Sarah wants to hang a mirror in her room. The mirror and frame must have an area of 15 square feet. The mirror is 3 feet wide and 4 feet long. Which quadratic equation can be used to determine the thickness of the frame, x? Square with an inner frame with height of 3ft on the left frame and width of 4ft on the top. Arrow on the bottom frame with an x and an arrow on the right frame with an x. 3x2 + 14x − 2 = 0 4x2 + 14x − 3 = 0 x2 + 12x − 14 = 0 2x2 + 7x − 14 = 0

Answers

Answer 1
Length of the outer frame:4+2x
Width of the outer frame:3+2x
Area of the outer out frame"(4+2x)(3+2x)=15
Expand the equation:12+8x+6x+12x^2=15
Combine like terms :4x^2+14x-3=0

Related Questions

BRAINLIEST to the correct answer Which measure(s) of center best derceibe(s) the data Explain. {10,10,10,10,1010,10,60} Mean Median or Mode

Answers

Mode.

The number that appears the most is 10, so it's mode.

This is mode because the number that appears more than any other number is 10.

Jose worked n hours at 8.75 per hour.he made a total of 61.25. Write an expression that represents the total number of hours hose work

Answers

$8.75n = $61.25
The hourly rate is multiplied by the number of hours worked is used to find the total earning, in this case in $61.25.

Please I need help with this question

Answers

Aby ended up at the school. Nice hands btw xD

Which of the following is not a perfect square?
A) 49
B) 121
C) 75
D) 64

Answers

75 is not a perfect square because if you take the square root of 75, it will come out 5 sq 3.

Therefore, the correct answer is C.

3(x - 9) = -39
solve and check solution

Answers

3(x-9)=-39

3x-27=-39
    +27  +27
3x=-12
/3   /3

x=-4
The answer is x= -4

3(x-9)= -39
divide both sides by 3 
x-9= -13
add 9 to both sides
x= -4

3(-4-9)= -39
-12-27= -39

paula earned a 56% on her science test if she got 14 problems correct then how many questions were on the test

Answers

56% = 14 questions

1% = 14 ÷ 56 = 0.25 questions

100% = 0.25 x 100 = 25 questions

Answer: 25 questions.
To find the original amount, you do the amount she got correct divided by (1 minus the percentage). 

Let P = amount of problems on the test. 

P = 14 / (1 - 0.56) 
= 14/ 0.44
≈ 31.818 repeating. 

You can have part of a question (in this math, that is. Partial credit IRL exists) so we round to the nearest whole question, 32. 

The test had 32 questions. 

There are only blue sweets,green sweets and red sweets in a box. The ratio of the number of blue sweets to the number of green sweets is 2:7. The ratio of the number of green sweets to the number of red sweets is 3:1. There are less than 140 sweets in the box. What is the greatest possible number of red sweets in the box?

Answers

Answer:

The greatest possible number of red sweets is 28.

Explanation:

Let g represent the number of green sweets.  We know that the ratio of blue to green is 2:7; this means the number of blue sweets is 2/7 the number of green sweets, or 2/7g.

We also know that the number of green sweets to the number of red sweets is 3:1; this means the number of red sweets to the number of green sweets is 1:3, or that the number of red sweets is 1/3 the number of green sweets:

1/3g

We know that there are fewer than 140 total sweets; this gives us the inequality

g + 2/7g + 1/3g < 140

We must find a common denominator; 21 will work:

21/21g + 6/21g + 7/21g < 140

34/21g < 140

Divide both sides by 34/21:

(34/21g)÷(34/21) < 140÷(34/21)

g < 140÷(34/21)

To divide fractions, flip the second one and multiply:

g < 140×(21/34)

g < 2940/34

This means the number of red sweets will be 1/3 of this:

r < 2940/34 × 1/3

r < 2940/102

102 will go into 2940 28 times, so 28 is the largest number of red sweets.

     Greatest possible number of red sweets in the box will be 28.

