Answer:
23
Step-by-step explanation:
20*2*1=40
20+2+1=23
Hector's service club is raising money by wrapping presents in the mall. The function f\left(x\right)=3xf(x)=3x describes the amount of money, in dollars, the club will earn for wrapping x presents. They only have enough wrapping paper to wrap 1000 presents. What does f\left(658\right)f(658)?
Given:
The function f(x) describes the amount of money, in dollars, the club will earn for wrapping x presents.
[tex]f(x)=3x[/tex]
To find:
The f(658).
Solution:
We have,
[tex]f(x)=3x[/tex]
Substitute x=658 to find the value of f(658).
[tex]f(658)=3(658)[/tex]
[tex]f(658)=1974[/tex]
It means, the club will earn $1974 for wrapping 658 presents.
Therefore, [tex]f(658)=1974[/tex].
If 2 inches on a map represents 25 miles, how many inches would represent 225 miles?
Answer:
18 inches
Step-by-step explanation:
It would be 18 inches because if 2 inches represent 25 miles and 225 divided by 25 is 9 that would mean 18 inches would be 225 because instead of it being 25*18=225 which it doesn't it would be 12.5*18=225 which is true
Helen buys 2 pineapples. She pays with a £5 note and gets £3.60 change. Work the cost of one pineapple.
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
The cost of one pineapple is £0.7.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Number of pineapples = 2
Amount given = £5
Amount returned = £3.60
The cost of the two pineapples.
= 5 - 3.60
= £1.40
The cost of one pineapple.
= 1.40/2
= 140/200
= 14/20
= £0.7
Thus,
The cost of one pineapple is £0.7.
Learn more about expressions here:
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What is the measure of x?
Angles are not necessarily drawn to scale.
Answer:
180-97=83
x=83
Step-by-step explanation:
pls help; What is the length of side X in the triangle below?
Answer: 8
Step-by-step explanation:
In a 45-45-90 triangle, the hypotenuse is sqrt(2) times longer than the leg
what is the surface area of the sphere shown below with a radius of 6
Answer:
S.A=452.3893421
Step-by-step explanation:
A family is planting grass and a garden in the backyard. The rectangular backyard measures 131 ft by 52 ft. The garden measures 13 ft by 9 ft. What is the area of the backyard that will be grass?
Step-by-step explanation:
Find the area of the whole backyard: 131 x 52 square feet
Find the area of the garden: 13 x 9 square feet
hope this helps :)
Answer:
13 times 9=117
131 times 52=6812
Step-by-step explanation:
maths x=139 times 95847576564 find x
Which of the following fractions is equivalent to 19.25?
a. 19/25
b. 77/4
c. 19/4
d. 19/8
Answer:
C. 19/4 Answer CORRECT
Solve.
–8x − 2y = –20
x + 2y = 13
Answer:
X=1, y=6
Step-by-step explanation:
Let's solve your system by substitution.
−8x−2y=−20;x+2y=13
Rewrite equations:
x+2y=13;−8x−2y=−20
Step: Solvex+2y=13for x:
x+2y=13
x+2y+−2y=13+−2y(Add -2y to both sides)
x=−2y+13
Step: Substitute−2y+13forxin−8x−2y=−20:
−8x−2y=−20
−8(−2y+13)−2y=−20
14y−104=−20(Simplify both sides of the equation)
14y−104+104=−20+104(Add 104 to both sides)
14y=84
14y
14
=
84
14
(Divide both sides by 14)
y=6
Step: Substitute6foryinx=−2y+13:
x=−2y+13
x=(−2)(6)+13
x=1(Simplify both sides of the equation)
Answer:
x=1 and y=6
Hope this helped!
I am not sure how to do this −(−2−5x)+(−2)=18
If a skateboarder performs 20 tricks during practice and 45% of the tricks are heelflips, how many heelflips does the skateboarder perform?
CAN ANYONE HELP KE WITH THESE TWO QUESTIONS AND SOLVE I WILL GIVE BRANIEST
Find the volume of the cylinder.
Find the volume of a cylinder with the same radius and double the height.
Answer:
Original cylinder:
Exact: [tex] V = 243 \pi~in.^3 [/tex]
Approximate: [tex] V = 763.4~in.^3 [/tex]
Double height cylinder:
Exact: [tex] V = 486 \pi~in.^3 [/tex]
Approximate: [tex] V = 1526.8~in.^3 [/tex]
Step-by-step explanation:
Original cylinder:
[tex] V = \pi r^2 h [/tex]
[tex]V = \pi \times (9~in.)^2 \times 3~in.[/tex]
Exact: [tex] V = 243 \pi~in.^3 [/tex]
Approximate: [tex] V = 763.4~in.^3 [/tex]
Cylinder with the height doubled:
[tex] V = \pi r^2 h [/tex]
[tex]V = \pi \times (9~in.)^2 \times 6~in.[/tex]
Exact: [tex] V = 486 \pi~in.^3 [/tex]
Approximate: [tex] V = 1526.8~in.^3 [/tex]
so for the first question its answer is 763.02 in and for the second one its 1,526.04
Step-by-step explanation:
1.
