A boy saves up $79 for a gift for his friend. However, upon reaching the store, he realizes that he saved 257% of the actual amount he needed to buy the present. How much does the present cost? Round to the nearest cent.

Hint: This is a Part = Percent × Whole problem.

You're given the part (79) and the percent (257%, or 2.57).

Substitute these into the equation to find the whole.

Answer:multiply the width and depth of the roomStep-by-step explanation:

the horizontal and vertical dimension

Answer:

x - 5

Step-by-step explanation:

Again, we can just write the width as (x² - 25) / (x + 5) which will be x - 5.

Answer:

area = length x width

x² - 25 = x + 5 · width

(x - 5)(x + 5) = (x + 5)w

(x - 5)(x + 5) / (x + 5) = (x + 5)w / (x + 5)

x - 5 = w

Step-by-step explanation:

1. write down the formula of area.

2. since the area is a difference of squares, factor them into two binomials, and replace the length by its measure. you can use w for width

3. to get width, divide the one of the binomials with the length that matches together to get w.

Answer:

x = - 1

Step-by-step explanation:

Given a parabola in standard form

y = ax² + bx + c ( a ≠ 0 ) , then the equation of the axis of symmetry is

x = - [tex]\frac{b}{2a}[/tex]

y = - 2x² - 4x - 11 ← is in standard form

with a = - 2 and b = - 4 , thus

x = - [tex]\frac{-4}{-4}[/tex] = - 1

x = - 1 is the equation of the axis of symmetry

Answer:Kelas: 7

Mapel: matematika

Kategori

: Kata kunci aritmatika sosial: laba, rugi,

Kode impas: 7.2.6 [revisi matematika kelas 7 K13 Bab 6-aritmatika sosial]

Diskusi:

dalam kegiatan atau kondisi yang kita ketahui 3 istilah, yaitu:

1. untung

2. kehilangan

3. impas.

Jika aktivitas atau kondisi keuntungan, penarikan harga lebih kecil dari entri

Harga.

Jika kondisi peristiwa atau kerugian, harga penarikan lebih besar dari entri

Harga.

Jika aktivitas atau kondisi impas, harga pengeluaran sama dengan entri

Harga.

Mari kita lihat

Pertanyaan.

Catat tabel di lampiran 2.

1. jika harga masuk RP 700.000, 00 dan harga produksinya Rp 900,000, 00, maka harga pendapatan lebih kecil dari harga pengeluaran.

Jadi, kondisi ini

Kehilangan.

Kemudian

RP 900,000-RP 700.000

, 00 = RP 200,000 Jadi, jumlah kerugian adalah RP 200,000, 00 2.

Jika harga masuk adalah Rp 1.100.000 dan biaya pengeluaran Rp 1.100,00, maka harga pendapatan sama dengan harga penarikan.

Jadi, kondisi impas

Terjadi.

3. jika harga tiket masuk RP 2.100.000 dan harga pengeluaran RP 2.000,00, maka harga masuk lebih besar dari pengeluaran

Harga.

Jadi, kondisi yang terjadi menguntungkan

.

Kemudian

RP 2.100.000-RP 2.000.000, 00 = RP 100,000 Jadi, jumlah keuntungannya RP 100,000, 00.

4. jika harga masuk RP 1.650.000 dan harga produksi RP 1.550.000, maka harga masuk lebih besar dari pengeluaran

Harga.

Jadi, kondisi yang terjadi menguntungkan

.

Kemudian

RP 1.650.000-RP 1.550.000 = RP 100,000 Jadi, jumlah keuntungannya RP 100,000, 00.

berharap ini membantu!

Answer:

See below

Step-by-step explanation:

If you consider an open circle, it would exclude the value with which we have circled when writing the inequality. Hence the only possible signs with in such an example can be a greater than sign ( > ) or less than sign ( < );

Let us take a look at an example to help. We are given a graph with an open circle on the number say 3. An arrow extends to the right of this number 3;

[tex]Inequality Sign - <,\\Inequality - x > 3,\\[/tex]

Hope this helps!

Answer:

Dear friend i hope the answer is 4753 which is the mystery four digit number.

Answer: each soda costs $1.5 and each hotdog costs $3.

Step-by-step explanation:

If H is the price for one hotdog and S is the price for one soda, we have the equations:

for Jack.

3*H + 2*S = $12

For Angie.

1*H + 4*S = $9

Now we can isolate one of the variables in one of the equations and then replace it in the other equation, let's isolate H in the second equation:

H = $9 - 4*S

now we replace it in the first eq

3*H + 2*S = $12

3*($9 - 4*S) + 2*S = $12

$27 - 12*S + 2*S = $12

-10*S = $12 - $27 = -$15

S = $15/10 = $1.5

Now we can replace it in the equation for H and get:

H = $9 - 4*$1.5 = $3

So each soda costs $1.5 and each hotdog costs $3.

Answer: One hotdog cost $3 and One soda costs $1.5

Step-by-step explanation:

Let hotdogs be denoted by h

Let sodas be denoted as s

Jack bought 3 hotdogs and 2 sodas for a total of $12. This can be written as:

3h + 2s = 12

Angie bought 1 hotdog and 4 sodas for $9. This can be written as:

h + 4s = 9

3h + 2s = 12

h + 4s = 9

1 × (3h + 2s = 12)

3 × (h + 4s = 9)

3h + 2s = 12

3h + 12s = 27

Subtract the equation

-10s = -15

s = -15/-10

s = 1.5

One soda cost $1.5

Since h + 4s = 9

h + 4(1.5) = 9

h = 9 - 6

h = 3

One hotdog costs $3

Answer:

Type 7.5 in the box!

Step-by-step explanation:

Consider the trapezoid formula ( ( base 1 + base 2 ) / 2 ) * height;

[tex]Length of Base 1 - 1 unit,\\\\Length of Base 2 - 4 units,\\\\Length of Height - 3 units ( length of x - intercept in shaded region )\\\\Area of Trapezoid = ( Average of Bases ) * Height = ( ( 1 + 4 ) / 2 ) * 3 = ( 5 / 2 ) * 3 = 7.5 square units,\\\\Solution; 7.5 square units[/tex]

Area = 7.5 square units

The area of the trapezoid is 7.5 square units.

The length of base 2 = 4 units.

The length of height = 3 units.

The area of the trapezoid

= (Average of the two bases) × Height

Putting all the values in the above formula, we get

The area of the trapezoid

= {(1 + 4)/2} × 3

= 7.5 square units.

Hence, the area of the trapezoid is 7.5 square units.

To learn how to find the area of the trapezoid, refer:

Answer:

hold up

Step-by-step explanation:

Answer:

250 cards

Step-by-step explanation:

Let the number of baseball cards he originally had be x.

He sold 20% of the baseball cards after week one. This means that after week one the number of cards he had was:

x - (20/100 * x) = x - 0.2x = 0.8x

During week two he bought 20% more cards than he had after week one. This means that after week two, he had:

0.8x + (20/100 * 0.8x)

= 0.8x + (0.2 * 0.8x)

= 0.8x + 0.16x = 0.96x

He now has 10 fewer cards. This means that:

x - 10 = 0.96x

Collecting like terms:

x - 0.96x = 10

0.04x = 10

=> x = 10/0.04 = 250

He had 250 cards originally.

Slope of AB = 7-5/9-4

=2/5

Solution,

(9x+9)+(8c-5)

=9x+9+8c-5

=9x+8c+9-5

=9x+8c+4

hope it helps

Good luck on your assignment

Step-by-step explanation:

1. go to google

2. search your question

3. go to a website that tells you the answers

You got your answer. ;)

Answer:

0.18

Step-by-step explanation:

Given: 60% students were in high school, 40% were in middle school and of the high school students, 30% had visited a foreign country

To find: probability that the student is in high school and has visited a foreign country

Solution:

Let x denotes total number of students

Number of students in high school = 60% of x = [tex]\frac{60}{100}x[/tex]

Number of students in middle school = 40% of x = [tex]\frac{40}{100}x[/tex]

Number of students who are in high school and have visited foreign country =  30% of Number of students in high school = [tex]\frac{30}{100}(\frac{60}{100})x=\frac{18}{100}x[/tex]

Probability that the student is in high school and has visited a foreign country = Number of students who are in high school and have visited foreign country/ Total number of students = [tex]\frac{\frac{18}{100}x}{x}=\frac{18}{100}=0.18[/tex]

There are 12 bags of apples on a market stall. The number of apples in bag 12 is 96.

The mean is the average value which can be calculated by dividing the sum of observations by the number of observations

Mean = Sum of observations/the number of observations

It is Given that, there are 12 bags of apples on a market stall.  

The mean number of apples in each bag is 8.  

We need to calculate the number of apples in the 12 bags.

The mean of "n" observations is given as

Mean = Sum of observations/the number of observations

8 = sum of observations/12

The total number of apples = 8 x 12 = 96

Hence, there are 96 apples in 12 bags.

Learn more about mean;

https://brainly.com/question/17060266

#SPJ1

Answer:

2.08

Step-by-step explanation:

12.48 ÷ 6

= 2.08

Answer:

Hi

Answer:

= 1.6

Answer:

See below.

Step-by-step explanation:

Squaring a number means to multiply the number by itself.

For example, 3^2 means 3 * 3.

8^2 means 8 * 8.

(-6)^2 means (-6) * (-6).