 It's given in the question,

Ratio of the number of blue (b) and green sweets (g) = 2 : 7

        [tex]\frac{b}{g}=\frac{2}{7}[/tex] ⇒ [tex]b=\frac{2}{7}g[/tex] ------(1)

Ratio of the number of green (g) and red sweets (r) = 3 : 1

        [tex]\frac{g}{r}=\frac{3}{1}[/tex] ⇒ [tex]r=\frac{1}{3}g[/tex] -------(2)

Since, total number of blue, green and red sweets in the box are less than 140,

[tex]b+g+r< 140[/tex]

Substitute the values of 'b' and 'r' from equations (1) and (2),

[tex]\frac{2}{7}g+g+\frac{1}{3}g< 140[/tex]

[tex]\frac{6g+21g+7g}{21}< 140[/tex]

[tex]\frac{34}{21}g< 140[/tex]

[tex]g< \frac{140\times 21}{34}[/tex]

Since, [tex]g=3r[/tex],

[tex]3r< \frac{140\times 21}{34}[/tex]

[tex]r< \frac{140\times 21}{34\times 3}[/tex]

[tex]r<28.82[/tex]

   Therefore, greatest possible number of red sweets will be 28.

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Locate the prepositional phrase and type it in the blank. Then, identify the function of the phrase. Above the door hung a horseshoe. prepositional phrase: function of phrase: (Type adjective or adverb ).

Answers

The function of this prepositional phrase is adverbial, specifically it acts as an adverbial phrase of place, modifying the verb "hung". It answers the question "where?" in relation to the action of hanging.

The prepositional phrase in the sentence "Above the door hung a horseshoe" is "above the door".

This phrase describes the location of the horseshoe relative to the door. It specifies that the horseshoe is positioned vertically higher than the door. Prepositional phrases function as adjectives or adverbs by providing additional information about nouns (in this case, "door") or verbs (in this case, "hung"). In this context, "above the door" modifies the action of "hung" by indicating where the horseshoe is located.

Complete answer

Locate the prepositional phrase and type it in the blank. Then, identify the function of the phrase. Above the door hung a horseshoe. prepositional phrase: function of phrase: (Type adjective or adverb ):

can someone help me

Answers

y=x+25 has the biggest increase so i think its B

what are the solutions to the equation
[tex] {x}^{2} = 625[/tex]

Answers

Answer:  " x = 25 " ;  "x = -25 ;  
______________________________________________________
or; write as:  " x = ± 25 " . 
______________________________________________________

what is the surface area of a square pyramid if the base has an area of 16cm2 and lateral faces have a slant height of 12cm?

Answers

The surface area of this square pyramid is 112 cm^2!
Hope this helps <3

Answer:

Surface area of a square pyramid is:

112 cm²

Step-by-step explanation:

The surface area of square pyramid is given by:

S=2bs+b²

Where b is the length of base and s is the slant height.

and Area of base=b²

Here, s=12 cm

and Area of base=b²=16 cm²

⇒ b=4 cm

Hence, Surface Area=2×12×4+4×4

                                 = 112 cm²

Hence, surface area of a square pyramid is:

112 cm²

in the diagram below bc is an altitude of abd.to the nearest whole unit.what is the length of cd

Answers

Pythagorean theorem:
                       AB = √30^2 + 16^2 = 34

These are similar triangles.

∠BAC is congruent to ∠BAD
∠ACB is congruent with ∠ABD (both right angles)

Using ratios:
               AC / AB = AB / (AC + CD)
             AC + CD =  AB² / AC
                       CD = AB² / AC - AC
                       CD = 34² / 16 - 16               
                       CD = 56.25
The answer to this question is 56.

The trigonometric function gives the ratio of different sides of a right-angle triangle.The correct option is C.

What is Trigonometric functions?

The trigonometric function gives the ratio of different sides of a right-angle triangle.

