Answer:
$ 46 and it's not enough
Step-by-step explanation:
6 + 5x
x = weeks
so after 8 weeks, his money should be
6 + 5(8) = 6 + 40 = $ 46
Not enough for buying RC model airplane
The money for Louis have after 8 week will be $46.
And, It is not enough.
What is an expression?
Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The plane cost $48. His grandfather gave him $6 and his mother gave him an allowance of $5 per week.
And, He would have 6+5x dollars after x weeks.
Now,
The money after 8 week = 6 + 5 × 8
= 6 + 40
= $46
Thus, The money for Louis have after 8 week will be $46.
Since, The plane cost $48.
Hence, It is not enough.
Therefore, The money for Louis have after 8 week will be $46.
And, It is not enough.
Learn more about the mathematical expression visit:
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IMAGE 1: Find the value of the indicated trigonometric ratio cos α
IMAGE 2: Find the value of the indicated trigonometric ratio sin β
IMAGE 3: Find the value of the indicated trigonometric ratio cot γ
IMAGE 4: Find the value of the indicated trigonometric ratio tan α (WORTH 30 POINTS!) Thanks!
Answer:
28.07° ; 70.53° ; 53.13° ; 36.87°
Step-by-step explanation:
Using PYTHAGORAS RULE :
IMAGE 1:
value of cos α equals :
cos α = Adjacent / Hypotenus
cos α = 15 / 17
cos α = 0.88235
α = cos^-1 (0.88235)
α = 28.07°
IMAGE 2:
sin β = Opposite / Hypotenus
sin β = 14√2 / 21
sin β = 0.9428
β = sin^-1(0.9428)
β = 70.53°
IMAGE 3:
From trigonometry :
cot = 1 / tan
Tan = Opposite / Adjacent
Therefore, Cot = Adjacent / Opposite
cot γ = 3/4
cot γ = 0.75
γ = cot^-1 (0.75)
γ = 53.13°
IMAGE 4:
tan α = Opposite / Adjacent
tan α = 15 / 20
tan α = 0.75
α = tan^-1 (0.75)
α = 36.87°
Answer:
15
Step-by-step explanation:
There is a number written on the board. One student increased the number by 23, but another student decreased the same number by 1. The first student’s result was 7 times greater than the result of the second student. What is the number written on the board?
Answer:
5
Step-by-step explanation:
Let's call the original number x.
So, the first student did x+23, and the other student did x-1.
You know that the first students result was 7 times larger than the other students. So, you can make the equation:
x+23=7(x-1)
x+23=7x-7
Then, do the algebra
-6x=-30
x=5
Answer:
5
Step-by-step explanation:
let the number =x
x+23=7(x-1)
x+23=7x-7
7x-x=23+7
6x=30
x=30/6=5
Khan academy question
Step-by-step explanation:
There it is..................
Answer:
(2,5)
Step-by-step explanation:
Which of the following lies between 0 and -1?
0
-3
-2/3
-4/3
Answer:
-2/3
Step-by-step explanation:
We need a negative fraction
The numerator has to be smaller than the denominator to be between 0 and -1
Answer:3rd one
Step-by-step explanation:
Calculate the mean and median of: 202, 199, 223, 199, 223, 256, 301, 199
a. mean = 199, median= 212.5
b. mean = 225.25, median = 199
c. mean = 225.25, median = 212.5
d. mean = 212.5, median = 225.25
Answer:
C. mean =225.25, median= 212.5
Step-by-step explanation:
You add all the numbers and divided by the total numbers to get mean, and for get the median you need to put them in order and get the number that is between all the number it be the 202 and 223 so you divide the two number with two and it will be 212.5
Answer:
C. mean =225.25, median= 212.5
Step-by-step explanation:
Can u please help me , I’m stuck on this .