In each case above, you see that the number that is squared is multiplied by itself.

In this case, (-4.5)^2, squaring the number -4.5, means multiply the number -4.5 by the number -4.5

(-4.5)^2 = (-4.5) * (-4.5)

Now we need to actually multiply -4.5 by -4.5

When you multiply a negative number by a negative number, the result is positive, so the product of -4.5 and -4.5 is a positive number. To find that number, you multiply 4.5 by 4.5

4.5 * 4.5 = 20.25

Therefore, (-4.5)^2 = 20.25

Answer:

D

Step-by-step explanation:

It is the organized one with the center bar also being the largest value.

Answer:

shiiiiii this is easy ight so

A

A

B

hope it helps

Step-by-step explanation:

Answer: 3.83m^3

Step-by-step explanation:

Use formula for volume of a triangular prism (Area of triangle times length of the figure)

Answer:

6

Step-by-step explanation:

idk i just added them all together

Answer:

3

Step-by-step explanation:

first work out wax used for cone using formula

1/3 x 3.14 x r squared x height

using this the total for the candle must be 113

formula for a sphere is 4/3 x 3.14 x r cubed

so we know 113 /3.14 / 4/3 = r cubed

cube root 27 = 3

Answer:

50%

Step-by-step explanation:

35 + 15 = 50

so the other half of the marbles is, 50%

Answer:

identify if the angle is a right angle, if it is bisected it means both sides are the same, set both equations equal to each other or add them up and set them equal to 90 or 180

Step-by-step explanation:

that is the explanation.

Answer:

5

Step-by-step explanation:

my answer is 5

6 is the least significant

Answer:

it is 4cm long

Step-by-step explanation:

You multiply 6 by 2 to get 12, then subtract 12 from 20 and get 8. Then you divide 8 by 2 to get 4. If you want to check it, you can add 6+6+4+4 to get 20

Answer: 4

Step-by-step explanation: the definition of a rectangle states that opposite sides of the rectangle are congruent. this means that there is 2 sides that measure 6cm. These two sides added together give us 12cm. By working backwards, we can subtract 12cm from the perimeter (20cm), this gives us 8cm. by diving that by 2 we can find the lenght of the missing sides, 4cm each.

Answer:

70°

Step-by-step explanation:

Properties of a kite are:

a) They have two congruent sides

b) Their diagonal is perpendicular to each other.

c) On a kite, we also have two angles that are opposite and congruent to each other. These angles are the same

We would be using the property of a kite that says "On a kite, we also have two angles that are opposite and congruent to each other. These angles are the same" to solved this question.

In the diagram , the angles Z and X are opposite and congruent to one another. This means they are equal to each other.

Since angles Z= angle X

Let us call both of them angle a

Since a Kite is a Quadrilateral shape, the sum of angles in a Quadrilateral = 180°

Angle W = 90°

Angle Y = 130°

Angle X = a°

Angle Z = a°

Hence,

90° + 130° + a° + a° = 360°

220° + 2a° = 360°

2a° = 360° - 220°

2a° = 140°

a° = 140/2

a° = 70°

Therefore, from the calculation above, we can say that the measure of x = 70°

Answer:

70°

Step-by-step explanation:

Properties of a kite are:

a) They have two congruent sides

b) Their diagonal is perpendicular to each other.

c) On a kite, we also have two angles that are opposite and congruent to each other. These angles are the same

Answer:

[tex]g(x)=-5\cos (2x)[/tex]

Step-by-step explanation:

The given function is

[tex]f(x)=5\cos (2x)[/tex]

If a function reflected over the x-axis, then x-coordinate remains same but the sign of y-coordinate is changed.

[tex]P(x,y)\Rightarrow P'(x,-y)[/tex]

If function f(x) is a reflection over the x-axis to get the of g(x), then the resultant function is

[tex]g(x)=-f(x)[/tex]

Substituting the value of function f(x), we get

[tex]g(x)=-5\cos (2x)[/tex]

Therefore, the required function is [tex]g(x)=-5\cos (2x)[/tex].

Answer:

the anwer is D: 44,44,92

Step-by-step explanation:

2n+10=4n+2 ---->8=2n ------> n=4

11n=11(4)=44

m<N=m<L=44

180-44-44=92

Answer:

The median of Group A is less than that of Group B.

Step-by-step explanation:

Assume that your box-and-whisker plots look like those below.

1. Compare medians

Group A = 79

Group B = 79.5

The median of Group A is less than that of B

Correct.

2. Compare ranges

Group A: 82 - 76 = 6

Group B: 81 - 76 = 5

The range of Group A is greater than that of Group B.

Option B is wrong.

3. Compare Q1s

Group A: 78

Group B: 77

Q1 for Group A is less than that for Group B.

Option C is wrong.