[tex]\rm Sin \theta=\dfrac{Perpendicular}{Hypotenuse}\\\\\\Cos \theta=\dfrac{Base}{Hypotenuse}\\\\\\Tan \theta=\dfrac{Perpendicular}{Base}\\\\\\[/tex]

where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite to the 90° angle.

Let the length of the line segement CD be represented by x.

In ΔABC, Using the pythgorus theorem, we can write,

AB² = BC² + AC²

AB² = 30² + 16²

AB = 34 units

In ΔABC, the measure of ∠A be written as,

tan(∠A) = BC/AC

tan(∠A) = 30/16

∠A = tan⁻¹ (30/16)

∠A = 61.9275°

Now, in ΔABD, the measure of ∠A can be written as,

Cos(∠A) = AB/AD

Cos(61.9275°) = 34/(AC+CD)

0.47 = 34/(16+CD)

16 + CD = 72.25

CD = 56.25 ≈ 56

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solve the system of equations by substitution ×+y=44 y=10x

Answers

x + y = 44
y = 10x

To solve this system by substitution, substitute 10x for y into the top equation.

        x + y = 44
    x + 10x = 44
          11x = 44
              x = 4

To find y, substitute 4 for x into either of the original equations; I'll use the bottom equation.

    y = 10x
    y = 10(4)
    y = 40

Lastly, substitute the x- and y-values into both original equations to check work.

      x + y = 44
    4 + 40 = 44
          44 = 44

            y = 10x
          40 = 10(4)
          40 = 40

Answer:
x = 4; y = 40

(4, 40)
Final answer:

We can solve the system of equations x + y = 44 and y = 10x by substitution. When we substitute y = 10x into the first equation, we find that x = 4. Substituting x = 4 into the equation y = 10x gives y = 40.

Explanation:

To solve the system of equations by substitution, we first identify the two equations given: x + y = 44 and y = 10x. We can use the second equation as our substitution into the first equation. This gives us x + 10x = 44, which simplifies to 11x = 44. Solving for x, we divide both sides by 11 to get x = 4.

Next, we substitute x = 4 into the second initial equation, y = 10x, which gives us y = 10*4 = 40.

So, the solution to this system of equations is x = 4 and y = 40.

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Find the measure of JEF
A)16
B)74
C)82
D)164

Answers

A. 16

Its because the final angle in the quadrangle is 164 degrees (you can get this by knowing all the angles add up to 360). Then note that the angles are complementary. 

Answer:

16  

Step-by-step explanation:

I just submitted it on USA Test Prep

write a translation rule that maps D(7,-3) onto point (2,5)

Answers

The answer is D(x, y) → (x-5, y+8).
If the location of point D is defined by coordinates (x, y) equal to (7, -3), and the location of point D' is defined by coordinates (x', y') equal to (2, 5), the point D translated becomes point D' means that each point (x, y) is shifted onto the point (x', y'), that is,  
     (x, y) → (x', y')
     Dtranslation = < (x' - x), (y' - y) >
                         = < 2 - 7, 5 - (-3) >
                         = < -5, 8 >
Therefore, point D moved 5 units to the left and 8 units up:
     D(x, y) → (x-5, y+8) 

Two acute angles can be which of the following?

I. congruent
II. adjacent
III. complementary
IV. supplementary

A. I and II
B. I and III
C. I, II, III
D. I, II, and IV

Answers

The answer to your question is choice C. I, II, III. Two acute angles cannot be supplementary as two upplementary angles add up to 180. The most an acute angle can be is 89 and 89 * 2 does not reach 180. Two acute angles can satisfy any of the other conditions.
It would be C.

Two angles are adjacent when they have a common side and a common vertex.
Complimentary angles- either of two angles whose sum is 90
Congruent angles have the same angle. 
Supplementary angles- either of two angles whose sum is 180

It is not supplementary because you can not add two acute angles together. To make a supplementary angle you must add an acute and obtuse or two right angles. 

An Obtuse angle is an angle with a sum more than 90.
Right angle is an angle with a sum of only 90.

