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Related Questions
Suppose you have 20 coins that total $4.00. Some coins are nickels and some are quarters. Which of the following pairs of equations would you use to find out how many of each coin you have?
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Answer:
The answer is below,
Step-by-step explanation:
n+q=205n+25q=400
I hope this helps! :)
what is the range of f (x)=3 ^ x?
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Answer:
it is 0 so that is x
Step-by-step explanation:
24 is what percent of 12?
need help? anyone know this?
Answers
Answer:
200
Step-by-step explanation:
These points are linear. Find the Slope.
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Answer:
the slope is 1
Step-by-step explanation:
if your x goes up by one as your y goes up by one, the slope will always be one.
Explanation:
m = (y1 - y)/(x1 - x)
Where:
m is the slope
y1 = -3, y = -2
x1 = -3, y = -2
=> m = (-3 -(-2))/(-3 -(-2))
=> m = (-3 + 2)/(-3 + 2)
=> m = -1/-1 = 1
Therefore the slope is 1
Please Help: Adelle solved the equation 4x/7-6= -20 as shown. Fill in the correct justification for each step. Will Mark Brainliest. Only answer if you are extremely 100%. Have to pass math. No Plagiarism Please.
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Answer:
Kindly check explanation
Step-by-step explanation:
Given the equation :
4x / 7 - 6 = - 20
4x / 7 = - 20 + 6 (move - 6 to the right hand side, the - sign attached to 6 changes to positive)
4x / 7 = - 14 ( - 20 + 6 = - 14)
4x = - 98 ( multiply both sides by 7 in other to isolate 4x)
x = - 24.5 (Divide both sides by 4, in other to isolate x and obtain it's value).
Is this a function?
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Answer:
yes
Step-by-step explanation:
i need help with 4th grade math please.thank you so much.
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Answer:
1. 42 Legs altogether
2. 7 Cats
3. There is many answers, one of them is their could be 15 people, their is many possible outcomes and that is one of them. :)
Step-by-step explanation:
Hope this helped!!
Answer:
1. 42 legs
2. 7 cats
Step-by-step explanation:
1. 3 x 8 = 24
2 x 4 = 8
5 x 2 = 10
add those and you get 42.
2.
28
4
PLZ HELP ASAP WILL GIVE BRAINLIEST
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Which graph is the most appropriate to describe the height of a candle burning at a constant rate?
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Answer:
A
explanation:
When something has a constant rate of change, one quantity changes in relation to the other by a constant factor. One concrete example of this is the relation of distance rate and time
Answer:
c is the correct answer i think not sure
Sam is 27 years old. His age is 6 years greater than 3 time's brandon's age. Which methond can be used to determine Brandon's age?
I NEED HELP
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Answer:
Brandon is 7 years old. You just substitute. It's an age word problem.
Step-by-step explanation: Substitute it. 7 times 3 (times Brandon's age) is 21 then add the 6 (years greater).
Answer:
Brandon is 7 years old. You just substitute. It's an age word problem.
Step-by-step explanation: Substitute it. 7 times 3 (times Brandon's age) is 21 then add the 6 (years greater).
Step-by-step explanation:
Bo big cookies for two hours and 30 minutes he finished baking at 8:30 PM when did bo start baking
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Answer:
6:00 pm
Step-by-step explanation:
Simplify (6x−3)−(9x+2)
15x−5
15x−1
−3x−1
−3x − 5
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Answer:
- 3x - 5
Step-by-step explanation:
(6x-1) -9x-2
=-3x-5
can someone please answer as soon as possible
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Answer:
A) {-1,2,8}
Step-by-step explanation:
fill in all domain values in f(x) and you get:
f(-1) = -1
f(0) = 2
f(2) = 8
The set of results is the range.
what is 5 divided by 5
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Answer:
1
Step-by-step explanation:
You have 5 jelly beans and 4 imaginary friends
You have to split the jellybeans between yourself and your pretend friends.
Each of you gets 1 jellybean
(Except you get all the jellybeans because your friends don't exist)
Hope this helps :)
Select the correct answer.
Which graph represents this equation?
y- 4=-3(x+5)
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Step-by-step explanation:
The given expression is :
y- 4=-3(x+5)
⇒ y-4 = -3x-15
⇒y+3x = -15 + 4
⇒ y+3x= -11
We need to draw the graph for this equation. The attached figure shows the graph for this equation.
Dan was at the beach for five days and found 28 seashells. He plans to give all of his seashells equally to his four friends. How many seashells will each friend get?
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The mean running time of a certain variety of nickel-cadmium rechargeable flashlight battery is known to be normally distributed with a mean of 8.5. A change in production method for this battery has been proposed, and a simple random sample of 64 batteries produced by the new method has mean running time of 8.72 hours. Assume the population is normally distributed with a standard deviation of 0.55 hour as known and remains unchanged, test a claim that the new production method improving the battery mean running time using 0.05 significance level.
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Answer:
answer is a
Step-by-step explanation:
Need help on this one please and thank you
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Answer:
64x64x64=262,144
Step-by-step explanation: mark as brainest plsssssssssssssss
The data set shows the numbers of flowers that students on a field trip correctly identified. What is the mode of the data set? 0 7 3 9 5 0 10 5 8 6
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Answer:
The mode is the value that appears most frequently in a data set
Step-by-step explanation:
so it will be 0 and 5
Answer:
0 and 5
explanation:
fully explain:
x(x+2)+1(x+2)
How does it become:
(x+1)(x+2)
????
Help! brainliest for best :)
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➨ Let (x+2) = a ➩ [tex]xa+1a[/tex]
Then we factor a-term out of the expression ➩ Common Factor ➩ [tex]a(x+1)[/tex]
Then convert from a back to x+2
Thus, our answer would be ➩ [tex](x+2)(x+1)[/tex]
n old building has been demolished, and there are tons of debris to haul away. Each pickup load can hold a ton of debris. As many full loads as possible are hauled away. How much of a full pickup load is in the last load of debris?
Pick an answer!
1/6
8/27
2/3
7/9
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Answer:
The question is incomplete...
Step-by-step explanation:
Nolan is a songwriter who collects royalties on his songs whenever they are played in
a commercial or a movie. Nolan will earn $50 every time one of his songs is played in
a commercial and he will earn $100 every time one of his songs is played in a movie.
How much would Nolan earn if his songs were played in 10 commercials and 5
movies? How much would Nolan earn if his songs were played in x commercials and
y movies?
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Answer:
500$+500$=1000$
Step-by-step explanation:
for songs=50×10=500$
for movie=5×100=500$
total=500$+500$=1000$
50x+100y
hope it helps:)
what is 67 sec and 76 minuts equal to
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Answer:
1 hour and 17 minutes and 7 sec
Step-by-step explanation:
.
Water freezes at 32° Fahrenheit, which is 0° Celsius. Water boils at 212 Fahrenheit, which is 100 Celsius. Which temperature would be the best estimate for water at room temperature in Celsius
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Answer:
20
Step-by-step explanation:
I don't really know how to explain this beyond either memorizing this or remembering that Fahrenheit is around 70 degrees and estimating it.
Using partial quotients, which would be the best choice for the first number to subtract in the division problem 858 +26?
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Answer:
780
Step-by-step explanation:
We want to use partial quotients in the division problem 858 ÷ 26.
In partial quotients method, what we do is to repeatedly subtract from the dividend easy multiples of the divisor.
In this case, the dividend is 858 and the divisor is 26.
Thus, the first easy multiple of the divisor we can use will be 30 because 30 × 26 = 780 yields the closest value to 858.
Therefore, the best choice for first number to subtract is 780
Answer: 780
Step-by-step explanation:
The best choice for the division problem will be 780.
Can somebody help me pls
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the answer can vary between x=−1 or x=2 or x=−3 or x=3
explanation:
x4−x3−11x2+9x+18=0
Step 1: Factor left side of equation.
(x+1)(x−2)(x+3)(x−3)=0
Step 2: Set factors equal to 0.
x+1=0 or x−2=0 or x+3=0 or x−3=0
x=−1 or x=2 or x=−3 or x=3
The heights of dogs, in inches, in a city are normally distributed with a population standard deviation of 7 inches and an unknown population mean. If a random sample of 20 dogs is taken and results in a sample mean of 21 inches, find a 95% confidence interval for the population mean. z0.10z0.10 z0.05z0.05 z0.025z0.025 z0.01z0.01 z0.005z0.005 1.282 1.645 1.960 2.326 2.576 You may use a calculator or the common z values above. Round the final answer to two decimal places.
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Answer:
The 95% confidence interval is [tex] 17.932 < \mu < 20 + 22.068[/tex]
Step-by-step explanation:
From the question we are told that
The population standard deviation is [tex]\sigma =7 \ inches[/tex]
The sample size is n = 20
The sample mean is [tex]\= x = 20[/tex]
From the question we are told the confidence level is 95% , hence the level of significance is
[tex]\alpha = (100 - 95 ) \%[/tex]
=> [tex]\alpha = 0.05[/tex]
Generally from the normal distribution table the critical value of [tex]\frac{\alpha }{2}[/tex] is
[tex]Z_{\frac{\alpha }{2} } = 1.96[/tex]
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }[/tex]
=> [tex]E = 1.96 * \frac{7 }{\sqrt{20} }[/tex]
=> [tex]E = 2.068[/tex]
Generally 95% confidence interval is mathematically represented as
[tex]\= x -E < \mu < \=x +E[/tex]
=> [tex] 20 - 2.068 < \mu < 20 + 2.068[/tex]
=> [tex] 17.932 < \mu < 20 + 22.068[/tex]
Drag the missing word into place
My parents put
panels on our roof to harvest the
sun's energy
solar
geothermal
chemical
Answers
Answer:
Solar
Step-by-step explanation:
It would be Solar because the energy from the sun is called solar energy. Also, solar panels pick up the sun's energy, and harvests it.
In 1992, Jason bought a gallon of gas for $1.15. Yesterday, he bought a gallon of gas for $2.12. What is the percentage increase of the price of a gallon of gas from 1992 to yesterday? If necessary, round to the nearest tenth of a percent.
A.
84.3%
B.
45.8%
C.
54.2%
D.
15.7%
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The graph of a logarithmic function is shown below...
On a coordinate plane, a curve starts at y = negative 2 in quadrant 4 and curves up into quadrant 1 and approaches y = 2.
What is the domain of the function?
A. x 0
C. x < 1
D. all real numbers
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Answer:
ITS B GOOD SIR!! I JUST FINISHED THE TEST
Step-by-step explanation:
huhjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
The domain of the function is [tex]x\geq 0[/tex]
To understand more, check below explanation.
Domain of function:The input values for which any function is defined, that input values aree known as the domain of function.
For any graph of a function, the x- axis values are the domain of the function.
From the given graph it is observed that, the input values for the function is [tex]x\geq 0[/tex].
Hence, the domain of the function is [tex]x\geq 0[/tex].
Learn more about the domain and range of the function here:
https://brainly.com/question/26098895