V = π r^2h
π = 3.14
V = 3.14 x 9^2 x 3
V= 3.14 x 81 x 3
V = 3.14 x 243
V = 763.02 in
2.
So we already know that 9^2 is 81 and that double 3 is 6
V = 3.14 x 81 x 6
V = 3.14 x 486
V = 3.14 x 486
V = 1,526.04 in
PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS ASAP
Answer:
(0, 6)
explanation:
original coordinates of C: (5, -6)if reflected over x-axis, then use the formula: (x,y) → (x, -y)
new coordinates: (5, 6)then if translated -5 horizontally, there will be change in x axis
new coordinates: (5-5, 6) → (0, 6)Help, I can’t find total area. I think it’s either c or d
#2
Step-by-step explanation:
12+12+12+10+10=56
Perimeter=56 inches
Triangle Area=48
Square Area= 144
144+48=192 square inches
Hope this helps! :)
Edward is playing a game where he draws cards with integers on them from a deck of cards. If the integer is positive he moves forward that many steps, if the integer is negative he moves back that many steps. Edward drew the following cards: 3, -3, -4, 5, 10, -7.
Where does Edward end up in relation to where he started?
A) 4 steps behind where he started.
B) 4 steps in front of where he started.
C) 32 steps behind where he started.
D) 32 steps in front of where he started.
Answer:
B) 4 steps in front of where he started.Step-by-step explanation:
Edward drew the following cards: 3, -3, -4, 5, 10, -7
He follows the steps:
3 -3 - 4 + 5 + 10 - 7 = 4Positive 4 means 4 steps ahead
Correct option is B)
Using the data from the theoretical probability table, what is the probability of the spinner landing only once on yellow in two spins? 0.0625 0.5625 0.375 1
The probability of the spinner landing only once on yellow in two spins is 0.375. Then the correct option is C.
What is probability?Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen. It is the ratio of the favorable event to the total number of events.
The total sample will be
Total sample = 16 {RR, BB, YY, GG, RB, BR, RY, YR, RG, GR, BY, YB, BG, GB, YG, GY}
The probability of the spinner landing only once on yellow in two spins will be
Favorable event = 6 {YR, RY, YG, GY, YB, BY}
Then probability will be
[tex]P = \dfrac{6}{16}\\\\P = 0.375[/tex]
More about the probability link is given below.
https://brainly.com/question/795909
Answer: c is correct
Step-by-step explanation:
8. Rewrite 3 square root of 7 with exponents
Answer:
7^1/3
Step-by-step explanation:
the answer is 7 to the exponent of 1/3
Expand it please
(2/7z-3/5x)2
Answer: [tex]\bold{\dfrac{4}{49}z^2-\dfrac{12}{35}xz+\dfrac{9}{25}x^2}[/tex]
Step-by-step explanation:
[tex]\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)\\\\\\=\dfrac{2}{7}z\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)-\dfrac{3}{5}x\bigg(\dfrac{2}{7}z-\dfrac{3}{5}x\bigg)\\\\\\=\dfrac{4}{49}z^2-\dfrac{6}{35}xz-\dfrac{6}{35}xz+\dfrac{9}{25}x^2\\\\\\=\dfrac{4}{49}z^2-\dfrac{12}{35}xz+\dfrac{9}{25}x^2[/tex]
For each diagram below, write and solve an equation.
KT is tangent to circle L and the central angle mZTLK = 55°. What is mZLKT? K T L
The measure of m<LKT from the figure is 35 degrees
Tangential line to a circleLine tangential to a circle is at 90 degrees to the circle.
Given the following parameter
m<TLK = 55 degrees
According to the theorem above:
m<TLK + m<LKT = 90
m<LKT = 90- m<TLK
m<LKT = 90 -55
m<LKT = 35 degrees
Hence the measure of m<LKT from the figure is 35 degrees
Learn more on circle theorem here:
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The radius of a circle is 9 miles. What is the circle's area?
Use 3.14 for .
give brainliest
Answer:
254.34 miles²
Step-by-step explanation:
How do we find the area of a circle?
The area of a circle can be found using πr², where r = radius. We have the radius as 9 miles, and pi is shortened to 3.14.Solving
[tex]3.14*9^2[/tex] [tex]3.14*81[/tex][tex]254.34[/tex]Therefore, the area is 254.34 miles².
Have a lovely rest of your day/night, and good luck with your assignments! ♡
Answer:
Formula for area of a circle:
πr^2,
where pi is equal to 22/7 or 3.14
and r is the radius that is being squared
Plug in the actual values to this formula to find the area;
a = πr^2
a = 3.14 x 9^2
a = 3.14 x 81
a = 254.34, your answer is 254.34 square miles.
simplify this expression
8x-3y+3x-2y
Hey there!
In order to simplify this expression, we need to combine like terms.
