Determinar un numero, que disminuido en sus 1/4 partes equivale a su duplo aumentado en 30. Una cuerda de 180m se corta en tres trozos: trozo A B Y C. Calcular cuantos miden los trozos sabiendo que el trozo B y el trozo C miden el doble y el triple que el trozo A, respectivamente.
Answer:
x = 240
A = 30 m, B = 60 m, C= 90 m
Step-by-step explanation:
a) Nosotros debemos determinar un numero;
para cual [tex]\dfrac{1}{4}x = 60[/tex]
[tex]0.25 x = 60[/tex]
Divide ambos lados entre 0.25; tenemos :
[tex]\dfrac{0.25 x}{0.25}= \dfrac{60}{0.25}[/tex]
x = 240
b) A 180 m se corta en tres piezas A, B y C
Entonces;
Si la pieza B y la pieza C miden el doble y el triple de esa pieza A, respectivamente. Entonces; tenemos
x + 2x + 3x = 180
6x = 180
Divide ambos lados entre 6; tenemos:
[tex]\dfrac{6x}{6} = \dfrac{180}{6}[/tex]
x = 30 m
Si A = x = 30 m
B = 2x = 2×30 m = 60 m
C = 3x = 3×30 m = 90 m
Así; A = 30 m, B = 60 m, C= 90 m
I need help with question number 3
Hey there! I'd be delighted to help you out!
First, let's write down our expression!
[tex](x^2-x)+(8x-2x^2)[/tex]
When we look at this expression, we see that all of the numbers are terms, or numbers that are added. We have four terms in this equation, which are:
[tex]x^2, -x, 8x, -2x^2[/tex]
Now, to simplify, we want to combine like terms. Like terms are numbers that have the same variable (or no variable) and are raised to the same power. 1 and 5 are like terms because they both have no variable and they are both raised to the power of 1 (any number that is itself is raised to this power). 4x and 12x are like terms because they both have an x and a power of 1. 4y and 5x are not like terms because they have different variables. 4x³ and 2x² are not like terms because they are raised to different powers.
Now, we see that with our numbers, x² and -2x² are like terms, and -x and 8x are also like terms. We can combine accordingly.
[tex]x^2-2x^2=-x^2\\\\-x+8x=7x[/tex]
Now we combine to get our simplified expression!
[tex]-x^2+7x[/tex]
I hope that this helps! Have a wonderful day!
Can anyone help me with this please? Thanks again.
In a picture, a man measures 2.3 cm. His actual height is 1.78 m. He is standing beside a flagpole that measures 7.6 cm in the picture. What is the actual height of the flagpole, to the nearest tenth of a meter?
Answer:
5.88 meters
Step-by-step explanation:
This is a problem of scale factor which uses the concept of ratio.
scale factor is the ratio of length of actual figure to length of its model.
Example: if an architect is drawing design for a building
if height of building is 100 meter but he is drawing this on paper of 1 meter then scale factor will 100/ 1= 100: 1.
It means that for every 100 meter of length of building, it can be represented by 1 meter of its model.
Thus if a building has length 200 meter then its model will be of 200/100 = 2 meter length.
______________________________________
We will solve the given problem based on use of this concept.
Height of man = 1.78 meter
since in picture unit of measure is in cm, lets convert 1.78 meter to centimetre.
1 meter = 100 cm
1.78 meter = 100* 1.78 cm = 178 cm
height of man in picture = 2.3 cm
Scale factor = actual Height of man/Height of man in picture
= 178/2.3 = 77391
_________________________________________
ratio of actual height of flagpole / height of flagpole = actual Height of man/Height of man in picture
Substituting the value given in problem we have
actual height of flagpole/7.6 = 178/2.3
=>actual height of flagpole = (178/2.3)* 7.6 = 588.172 cm.
Thus height of pole is 588.172 cm.
In meter, height of pole is 588.172*100 cm
height of pole is 5.88 meters
PLZ HELP ME MY ASSIGNMENT IS DUE IN THE NEXT FEW MINUTES AND I HAVEN’T‘ DONE ANYTHING YET PLZ HELP ME
Answer:
C y=3x
Step-by-step explanation:
1 x 3 = 3
2 x 3 = 6
3 x 3 =9
Answer:
C. Y=3x i believe
Step-by-step explanation:
hope this helps
A TV has a listed price of $788.99 before tax. If the sales tax rate is 8.75%, find the total cost of the TV with sales tax included. Round your answer to the nearest cent, as necessary.