Answer:
Use this website it gives you the answer and show the work
math
way
dot
com
Step-by-step explanation:
Answer:
24a: n = 5/14
24b: p = 18
25a: (x + 11) (x - 12)
25b: x (x + 2) (x - 2)
Step-by-step explanation:
I hope this helps
the students in Mrs. Kranger's class are holding a car wash to raise money for their end- of- year field trip. they washed 45 cars by noon, and their goal is to wash 110 cars by the end of the day. write and solve an addition equation to find c, the number of cars they still need to wash to meet their goal.
Answer:
45 + c = 110
c = 65
Step-by-step explanation:
110 - 45 = 65
Please mark as brainliest!
Answer:
They need to wash 65 more cars to reach their goal.
Step-by-step explanation:
45+c=110
subtract 45 from both sides
c=65
what is the different between -4 and 6.
Answer:
I'm guessing you would like to know what -4 - 6 is? It's -10.
Step-by-step explanation:
-4 - 6 = -10
You add -4 and 6, and you get -10. I hope this helped or you meant to phrase the question differently.
Answer:
The difference between -4 and 6 is 10
Step-by-step explanation:
Hope this helps :)
Solve for x in the triangle. Round your answer to the nearest tenth.
Answer:
8.5
Step-by-step explanation:
For this we will use trigonometry.
First lable the diagram: 13 will be the hypotenuse (H), x will be the opposite(O). Therefore, we will use sin as it is SOH.
sin Θ = [tex]\frac{O}{H}[/tex]
sin 41 = [tex]\frac{x}{13}[/tex]
x = 13 sin 41
Type this into the calculator, then you will get 8.5287677377. Round this to the nearest tenth will be 8.5.
As the question does not give any units, there will be no need to write any units after the answer.
Hope this helps
Answer: 8.53
Step-by-step explanation:
Calculated based on 2 given angles and 1 given side.
∠C = 180° - A - B = 49°
x = hypoteneuse·sin(A)/sin(B) = 8.53
Helpppppp pleaseeeee
Answer:
B. ( - 2, - 5)
Step-by-step explanation:
Coordinates of point A are ( - 2, - 5).
Help please I don’t understand the concept
Answer:
B
Step-by-step explanation:
The question is asking for what y would be when x is 2.
So, look on the graph where x = 2.
When x = 2, y = 6.
This means after 2 hours, the cost is $6
I nedd help on this please
Answer:
c sqrt( ( x2-x1) ^2 + ( (y2-y1) ^2)
Step-by-step explanation:
The distance formula is
d = sqrt( ( x2-x1) ^2 + ( (y2-y1) ^2)
It is the difference between the coordinates. It is based on the Pythagorean theorem
The radius of a circle is 9.7 m. Find the circumference to the nearest tenth?(help its urgent)
Answer:
Step-by-step explanation:
Circumference C=2πr r=radius [tex]\pi =3.14[/tex]
C=2(3.14)9.7
C=60.9
help me with this answer plz
Answer:
Neither angle P nor angle Q is exactly 45 degrees, but both are closer to 45 degrees than are the other choices.
Step-by-step explanation:
please need help I will be MARKING as BRIANILIST. thank you so much.
Answer:
C. Multiply 3 by 18
Step-by-step explanation:
Susan reads:
1 page in 3 mins
So,
1 page = 3 mins
If we want the time for 18 pages, we would multiply both sides by 18
So,
18 pages = 3×18 mins
18 pages = 54 mins
Answer:
C
Step-by-step explanation:
1 page every 3 minutes
18 pages will take 3 × 18 = 54 minutes to read.
Can someone please help
Answer:
D
Step-by-step explanation:
The figure A will be translated 6 units to the left to make it on figure B
Help please I’m just tryna get everything done and I’m doing something wrong every time I try to solve these
Answer:
(A) It's 6/5 (B) It's 7/8
Step-by-step explanation:
Divide each term by -6 simplify.
Hope this helped you! I don't understand the last one sorry.
Answer:
14- yes
15-No
16-11.5
Step-by-step explanation:
14- yes ( attached a picture) 5/6
15-no, because Direct Variation: It is known as the relationship between two variables where the variable quantities have a constant ratio.
