x + 1 = 72 + 1 = 73
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.
Answers
Answer:
Width 2in
height 3in
length 4in
Step-by-step explanation:
If he want the length to be four he has to take 2 sqares off at the end to be left with his height as 3 so vertical from top to bottom and width (the two sqaures at the end of the photo to the left) would be 2. :)
Width of box=2in
Height of box=3in
Length of box=6in
Volume=2(3)(6)=36in³Now
length of the box is 4in
Product of width and height=36/4=9in²
They must be of 3×3 in or 4.5×2 in
-5.2k+2.9 =-12k+30.1
Please show work !
Answers
answer: 3.8857
explanation:
Simplifying
-5k + 2.9 = -12k + 30.1
Reorder the terms:
2.9 + -5k = -12k + 30.1
Reorder the terms:
2.9 + -5k = 30.1 + -12k
Solving
2.9 + -5k = 30.1 + -12k
Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Add '12k' to each side of the equation.
2.9 + -5k + 12k = 30.1 + -12k + 12k
Combine like terms: -5k + 12k = 7k
2.9 + 7k = 30.1 + -12k + 12k
Combine like terms: -12k + 12k = 0
2.9 + 7k = 30.1 + 0
2.9 + 7k = 30.1
Add '-2.9' to each side of the equation.
2.9 + -2.9 + 7k = 30.1 + -2.9
Combine like terms: 2.9 + -2.9 = 0.0
0.0 + 7k = 30.1 + -2.9
7k = 30.1 + -2.9
Combine like terms: 30.1 + -2.9 = 27.2
7k = 27.2
Divide each side by '7'.
k = 3.885714286
Simplifying
k = 3.885714286
hope this helped;))))
Aquarium World
A package shipment company recorded the number of
packages received at each of two businesses,
Aquarium World and Rare Vinyl. The line plots show
the number of packages received at each business
every day over 2 weeks.
x x
X X X X X
X X X X X X X
5
10
15
What statements about the two plots' distributions are
true?
Rare Vinyl
Choose each correct answer.
The range of packages shipped to
Aquarium World is greater than the range in
packages shipped to Rare Vinyl.
The range of packages shipped to Rare
Vinyl is greater than the range of packages
shipped to Aquarium world.
Only the distribution of the data for
packages shipped to Aquarium World is
approximately symmetrical.
The distribution of the data for packages
shipped to both business is approximately
symmetrical.
Answers
Answer:
•the range of packages shipped to rare vinyl is greater than the range of packages shipped to aquarium world.•
•The distribution of the data for packages shipped to both business is approximately symmetrical.•
Step-by-step explanation:
I took the test
Graph the function
f(x)=3/4x+2
Answers
Answer:
i added the graph below :) hope this helps hun <3
Step-by-step explanation:
Cookies are sold singly or in packages of 8 or 24. With this packaging, how many ways can you buy 48 cookies?
Answers
Answer:
12
Step-by-step explanation:
this was right got the question wrong when I first did it
In "12 ways" you can 48 cookies. A complete solution is provided below.
According to the question,
Packages having,
= 8 or 24
Firstly we choose,
8 cookies packages 6 or,24 cookies packages 2 or,One 24 cookies packages remaining three 8 cookies packages.hence,
→ The total ways you can buy 48 cookies will be:
= [tex]6+2+1+3[/tex]
= [tex]12 \ ways[/tex]
Learn more:
https://brainly.com/question/3897030
The data set below shows the number of points scored by a basketball team for each of nine games. If the mean of the data is 83 and the standard deviation is 6.5, identify all the scores that are within one standard deviation of the mean. {71, 77, 79, 80, 83, 87, 88, 90, 92}
Answers
Answer:
The scores within one standard deviation of the mean are: 77, 79, 80, 83, 87, 88
Step-by-step explanation:
The mean of the data is 83 and the standard deviation is 6.5, find scores within 1 standard deviation of the mean:
Between
83 - 6.5 = 76.5
83 + 6.5 = 89.5
So:
The scores within one standard deviation of the mean are: 77, 79, 80, 83, 87, 88
-3 - 8 (-5x - 1) distributive property
Answers
Answer:
5 +40x
Step-by-step explanation:
Distributive property:a*(b +c) =(a*b) + (a*c)
-3 - 8( -5x - 1) = -3 + (-5x)*(-8) + (-1) * (-8)
= -3 + 40x + 8
= -3 + 8 + 40x {combine like terms}
= 5 + 40x
sam ran 63,756 feet in 70 minutes what is sams rate in miles per hour
Answers
Answer:
His rate would be 910.8 miles per hour
Step-by-step explanation:
This is division so divide 63756 by 70 and there’s your answer
Answer:
10.35 miles per hour
Step-by-step explanation:
63,756/5280 = 12.075 miles
12.075/70 = 0.1725 miles per minute
0.1725 x 60 = 10.35 miles per hour
hi can you please help me with my work
Answers
Answer:
The penicl is about 6.5 inches long.
Step-by-step explanation:
