Two cars started moving from San Jose to San Diego. The speed of the faster car was 12 mph less than twice the speed of the other one. In 6 hours the faster car got to San Diego, and by that time the slower one still was 168 miles away from the destination. Find their speeds.

Answer:

I believe the answer is B.

Step-by-step explanation:

Because a proportional relationship is one where x is proportional (equal) to y, and Graph A does not fall into that category, and Graph B does, the answer should be B.

Answer:

The answer A

Step-by-step explanation:

Only graph A represents a proportional relationship.

Two quantities are proportional to each other if the graph is a straight line through the origin.

Answer:

F. $28 for jeans; $32 for shirt

Step-by-step explanation:

The two hand written equations are correct.

Multiply both sides of the first equation by -3.

-3j - 3s = -180

The second equation is

4j + 3s = 208

Add these two equations.

j = 28

The only choice that has $28 for a pair of jeans is choice F, so that is the correct answer.

Answer:

12 cm^3

Step-by-step explanation:

The volume of a pyramid with a square base is V = 1/3(l*w*h). Substitute l = 3, w = 3 and h = 3.

V = 1/3(3*3*4) = 1/3(36) = 12

Answer:

1) 269

2) 122

Step-by-step explanation: use pemdas

Parenthesis

Exponents

Division

Multiplication

Addition

Subtraction

The answer is

x=10+2y

Steps:

2(x-2y)=20

x-2y=20/2 (in fraction form 20/2)

x-2y=10

X=10+2y

2x-4y=20

Add both sides by -4y

2x=20+4y

Then divide both sides by 2 and you get your answer

x=2y+10

Answer:

2250$ thats the answer

Answer:

130.07 Watts

Step-by-step explanation:

hope this helps

Answer:

130.1 W

Step-by-step explanation:

Power is work or energy divided by time, so power has the units of joules/second, which is called the watt.

Power = gravitational potential energy / time

Gravitational potential energy = m g h

here m = mass

        g = gravity die to acceleration = 9.81 m/s²

        h = height

1 Ib = 0.453592 kg

32 Ib = 14.5 kg

1 feet = 0.3048 m

12 feet = 3.6576 m

Plug value in the formula

(14.5) (9.81) (3.6576)

520.3 J

520.3 / 4

130.1 W

Answer:

[tex]y=2.5x-1[/tex]

Step-by-step explanation:

we know that

The equation of the line into slope intercept form is equal to

[tex]y=mx+b[/tex]

where

m is the slope

b is the y-intercept

In this problem we have

[tex]15x-6y=6[/tex] ---> equation of the line in standard form

Convert to slope intercept form

Isolate the variable y

Subtract 15x both sides

[tex]-6y=-15x+6[/tex]

Divide by -6 both sides

[tex]y=(15/6)x-1[/tex]

[tex]y=2.5x-1[/tex] ----> equation of the line into slope intercept form

Answer:

13ft

Step-by-step explanation:

V= 1/3 x B x h

507=1/3 x B x 9

B= 169ft²

B= b x b

169= b x b

b = 13ft

The length of each side of the base of the pyramid is, 13 feet

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

We have to given that;

A square pyramid is 9 ft tall and has a volume of 507 cubic feet.

Since, We know that;

Volume of square pyramid is,

V= 1/3 x B x h

Substitute all the values, we get;

507=1/3 x B x 9

B = 169ft²

B = 13ft

Thus, The length of each side of the base of the pyramid is, 13 feet

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Answer: I predict 460.

Step-by-step explanation:

Answer:

C. 460

Step-by-step explanation:

We are given a dot graph which shows the number of Hybrid cars sold over the years.

The x-axis represents the years and y-axis represents the number of cars sold.

By looking at the graph, we can infer the following information.

In 2003, the number of cars sold was 120

In 2004, the number of cars sold was 160.

In 2005, the number of cars sold was 260.

In 2006, the number of cars sold was 360.

If you look at the last 3 years, the number of cars sold was increase by 100 by each year.

So, we can predict that in 2007, the number of cars sold was 460.

C. 460

Answer:

9

Step-by-step explanation:

multiply the 3 by 3

Answer:

5a

Step-by-step explanation:

Just use the reflexive property / reflexive angles, 5a = x and 4a equals the remaining side.

Answer:

100

Step-by-step explanation:

5a+4a=9a

180/9=a

20=a

4a+x=180

(4 times 20)+x=180

80+x=180

x=100

Answer: 1/3 or 33.3% (rounded to nearest tenth)

Step-by-step explanation:

3 and 6 are multiples of 3

6 sides of a dice

2/6= 33%

Answer:

1/3

Step-by-step explanation:

there are 2 multiples of 3 in a die, 6, 3 so you have a 2/6 chance or 1/3

Answer:

The graph in the attached figure

Step-by-step explanation:

Let

f -----> the number of pounds of fertilizer

s ----> the number of pounds of seeds

we know that

The inequality that represent the situation is

[tex]2f+20s\leq 4,000[/tex]

using a graphing tool

see the attached figure

The solution is the triangular shaded area

Answer:

top right :D

Step-by-step explanation:

One side is 6 the other is 17. If you multiply 6 by 17 it equals 102(AREA). If you add up, 6+6+17+17=46(PERIMETER)

Answer:

Stepby-step explanation:

step 1: L+W =18

step 2: L*W =80

find a pair factors 80 with a sum of 18 eg.

step 3: 1*80

step 4: 2*40

step 5: 4*20 etc.

Im gonna have to say its c

Answer:

Step-by-step explanation:

In order for these lengths to form a right triangle they need to satisfy the equation:

[tex]a^2 + b^2 = c^2[/tex], where c is always the highest value as it represents the length of the hypotenuse.

So plugging in:

10, 24, 26.

a = 10, b = 24, c = 26

[tex]10^2 + 24^2 = ?[/tex]

100 + 576 = 676

[tex]\sqrt{676} = 26[/tex]

So, this is a right triangle.

Now do this operation on all of the values.

Tip: a = random number smaller than the biggest, b = smaller than the biggest and not the same as 'a', c = always the biggest.

If [tex]a^2 + b^2 = c^2[/tex] then it is a right triangle

Answer:

(-a,b)

Step-by-step explanation:

You use midpoint formula which is (x1+x2/2),(y1+y2/2)

Answer:

56

Step-by-step explanation:

First, do you know what a CD is? ;-)

Since you will pick 3 CDs out of 8, and the order of the CDs don't import (1,2,4 is the same as 2,1,4 and 4,2,1 for example),we'll calculate the Combinations (and not the permutations). The formula for Combinations is:

[tex]C(n,r) = \frac{n!}{(r!(n-r)!)}[/tex]

Where n is the number of elements (8 in our case) an n is the sample (3 in our case).

[tex]C(8,3) = \frac{8!}{(3!(8-3)!)} = \frac{40320}{6 * 120} = 56[/tex]

So, there are 56 random groups of 3 you can pick from your potential 8 CDs.

Step-by-step explanation:

A triangular prism has five faces in total. There are two triangular bases and three rectangular lateral faces. Few examples of triangular prism are - a camping tent, Toblerone chocolate shape. The base of a prism is also a face.

Here the given prism is a triangular prism which has triangular bases.

Therefore, the answer is option C triangle.

By critically observing the triangular prism shown in the image attached above, the base shape of this triangular prism is a: C. triangle.

A triangular prism can be defined as a geometric shape (figure) with five (5) faces in total. Generally, a triangular prism comprises two (2) triangular bases and three (3) rectangular lateral faces.

By critically observing the triangular prism shown in the image attached above, we can logically deduce that the base shape of this prism is a triangle.

In conclusion, the base shape of this triangular prism is a triangle.

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Answer:

x=4

Step-by-step explanation:

11x-4=5x+20

4x=16

x=4

Answer:

x = 4

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x. First, subtract 5x and add 4 to both sides.

11x (-5x) - 4 (+4) = 5x (-5x) + 20 (+ 4)

11x - 5x = 20 + 4

Combine like terms. Simplify:

(11x - 5x) = (20 + 4)

6x = 24

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Divide 6 from both sides.

(6x)/6 = (24)/6

x = 24/6

x = 4

x = 4 is your answer.

~

Answer:

Step-by-step explanation:

That 7 in the 4th position of the given decimal is greater than 5 and thus indicates that we must round that 4 up:

25.0347 → 25.035.  This is "to 3 decimal places" accuracy.

The number 25.0347 rounded to 3 decimal places is 25.035.

The question is asking to round the number 25.0347 to 3 decimal places. As it is, the number 25.0347 already has 4 decimal places. Rounding it to 3 decimal places means you should retain up to the thousands place (3 digits after the decimal point) and adjust the last digit based on the digit that comes after it. If the 4th digit after the decimal point is 5 or more, you round up. If not, you just drop it.

In the number 25.0347, the fourth digit after the decimal point is 7, which is greater than 5. Therefore, we round up the third digit (4) by 1. So, the number 25.0347 rounded to 3 decimal places is 25.035.

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Answer:true

Step-by-step explanation:

The statement given is true , Option A is the correct answer.

A cylinder is a three dimensional figure which has two parallel circular bases joint by a curved surface of fixed length.

A statement related to Cylinder is given and asked if it is true

Yes , the statement that a cylinder is made up of discs of same radius , this can be very well understood from the figure itself as the cylinder definition says that it has a curved surface of same radius and fixed height.

Therefore Option A is the correct answer.

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Answer:

There are 28 more dogs than cats at the animal shelter.

Step-by-step explanation:

If the ratio of dogs to cats at an animal shelter is 3:1, that means there are 3 dogs for every 1 cat.

The way I think about it is I try multiplying every number by 3 and 1, kind of like process of elimination.

After using every number from 1-13, I finally got to 14. Now, 3 x 14 = 42 and 1 x 14 = 14. Add 42 + 14 and you will get 56.

So there are 42 dogs and 14 cats at the animal shelter.

However, it is asking for how many more dogs than cats there are, so you have to subtract 42 - 14 and the answer is 28 more dogs than cats.

Answer:

The solution in the attached figure

Step-by-step explanation:

case 1) we have

[tex]\frac{7}{4}x+3[/tex]

Classify

a) Name using degree ---> Is a linear polynomial (the power of the largest term is 1)

b) Name using Number of Terms ----> Monomial (the number of terms is 1)

case 2)

we have

[tex]5.2x^{2}-4x+2.5[/tex]

Classify

a) Name using degree ---> Is a quadratic polynomial (the power of the largest term is 2)

b) Name using Number of Terms ----> Trinomial (the number of terms is 3)

case 3)

we have

[tex]3/5[/tex]

Classify

a) Name using degree ---> Is a constant (the power of the largest term is 0)

b) Name using Number of Terms ----> Monomial (the number of terms is 1)

case 4)

we have

[tex]0.75x^{2}[/tex]

Classify

a) Name using degree ---> Is a quadratic polynomial (the power of the largest term is 2)

b) Name using Number of Terms ----> Monomial (the number of terms is 1)

A polynomial is said to be:

1) Constant if it is of degree 0 i.e. in general it is represented by: a

2) Linear if it is of degree one i.e. in general it is represented by: ax+b

3) Quadratic if it is of degree two i.e. in general it is represented by: [tex]ax^2+bx+c[/tex]

4) cubic if it is of degree 3 i.e. in general it is represented by: [tex]ax^3+bx^2+cx+d[/tex]

Also,

1) Monomial-- is a polynomial with one term.

2) Binomial-- is a polynomial with two terms.

3) Trinomial-- is a polynomial with three terms.

Answer: Just use the volume formula

Step-by-step explanation:

The volume formula for a rectangular prism is: V= L x W x H

The L is Length, the W is Width, the H is Height. If you had fractions for L, W, and H, you will just have to multiply them. (Example) V= 1/2 x 1/4 x 8/6

To calculate the volume of a rectangular prism with fractional dimensions, multiply the length, width, and height fractions together and simplify. This will yield the volume in cubic units.

Calculating the Volume of a Rectangular Prism Using Fractions :

To calculate the volume of a rectangular prism when the dimensions are given in fractions, you follow three main steps.

First, identify the length (L), width (W), and height (H) of the rectangular prism.

Second, multiply these three dimensions together: Volume = L × W × H. Finally, simplify the resulting fraction to get the volume of the prism.

For instance, if you have a prism with length 5/2 cm, width 3/4 cm, and height 2/3 cm, the volume would be (5/2) × (3/4) × (2/3) cm³.

When you multiply the numerators together and the denominators together, you get (5 × 3 × 2)/(2 × 4 × 3) cm³, which simplifies to 30/24 cm³.

This further simplifies to 5/4 cm³, which is the volume of the prism.

For this case we have that by definition, the equation of a line in the slope-intersection form is given by:

[tex]y = mx + b[/tex]

Where:

m: It's the slope

b: It is the cutoff point with the y axis

[tex]m = \frac {y2-y1} {x2-x1}[/tex]

We have the following points:[tex](x1, y1) :( 5,6)\\(x2, y2) :( 4,8)[/tex]

Substituting:

[tex]m = \frac {8-6} {4-5}\\m = \frac {2} {- 1}\\m = -2[/tex]

Then, the equation is:

[tex]y = -2x + b[/tex]

To find "b" we substitute one of the points:

[tex]8 = -2 (4) + b\\8 = -8 + b\\b = 8 + 8\\b = 16[/tex]

Finally, the equation is:

[tex]y = -2x + 16[/tex]

Answer:

Option B

Answer:

Step-by-step explanation:LEVEL 1:   x + 1

LEVEL 2:  3x + 1 plus 2 bonus points

A)  3x - x + 2     =   2 + 2 = 4 more points earned on level 2

B) x + 1 + 3x + 1 + 2

    4x + 4

4x + 4 ÷ 2 = 2x + 2

To determine the ratios and averages of Travis's score, first the total points earned on each level were determined. From there, the larger total was divided by the smaller for part A, and the total points from both levels were averaged for part B. The calculations involve algebraic expressions and basic mathematical operations.

To solve this, first identify the total points earned on each level. On Level 1, Travis earned x + 1 points. On Level 2, he earned 3x + 1 points as well as 2 bonus points, meaning he earned a total of 3x + 3 points.

a) To find how many times more points Travis earned on the second level than the first, you'd calculate (3x + 3)/(x + 1).

b) To find the average number of points earned, add the total points from both levels and divide by 2: ((x + 1) + (3x + 3))/2.

c) Both calculations involve algebraic expressions relating to the specific number of points earned on each level, by using the operations of addition, multiplication and division.

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Answer:

Simple, 19 days.

Step-by-step explanation:

Divide the number of versus you want to read by the among of versus per day you want to read.

76 / 4 = 19

To learn 76 Bible verses at a pace of 4 verses per day, it will take 19 days.

This question demands basic understanding of mathematical operations in general and about basic understanding of word problems in general.

If you need to learn 76 Bible verses and you plan to learn 4 verses a day, you would do some quick math to determine how many days it will take to learn all the verses. By dividing the total number of verses by the number of verses you can learn a day, you get

76 ÷ 4 = 19 days.

So, it will take you 19 days to learn all 76 Bible verses, assuming that you maintain the consistent pace of learning 4 verses per day.

Answer:

d may cause f

Step-by-step explanation:

Apex

The true statement is that the d may cause f. Correlation is a statistical measure used to measure the relationship that exists between two variables.

Correlation is a statistical measure used to measure the relationship that exists between two variables.

Here are the options

d must not cause f.

f must cause d.

d must cause f.

d may cause f.

1. Positive correlation: it means that the two variables move in the same direction. If one variable increases, the other variable also increases.

For example, there should be a positive correlation between quantity supplied and price

When there is a positive correlation, the graph of the variables is upward sloping

2. Negative correlation:  it means that the two variables move in a different direction. If one variable increases, the other variable decreases.

For example, there should be a negative correlation between quantity demanded and price

When there is a negative correlation, the graph of the variables is downward sloping

3. Zero correlation: there is no relationship between the variables

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