8y=7x-27
y=7/8 x-27/8
16- ky=x where k is the constant variation
k=166/83=2
ky=x when x=23
y=x/k=23/2=11.5
8. A goldsmith has 130 grams of a gold alloy (a mixture of gold and one or more other metals) containing 85% pure gold. How
much pure gold must be added to this alloy to obtain an alloy that is 90% pure gold?
The amount of pure gold that should be added is
grams.
(Type an integer or a decimal.)
Answer: 65 grams
Step-by-step explanation:
If 130 grams of a gold alloy (a mixture of gold and one or more other metals) containing 85% pure gold, you should first calculate the amount of gold that makes up this percentage.
That is, 85% of 130 grams.
85/100 × 130 = 110.5
Then, let X be what will be added to the above value to make 90%. So,
(110.5 + X) / ( 130 + X ) × 100 = 90
Divide both sides by 100
(110.5 + X) / ( 130 + X ) = 90/100
(110.5 + X) / ( 130 + X ) = 0.9
Cross multiply and open the bracket
110.5 + X = 117 + 0.9X
Collect the like terms
X - 0.9X = 117 - 110.5
0.1X = 6.5
Divide both sides by 0.1
X = 6.5/0.1
X = 65 grams
Therefore, the amount of pure gold that should be added is 65 grams
If you flip a coin and pick a number tile from a bag of beans containing 4 different numbered beans at the same time, how many possible outcomes are there? A. 2 B. 4 C. 8 D. 12
Answer:
a
Step-by-step explanation:
Solve the following inequality
X-4
——- > - 5
5
X-4 /3 > -5
Multiply both sides by 3
X-4 > -15
Add 4 to both sides
X > -11
Answer:
[tex] \frac{x - 4}{3} > - 5[/tex]
[tex]x - 4 > 3 \times ( - 5)[/tex]
[tex]x - 4 > - 15[/tex]
[tex]x > - 15 + 4[/tex]
[tex]x > - 11[/tex]
Step-by-step explanation:
Which set of numbers is arranged in increasing order?
Answer:
B
Step-by-step explanation:
To solve this, we can make all of the numbers decimals.
π=3.14159265 and so on
Root 10 is about 3.16227766
22/7 is about 3.14285714
3.14 is already a decimal.
Now, our numbers are far easier to compare.
Let's put the numbers in increasing order.
3.14, 3.14159265, 3.14285714, 3.16227766
Substitute the original numbers in.
3.14, π, 22/7, Root 10
Therefore, option B is correct.
5.
Name the set(s) of numbers to which –5 belongs.
whole numbers, integers, rational numbers
whole numbers, natural numbers, integers
integers, rational numbers
rational numbers
Answer:
integers, rational numbers
Explanation:
Integers are any whole number (positive or negative). -5 is a whole number, not a fraction or decimal.
Rational numbers can be written in the fraction form a/b where a and b are both integers and b does not equal 0. -5 can be written as -5/1.
There are two sets of real numbers that include the number -5. which represents integers and rational numbers.
What is a rational number?A rational number is defined as a numerical representation of a part of a whole that represents a fraction number.
It can be a/b of two integers, a numerator a, and a non-zero denominator b.
What are Integers?Integers are defined as the collection of Whole Numbers and the negative values of Natural Numbers make up an integer. Fractional numbers are not included in integers. Integers are represented by the symbol Z.
The result is rational because -5, can be expressed as a ratio of two integers that can be -5/1 of two integers, a numerator 5, and denominator 1 ( which is a non-zero).
There are two sets of real numbers that include the number -5.
It represents Integers and rational numbers.
Hence, the correct answer would be Option (C).
Learn more about Integers here :
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Which equation is quadratic in form
Answer:
The answer is A because the quadratic equation formula
Step-by-step explanation:
because the quadratic equation formula is
ax^2+bx+c=0
and when you sub A into it, you get it in the needed form
Answer:
The Answer is A
Step-by-step explanation:
During a fancy fair organized at school, the total amount of money collected was $54 000. The following table represents the amount of money collected from the different items:
Food and drinks: 27 000
Entertainment: 6000
Games: 12 000
Donations: 9000
What percentage of the money collected does each item represent?
