Answer: 30 seconds
Step-by-step explanation:
From the question, we are informed that one string flashes every 10 seconds while the other one string flashes every 15 seconds.
The number of minutes that it'll take before they both flash again at the same time will be gotten by calculating the LCM of 10 and 15. This will be:
10 = 10, 20, 30, 40, 50 ...
15 = 15, 30, 45, 60, 75 ....
We can see that the lowest common multiple of 10 and 15 is 30. Therefore, the answer is 30.
They'll both flash again at same time in 30 seconds.
SAVE ME PLS
The ratio of teachers to students in a particular school is 1 to 11. The ratio of female students to the total number of students is 4 to 9. If there are 396 female students, then how many teachers are there?
Answer:
81
Step-by-step explanation:
Set up a proportion to find how many total students there are [notice how females are on top and totals are on the bottom of the ratios]
[tex]\frac{4}{9}[/tex] = [tex]\frac{396}{x}[/tex] so cross multiply 4x = 396(9) so x = 891, if there are a total of 891 students and you need 1 teacher per 11 students then take 891/11 so you need 81 teachers.
You could set up another proportion 1/11 = x/891
If there are 396 female students, there are 81 teachers.
How to obtain real measurements from the ratio of two measurements?Suppose the real measurements were "a" and "b"
Then their ratio will be formed as
[tex]\dfrac{a}{b} = \dfrac{p \times x}{q \times x} = \dfrac{p}{q}[/tex]
where is a common factor (not 1)
This shows that to get the real measurements from the given ratio, we need to assume to have some factor possibly cancelled from both the numerator and the denominator.
Thus, a = px, b = qx
First, Set up a proportion to find how many total students there are
[notice how females are on top and totals are on the bottom of the ratios]
So, 4/9 = 396 / x
then, cross multiply
4x = 396(9)
so x = 891,
if there are a total of 891 students and we need 1 teacher per 11 students then take 891/11.
Thus, you need 81 teachers.
Also, we could set up another proportion 1/11 = x/891
Hence, If there are 396 female students, there are 81 teachers.
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How do you write 60% as a decimal?
Please answer 6! Thank you!
Answer:
∠J= 22°
JL=19.0137
KL=7.99
Step-by-step explanation:
The step-by-step is attached as a picture. Hope it helps! Feel free to message me if you have any questions in reference to this math problem.
The answer to the problem you sent me in the comments is attached to here too.
T-T help me I can't think
Answer:
81 square inches
Step-by-step explanation:
area of a square= s^2
Can someone please help me with this?
Answer:
true 8 is the common
please follow me so I will follow you
Answer:
False
Step-by-step explanation:
Premise: 8n-1 = 2n+8
6n-1 = 8
6n = 9
n = 1.5 Since n must be an integer, this is an extraneous solution. The premise is false.
m + 5q; where m=1, and q = 5 I
Answer:
26
Step-by-step explanation:
m + 5q | Given
1 + 5(5) | Substitute the values
1 + 25 | Distribute (5(5) is the same as writing 5 × 5
26
The solution of m + 5q is 26, where m = 1, and q = 5.
What is expression?Expressions is the defined as mathematical statements that have a minimum of two terms containing variables or numbers.
What are Arithmetic operations?Arithmetic operations can also be specified by the subtract, divide, and multiply built-in functions.
The operator that perform arithmetic operation are called arithmetic operators .
Operators which let do basic mathematical calculation
+ Addition operation : Adds values on either side of the operator.
For example 4 + 2 = 6
- Subtraction operation : Subtracts right hand operand from left hand operand.
for example 4 -2 = 2
* Multiplication operation : Multiplies values on either side of the operator
For example 4*2 = 8
/ Division operation : Divides left hand operand by right hand operand
For example 4/2 = 2
Given expression as :
⇒ m + 5q
where m = 1, and q = 5
Substitute the values of m = 1, and q = 5 in the expression and apply the arithmetic operations
⇒ 1 + 5(5)
⇒ 1 + 25
⇒ 26
Hence, the solution of m + 5q is 26, where m = 1, and q = 5.
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Work out the surface area of this cylinder radius 2cm and height 4cm pls help
Step-by-step explanation:
surface area of cylinder is
2×pi×r (h+r)
2×22/7×2 (4+2)
88/7 (4+2)
75.4 cm square
PLZZZZ HELLLLPPPPP IF U DO U ARE MY HEROOOOO FR
Answer: The second one
Step-by-step explanation:
Answer:
second one
Step-by-step explanation:
Convert 0.2194 to a fraction.
Give your answer in its simplest form.
4x - 10 = 22
two step equations(integers)
the answer is x=8
I hope this helped
A line passes through the points (-6, 4) and (-2, 2). Which is the equation of the line?
O y=-3x+1
O y=zx+7
y=-2x - 8
y = 2x + 16
Answer:
y = 2x + 16
Step-by-step explanation:
sec 5A = cosec 7A, prove that A = 7.5°
Answer:
see explanation
Step-by-step explanation:
Using the cofunction identity
sec(90 - x)° = cscx° , then
7A = 90 - 5A ( add 5A to both sides )
12A = 90° ( divide both sides by 12 )
A = 7.5°
tan(A+B)=tanA+tanB/1—tanAtanB
The question is not correct.
5/7 ............. 15/21
NONE OF THESE
EQUAL
GREATER THAN
LESS THAN
Answer: EQUAL
Step-by-step explanation:
Just as you can do the same thing to both sides of an equation, you can do the same thing to both sides of a fraction. 15 = 5*3 and 21 = 7*3. Thus, 5/7=15/21
Hope it helps <3 :)
Mr. Hernandez dilates the triangle shown below by a scale factor of 2 with the origin
Answer:
Only student 2
Step-by-step explanation:
What expression is equivalent to ⅗?
Answer:
6/10
Step-by-step explanation:
Answer:
3/5 = 0.6 = 6/10 = 9/15 = 12/20 = 18/30 = 21/35 = ...
Step-by-step explanation:
Multiply the numerator and denominator by the same number:
3/5 = 6/10 = 9/15 = 12/20 = 18/30 = 21/35 = ...
Also, you can divide 3 by 5 to get 0.6
Each month Marla pays a $30 cell phone bill from her bank account. At the
end of one year, what is the change in the amount of money in Marla's account
because of her cell phone bill? Write a multiplication equation to represent the
problem. Explain what the product represents.
Answer:
-$360.00 change
Step-by-step explanation:
Now there is either some information missing, like her starting total in the bank; or they want you to explain the net change. But the way the question is worded it is stating she is paying $30 over 12 months. This means she has paid $360.00 in that 12 months aka 1 year. Her bank account should have had a balance. So you could technically say B for balance. B-30*12. To get your answer. Although there are many ways to write an equation expression of this question. If you know the starting balance then it's better. But you could assume her starting balance was $0. Which would be 0-30M*12 where M could represent monthly. And the same answer would occur of 360. Is there more information?
30*12= X (x equals the total paid)
X-30*12 (if x is her balance before paying any money)
Triangular prism please help
Answer:
C
Step-by-step explanation:
PLEASE HELP ME FOR THIS I NEED IT QUICK!!
The price of 6 packets of tea is same as the price of 4 packets of coffee. How many packets of tea are required to exchange 20 packets of coffee?
Answer:
The answer is 30
Step-by-step explanation:
Suppose the price per pack of tea is x and the price of coffee per pack is y
Then
[tex]6x = 4y \\ when \: 20y = 5 \times 4y = 5 \times 6x \\ = 30x[/tex]
We need 30 teabags to exchange for 20 coffee bags
CAN someone help me this is due in like a few mintuirs
A circle has an area of 64 pi . What is the exact circumference of the circle? Show your work.
Answer:
C≈28.36Circle
Solve for circumference
C≈28.36
A Area
64
Using the formulas
A=πr^2
C=2πr
Solving forC
C=2√πA=2·√π·64≈28.35926
Step-by-step explanation:
Hope it is helpful.....
A grocery store sells a bag of 7 oranges for $4.48. If Khloe spent $6.40 on oranges, how many did she buy?
She need to buy 10 oranges of $6.40.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit.
We are given that grocery store sells a bag of 7 oranges for $4.48. If Khloe spent $6.40 on oranges, then
We have to do as $4.48 divide by 7
4.48 / 7 = $0.46
Therefore, Each orange costs $0.64
For 10 oranges;
$0.46 x 10 = $6.40
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• Which expression has a term with a coefficient of 6?
бу
4p +6
62
20
The expression that has a term with a coefficient of 6 is бу.
Option A is the correct answer.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
The term "coefficient" refers to the numerical factor that is multiplied by a variable or variables in a term.
Out of the given expressions, only one has a term with a coefficient of 6, which is:
6y
Thus,
The expression that has a term with a coefficient of 6 is бу.
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What is 20.30 - 19.70 and what are the solving steps?
Answer
0.6
Step-by-step explanation:
here is the working out! Can i get brainliest
Answer:
Look at the image!!
Step-by-step explanation:
Hope this helps!!
Sorry for the bad righting XD
If you want to learn more search Mathisfun.com!!
m,n how much is it in math
Answer:
you can't really determine how much letters equal if there is not an equation but it represents variables that stand for integers
Step-by-step explanation:
hope this helps have a good rest of your night :) ❤
Pleaseeee answer correctly !!!!!!!!!!!! Will Mark Brianliest !!!!!!!!!!!!!!!!!!
Answer:
NI and HN
Step-by-step explanation:
They are marked congruent by the small lines in the middle of each segment, indicating marks for congruency.
The LCD PLEASEEEE
EEEEE
Answer:
-2
Step-by-step explanation:
(x + 2) ÷ 2 + (x + 4) ÷ 4 = 4
lcm is 6
(x + 2) ÷ 2 × 6 + (x + 4) ÷ 3 × 6 = 4
(x + 2) × 3 + ( x + 4) × 2 = 4
3x + 6 + 2x + 8 = 4
correct like terms
3x + 2x + 6 + 8 = 4
5x + 14 = 4
5x + 14 - 14 = 4 - 14
5x = - 10
5x ÷ 5 = -10 ÷ 5
x = -2
Evaluate 4 + s × 12, where s= 1/2
(A) 6
(B) 10
(C) 24
(D) 54
Answer:
(B) 10
Step-by-step explanation:
f(s) = 4 + s × 12
f(1/2) = 4 + (1/2) × 12
= 4 + 6
= 10
Answer:
10
Step-by-step explanation:
4 + s x 12
4 + (s x 12)
s = 1/2
substitute for s
4 + (1/2 x 12)
4 + 6 = 10
PLEASE HELP WILL GIVE BRAINLIST!!!
Answer:
B
Step-by-step explanation:
Answer:
The answer is B. Most of signers had some familiarity with law.
Step-by-step explanation:
Given that a = 15 cm and b = 8 cm, work out x
Answer:
the value of x is 17 cm
Step-by-step explanation:
The computation of x is shown below:
Here we applied the pythagoreans theorem
x^2 = a^2 + b^2
x^2 = 15^2 + 8^2
X^2 = 225 + 64
x^2 = 289
x = sqrt(289)
= 17
Hence, the value of x is 17 cm