Evaluate.
7 with a 3 on top

A) 21
B) 49
C) 81
D) 343

Answers

That’s 7 to the power of 3 which means 7x7x7=343. Hope this helps mark Brainest
your correct answer is D) 343.  

The word pluralistic contains the root pour which means more what does pluralistic mean?
The pluralistic culture of the United States encourages people from around the world to apply for citizenship
A) patriotic
B) diverse
C) receptive
D) unified

Answers

I tihink the answer is C

The word pluralistic means diverse.

Pluralistic:

'Anything pluralistic involves a diversity of different ideas or people. A pluralistic society is a diverse one, where the people in it believe all kinds of different things and tolerate each other’s beliefs even when they don’t match their own'

According to the given question,

'The diverse culture of the United States encourages people from around the world to apply for citizenship.'

Hence, we can conclude that that diverse is the correct meaning for pluralistic.

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COMPLETING THE SQUARE
2x^2 -4x+3=9



2. QUADRATIC FORMULA
2x^2+4x=0

Answers

x = 3 and x = -1 are the answers for both. They are exactly the same equation. 

FOR COMPLETING THE SQUARE
Make in terms of ()^2 which you can do by adding numbers to both sides. Eventually it will look like this:
(2x - 1)^2 - 7 = 0
Add to both sides, take a square root and then solve. 

USE THE QUADRATIC FORMULA
Be sure to solve for zero and be aware of negatives when plugging in. 

LMN≅PQR What is the value of x in degrees?
Enter your answer in the box. ​

x​ = °

Answers

Since angle LMN = angle PQR, angle M = angle Q

Since angle Q = 55 degrees, Angle M also = 55 degrees

We know that the three angles of a trainangle should be equal to 180 degrees

So, L + M + N = 180

Angle L is the unkown x

x + 55 + 39 = 180

x +94 =180

x = 180-94

x = 86 degrees



Seventy-six people were asked what their favorite meal of the day is. Twenty-eight said lunch was their favorite meal of the day. Thirty-three said dinner was their favorite meal of the day. Eighteen women said their favorite meal of the day was lunch. Nineteen men said their favorite meal of the day was dinner. Thirty-six of the people who were asked are women. please make a table with each paet labeled

Answers

Hi, I assume this includes breakfast so I am going to include it in the table. If there is any problem with my answer, let me know so that I can fix it for you! Hope this helps you and anyone else! :D

The table of contents for the equations is solved

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

The total number of people = 76

The number of people who opted for lunch = 28

The number of people who opted for dinner = 33

The number of males who opted for dinner = 19

The number of females who opted for lunch = 18

The total number of females = 36

Now , the table is created from the following equations

+-----------+-------+---------+-------+

|           | Males | Females | Total |

+-----------+-------+---------+-------+

| Breakfast | 11    | 4       | 15    |

+-----------+-------+---------+-------+

| Lunch     | 10    | 18      | 28    |

+-----------+-------+---------+-------+

| Dinner    | 19    | 14      | 33    |

+-----------+-------+---------+-------+

| Total     | 40    | 36      | 76    |

+-----------+-------+---------+-------+

Hence , the equations is solved

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In a scale drawing a plane has a length of 35 centimeters. The actual length of the plane is 87.5 feet. What is the scale of the drawing?

Answers

35 cm : 87.5 ft
1 cm : x
cross multiplying
35 cm X = 1 cm x 87.5 ft
x= 87.5 ft. cm /35 cm
x = 2.5 ft
therefore, the scale is 1 cm : 2.5 ft

Using proportions, it is found that the scale of the drawing is of 1 ft:0.4 cm.

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, we have that 35 cm represent 87.5 ft. How many cm represent a ft?

The rule of three is given by:

35 cm - 87 ft

x cm - 1 ft

Applying cross multiplication:

[tex]87x = 35[/tex]

[tex]x = \frac{35}{87}[/tex]

[tex]x = 0.4[/tex]

Hence, the scale of the drawing is of 1 ft:0.4 cm.