Answer: Collected amount÷total amount x 100
Step-by-step explanation:
Food and drinks = [tex]\frac{27000}{54000}[/tex] x 100 = 50%
Entertainment = [tex]\frac{6000}{54000}[/tex] x 100 = 11% (11.1 - .1 recurring)
Games = [tex]\frac{12000}{54000}[/tex] x 100 = 22% (22.2- .2 recurring)
Donations = [tex]\frac{9000}{54000}[/tex] x 100 = 17% (16.6- .6 recurring)
Double checking - 50 + 11 + 22 + 17 = 100%
Hope this helps! :)
Answer:
Food & drinks = 50%
Entertainment = 11.1%
Games = 22.2%
Donations = 16.7%
Step-by-step explanation:
Basically, divide all of the amounts to $54000.
What I did was divide them, my answers are basically close to the exact percentage.
The system of equations y = one-fourth x minus 5 and y = negative one-half x minus 3 is shown on the graph below. On a coordinate plane, 2 lines intersect around (2.8, negative 4.2). Which statement is true about the solution to the system of equations? The x-value is between 2 and 3, and the y-value is between –4 and –5. The x-value is between –4 and –5, and the y-value is between 2 and 3. The x-value is between –2 and –3, and the y-value is between 4 and 5. The x-value is between 4 and 5, and the y-value is between –2 and –3.
Answer:
The x-value is between 2 and 3, and the y-value is between –4 and –5
Step-by-step explanation:
The system of equations:
y = 1/4x - 5
y = -1/2x - 3
is shown in the figure attached. There it can be seen that the solution is (2.667, -4.333). This can be corroborated as follows:
y = 1/4(2.667) - 5 = -4.333
y = -1/2(2.667) - 3 = -4.333
Answer:
A its a
Step-by-step explanation:
What is the median number of hours volunteered by the students in
the survey?
The median number of hours volunteered is hours.
Answer:
40
Step-by-step explanation:
The sum equals 80 80/2=40
Answer:
3
Step-by-step explanation: If you write out all the numbers and you cross them out in order you will find that 3 is your median.
So I’m not great in math at all I spent 15 min crying because I don’t get it so anyone pls help
Answer:
A
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )
Here b = 13 and h = 4 , thus
A = [tex]\frac{1}{2}[/tex] × 13 × 4 = [tex]\frac{1}{2}[/tex] × 52 = 26 units² → A
Answer:
A, 26
Step-by-step explanation:
Since the area of a triangle is one half base times height, and we have our height as 4, and our base as 13, we get 1/2 * 13 * 4, which is equal to 13 times 2, which is 26. Thus, our answer is A, 26.
Solve 2x + 4 > 16
A. X < 6
B. X > 6
C. X < 10
D. X > 10
Answer:
B
2(6)+4 > 16 x > 6 2(7) + 4 > 16
12+4=16 14+4>16 18>16
(
[tex]( {8x}^{2} + 4x + 4) - (7x + 9)[/tex]
solve
Answer:
[tex]8x^{2} -3x-5[/tex]
Step-by-step explanation:
[tex]8x^{2} +4x+4-7x-9[/tex]
[tex]8x^{2} +4x-7x+4-9[/tex]
[tex]8x^{2} -3x-5[/tex]
The ratio of the angle measures of a triangle is 1:2:2. What is the value of the smallest angle? 180° 90° 72° 36°
Answer:
36 degrees.
Step-by-step explanation:
All the angles in a triangle add up to be 180 degrees. Since the ratio is 1:2:2, you can say that the angles are x, 2x, and 2x.
x + 2x + 2x = 180
5x = 180
x = 180 / 5
x = 36
Since the smallest part of the ratio is 1, the smallest angle is 36 degrees.
Hope this helps!