Answer:
Division and multiplication are inverse operations. This means they "undo" each other. You can check your answer by multiplying the quotient by the divisor. You should get the dividend.
have a great day :)
Because multiplication is the converse of division,
If x/y=z then x=?x/y=z
x=yz
Division and multiplication are inverse operations. This means they "undo" each other. You can check your answer by multiplying the quotient by the divisor. You should get the dividend.
Just like addition is the converse of subtraction.
If x/y=z,
then x=yz.
If x divided by y is equal to z, then x equals y times z. These are the rules of arithmetic. If they weren't true the universe would fall apart! The rule can be used as a check that you have the right answer.
Therefore converse of division is the answer.
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The Stanford-Binet Intelligence Scale is an intelligence test, which, like many other IQ tests, is standardized in order to have a normal distribution with a mean of 100 and a standard deviation of 15 points.
As an early intervention effort, a school psychologist wants to estimate the average score on the Stanford-Binet Intelligence Scale for all students with a specific type of learning disorder using a simple random sample of 36 students with the disorder.
Determine the margin of error,
, of a 90% confidence interval for the mean IQ score of all students with the disorder. Assume that the standard deviation IQ score among the population of all students with the disorder is the same as the standard deviation of IQ score for the general population, =15
points.
Give your answer precise to at least two decimal places.
Answer:
4.11
Step-by-step explanation:
Margin of error equals critical value times standard error.
MoE = CV × SE
For 90% confidence and n > 30, the critical value is z = 1.645.
The standard error is SE = σ/√n = 15/√36 = 2.5.
Therefore, the margin of error is:
MoE = (1.645) (2.5)
MoE = 4.11
The margin of error of a 90% confidence interval for the mean IQ score of all students with the disorder is 4.1125 and this can be determined by using the formula of margin of error.
Given :
Standardized in order to have a normal distribution with a mean of 100 and a standard deviation of 15 points.A school psychologist wants to estimate the average score on the Stanford-Binet Intelligence Scale for all students with a specific type of learning disorder using a simple random sample of 36 students with the disorder.90% confidence interval.According to the given data, the confidence is 90% and n > 30, so the critical value is z = 1.645.
Now, to determine the standard error using the below formula:
[tex]\rm SE = \dfrac{\sigma}{\sqrt{n} }[/tex]
[tex]\rm SE = \dfrac{15}{\sqrt{36} }=\dfrac{15}{6}[/tex]
SE = 2.5
Now, the formula of margin of error is given by:
[tex]\rm MOE = z\times SE[/tex]
MOE = (1.645) [tex]\times[/tex] (2.5)
MOE = 4.1125
So, the margin of error is 4.1125.
For more information, refer to the link given below:
https://brainly.com/question/22771970
1) Two pieces of a pole arle cut into 5 inches each from an original pole that was 20 inches
long. What is the length of the remaining part of the 20 inch pole?
HELP Please
Answer:
it is 10 because 5x2= 10and20-10=10
2 divided by 4/5 whats the answer to this problem anyone?
Answer: 2.5
Step-by-step explanation:
Answer:
2 1/2
Step-by-step explanation:
Do keep change flip. Make 2 an improper fraction by making it 2/1. Change the division symbol to a multiplication symbol. Flip 4/5 to 5/4. The equation you should have is 2/1x5/4. 2x5=10 1x4=4. the fraction you should have is 10/4. 10 divided by 4 =2.5. the fraction you should have now is 2 2/4. Simplify 2 2/4 to 2 1/2.
Mark walked 12 1/2 miles in 5 hours. How many miles did Mark walk in 1 hour?
the answe is it is 2.5 or 2 1/2 as he said but in conclusion answe 2 1/2 or 2 and 1 half
Distance can be defined as how far a person or an object can go or cover.
The number of miles Mark walked in 1 hour is [tex]2\frac{1}{2}[/tex] miles
From the question,
In 5 hours, Mark walked a distance of 12 1/2 miles.
Hence,
5 hours = [tex]12\frac{1}{2}[/tex] miles
1 hour = ?
Cross Multiply
1 hour x [tex]12\frac{1}{2}[/tex] miles / 5 hours
= [tex]2\frac{1}{2}[/tex] miles
The number of miles Mark walked in 1 hour is [tex]2\frac{1}{2}[/tex] miles
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2x+--- - 3x + 2y = -2 You could produce a pair of like terms with opposite coefficients by multiplying the first equation by what number? D2 3 O O16
Answer:6
Step-by-step explanation:
Answer:
1. 6
2. Add
3. (-2,-4)
Step-by-step explanation:
Edge2020
Math question Pls help Im dumb
Answer:
I think it's J
Step-by-step explanation:
Because the ratio is 5:3:2
There are 150 raisins
And since 2 is one less than 3 my estimate would be subtracting 50 from 150 making there be 100 chocolate chips. Then if the unit is 50, 50 x 5 ( 5 in the ratio) would be 250.
I hope this helps, have a good day.
2% of what number is 5?
A. 0.1
B. 1
C. 250
Answer:
a
Step-by-step explanation:
5(.02)
Evan bought 5 pounds of bananas for $10. How much did he pay per pound?
1.why.do.we.need.election
Solve.
-3.5 x 0.2=
1. -7.0
2. -0.7
3. 0.7
4. -3.3
first pirson to type 1 i will see if i can give brainlist but idk how bot i will try
Answer:
1
Step-by-step explanation:
you asked to type 1
Alicia has had 16 hints 46 at-bats in her softball games. How many consecutive hits does she need to raise
her batting average to 0.400
Answer:
Step-by-step explanation:
She has to raise 289 bats more
Your parents love coffee . They purchased a bag of coffee online for 10.99. Since they purchased it online . They received 18% off . What was the sale price
what is the answer to this question?
Answer:
1st box
3rd box
5th Box
Step-by-step explanation:
For the first equation, you have to move the decimal place 11 places to the right.
For the second equation, you have to move the decimal 13 places to the right.
-tell me if I'm wrong
Will mark brainliest
Answer: The third option
y = -6 + 2√6 ÷ 5 and y = -6 - 2√6 ÷ 5
Plz mark brainliest:)
6. Solve X^2 - 3x - 10=0 by factoring,
F-5, -2)
G(-2,5)
H{-2,-5)
J{5,-2)
x₁ = 5
x₂ = - 2
Step-by-step explanation:Hi there !
x² - 3x - 10 = 0
x² + 2x - 5x - 10 = 0
x(x + 2) - 5(x + 2) = 0
(x - 5)(x + 2) = 0
x - 5 = 0 => x₁ = 5
x + 2 = 0 => x₂ = - 2
Good luck !
What is the slope of a line passing through the points (2, 5) and (0, −4)?
Abagail bought 5 cartons of apple juice at lunch. Each carton held 300 milliliters of juice. How many milliliters of apple juice did she buy in all?
Answer:
1500ml
Step-by-step explanation:
300 x 5 = 1,500ml
Please mark me brainliest! Hope this helps!
God bless :)
Kenya used a debit card to buy a pair of jeans. Which statement is true about her method of payment? Kenya used money directly from her bank account to buy the jeans. Kenya borrowed the money to buy the jeans. Kenya did not have enough money in her bank account to buy the jeans. Kenya will pay for the jeans over time.
Answer:
I suppose its " Kenya used money directly from her bank account to buy the jeans" because there are not any like supportive explanation for the others.
Step-by-step explanation:
Answer:
^^^Agreed^^^
Step-by-step explanation:
They're just simply correct, They helped me so let them help you!
Correct Choice is "A"
Go ahead and mark the other person Brainliest, they were the first correct answer! :)
Have a good day!
help me pleeeaaasssee
Answer:
[tex]a=2\frac{A}{P}[/tex]
Step-by-step explanation:
[tex]A=\frac{1}{2} ap[/tex]
because you want a, divide both sides by p
[tex]\frac{A}{p} =\frac{1}{2} a[/tex]
then, because the reciprocal of 1/2 is 2, multiply both sides by 2
[tex]a=2\frac{A}{P}[/tex]
If two angles are complementary, then they are equal to eachother.
Is this true, sometimes true, or false?
Answer: Sometimes true
Step-by-step explanation: Complementary angles are when two angles add up to 90 degrees. This will be true if the angles are both 45 and 45, however, some can be different like 50 and 40.
Answer:
Sometimes true if both angles are 45 degrees
Step-by-step explanation:
identify the coefficients 7p - 3r + 6 - 5s
Answer:
7, -3, and -5 are coefficients.
Step-by-step explanation:
Answer:
The leading coefficient is 7
C - x = r - d , for x
Answer:
x = C+d-r
Step-by-step explanation:
C - x = r - d
-x = r - d - C
x = -(r - d - C)
x = -r+d+C
x = C+d-r
help quick!! please i have 10 minutes!!
Sorry it's been longer than 10 min I hope this is accurate.
a laptop computer is purchased at $1,100 after each year the resale value decreases by 30% what will the resale value be after 3 years
Answer:770
Step-by-step explanation:30% of 1100 is 330 330-1100=770
Evaluate the expression for a = 4, b = 5, and c = −4. 17 − 7(a − b)2 =
17 -7 ( 4 - 5 ) square = 17 -7 ( 1) = 17 - 7 ×1 = 17 -7 = 10 is the answer.
Help! Whoever answers correctly and is first to answer I will make brainly! In dire need of help!
Answer:
B
Step-by-step explanation:
Isoceles triangle
Answer:
B. 65 degrees
Mason prepared 12 kilograms of dough after working 3 hours. How many hours did Mason
work if he prepared 20 kilograms of dough? Solve using unit rates.
Chan receives a bonus from his job. He pays 30% taxes, pays 30% charity and 25% debt. Has $600 remaining from his bonus. What was the total amount of chains bonus?
Answer:
b = $4000
Step-by-step explanation:
Let b represent the bonus amount.
Then the bonus, b, less the three deductions, is represented by
b - 0.30b - 0.30b - 025b, and this comes to $600. Find the value of b.
b - 0.85b = $600, or
0.15b = $600
Then b = $4000
Solve for X
2x + 4 = 10
Answer:
x = 3
Step-by-step explanation:
2x+4 = 10
2x = 6
x = 3