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1. Write the rule for finding a point translated vertically k units up.
2. Use this rule to find the coordinates for (−3, −6) when translated 5 units up.

Answers

For this case we can use the following translation rule:
 (x, y) -------> (x, y + k) ------> (x ', y')
 Where,
 k: number> 0
 Substituting values we have:
 (-3, -6) -------> (-3, -6 + 5) ------> (-3, -1)
 Answer:
 
the rule for finding a point translated vertically k units up is:
 
(x, y + k)
 
The new coordinates are:
 
(-3, -1)

Luis earns a base salary of $150.00 every week with an additional 14% percent commission on everything he sells. Luis sold \$6050.00 worth of items last week.What was Luis's total pay last week?

Answers

Your answer should be $997 

I hope this helped you 
Luis's total pay last week was $997.00 because if he sold $6,050.00 worth of items last week then your gonna wanna multiply 6,050 * .14 and your gonna get 847 dollars worth which is gonna add to his 150 dollars which gives you 997 dollars.

A spinner and 4 cards are shown below: A spinner with 5 equal sectors is shown in the figure. The colors Green, Blue, Purple, Yellow, and Red are marked on it. The arrow points at the purple color. Four cards are shown on the right side. The colors Red, Yellow, Blue, and Pink are marked on them. Jane spins the spinner and selects a card without looking. What is the probability that the spinner stops at purple and a pink card is selected? 1 over 20 1 over 5 1 over 4 9 over 20

Answers

[tex] |\Omega|=5\cdot4=20\\
|A|=1\\\\
P(A)=\dfrac{1}{20} [/tex]

The probability that the spinner stops at purple and a pink card is selected is 1/20

How to determine the probability?

The given parameters are:

Spinner = {Green, Blue, Purple, Yellow, Red}Cards = {Red, Yellow, Blue, Pink}

There is 1 purple color on the spinner and 1 pink card in the card.

So, the probability that the spinner stops at purple and a pink card is selected is:

P(Purple and Pink) = 1/5 * 1/4

Evaluate the product

P(Purple and Pink) = 1/20

Hence, the probability that the spinner stops at purple and a pink card is selected is 1/20

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A traveler is walking on a moving walkway in an airport The Traveler must walk back on the walkway to get a bag he forgot the Travelers ground speed is 2ft/s against the walkway and 6ft/s with the walkway what is the Travellers speed off the walkway what is the speed of the moving walkway

Answers

let the speed off the walk way be x and speed of the walkway be y
x+y=6....i
x-y=2....ii
adding the above equation we get:
2x=8
thus
x=4 ft/s
and
y=6-4=2 ft/s
thus the speed off the walk way is 4 ft/s
the speed of the moving walkway is 2 ft/s

Final answer:

The speed of the traveler off the walkway is 4ft/s, while the speed of the moving walkway is 2ft/s. This is found by simultaneously solving the equations formed by the given speeds of the traveler with and against the walkway.

Explanation:

The speed of the traveler, independent of the moving walkway, as well as the speed of the moving walkway itself can be determined using the given speeds of the traveler with the walkway and against it. When the traveler walks in the same direction as the moving walkway, their speeds add together, which is given as 6ft/s. Conversely, when the traveler walks against the movement of the walkway, their velocities subtract which is given as 2ft/s.

That is to say, if we denote the traveler's speed as *T* and the walkway's as *W*, then we have these two equations: *T* + *W* = 6, and *T* - *W* = 2. Solving these equations simultaneously, we find that *T* = 4ft/s, which is the traveler's speed off the walkway, and *W* = 2ft/s, which is the speed of the moving walkway

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Describe the domain and range for

Answers

Square root functions domain have to be set greater than or equal to zero, so we can set x+4 greater than or equal to zero.
[tex]x + 4 \geqslant 0 \\ x \geqslant - 4 \\ \\ [/tex]
[-4, + infinity)
Find the domain by finding where the function is defined. The range is the set of values that correspond with the domain
Domain: [-4,∞),{x | x ≥ -4}
Range: [0,∞),{y | y ≥ 0}


Could somebody please help me I dont understand how to do this problem

Answers

So a triangle has a total of 180 degrees
107 + 2x-5 +x = 180
solve for x
112 + 3x = 180
-112           -112
3x = 68
x = 22.6667 degrees
I think this the answer because positive 107 negative -5= 102

How do you find the diameter of 12 inches

Answers

If the radius is 12 that’s half of the diameter. If would be radius x2= diameter
12x12=144

Explain what happens at the saturation point when adding salt to water at room temperature

Answers

At room temperature, you need at least 100 grams of water to dissolve around 35 grams of salt; however, if the temperature changes, the amount of salt that water can dissolve also changes. The point where water can no longer dissolve salt is called saturation, and this happens when the salt you add only goes to the bottom of the solution. There are also several factors that facilitate salt’s solubility in water.
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What is George Orwells purpose in writing? to inform readers of political events happening in his day to inform readers of strong language used in political writing to persuade readers that vague language is often used to soften harsh reality to persuade readers that political speech should be softer and less specificits the 3rd one In Shooting an Elephant, when Orwell states that it, "would never do" to have the Burmese laugh at him, Orwell reveals his: Question 2 options: A.Frustration B.Anger C.Prejudice D.Pride Which of the following is an undefined term? Angle Circle Plane Ray In 1946 the United States backed the French in its military struggle against Vietnam true or false Which four parts of this excerpt from W. W. 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"He didn't want it, but I made him take it. And he pressed me again to throw it away."-"Likely," said Herbert, with pretended horror. "Why, we're going to be rich, and famous and happy. Wish to be an emperor, father, to begin with; then you can't be henpecked."He darted round the table, pursued by the maligned Mrs. White armed with an antimacassar.-Mr. White took the paw from his pocket and eyed it dubiously. "I don't know what to wish for, and that's a fact," he said, slowly. "It seems to me I've got all I want." A tank contains 30 lb of salt dissolved in 300 gallons of water. a brine solution is pumped into the tank at a rate of 3 gal/min; it mixes with the solution there, and then the mixture is pumped out at a rate of 3 gal/min. determine a(t), the amount of salt in the tank at time t, if the concentration of salt in the inflow is variable and given by cin(t) = 2 + sin(t/4) lb/gal. Which expression represents "6 more than x"? x - 6 6x x + 6 6 - x A patient needs surgery to open a clogged heart artery. This patient should look for a surgeon who is an expert in which of the following? A circle has a radius of 6x^9y^5 cm, what is the area of this circle in square centimeters Reductions in the population size of the graceful antelope, a hypothetical species, has led to inbreeding. deleterious after-effects of that inbreeding are leading to further decreases in the population size of this species. this pattern is an example of a(n) Almost no species ever reaches its biotic potentialthe population size that the species could produce if all individuals survived and produced offspring. anything that prevents the species from reaching its biotic potential is called a A group dedicated to promoting civil rights would most likely focus on addressing which problem? Circle J has center J (4,-3) and radius 5 What is the measure, in degrees, of the arc with endpoints A (9,-3) and B (4,2)? Explain the process you used (in words) and include the work you did to find this answer. In the northern hemisphere, tornadoes are most frequent during the ________. Gothic fiction is closely tied to A. romantic love. B. realism. C. dark romanticism. D. drama. In this triangle, side AT = 24. Please give the value for the sine, cosine, and tangent for this diagram (Which is the marked angle?). Give the value as a ratio ONLY. Make sure all ratios are in the lowest form.Be sure to explain IN WRITING how you find sine, cosine, and tangent! If you are not sure, check the directions in this problem!Question 1 options: A train travels at a constant speed. What is the train's speed between checkpoints, expressed as a unit rate? Use the information given in the picture to help you.