Answer:
she worked 12 hours as a carpenter and 18 hours as a blacksmith
Step-by-step explanation:
Let x = the number of hours for which she worked as a carpenter
Let y = be the number of hours for which she worked as a blacksmith
Total numbers of hours she worked = 30
x + y = 30 (1)
she earned a total $690. She earned $20 dollar per hour as a carpenter and $25 per hour as a blacksmith.
20 x + 25 y = 690 (2)
Equation (2) - 20 × Equation (1),
We get,
5 y = 90 ⇒ y = 18
After substituting this value in equation (1),
We get, x = 12,
Hence, She worked as a carpenter = x hours = 12 hours
And, as a blacksmith = y hours = 18 hours
A right triangle has side lengths 9, 40, and 41 as shown below.
B
40
Use these lengths to find cosB, tanB, and sin B.
9
Answer:
cos B = 9/41
tan B = 40/9
sin B = 40/41
Step-by-step explanation:
There is no picture, so I am making a few assumptions.
I am assuming that angle C is the right angle and is opposite 41.
I am also assuming that angle B is formed by the sides that measure 9 and 41. The hypotenuse is 41.
For angle B, the adjacent leg is 9, and the opposite leg is 40.
cos B = adj/hyp = 9/41
tan B = opp/adj = 40/9
sin B = opp/hyp = 40/41
Please help with this question
6. Find the measure of each angle in the figure below and explain how you found each
measure.
Step-by-step explanation:
2 = 15
because it's Vertically opposite angle(VOA)
1 = 180 -15 because it is straight line
1 = 165
1 = 3
3 = 165
because it's Vertically opposite angle(VOA)
A customer buys a different book for a selling price of 38$.The book is discounted 25%.The customer must pay 6% sales tax on the disocounted price of the book.How much does the customer pay for the book including tax.
Answer:
$30.21
Step-by-step explanation:
The tax rate is 6.8% what is the tax on $9.95 round to the nearest hundredth
Answer:
$0.68
Step-by-step explanation:
you have to do:
9.95 x .068
or
9.95 x 6.8 ÷ 100
and you would get 0.6766 but rounded to the nearest hundredth would be $0.68
500,-100,20,-4 write an equation for the nth term
Answer:
500(-1/5)^(n-1)
Step-by-step explanation:
Each term after the first is obtained by multiplying by -1/5.
This is a geometric series.
The nth term = a1 r^n-1)
= 500(-1/5)^(n-1)
Solve 4x - 4 = 8.
O A. x= 1
O B. x= 3
O C. x= -1
O D. x = 2
Answer:
x = 1
Step-by-step explanation:
Question: 4x - 4 = 8
•shifting the -4 to the right side:
⇒4x = 8 - 4
⇒4x = 4
•shifting the 4 to the right side:
⇒x = 4/4
•by cross cancellation we get:
⇒x = 1 Answer...
hope that helps...
I need help too find slope
Answer:
-2
Step-by-step explanation:
The slope of the function can also be described as its gradient.
To find the gradient of the function you can use:
[tex] \frac{change \: in \: y}{change \: in \: x} [/tex]
This gives us
[tex] \frac{ (- 10) - 10}{8 - ( - 2)} [/tex]
Which equals -2
What is the area of Vivian's backyard
A gardener is putting a fence around his garden. His garden is 6 feet long and 2 feet wide. How many feet of fence does he need?
Work Shown:
L = 6 = length
W = 2 = width
P = 2(L+W)
P = 2(6+2)
P = 2(8)
P = 16 feet of fencing is needed
An alternative formula is P = 2L+2W
In a survey of 1,300 women who gave birth in Maine in 2003, a total of 588 reported taking a multivitamin at least 4 times a week during the month before pregnant. Please calculate the prevalence of frequent multivitamin use, i.e., taking a multivitamin at least 4 times a week, among these women
Using it's concept, it is found that the prevalence of frequent multivitamin use is of 0.4523 = 45.23%.
What is the prevalence of a sample?The prevalence of a sample is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, 588 out of 1300 women reported taking a multivitamin at least 4 times a week during the month before pregnant, hence the prevalence is given by:
p = 588/1300 = 0.4523 = 45.23%.
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Which answer includes a function, its inverse, and a dashed line that verifies the relationship?
Answer:
A
Step-by-step explanation:
because that's the answer
The correct graph that includes a function, its inverse, and a dashed line that verifies the relationship is shown in option 1.
Used the concept of function that states,
A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable and another variable.
Ask about the function, its inverse, and a dashed line that verifies the relationship.
Now from the first graph;
The dashed line is y = x.
And the graph shows the functions and their inverse as both graphs are opposite to each other.
Therefore, option 1 is true.
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Which of these shows equivalent fractions
1/4=4/8
1/2=2/4
3/5=5/10
2/3=3/6
Answer:
1/2=2/4
Step-by-step explanation:
1/4=4/8 - no, if you multiply 1/4 x 4 to get numerator match = 4/32
1/2=2/4 - YES , 1/2 x 2 = 2/4
3/5=5/10 = no if you multiply 3/5 x 2 to get denominator match = 6/10
2/3=3/6 = no if you multiply 2/3 x 2 to get denominator match = 4/6
This Venn diagram shows the pizza topping preferences for 9 students. LIKES LIKES PEPPERONI OLIVES Joe Kalie Petal Noah Owen Let event A = Student likes pepperoni. Let event B = Student likes olives. What elements are in A and B? OA. (Maria, Zack, Bo} B. (Petal, Owen, Julia) C. (Joe, Kalie, Noah, Maria, Zack, Bo, Julia} OD. (Petal, Owen) Maria... Zack Bo Julia
The elements that are in A and B in the Venn diagram that represents the pizza topping preferences are (Maria, Zack, Bo).
What elements are in A and B?
A venn diagram represents information in a set using circles. The intersection of both circles represents those that like both pepperoni and olives. This is element A and B.
The names at the intersection of both circles are (Maria, Zack, Bo).
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sketch the region enclosed by y=6x and y=8x^2. find the area of the region.
Answer:
The area enclosed by the given curves is square units.
Step-by-step explanation:
The given equations are
Draw the graph of the given equations.
From the below graph it is clear that both curves intersect each other at (2,12) and (4,24).
The area of the region enclosed by curves is
Therefore the area enclosed by the given curves is square units.
a) Write an equation in terms of x that represents the problem. (b) Solve the problem.
Seven less than the quotient of a number and 2 is equal to − 12. Find the number.
Part 1 of 2
The equation that represents the problem is _____?
The number is______?
Answer:
Part 1: (n÷2)-7 = -12
Part 2: n = -10
Step-by-step explanation:
Part 1:
Let's first write "the quotient of a number and 2" using numbers and variables. Let "n" represent "a number". The key word that we see here is quotient, meaning we have to divide something by something else. "The quotient of a number and 2 means that "a number" is the dividend (number that is divided) and "2" is the divisor (number that divides the dividend). Therefore we obtain:
n÷2
The first part says "seven less than the quotient of a number and 2". The keyword here is less, meaning we have to use subtraction. Therefore:
(n÷2)-7
The last part says "is equal to -12". Therefore the whole expression we just wrote is equivalent to -12:
(n÷2)-7 = -12
Part 2
Remember the Order of Operations:
Parentheses
Exponents
M/D: Multiplication/Division (whichever comes first in the equation)
A/S: Addition/Subtraction (whichever comes first in the equation)
Start by adding 7 to both sides
(n÷2) = -5
Then, multiply both sides by 2
[tex]\frac{n}{2}=-5\\n=-10[/tex]
Note: I used a fraction to display the division because it is easier to see why we have to multiply both sides by 2; to cancel out the denominator.
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER
Answer:
Step-by-step explanation:
The area of rectangle is ( 30x²y + 20xy ) cm² and its breadth is 10xy cm .Find its length.
Subtract the quotient when 20x⁴y² is divided by 5x³y from the product of 2x and 3y.
Step-by-step explanation:
1) The area of rectangle is ( 30x²y + 20xy ) cm² and its breadth is 10xy cm .Find its length....