Answer:
$858.02
Step-by-step explanation:
Take $788.99 times 8.75% = 69.03 this is the amount of tax
Add 788.99 and 69.03 = 858.02
Answer:
the answer would be $858.03
Secant TP and tangent TR intersect at point T Chord SR and chord PO intersect
at point V. Find the values of x and y. If necessary, round to the nearest tenth.
A
x=2
y=4
B. x= 11.6
y = 11.6
C.
X = 11.6
y = 232
D. x = 18.3
y=36.6
Answer:
(C)x=11.6, y=23.2
Step-by-step explanation:
Using Theorem of Intersecting Secant and Tangent
[tex]TQ$ X TP=TR^2[/tex]
[tex]10(10+x+4)=16^2\\10(14+x)=256\\140+10x=256\\10x=256-140\\10x=116\\$Divide both sides by 10\\x=11.6[/tex]
Next, we apply Theorem of Intersecting Chords
PV X VQ=SV X VR
4 X x= 2 X y
Recall: x=11.6
2y=4 X 11.6
2y=46.4
y=46.4/2=23.2
Therefore: x=11.6, y=23.2
The correct option is C
Solve. - 5 3/4 - 3 1/2
Answer: Convert the mixed numbers to improper fractions, then find the LCD and combine.
Exact Form: −37/4
Step-by-step explanation:
A raffle Prize of 14x2/15 dollars is to be divided among 7x people. Write an expression for the amount of money that each person will recieve.
Answer:
2x/15 dollars.
Step-by-step explanation:
Each person receives
(14 *x^2 / 15 ) / 7x
= 2 x^2 / 15x
= 2x/15 dollars.
Mariam bought 8 gallon of gas for $31.12. How much would she pay for 11
gallons of gas at this same rate?
Answer:
$42.79
Step-by-step explanation:
Divide $31.12 by 8 to get how much money you pay for 1 gallon and multiply it by 11 to get how much to pay for 11 gallons.
pls help me thanks :)
Answer:
2+2 is 4 quick math
Step-by-step explanation:
find the area of the smaller sector. please help last question.
Answer:
The area of smaller sector is:
S = pi x 8^2 x 80/360 = 44.68 m2
Hope this helps!
:)
kaya has $25 left over after the football game she spent $17 for her ticket. She then bought a hat for $11 how much money did kaya bring to the football game
Natalie baked 20 cupcakes for a fundraising event at school. On the way to the event she dropped 35% of the cupcakes on the floor. What is the total number of cupcakes that natalie dropped?
Answer:
The total number of cupcakes that Natalie dropped is 7.
Step-by-step explanation:
This question can be solved using a rule of three.
The amount of cupcakes that she has, which is 20, is 100% = 1. How many cupcakes is 35% = 0.35?
20 cupcakes - 1
x cupcakes - 0.35
x = 20*0.35 = 7
The total number of cupcakes that Natalie dropped is 7.
Mal is putting money into a savings account. She starts with $350 in the savings account, and each week she adds $30.
Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Mal has been adding money. Write an
equation relating S to W. Then use this equation to find the total amount of money in the savings account after 19 weeks.
Answer:
Mal starts with 350 dollar
Each week she adds $30.
W is number of weeks Mal adds money.
S is total amount of money in her account.
=> S =30W + 350
After W = 19 weeks, Mal will have 30 x 19 + 350 = 920 dollar
Julie conducts an experiment to find the average word length in a book for a 4th grader and a book for a 8th grader. She finds that for the fourth grade book the mean word length is 5 letters with a range of 6 and for the 8th grade book the mean word length is 6 letters with a range of 9. Which statement is true?
A) On average, the book for the 4th grader has longer words.
B) There is not enough information to know if any of the above are true.
C) The word length varies more in the 8th grade book than the 4th grade book.
D) The longest word in the book for the 4th grader is longer than that in the 8th grade book.
Answer: C
Step-by-step explanation: I chose this answer because in 8th graders, their mean is 6 and their range is 9, that’s a difference of 3. But in 4th graders, their mean is 5 and their range is 6, so there isn’t much of a difference for 4th graders. The answer couldn’t be A, B, or D so I came to the conclusion that it’s C. (Sorry if this explanation doesn’t make sense but I hope I got the right answer.)
The true statement is the word length varies more in the 8th grade book than the 4th grade book.