Remember, like terms are terms from the same "family". not terms that you like. :)
So, the like terms here are
8x, 3x
and
-3y and -2y
Combine them:
8x-3x-3y-2y
Hence, the answer is
[tex]\boxed{\boxed{\bold{5x-5y}}}[/tex]
Hope everything is clear.
Let me know if you have any other questions; if you do, please comment.
#LearningIsAlwaysFun
#KeepLearning
[tex]\rule{200}{2}[/tex]
4. Tanya has the equation x - 2 = 2x - 4. She states that adding x + 2 to both sides will keep the
solution set the same because of the additive property of equality. Diego states that you could
also multiply both sides of Tanya's equation by x+2 and have the same solution set because of
the multiplicative property of equality.
a) is tanyas statement correct?
b)is diego’s statement correct ?
Answer:
Tanya is correct.
Step-by-step explanation:
a). Tanya has the equation,
x - 2 = 2x - 4
x - 2x = 2 - 4
-x = -2
x = 2
By adding (x + 2) on both the sides of the equation,
(x - 2) + (x + 2) = (2x - 4) + (x + 2)
2x = 3x - 2
2x - 3x = -2
x = 2
Tanya is correct.
b). By Diego's statement
(x - 2)(x + 2) = (2x - 4)(x + 2)
x² - 4 = 2x²- 8
x² - 2x² = 4 - 8
-x² = -4
x² = 4
x = ±2
Therefore, Diego's statement is incorrect.
If you split an equilateral triangle exactly in half you create two Right 45 triangles or 30-60-90 triangles
Answer:
30-60-90
Because the angle of 60 splits and you get two 30 and the 90
Step-by-step explanation:
cos (3 X +6 ) =sin 30
What is the solution to the equation log(2x + 4) = 2? Round to the nearest thousandth, if necessary.
Enter your answer in the box.
Answer:
x = 48
Step-by-step explanation:
[tex]\log_{10}(2x+4)=2[/tex]
[tex]\implies 10^{\log_{10}(2x+4)}=10^2[/tex]
[tex]\implies 2x+4=100[/tex]
[tex]\implies 2x=96[/tex]
[tex]\implies x=48[/tex]
In 1925, airplane engines were cooled with water. Water freezes at a temperature of 32º Fahrenheit. Average winter low temperatures in Alaska are 50º colder than that. What is Average winter low temperature in Alaska?
Answer:
From November to March, the temperature in Alaska is between 0°F/-18°C and -30°F/-35°C, which is very cold. May and September are both often the driest and the wettest months in Alaska's summer.
I hope this helps you
:)
ILL GIVE THE BRAINLIEST
Use textual evidence and inferences drawn from The Outsiders to describe how this interaction between Ponyboy and Cherry demonstrates that human interactions are challenging. Highlight the specific textual evidence and make annotations to record your inferences.
Use textual evidence
Inference interaction between Ponyboy and Cherry
Demonstrates human interactions are challenging
Write a short answer response:
Make sure to include T. A. G. S with answer.
Textual evidence. Explanation of evidence
Analysis and concluding sentence
Inference can be used in narration after reasonable logical constructions have been made through the use of evidence.
What is Inference?This refers to the conclusion reached based on the use of evidence and deductive reasoning.
Hence, inference is useful when finding a conclusion about something based on already made input about a character and their changing roles in a literary text.
Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.
Read more about inferences here:
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Aeen is drinking a beverage that has a pH of 3. 3. Marien is drinking a beverage that has a pH of 2. 7. About how many times the hydrogen ion concentration of Aeen’s drink is the hydrogen ion concentration of Marien’s drink? Round to the nearest whole number.
The number of times the hydrogen ion concentration of Aeen’s drink is the hydrogen ion concentration of Marien’s drink is 4 approx.
How to decide how many times some number is bigger?The phrase "times bigger" shows this:
If a number 'x' is 't' times bigger than 'y', then that means:
[tex]x = t \times y[/tex]
It is because 'y' had to multiply itself with 't' to get in equal level of 'x'
How to find the hydrogen ion concentration from the pH value?A solution with 'x' as its pH contains [tex]10^{-x} mol/L[/tex] of hydrogen ions.
For the considered case, we have:
pH of beverage drank by Marien = 2.7,Thus, its hydrogen ion concentration is [tex]10^{-2.7}[/tex] = x (say)
pH of beverage drank by Aeen = 3.3,Thus, its hydrogen ion concentration is [tex]10^{-3.3}[/tex] = y (say)
Then, let x is t times bigger than y, then that means:
[tex]x = t\times y\\\\t = \dfrac{x}{y} = \dfrac{10^{-2.7}}{10^{-3.3}} = 10^{-2.7 - (-3.3)} = 10^{-0.6} \approx 4[/tex]
It is because of the property [tex]a^b \times a^c = a^{b+c}[/tex]
Thus, hydrogen ion concentration of Marien's drink is approx 4 times the hydrogen ion concentration of Aeen's drink.
Learn more about hydrogen ion concentration here:
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I need the right answer pls :D
Answer:
x = 49
Step-by-step explanation: