mary practiced piano for two or more hours each week write and solve an inequality to represent how many hours mary practiced the piano in 4 weeks
Answer:
Therefore the inequality that represents her practice in four weeks is: [tex]\text{four week practice} \geq 8[/tex]
Step-by-step explanation:
Mary practiced the piano for two or more each week, in other words the number of hours practiced in a week must be equal or greater than 2. A math expression that can represent this situation can be seen below:
[tex]\text{week practice} \geq 2[/tex]
The problem wants us to write an inequality to state how many hours she practiced in four weeks. In order to do this, we need to multiply the number of hours she practiced in a week, given by the last expression, by four. We have:
[tex]\text{four week practice} \geq 4*2\\\text{four week practice} \geq 8[/tex]
Therefore the inequality that represents her practice in four weeks is: [tex]\text{four week practice} \geq 8[/tex]
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Answer: $14.88x + $8.88y
Step-by-step explanation:
x represents adult ticket
y represents child ticket
Value of adult tickets = 14.88 * x
Value of child tickets = 8.88 * y
So the equation is
14.88x + 8.88y
Answer:
Hi
Step-by-step explanation:
According to my calculations, the answer is C.
HOPE THIS HELPS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
2(4x+3)=10x-2
So like how in hell do you do this I’m soooo confused
Answer:
4Solution,
2(4x+3)=10x-2
or,8x+6=10x-2
or,8x-10x=-2-6
or,-2x=-8
or,X=-8/-2
X=4
Hope it helps
Good luck on your assignment
Answer:
x = 4
Step-by-step explanation:
First you want to distribute the terms:
2(4x+3) = 10x-2
8x+6 = 10x-2
then combine like terms:
8x+6 = 10x-2
-8x -8x
6 = 2x-2
+2 +2
8 = 2x
x = 4
What is the slope of the line y=3?
Answer:
The slope is zero.
Step-by-step explanation:
Imagine the graph. [tex]y=3[/tex] would simply be a horizontal line. All horizontal lines have slopes of 0. You can also use the slope formula if necessary to try it out.
On the other hand, if the line was vertical (e.g. [tex]x=3[/tex]), then the slope would be undefined.
Answer: The line y=3 is a horizontal line, and a horizontal line has a slope of zero. The only lines parallel to a horizontal line are other horizontal lines. Therefore, there is no slope.
Step-by-step explanation: y=3 rewritten as y=0x+3
For a line equation for the form of y=mx+b, the slope is m
m=0
Given A(1, 7), B(8, 4) , and C(3, 10) ), which coordinate pair will make AB parallel to CD?
Answer:
I'm 50% sure it is B)8,4
We want to find the coordinates of a point D such that AB is parallel to CD.
The coordinates of D are: D (10, 7).
We have that:
A(1, 7)B(8, 4)C(3, 10)D(x, y).If we want CD to be parallel to AB, then the change in the components between D and C must be the same as the change in the components between B and A.
The change in the x-component between B and A is:
8 - 1 = 7
The change in the y-component between B and A is:
4 - 7 = -3
Then the coordinates of D are given by:
x = 3 + 7 = 10
y = 10 + (-3) = 7
The coordinates of D such that CD is parallel to AB are:
D(10, 7).
Notice that this is just an option, there are a lot of other possible coordinates that will also make CD parallel to AB, this is just the easier one to find.
If you want to learn more, you can read:
https://brainly.com/question/12858856
Look at the right-angled triangle ABC.
A
320
B
С
The square fits exactly inside the triangle.
Work out the sizes of angles x, y and z.
Answer:
∠x = 90°
∠y = 58°
∠z = 32°
Step-by-step explanation:
The dimensions of the angles given are;
∠B = 32°
Whereby ΔABC is a right-angled triangle, and the square fits at angle A, we have;
∠A = 90°
∴ ∠B + ∠C = 90° which gives
32° + ∠C = 90°
∠C = 58°
∠x + Interior angle of the square = 180° (Sum of angles on a straight line)
∴ ∠x + 90° = 180°
Hence;
∠x = 90°
∠x + ∠y + 32° = 180° (Sum of angles in a triangle)
∴ 90° + ∠y + 32° = 180°
∠y = 180 - 90° - 32° = 58°
∠y + ∠z + Interior angle of the square = 180° (Sum of angles on a straight line)
58° + ∠z +90° = 180°
∴ ∠z = 32°
∠x = 90°
∠y = 58°
∠z = 32°
Consider the function represented by the table.
The ordered pair given in the bottom row can be written
using function notation as
2
7
9
f(x)
6
3
5
f19)=5.
Of(5)=9.
O f5.9)=14
119.5)=14.
Market
Andreu
Save and Edit
com/content. Amen
Answer:
A
f(9) = 5
Step-by-step explanation:
Ex:
If we have an x value of 9, it would look like
f (9) = 9 + y-intercept
So in this situation we have a x-value of 9.
We know that at 9, y = 5.
So f (9) = 5.
Answer:
The answer is A
Step-by-step explanation:
Just took the test on Edge
I have never been marked Brainiest before if you would PLEASE pick mine.
All Food City oranges are normally $3 per pound, but this week they are on sale for $2 per
pound. What is the percent decrease in price?
Answer:
33.33%
Step-by-step explanation:
The oranges have decreased by one dollar per pound so you have to find the percentage of 3 that is 1. To do this is 1 over 3 multiplied by 100%
= [tex]\frac{1}{3} \\[/tex] * 100%
And this will give you 33.33%
Maria rewrites a fraction less than 1 as a decimal. The numerator is a whole number greater than 0. Which denominator will the fraction always convert to a repeating decimal?
Answer:
The answer is 11
Step-by-step explanation:
Since 11 is a prime number, it cannot be divided by anything, so when it is divided by something, it will always result in a repeating decimal.
Answer:
11
Step-by-step explanation:
Which of the following inequalities are correct?
A - 2/3 < - 1/3
B. 0 > - 2/3
C. - 1/3 < -2/3
[tex]\text{In order for an inequality to be correct, the inequality has to be TRUE}\\\\\text{When we look at answer choice A, we see that -2/3 is less than -1/3}\\\text{This is true because -1/3 is closer to 0 on the number line, making it bigger}\\\text{than -2/3}\\\\\text{When we look at answer choice B, 0 is greater than -2/3. This is true}\\\text{because 0 is bigger than -2/3, since -2/3 is on the negative side}\\\\\text{When you look at answer choice C, -1/3 is less than -2/3. This is not}\\[/tex]
[tex]\text{true because -2/3 is not bigger than -1/3, since -1/3 is closer to 0.}\\\\\text{Therefore, answer choices A and B should be correct}[/tex]
what are the coordinates of D’
Answer:
(-2,-1)
Step-by-step explanation:
Reflection across the x-axis is: [tex](x,y)\rightarrow(x,-y)[/tex]
We need to multiply the y-value of the pre-image by negative one to get reflected across the x-axis.
1 * -1 = -1
So:
[tex](-2,1)\rightarrow(-2,-1)[/tex]
D' should be (-2,-1).
Is triangle LWO congruent to triangle BST?
Answer:last one
Step-by-step explanation:
last one
Answer:
lasat oine
Step-by-step explanation:
How much money should you save each month?
A. Always save 5% of your income
B. You must decide what you can afford
C. Save $50 from every paycheck
D. Only save your spare change
Answer:
I prefer 5% of your income should be saved each month
Answer:
b. you must decide what you can afford
Step-by-step explanation:
i just took the quiz and that's the correct answer
At Daisy Donuts, 5 of the last 20 donuts sold had sprinkles. What is the experimental probability that the next donut sold will have sprinkles? Write your answer as a fraction or whole number. P(sprinkles) =
Answer:
1/4
Step-by-step explanation:
5/20 donus had sprinkles
So the probability will be 5/20 = 1/4
What is the answer for 2(x+1)-(x+1) ^2?
Answer:
Step-by-step explanation:
Answer: x+3^2
Step-by-step explanation:
2(x+1)-(x+1) ^2
2x-x+-x^2+1
x+-x^2+1
-x^2+1
Hope this helps
A set of line segments has the lengths, 4,10, and 12. Would the segments form a triangle?
Answer:
Yes, the segments would form a triangle.
Step-by-step explanation
If the two shortest lengths are equal to or greater than the longest, it can form a triangle.
Answer:
yes
Step-by-step explanation:
Add any two sides and see if it is greater than the third for all three sides
4+10 > 12 true
10+12 > 4 true
12+4 > 10 true
Then the three sides form a triangle
state if the triangles in each pair are similar. If so, State how you know they are similar and complete the similarity statement. Part 4
a. similar, SSS similarity
b. similar, SAS similarity triangle LSR
c. not similar
Answer: a) similar, SSS similarity
Step-by-step explanation:
ΔLSR sides in order from least to greatest are: 24, 33, 36
ΔLNM sides in order from least to greatest are: 112, 154, 168
If the triangles are similar then their corresponding sides will be proportional
[tex]\dfrac{LS}{LN}=\dfrac{SR}{NM}=\dfrac{LR}{LM}\\\\\\\\\\\dfrac{LS}{LN}=\dfrac{24}{112}\quad \rightarrow \dfrac{3}{14}\\\\\\\dfrac{SR}{NM}=\dfrac{33}{154}\quad \rightarrow \dfrac{3}{14}\\\\\\\dfrac{LR}{LM}=\dfrac{36}{168}\quad \rightarrow \dfrac{3}{14}[/tex]
Their corresponding sides are proportional so
ΔLSR ≅ ΔLNM by Side-Side-Side Similarity Theorem
Look at the polyhedron that you chose at the beginning. Which two solids do you need to create your polyhedron? How many of each solid do you need?
Answer:
2 Tetrahedrons combined create an Octahedron.
Step-by-step explanation:
Despite the lack of information.
The Plato Polyhedrons are Tetahedron, Cube (Hexaedron), Dodecahedron, Octahedron and Icosahedron. They are regular ones, made up by regular plane figures.
An Octahedron can be built by combining two pyramids. Each Tetrahedron is made up by 4 equilateral triangle.
Consider the incomplete paragraph proof. Given: Isosceles right triangle XYZ (45°–45°–90° triangle) Prove: In a 45°–45°–90° triangle, the hypotenuse is StartRoot 2 EndRoottimes the length of each leg. Triangle X Y Z is shown. Angle X Y Z is 90 degrees and the other 2 angles are 45 degrees. The length of X Y is a, the length of Y Z is a, and the length of X Z is c. Because triangle XYZ is a right triangle, the side lengths must satisfy the Pythagorean theorem, a2 + b2 = c2, which in this isosceles triangle becomes a2 + a2 = c2. By combining like terms, 2a2 = c2. Which final step will prove that the length of the hypotenuse, c, is StartRoot 2 EndRoot times the length of each leg? Substitute values for a and c into the original Pythagorean theorem equation. Divide both sides of the equation by two, then determine the principal square root of both sides of the equation. Determine the principal square root of both sides of the equation. Divide both sides of the equation by 2.
Answer:
(C)Determine the principal square root of both sides of the equation.
Step-by-step explanation:
Given: Isosceles right triangle XYZ (45°–45°–90° triangle)
To Prove: In a 45°–45°–90° triangle, the hypotenuse is [tex]\sqrt{2}[/tex] times the length of each leg.
Proof:
[tex]\angle XYZ$ is 90^\circ$ and the other 2 angles are 45^\circ. \\\overline{XY} = a, \overline{YZ}= a, \overline{XZ}= c.\\[/tex]
Because triangle XYZ is a right triangle, the side lengths must satisfy the Pythagorean theorem, [tex]a^2 + b^2 = c^2[/tex]
Since a=b in an isosceles triangle:
[tex]a^2 + a^2 = c^2\\$Combining like terms\\2a^2 = c^2\\$Determine the principal square root of both sides of the equation.\\\sqrt{c^2}=\sqrt{2a^2} \\\\c=a\sqrt{2} \\[/tex]
Therefore, the next step is to Determine the principal square root of both sides of the equation.
Answer: C and hoped this helped and please mark as brainlest.
What is the area of the parallelogram. A. 131.1 m² B. 197.34 m² C. 262.2 m² D. 394.68 m²
Answer:
D) 394.68cm^2
Step-by-step explanation:
Area of a parallelogram is calculated by multiplying height to the base
13.8 × 28.6 = 394.68
Answer:
area of parallelogram= length of base × perpendicular height
28.6×13.8
= 394.68m²
Solve for f.
6(10 + 14f) = 4(–12 + 12f)
f =
Answer:
f = -3
Step-by-step explanation:
→Distribute the 6 to (10 + 14f), and the 4 to (-12 + 12f):
6(10 + 14f) = 4(-12 + 12f)
60 + 84f = -48 + 48f
→Subtract 48f from both sides:
60 + 36f = -48
→Subtract 60 from both sides:
36f = -108
→Divide both sides by 36:
f = -3
Answer:
-3
Step-by-step explanation:
6(10 + 14f) = 4(–12 + 12f)
Expand out
60 + 84f = -48 + 48f
Subtract -48 to both sides to bring the numerical to one side
108 + 84f = 48f
Minus 84f from both sides to isolate 12
108 = -36f
Divide both sides by -36 to isolate f
-3 = f
Johnny earns $5 per day delivering newspapers. What equation shows how much money m he earns delivering papers for d days
Answer:
Step-by-step explanation: so, he earns 5 dollars every day, and he starts off with 0 with the y=mx+b form you would y or m in this case is equal to 5x or is this case d so ot would be m=5d
Answer:m=5d
Step-by-step explanation:
Find the value of x.
please i need the answer today.
Thank you.
Answer:
x = 61.92751306
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
tan theta = opposite / adjacent
tan x = 15/8
Take the inverse tan on each side
tan ^ -1 (tan x) = tan ^ -1 (15/8)
x = 61.92751306
Answer:
Step-by-step explanation:
tan x = 15/8
tanx = 15/8 ... 1
cot x = 8/15..... 2
multiply 1 and 2
tanx * cotx = 15/8 * 8/15
x [ tan * 1/tan] = 1
x = 1
hope it is correct. i just tried
A cake is made out of 2 identical trapezoids. Each trapezoid has a height of 11 inches and base of 9 inches and 14 inches . What is the area of one of the trapezoid pieces
Answer:
Area is 126.5 inches^2
Step-by-step explanation:
Mathematically, to calculate the area of the trapezoid, we use the following mathematical formula;
A = 1/2(a + b) h
here, a and b represents the two parallel sides which is 9 and 14 inches here and h which is the height is 11
Plugging these values into the equation, we have
A = 1/2(9 + 14)11
= 1/2(23)11 = (23*11)/2 = 126.5 inches^2
Which shows a perfect square trinomial please help soon
Answer: The answer is C, the third one.
Step-by-step explanation: Copy and paste the whole page into google. The top brainly result will appear and give the answer.
In quadrilateral QRST, m is 68°, m is (3x + 40)°, and m is (5x − 52)°. What are the measures of , , and ? Write the numerical values in that order with the measures separated by commas.
Answer:112,112,68
Step-by-step explanation:
You have the answer in the picture. You only need S and is 180-Q =180-68= 112, so the answer is 112,112,68
Answer:
112, 112, 68
Step-by-step explanation:
3) What is the volume of a ball with a
diameter of 6 centimeters? Use 3.14
PLEASE SEE PIC BELOW
Answer: third one
Step-by-step explanation: if you do the equation you will see the result and will be equivalents to numbers higher or exact to 0.
Find the indicated side of the right triangle. Please help
Answer:
14
Step-by-step explanation:
[tex] \sin \: 30 \degree = \frac{7}{x} \\ \\ \frac{1}{2} = \frac{7}{x} \\ \\ x = 2 \times 7 \\ \\ x = 14[/tex]
WRITE AN EQUATION
you bought a magazine for $5 and four erasers. you spent a total of $25. write a tip step equation to find the cost of the erasers.
5+x=25. 5+4x=25. 5x=25. 25 - 5 =-4x
Answer:
5+4x=25
Step-by-step explanation:
Answer:
5+4x=25
Step-by-step explanation: