I need help and I’m not sure how to solve this. we’re supposed to copy the answers from our workbooks but I haven’t got mine :(

Answer:

1. A, 450 = 2(p+w); 450 = 3(p-w)

2. A, 2 units

3. D, Between step 6 and step 7

Step-by-step explanation:

1. This one is confusing on first glance.

[tex]450 = 2(p+w); 450 = 3(p-w)[/tex] Lets break down this equation.

[tex]2(p+w)[/tex] means, the plane speed, plus the windspeed, will take 2 hours to travel 450 KM. The reason we add the plane speed and the windspeed is because we have a tailwind instead of a headwind, the wind is pushing us forward, adding to the planes speed.

[tex]3(p-w)[/tex] means, the plane speed, minus the windspeed, will take 3 hours to travel 450 KM. We subtract the wind speed from the plan speed because the wind is a headwind, it's pushing us backwards, taking away from the planes speed.

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2. Let set these up as two-sided equations.

[tex](6x+3) + (4x) + (2x + 1) = (5x) + (5x) + (3x+2)[/tex]

Combine like terms

[tex]12x + 4 = 13x + 2[/tex]

Subtract 12x from both sides

[tex]4 = 1x + 2[/tex]

Subtract 2 from both sides

2 = 1x, or x = 2.

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3. Take a look at step 6. You want to get x by itself, to do that, and get rid of the 8, you'd divide both sides by 8 to get [tex]x = -\frac{15}{4}[/tex]

Answer:

[tex] \sf \large \frac {1}{8}b²c[/tex]

Step-by-step explanation:

3/4ab/6/abc

= 1/8ab²c/a

= 1/8b²c

The angle, its complement, and its supplement are 36, 54 and 144 degrees respectively

The sum of complementary angles s 90 degrees while that of supplementary angles is 180 degrees.

Let the complement of an angle be 90 -x and its supplement be 180 -x

If three times the measure of a supplement of an angle is eight times the measure of a complement of the angle, then;

3(180-x) = 8(90-x)

Expand

540-3x = 730 - 8x

540-720 = -8x + 3x

180 = 5x

x = 180/5

x = 36 degrees

Complement  = 90 - 36 = 54degrees

Supplement = 180 - 36 = 144 degrees

Hence the angle, its complement, and its supplement are 36, 54 and 144 degrees respectively

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Euclidean geometry differs from spherical geometry because Euclidean geometry is used to set points by the use of plane.

Euclidean geometry is the study of geometrical shapes (plane and solid) and figures based on different axioms and theorems.

Now since Spherical geometry is the geometry of the two-dimensional surface of a sphere. In this context the word "sphere" refers only to the 2-dimensional surface and other terms like "ball" or "solid sphere" are used for the surface together with its 3-dimensional interior.

Euclidean geometry differs from spherical geometry because Euclidean Geometry are known to make use of a plane to be able to set points and lines, but Spherical Geometry are known to make use of spheres to set up points and great circles.

Thus, Euclidean geometry differs from spherical geometry because Euclidean geometry is used to set points by the use of plane.

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Pat and John will meet in 3 hours.

It should be noted that speed = Distance / Time

The appropriate equation will be:

80t + 24t = 312

104t = 312

t = 312/104

t = 3. hours

Therefore, it will take them 3 hours to meet.

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Solving a quadratic equation, the youngest age for which the average income of the lawyer is of $250,000 is of 26 years.

A quadratic function is given according to the following rule:

y = ax² + bx + c

[tex]\Delta = b^2 - 4ac[/tex]

The solutions are:

[tex]x_1 = \frac{-b + \sqrt{\Delta}}{2a}[/tex]

[tex]x_2 = \frac{-b - \sqrt{\Delta}}{2a}[/tex]

In which:

[tex]\Delta = b^2 - 4ac[/tex]

For this problem, the equation that models the income as function of age is given by:

I(x) = -425x² + 45500x - 650000.

The income is of 250,000 when I(x) = 250000, hence:

250000 = -425x² + 45500x - 650000.

425x² - 45500x + 900000 = 0.

Hence the coefficients are a = 425, b = -45500 and c = 900000, then:

The youngest age for which the average income of the lawyer is of $250,000 is of 26 years. (the oldest is of 81 years).

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Answer: Delila is correct about this determination.

Step-by-step explanation: The rule for multiplying two negatives is that a negative and a negative always equal a positive. Therefore, multiplying two negatives will give a positive. However, we still have to multiply that positive by another negative to get our answer. Another multiplication rule states a negative and a positive always equals a negative. Let's set up an example with the numbers -7, -8, and -4:

Using the first multiplication rule mentioned above, let's multiply:

-8 x -7 = 56

Using the second multiplication rule mentioned above, we can finish the equation and get our answer:

56 x (-4) = -224

-7 x -8 x -4 = -224.

Final answer: Delila is correct. Multiplying three negatives will result in a negative solution.

Answer:

116 g

Step-by-step explanation:

Zn:Cu = 4:19

so 551 x (4/19) = 116

Answer:

V = 1 (Please mark the answer as brainliest)

Step-by-step explanation:

8(5 - 6v) = -7 - v

40 - 48v = -7 - v

40 = -7 + 47v

47 = 47v

1 = v

Answer:

v = 1

Step-by-step explanation:

Let's solve the problem,

→ 8(5 - 6v) = -7 - v

→ 40 - 48v = -7 - v

→ 40 + 7 = -v + 48v

→ 47v = 47

→ v = 47/47

→ [ v = 1 ]

Hence, the value of v is 1.

answer:

1.

[tex]9y - 1[/tex]

2.

[tex] { \times }^{3} - { \times }^{2} + \times [/tex]

3.

[tex] - 3 {a}^{2} + a + 2[/tex]

4.

[tex] - { \times }^{2} [/tex]

5.

[tex] - 4 { \times }^{5} + 16 { \times }^{3} - 20 { \times }^{2} [/tex]

6.

[tex]8 { \times }^{3} + 6 { \times }^{2} - 32x + 15[/tex]

7.

[tex] { \times }^{2} - \times - 20[/tex]

8.

[tex]24 { \times }^{2} - 6 \times + 1[/tex]

9.

[tex] { \times }^{2} - 6 \times + 5[/tex]

10.

[tex]10 { \times }^{5} + 3 { \times }^{3} - 2 \times [/tex]

2

Step-by-step explanation:

Answer:

The equation for the number of people is 25.50x + 6.25 = 235.75 and the number of people who can go to the amusement park are 9.

Step-by-step explanation:

We have,

Spend on parking and admission = $235.75  

Spend on parking  = $6.25

Cost of ticket per person = $25.50

Let number of number of people = x

Now,

According to the question;

25.50x + 6.25 = 235.75

So, this the equation for number of number of people.

Now,

25.50x + 6.25 = 235.75

25.50x = 229.50

x = 9

So, number of number of people is 9, which we find out using the above mentioned equation.

Hence, we can say that the equation for the number of people is 25.50x + 6.25 = 235.75 and the number of people who can go to the amusement park are 9.

The number of people who can go to the amusement park is 9 they have $235.75 to spend on parking and admission. Parking is $6.25.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that:

A group of friends wants to go to the amusement park. They have $235.75 to spend on parking and admission.

Parking is $6.25, and tickets cost $25.50 per person, including tax.

Let x be the number of people

6.25 + 25.50x = 235.75

25.50x = 235.75 - 6.25

25.50x = 229.5

x = 9

Thus, the number of people who can go to the amusement park is 9 they have $235.75 to spend on parking and admission. Parking is $6.25.

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The correct answer for  0.504 ÷ 8 is option B which is 0.063

0.504 / 8 is solved by removing the decimals first and then the division as required.

0.504 / 8

= 504/1000 / 8

= 504 / 8000

= ( 504 / 8 ) * ( 1 / 1000 )

= 63 *  ( 1 / 1000 )

= 0.063

These are class of numbers that can be represented as fractions inform of two integers. Such numbers while in fractions, the denominator should not be zero and while decimal do not need to approximations to terminate them.

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The area of the base is 216 cm².

The volume of a cuboid is 1296 cm³.

The breadth of the cuboid is double the height of the cuboid and the length of the cuboid is triple the height of the cuboid.

Let the length, breadth, and height of the cuboid be l, b, and h respectively.

Then,

l = 3(h)

b = 2(h)

The volume of a cuboid is given as:

V = l × b × h

1296 = 3(h) × 2(h) × h

1296 = 6 × h³

h³ = 1296 / 6

h³ = 216

h = ∛216

h = ∛(6)³

h = 6 cm

Therefore, the length of the b is l = 3(h) = 3 × 6 = 18 cm

The breadth of the cuboid will be:

b = 2(h)

b = 2 × 6

b = 18 cm

Now the volume of the cuboid is also given as:

Volume = base area of  cuboid × height

1296 = base area × 6

base area = 216 cm²

The base area is 216 cm².

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Answer:

y = x + 9

Step-by-step explanation:

y = mx + b  Use the x and y from the point (-5,4) and the slope to find b.  They you can write the equation.  An ordered pair is in the form of (x,y)

y = mx + b

4 = (1)(-5) + b

4 = -5 + b   Add 5 to both sides of the equation

9 = b

Now write the equation

y = x + 9

Answer:

22.7

This is becuase 6 is closer too 7. Thus we would round too 7.

The total volume of the solid = 1,035,000 cm³

Volume of a Pyramid = 1/3(length)(width)(height).

Volume of a cuboid = (length)(width)(height).

Volume of the Pyramid = 1/3(length)(width)(height)

Volume of the Pyramid = 1/3(90)(50)(240 - 225)

Volume of the Pyramid = 1/3(90)(50)(15)

Volume of the Pyramid = 22,500 cm³

Volume of the cuboid = (length)(width)(height)

Volume of the cuboid = (90)(50)(225)

Volume of the cuboid = 1,012,500 cm³

The total volume of the solid = 22,500 + 1,012,500

The total volume of the solid = 1,035,000 cm³

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Answer:

x> -2

Step-by-step explanation:

The equivalent expression for the expression consisting of mixed fraction 2 { 5 5/8 } + 3 { 9 13/16 } is 651/16.

According to the given question.

We have an expression consisting of mixed fractions.

2 { 5 5/8 } + 3 { 9 13/16 }

Since, we convert the mixed fraction into improper fraction by

Step 1: Multiply the denominator with the whole number.

Step 2: Add the numerator to the product obtained from step 1.

Step 3: Write the mixed fraction with the sum obtained from step 2 as the numerator and the denominator of the original fractional part of the mixed fraction.

Therefore, the equivalent expression for the expression 2 { 5 5/8 } + 3 { 9 13/16 } is given by

2{45/8} +3{157/16}

= 90/8 + 471/16

=  [180 + 471]/16

= 651/16

Hence, the equivalent expression for the expression consisting of mixed fraction 2 { 5 5/8 } + 3 { 9 13/16 } is 651/16.

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An equation to find the number of treats t that was in the original package is t=10+4(15).

First, you set aside the 10 and that is the start of your equation.

We need to find an equation to find the number of treats t that was in the original package.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Now, t=10+4(15)

⇒t=10+60

⇒t=70

Therefore,  an equation to find the number of treats t that was in the original package is t=10+4(15).

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The solution of the equations −6x − 6y = −42 and −x + 2y = 8 will be (2, 5).

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

The equations are given below.

−6x − 6y = −42      ...1

−x + 2y = 8            ...2

From equation 2, we have

x = 2y − 8

Put the value of x in equation 1, then we have

−6(2y − 8) − 6y = −42

−12y + 48 − 6y = − 42

18y = 90

y = 5

Then the value of x will be

x = 2(5) − 8

x = 10 − 8

x = 2

The solution of the equations −6x − 6y = −42 and −x + 2y = 8 will be (2, 5).

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Rick will have to wash the plates for three minutes.

By first figuring out the value of a single unit and then multiplying the number by that value, the unitary approach in mathematics can be used to determine the required value.

• The unitary technique can be used to determine how many kilometres can be covered with 2 litres of gasoline, for instance, if a car goes 80 km on 6 l of fuel.

He washed 4 dishes in 2 minutes, thus we need to calculate how long it would take Rick to wash 6 plates. 4 plates, according to the rule, equals 2 minutes. Applying the unitary approach 1 plate in 2/4 of a minute 1 plate Equals 12 minute. 3 minutes equals 6 plates (12 times 6.6 plates).

Therefore, Six dishes will need to be washed in 3 minutes.

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5. The relationship is Linear and the equation is 500 × 1.1 + 500 = 1050.

6. The relation ship is Linear and the equation is 6 × 2/3 = 4

Given,

5. The population of a town = 500

    The growth of population expected by the city planner = 1.1

    That is, 500 × 1.1 + 500 = 1050

This is a Linear equation.

6. The distance from where the basketball fall down = 6 feet

    Basket ball bounce back its previous height = 2/3

That is,  6 × 2/3 = 4

This is a Linear equation.

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Answer:

7. I attached my answer ... have a nice day

Answer:

28°

Step-by-step explanation:

63 -35 = 28

Answer: 17. The fower will last 85 days

18. She ran at a constant pace of around 12.94mph (if her time was 14 minutes and 24.6 (14.14m) ) or 12.7mph (if her time was 14 minutes 41 seconds) (the .41 confused me so I did both possible solutions)

Hope this helped c:

Subsets of the specified set equal 16.

The set's appropriate subset is equal to 15.

A set is the collection of specific, distinct items from our perception (Anschauung) and from our thought, which are referred to as the set's elements. A set's elements or members can be anything, including numbers, people, alphabet letters, other sets, and so on. Sets are typically indicated.

given data:- { 5​, 7​, 17​, 15 ​}

this set have 4 elements:

We are aware that the number of subsets of a set with n elements is represented by 2^n

where n denotes the set's element count.

as a result, the given set's subsets = 2^4

= 16

Because the original set itself is subset of itself, it is not a legitimate subset.

Consequently, a proper subset of a set:- 2^n - 1

= 2^4 - 1

= 16 -1

 = 15

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The combination of hours that Keitaro can walk and run in a month to reach his goal will be A. 2 hours walking; 12 hours running

From the information, Keitaro walks at a pace of 3 miles per hour and runs at a pace of 6 miles per hour. Each month, he wants to complete at least 36 miles but not more than 90 miles.

The equation is

3w + 6r ≥ 36

3w + 6r ≤ 90

The combination of hours that Keitaro can walk and run in a month to reach his goal will be 2 hours walking, and 12 hours running.

This will be:

3w + 6r ≤ 90

3(2) + 6(12)

6 + 72 = 78

Therefore, 78 is less than 90.

The correct option is A.

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