Mean is a measure of central tendency. It is the average of a set of values. For example, if the numbers in a data set are 3,2,10, the mean is (3 + 2 + 10) /3 = 5
Range is the highest number less the least number in a data set. For example, if the numbers in a data set are 3,2,10, the range is 10 - 2 = 7
The mean word length for the fourth grade book is 5. While, the mean word length for the eighth grade book is 6. This means that on average, the average word length of the eighth grade book is greater than the mean word length for the fourth grade book
The range word length for the fourth grade book is 6. While, the range word length for the eighth grade book is 9. These means that either the longest word in the eighth grade book is more than that of the fourth grade book or that the smallest word in the eighth grade book is less than than that in the fourth grade book. This means that the word length varies more in the 8th grade book than the 4th grade book.
To learn more about mean, please check: https://brainly.com/question/12528427?referrer=searchResults
what are the exact solutions of x^2 - x - 4 = 0 ?
Answer:
2.56 and -1.56
Step-by-step explanation:
Using the quadratic formula you can plug in each term (a,b and c) and come to 1 ± sqrt(17)/2. Rounding to the nearest hundredth, this comes out to 2.56 and -1.56. Hope that helps :)
what’s the answer for this question
Answer:
84 Square Inches.
Area = Side length x Side length
Look at the attached picture
Hope it will help you
If 0≤θ≤90 and sin(θ) = p, then which of the following gives the value of tan(θ)?
1)p/1-p
2)(√ 1-p^2)/p
3)p/(√ 1-p^2)
4)√1-p^2
Answer:
p/√(1-p^2)
Step-by-step explanation:
Firstly we can write our sin (θ) = p/1
Mathematically, the sine of an angle refers to the ratio of the opposite to that of the hypotenuse. Hence we can say that p is the opposite while 1 is the hypotenuse of the right-angled triangle.
Now to get the third side of the right angled triangle, we use the pythagoras’ theorem. This states that the square of the hypotenuse equals the addition of the squares of the other two sides of the right angled triangle. Thus, mathematically:
1^2 = p^2 + adjacent^2
Adjacent^2 = 1 - p^2
Adjacent = √(1-p^2)
The tan of an angle refers to the ratio of the opposite to the adjacent.
Thus, our tan here will be p/√(1-p^2)
Tan θ = p/√(1-p^2)
Answer:
3)p/(√ 1-p^2)
Step-by-step explanation:
In trigonometry, the three fundamental or basic functions are represented by the notation SOH CAH TOA where
SOH
Sin θ = opposite/hypotenuse
Cos θ = Adjacent / hypotenuse
Tan θ = Opposite / Adjacent
And from Pythagoras theorem,
Opposite ² + Adjacent ² = Hypotenuse²
Hence if Sin θ = p/1, the opposite side is p, the hypotenuse side is 1 then
the adjacent side from the equation above
Adjacent side² = 1 - p²
Adjacent side = √(1 - p²)
Tan θ = p/√(1 - p²)
A rectangular prism has a length 4 1/4 in., a width of 3 in., and height of 1 1/4 in.
which expressions can be used to find the volume of the prism.
Select EACH correct answer.
A.) 1 1/4 (3+4 1/4 )
B.) 4 1/4 times 3 times 1 1/4
C.) 12 3/4 times 1 1/4
D.) 1/2 (12 3/4 times 1 /14)
PLEASE HELP ALL 25 OF MY POINTS
Answer:
B, C.
Step-by-step explanation:
B, because you're multiplying them all, which is what you would do in the normal formula. You would get 255/16, or 15.9375.
C, since you would also get 255/16.
Please tell me if im wrong! im only a student .m.
can someone help me ?
Answer:
10 > v (if you don't trust me, check it yourself. Subsitute v for 10 in the first equation.
Step-by-step explanation:
1) 7 > v - 3
2) add 3 to both sides
3) so 7 plus 3 equals 10
So you basically do this
7 > v - 3 (ad 3 to both sides)
You get 10 > v (which is as simplified as possible)
Hope this helps! :)
What is the distance between the points (3, 7) and (15, 16) on a coordinate
plane?
A. 13 units
B. 21 units
C. 17 units
D. 15 units
Answer:15
Step-by-step explanation:
Because you do the distance equation
A triangle has an area of 160 square inches and the base of the
triangle is 40 inches. What is the height of the triangle?
Answer:
8 inches
Step-by-step explanation:
A=h /2
Solving for hb
hb= 2 A /b =2 × 160 /40 = 8 inch
( / means fraction line
Enrique collected 7 more than 2 times as many recyclable bottles as Natasha. Write an expression for the number of bottles they collected altogether
Answer:
12
Step-by-step explanation:
because 7x2 is 12
Answer:
3n+7
Step-by-step explanation:
Let's say the variable n stands for how many recyclable bottles Natasha collected.
Enrique collected 7 more than double of what Natasha has.
SO
2n+7
We also need to include Natasha's share
(2n+7) + n
OR 3n+7
What fraction completes the equation using a like denominator when adding 1/3 + 3/6 ?
1/3 + 3/6 = ?/? + 3/6
Answer:
The answer is 2/6 .
Step-by-step explanation:
In order to make the denorminator the same, you have to multiply both numerator and denorminator by 2 :
[tex] \frac{1 \times 2}{3 \times 2} [/tex]
[tex] = \frac{2}{6} [/tex]
Tanya has a garden with a trench around it. The garden is a rectangle with length 212m2 \dfrac12 \text{m} 2 2 1 m 2, start fraction, 1, divided by, 2, end fraction, start text, m, end text and width 2 m2 \text{ m} 2 m 2, start text, space, m, end text . The trench and garden together make a rectangle with length 312m3 \dfrac12 \text{m} 3 2 1 m 3, start fraction, 1, divided by, 2, end fraction, start text, m, end text and width 3 m3 \text{ m} 3 m 3, start text, space, m, end text . Find the area of just the trench.
Answer:
[tex]9 \dfrac12 m^2[/tex]
Step-by-step explanation:
Tanya has a garden with a trench around it.
Tanya's garden is a rectangle with length [tex]\dfrac12 \text{m}[/tex] and width 2m.
The trench and garden together make a rectangle with length [tex]3 \dfrac12 \text{m}[/tex] and width 3m.
We are to determine the area of just the trench.
Area of just the trench = Area of the trench and garden together-Area of the garden
[tex]=(3 \dfrac12 X 3)-(\dfrac12 X 2)\\\\=( \dfrac72 X 3)-1\\\\=\dfrac{21}{2}-1\\\\=9 \dfrac12 m^2[/tex]
The area of the trench is [tex]9 \dfrac12 m^2[/tex]
What is 9.9581 rounded to the nearest thousandth?
Answer:
9.958
Step-by-step explanation:
The thousandths spot is where the 8 is so you round 8 with the number behind it 1. Since 1 is below 5, you keep 8 the same and get rid of the 1.
Answer:
9.958
Step-by-step explanation:
find the number in the thousands place, 8 and then look 1 place to the right for the rounding digit 1. Round up if this number is greater than or equal to 5 and round down if it is less then 5.
Solve using elimination.
5x - 4y = -10
5x - 5y = -5
Answer:
(x,y) = (-6,-5)
Step-by-step explanation:
If you need the explanation let me know.
Answer:
x = -6
y = -5
Step-by-step explanation:
5x - 4y = -10
5x - 5y = -5
__________--
y = -5
5x - 4y = -10
5x - 4(-5) = -10
5x + 20 = -10
5x = -10 - 20
5x = -30
x = -30/5
x = -6
need answer ASAP a house shaped like an octagon has a large porch, as shown. what is the area of the house and the porch
Answer:
I think the answer is 775 square feet. Not 100% sure though
Answer:
875
Step-by-step explanation:
Hope this helps.
Which statements are true regarding elements of the given sets? Check all that apply. Paris ∈ F. The Statue of Liberty ∈ A. The Statue of Liberty ∉ M. Abraham Lincoln belongs to none of these sets. The Eiffel Tower is in more than one of these sets.
Answer:
Paris F, Abraham Lincoln belongs to none of these sets, and The Eiffel Tower is in more than one of these sets
Step-by-step explanation:
Answer:
A,D,E
Step-by-step explanation:
PLEASE HELP ME!!!!!!!!!!!! For her birthday party Ms. Burke mixed together 9 gal. of Hawaiian Punch fruit punch and 4 gal. of Shoprite Fruit Punch B. Hawaiian Punch Fruit Punch contains 5% fruit juice and Shoprite Fruit Punch contains 1% fruit juice. What percent of the mixture is fruit juice?
Answer:
1%
Step-by-step explanation:
