Answer:
So 2:14 and 3:21 are two ratios that are equal to 1:7. Students are also asked to determine whether two given ratios are equal, by first writing each ratio as a fraction, then writing each fraction in lowest terms. If the two fractions are the same when written in lowest terms, then the ratios are equal.
Step-by-step explanation:
Above
Please Mark brainliest if this helped i need 3 more!
Answer:
2:14 or 3:21
Step-by-step explanation:
because u multiply
15. Your research problem should have a positive impact on the field.
a. Timely c. Novel
b. Significant d. Supported by Literature
16. It is the question that a researcher wants to answer or a problem that wants to be
solved.
a. Researchable c. Novel
b. Timely d. Research Problem
pls help
Answer:
15: significant 16: research problem
If the ratio of homes without children to homes with children is about 8:7 if there is 4125 homes how many are without children
Answer:
2200
Step-by-step explanation:
8+7=15 4125/15=275 275x8=2200
candy had some money. she bought a drink for £1.45 and a piece of cake for £1.20 she now has two thirds of her money left. how much money did candy to start with? i suck at fraction
The amount of money Candy started with after spending on drinks and cakes is £7.95
How to find the amount of money she started with?She bought a drink for £1.45 and a piece of cake for £1.20.
She has two thirds of here money left.
Let the money she has initially = x
Therefore,
2 / 3 x = x - 1.45 - 1.20
2 / 3 x = x - 2.65
subtract x from both sides
2 / 3 x - x = - 2.65
2x - 3x / 3 = - 2.65
- x / 3 = - 2.65
cross multiply
-x = - 2.65 × 3
- x = -7.95
x = £ 7.95
Therefore, Candy started with £7.95
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The data set shows the number of people who attended a concert over a period of 10 days.
12, 35, 27, 55, 22, 23, 60, 49, 15, 66
What is the mean of this data set?
Round the answer to the nearest tenth.
29.8
35.2
36.4
40.4
Answer:
40.4
Step-by-step explanation:
I took the test
Given Data set of people who attend the concert has a mean of 36.4.
What is the mean?the sum of the values by adding them all up. Divide the sum by the number of values in the data set is known as the mean.
Given The data set shows the number of people who attended a concert over a period of 10 days.
12, 35, 27, 55, 22, 23, 60, 49, 15, 66
the Sum of the given data set = 364
from the general formula of the mean
mean = (sum of data)/ number of data
Given the number of data = 10
Thus
Mean = 364 / 10
Mean = 36.4
therefore, the Mean of the given Data set is 36.4.
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Rob buys a rocking chair priced at 27$. if the sales tax is 10%, what will be the total cost including tax?
Answer:
$29.7
Step-by-step explanation:
10 percent of 27 is 2.7 then you add 27 and 2.7 and you get 29.7
pls help
Match the following items by evaluating the expression for x = -2.
x ^-2
x ^-1
x ^0
x ^1
x ^2
50 points!
Answer:
Exponent rules used:
[tex]a^{-b}=\dfrac{1}{a^b}[/tex][tex](-a)^b=a^b \ \ \ \textsf{if b is even}[/tex][tex]a^0=1, \ a\neq 0[/tex][tex]x^{-2}=\dfrac{1}{x^2}= \dfrac{1}{(-2)^2}=\dfrac{1}{2^2}=\dfrac14[/tex]
[tex]x^{-1} = \dfrac{1}{x}= \dfrac{1}{-2}=-\dfrac12[/tex]
[tex]x^0=1\implies (-2)^0=1[/tex]
[tex]x^1=x =-2[/tex]
[tex]x^2=(-2)^2=2^2=4[/tex]
Please give me right answer fast need it by tonight
Sophia has 7m of ribbon to help decorate a room. She will cut pieces of a ribbon that are each r inches long. (1in = 2.54cm)
Which expression can help find the number of pieces of ribbon that she will have?
Mr. McKinney is planning to purchase new carpet for his large family room. The dimensions of the room are shown in the diagram. How much carpet will he need?
Answer:
204 ft²
Step-by-step explanation:
Let's split the room to make it look like there are two squares.
We can make it to where one square is 14 ft long and 10 ft wide.
The other square can be 16 ft long and 4 ft wide
Find the areas of those two squares by multiplying width and length
14 x 10 = 140
16 x 4 = 64
Add those two together
140 + 64 = 204
Answer:
a
Step-by-step explanation:
How do I answer this?
Answer:
2k³ is the GCF.