= Solution ,
Length ( L ) = ?
breadth ( b ) = 10xy cm
area ( a ) = ( 30x² + 20xy )
Now ,
area ( a ) = l × b
or, ( 30x²y + 20xy ) = L × 10xy cm
[tex]or,\frac{30 {xy + 20xy}^{2} }{10xy} = l \\ [/tex]
[tex]or, \: l = 3 {x}^{2 - 1} + 2cm[/tex]
[tex]\boxed{\sf{l = (3x+2)cm}}[/tex]
2) Subtract the quotient when 20x⁴y² is divided by 5x³y from the product of 2x and 3y.
= Solution,
[tex] = \frac{20 {x}^{4} {y}^{2} }{5 {x}^{3} y} \\ [/tex]
[tex] = 4xy[/tex]
The product of 3x and 4y = 6xy
= 6x - 4xy
[tex] = \boxed{\sf {2xy}}[/tex]
hope it helped !!!!
I don't understand this question at all please help if you do
Answer:
Answer is [tex]\frac{4}{3}[/tex]
Step-by-step explanation:
To find the interval of x. Use our equations to equal each other.
[tex]-x^2+2x=y,y=0[/tex]
[tex]-x^2+2x=0\\-x(x-2)=0\\-x=0 , (x-2)=0\\x=0 ,2[/tex]
[tex]\int\limits^2_0 {-x^2+2x} \, dx[/tex]
Integrate.
[tex]\frac{-x^3}{3}+x^2\\(\frac{-2^3}{3}+2^2)-[\frac{-0^3}{3}+0^2]\\-\frac{8}{3} +4-0\\-\frac{8}{3}+\frac{12}{3} =4/3[/tex]
Using Desmos I have Graphs of both of the equations you have provided. The problem asks us to find the shaded region between those curves/equations.
Proof Check your interval of x.
Solve for c I need answers bad please
Answer:
c = sqroot45
Put a 45 in the box under the square root.
Step-by-step explanation:
Use Pythagorean Theorem. See image.
Also, sqroot45 can be simplified. It 3root5, just in case they ask that next.
Answer:
c=√45
Step-by-step explanation:
I'm assuming this question is before Pythagorean theorem so.
Find the total area of the big square.Find the total area of the four right-angled triangles.Subtract the big square with the four right-angled triangles to find the area of the smaller square with sides 'c'.Lastly, square root (√) the value to find c. Because c²=area of smaller square.Big square area:
[tex](3 + 6) \times (3 + 6) = 81[/tex]
All four right-angled triangles area:
[tex]4( \frac{1}{2} \times 3 \times 6) = 36[/tex]
Smaller square area:
[tex]81 - 36 = 45[/tex]
Value of c:
[tex] {c}^{2} = 45 \\ c = \sqrt{45} [/tex]
Ignore the other questions I just need help with numbers 18 and 25 how do you work it out please help me out I would of have helped you
Answer:
25. -7/5 [tex]\leq[/tex] x [tex]\leq[/tex] 1
Step-by-step explanation:
18:
[tex]5-|x|\leq 2\\-|x| \leq -3\\|x|\leq 3\\x\geq -3[/tex]or [tex]x\leq 3[/tex]
25:
[tex]3|5x+1|-6\geq 12\\3|5x+1|\geq 18\\|5x+1|\geq 6\\x\leq -7/5[/tex]or [tex]x\geq 1[/tex]
[tex]-7/5\leq x\leq 1[/tex]
I don't think I explained this well let me know if you need more explanation.
On a spinner, there are twenty equal-size sections numbered from 1 to 20. Which spinner game is fair? Show your work.
The spinner game is an illustration of probability, and the spinner game that is fair is (b) If you spin a number greater than 10, you win.
How to determine the fair game?The number of sections in the spinner is given as:
n = 20
There are 10 numbers greater than 10 i.e. 11 to 2.
So, the probability that a number greater than 10 is spun is:
P = 10/20
P = 0.5
The probability that a number that is not greater than 10 is spun is calculated using the following complement rule
q = 1 - p
This gives
q = 1 - 0.5
Evaluate
q = 0.5
Notice that both probabilities are the equal
Hence, the spinner game that is fair is (b) If you spin a number greater than 10, you win.
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Identify the center and radius of each equation. (x - 1)² + y² +81
2. Solve - 2k + 12 < 30 for k.
Oke-3
Ok<3
Ok>.9
Ok>9
Answer:
2,012 is greater than 30
Step-by-step explanation:
The correct solution for the inequality is k > -9.
Given is an inequality -2k + 12 < 30, we need to solve for k,
To solve the inequality -2k + 12 < 30 for k, follow these steps:
Subtract 12 from both sides of the inequality to isolate the term with 'k':
-2k + 12 - 12 < 30 - 12
-2k < 18
Divide both sides by -2, but remember that when you divide an inequality by a negative number, the direction of the inequality sign flips:
(-2k)/(-2) > 18/(-2)
k > -9
So, the correct solution for the inequality is k > -9.
Among the options you provided, the correct answer is: k > -9.
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Jesse is making a sundae where she gets to choose one ice cream, one fruit topping, and one sauce. She can choose from chocolate, vanilla, and strawberry ice cream. She can choose from cherries or crushed pineapple as a fruit topping. Fudge and caramel are the sauces. How many outcomes?
Answer:
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a playground is 58 M wide and 91 what is the perimeter
Step-by-step explanation:
To get the perimeter, add up all of the sides.
So, the playground is a rectangle.
It has two sides measuring 58m, and two measuring 91m.
58+58+91+91=298
For the area, length x width
58x90=5278
Fraction of
[tex] \frac{200}{350} [/tex]
please give ans
4/7
Step-by-step explanation:
[tex] \hookrightarrow \sf \frac{200}{350} [/tex]
[tex]\hookrightarrow \sf \: \frac{ \sout{200}}{ \sout{350}} = \frac{\sout{100}}{\sout{175}} = \frac{4}{7} [/tex]
Therefore, [tex] \rm \frac{200}{350} [/tex] = [tex] \sf \frac{4}{7} [/tex]
Please help!!! I will give Brainliest!!!! :_D
Write an equation for each situation!
Just remember that 100% = 1.00 !
y = .78x
y = 108.5x
y = .946x
What is the measure of each angle in Megan’s triangle?
m∠A =
°
m∠B =
°
m∠C =
°
Answer:
A, C and D are true statements.
Step-by-step explanation:
Megan constructed triangle ABC.
In Megan’s triangle, m∠A is represented by x°.
Therefore, ∠A = x°
For m∠B is 4 times greater than m∠A
Therefore, ∠B = 4x°
For m∠C is 30° less than 5 times m∠A.
Therefore, ∠C = 5x°-30°
ABC is a triangle.
Sum of all angles of a triangle is 180°. Angle sum property of triangle.
m∠A + m∠B + m∠C = 180°
x° + 4x° + 5x°-30° = 180°
x° = 15°
True Statements are:
A) m∠A = x°
C) m∠B = (4x)°
D) m∠C = (5x – 30)°
Glaucoma is a disease of the eye that is manifested by high intraocular pressure. The
distribution of intraocular pressure in the general population is approximately normal with
mean 16 mm Hg and standard deviation 3.2 mm Hg. If the normal range for intraocular
pressure is between 10 and 22 mm Hg, than what proportion of the general population would
fall within this range?
A z-table is also known as the standard normal distribution table. The percentage of the population that would fall in the 10 to 22 mm Hg range is 0.9386.
What is a Z-table?A z-table also known as the standard normal distribution table, helps us to know the percentage of values that are below (or to the left of the Distribution) a z-score in the standard normal distribution.
Given the mean and the standard deviation are 16mmHg and 3.2 mmHg, therefore, the percentage of the population whose blood pressure will fall in the range of 10 to 22 mm Hg are,
[tex]P(10 < x < 22) = P(\dfrac{10-16}{3.2} < Z < \dfrac{22-16}{3.2})[/tex]
[tex]= P(-1.875 < Z < 1.875)\\\\=P(Z < 1.875)-P(Z < -1.875)\\\\= 0.9693-0.0307\\\\= 0.9386[/tex]
Hence, the percentage of the population that would fall in the 10 to 22 mm Hg range is 0.9386.
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