Step-by-step explanation:
GCF of [tex]10k^{3} ,6k^{3}[/tex]
Finding the factors:
=10k³[Factoring 10k³]
=2×5×k×k×k
=6k³[Factoring 6k³]
=2×3×k×k×k
Common factors in 10k³ and 6k³.
=2×k³
=2k³
GcF
[tex]\\ \tt\hookrightarrow 2(k)(k)(k)[/tex]
[tex]\\ \tt\hookrightarrow 2k^3[/tex]
Can someone please help me? :(
-3/5x-7/10x+1/2x = -56
Answer:
x=70
Step-by-step explanation:
Stanley has $18 to spend on packs of trading cards that cost $1.50 each. The inequality 18≥1.5p represents the number of packs p he can buy. What is the greatest number of whole packs Stanley can buy?
Answer:
Numbers of packs p is 12
Step-by-step explanation:
Data :
Money = $18
Price of a card = $1.5
Equation : 18 ≥ 1.5p
Solve the equation for p
18/1.5 ≥ p
12 ≥ p
7. Arrival of the Normandy Train
Claude is waiting to meet the train from Normandy at Gare Saint-Lazare in Paris. He
tells Marie the hour of the train's arrival and he tells Jean at which minute it arrives. He
also tells them both that the train arrives between 0600 and 1000.
They consult the timetable and find the following services between those times:
0620, 0639, 0650; 0717, 0746; 0825, 0839; 0917, 0925, 0950.
Marie then says, “I don't know when Claude's train arrives, but I'm sure that neither does
Jean."
Jean replies, “I didn't know his train, but now I do."
Marie responds, “Now I do as well!"
When is Claude's train and how do you know?
Answer:
0839
Step-by-step explanation:
First of all, let's cancel 0620 and 0746, because they dont have any other number that has the same last 2 digits as them. Jean would've immediately known the train number if it was one of these two.
Now, when Marie says "I'm sure that neither does Jean", it means she is guaranteed Jean doesn't know the train number. It mean she couldnt've gotten 06 or 07, as 0620 and 0746 have it.
We're left with 0825,0839,0917,0925 and 0950
When Jean replies he knows the train number, it means he couldnt've gotten 25, as it's repeated.
And when Marie responds she knows as well, she couldnt've gotten 09, as it's also repeated.
We can cancel 0825,0917,0925 and 0950
So, the train number is 0839
What is 5 divided by 1/4?
A 1/20 |
B 5/4
C 4/5
D 20
Answer:
D. 20
Step-by-step explanation:
You do KEEP CHANGE FLIP:
Multiply 5 by 4. You get 20/1 which is 20
In recent days, Rudy has worn a brown shirt on 5 days and shirts in other colors on 5 days. Considering this data, how many times would you expect Rudy to wear a brown shirt in the next 12 days?
Answer:
6
Step-by-step explanation:
5/10
1/2
then 6 trust me
Please help me solve this
Show work
NO LINKS!!!!!
Answer: The first one 5/10 is 0.5 or 50% 5÷10. The second one 5/100 is 0.05 or 500%. The third one 5/1000 is 0.005 or 5000%.
Step-by-step explanation:
All you have to do is divide and you do that for all of them. Also did you know quotient means the answer to a division question. Wow! Also, if you see that all I did was add another zero in the middle of the decimals is because That is Decimal Place value. Here is a picture of that just in case. The last answer for the very bottom one is what I just said about decimal place value so here is the reflection: When dividing by tens using decimals always be sure to use place value. Thank you I was happy to help!
-5 (2b+7) + b < -b -11
Answer:
b > -3
Step-by-step explanation:
-5(2b+7) + b< -b - 11
Distribute -5
-10b - 35 + b < - b - 11
Combine like terms.
-9b - 35 < - b - 11
Add b to both sides.
-8b - 35 < -11
Add 35 to both sides.
-8b < 24
Divide by -8. REVERSE THE SYMBOL!! because dividing by a negative number.
b > -3
The table shows the results of a survey about students' preferred subjects in middle
school. What is the probability that a randomly selected student from the survey is a
7th grader that prefers English? Write your answer as a fraction and NOT as a
decimal.
Answer:
19/149
Step-by-step explanation:
38/298 = 19/149
7th graders who prefer English out of all students
The sides of One World Trade Center in New York City form
eight isosceles triangles, four of which are 200 ft long at their base BC. The
length AC of each sloping side is approximately 1185 ft.
The value of ∠BAC in the isosceles triangle is 9.7°
Cosine rule
Cosine rule is used to show the relationship between the sides and angles of a triangle. It is given by:
a² = b² + c² - 2bc*cos(A)
where a, b, c are the sides of the triangle and A, B, C are the angles opposite the sides.
AB = AC = 1185 (isosceles), BC = 200, let ∠BAC = x°, hence:
200² = 1185² + 1185² - 2(1185)(1185)cos(x)
2(1185)(1185)cos(x) = 2808450
cos(x) = 0.9857
x = 9.7°
The value of ∠BAC in the isosceles triangle is 9.7°
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Can someone help me please i’ll will give brainiest
Answer:
[tex]y = (5 + x)^2[/tex]
Step-by-step explanation:
"The square of the sum of x and 5 is equal to y."
Let's use our clue words that indicate what our equation will be.
Let's start easy, equal to y.
y =
Now let's look at the rest of the sentence minus the phrase we just used.
The square of the sum of x and 5.
The sum of x and 5 goes first,
x + 5
and since we are looking for the square of x + 5:
(5 + x)^2
therefore,
[tex]y = (5 + x)^2[/tex]
Answer:
square of y looks like y2
five times y2is written 5y2
square of x looks likes x2
usually, a mathematical expression is written in alphabetical order x2+5y2
Kayla-
HOPE I GET BRAINLIEST!
Translate the sentence into an equation. The sum of 8 times a number and 9 equals 6. Use the variable y for the unknown number.
Answer:
8y + 9 = 6
Step-by-step explanation:
8 times a number (8y) and 9 (+9) equals 6 (=6)
Suppose the measure of <4 was 105º. Which
answer choice below represents is the measure of
<1?
A. 180°
B. 105°
C. 75°
D. 15°
Answer:
C
Step-by-step explanation:
Angle 1 and angle 4 sit on the same straight line which means
<1 + <4 = 180
We are given that <4 = 105 degrees. So the equation above becomes.
<1 + 105 = 180 Subtract 105 from both sides
<1 = 180 - 105
<1 = 75
Help pls!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
im not good in this but thats insane.
12 meters
or what is problem?
PLEASE HELP ME TO UNDERSTAND
Answer:
x > 0Step-by-step explanation:
The denominator is positive for any value of x.
So we solve the numerator:
5ˣ - 1 > 05ˣ > 15ˣ > 5⁰x > 0Someone help me with this pls
Answer:
x° = 55°
Step-by-step explanation:
An exterior angle is equal to the sum of the remote interior angles:
x° = 21° +34°
x° = 55°
Find the product of (x 5)(x − 5). X2 − 10x 25 x2 10x 25 x2 − 25 x2 25.
Product of two polynomials can be done by distribution of multiplication over addition. The product of [tex](x+5)(x-5) = x^2 - 25[/tex]
What is distributive property of multiplication over addition?Suppose a, b and c are three numbers. Then we have:
[tex]a(b + c) = a\times b + a\times c[/tex]
(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)
The product result of the given expression is obtained as:
[tex](x+5)(x-5) = x(x - 5) + 5(x - 5) \\\\(x+5)(x-5) = x^{1+1} - 5x + 5x - 25 = x^2 - 25[/tex]
Thus,
The product of [tex](x+5)(x-5) = x^2 - 25[/tex]
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A B (2x + 53) 10. The figure shows a trapezium ABCD where AB // DC. Find the value of x and of y. D C x 5x² 2.237 A B 11. The figure shows a kite ABCD where AB = AD. RC - and the diagonals AC and BD intersect
Answer:
x = 30
y = 114
Step-by-step explanation:
considering DC || AB the sum of angle <D and angle <A must be equal to 180 because they are supplementary:
5x + x = 180 add like terms
6x = 180 divide both sides by 6
x = 30
Same goes for angle <C and angle <B:
y + 2.2x = 180 we know the value of x is 30
y + 2.2*30 = 180
y + 66 = 180 subtract 66 from both sides
y = 114
circle has a radius of 13 cm, What is its circumference?
Answer:
C≈81.68cm is the answer.
graph the equation.
- 5/4 (x-1)(x+3)
Answer:
Step-by-step explanation:
So, to graph a parabola we must have at least 3 points, the x intercepts and the turning point. Currently the equation is in x intercept form which means that we know straight away (assuming the equation =0) that the x intercepts are:
(1,0) and (-3,0)
Now we have to find the turning point and we can do this by putting the equation into turning point form:
-5/4([tex]x^{2} +2x-3[/tex])
-5/4(([tex](x+1)^{2} -3-1[/tex])
-5/4[tex](x+1)^{2}+5[/tex]
Now we can figure out the turning point which is:
(-1,5)
Graph those three points and you should get a parabola shape