If a model car has a scale of 3in.: 5ft., what would be the length of the model be if the actual car was 15 ft. long?

Answer:

Arithmetic

Step-by-step explanation:

We are given the sequence :

6.6, 7.2, 7.8, 8.4, 9, ...

We need to determine whether it is arithmetic, geometric, or neither.

Arithmetic sequences are a bunch of numbers that gradually increase or decrease through equal amounts of adding or subtracting.

Geometric are the same thing but the numbers are gradually increasing or decreasing through multiplication or dividing.

Looking at the sequence, we notice that 0.6 is added into every single number to reach the one next to it.

It fits the description of an arithmetic sequence, therefore the sequence is arithmetic.

Answer:

B

Step-by-step explanation:

Answer:

Step-by-step explanation:

Remark

I don't think you need the quadratic formula for this equation. It just factors into (b - 2)(b - 2), but I'll do it because you requested it.

Formula

[tex]\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a}[/tex]

Givens

a = 1

b = - 4

c = 4

Solution

x = - - 4 +/- sqrt((-4^2) - 4*1*4)

       ====================

                   2*1

x = 4 +/- sqrt (16 - 16)

          ==========

              2

x = 4/2

x = 2

There are 2 roots but both of them are the same. Some teachers say there is only 1 root. I'm in that group.

Answer:

7/3

Step-by-step explanation:

1x6

1x(-x)

subtract and solve

Answer:

answer is b²a is the correct answer

Step-by-step explanation:

happy to help :)

Answer:

( 4 x 10 y )

Step-by-step explanation:

Answer:

[tex]61.261 {ft}^{2} [/tex]

Step-by-step explanation:

[tex] \frac{270}{360} \times 2\pi \: r \\ \frac{270}{360} \times 2 \times \pi \times 13 \\ = 61.261 {ft}^{2} [/tex]

Answer:

its 122

Step-by-step explanation:

just did it on khan academy

Answer:

4

Step-by-step explanation:

Answer:

1 : 2 = 4 : 8

Step-by-step explanation:

Answer:

13 %

I hope it's correct.

Step-by-step explanation:

initial marks (o) = 98

final marks (m) = 85

rate (r) = ?

Now,

r =

[tex] \frac{o - m}{o} \times 100percent[/tex]

= ((98-85)/98)x100%

=13.26%

Answer:

x564.99

Step-by-step explanation:

Answer:

Step-by-step explanation:How do we know when a numerical expression is undefined? It is when the denominator equals zero. When we have a denominator that equals zero, we end up with division by zero. We can't divide by zero in math, so we end up with an expression that we can't solve.

To find:

Which of the four expressions are undefined, or not possible to calculate.

Steps:

Lets go through each option one by one

Option A:

[tex]-\frac{0}{2}[/tex] , in this expression a negative zero is divided by 2, we know that zero divided by any number is equal to 0.

[tex]-\frac{0}{2}= -0 = 0[/tex]

Since option A is defined. Now lets go to option B

Option B:

[tex]\frac{3}{6-6}= \frac{3}{0}[/tex]

this expression shows 3 divided by a zero, but dividing any non-zero number by 0 is not possible.

Therefore option B is undefined. We found out the answer but lets continue for learning purposes.

Option C:

0 ÷ 11 = [tex]\frac{0}{11}[/tex]

This expression is similar to the first expression, where zero is divided by any number.

[tex]\frac{0}{11} = 0[/tex]

Therefore option C is defined. Now let continue to option D

Option D:

[tex]\frac{-4+0}{8}= \frac{-4}{8}= \frac{-1}{2}[/tex]

In this expression, the final answer after simplifying is -1/2 which is a number and is possible to calculate

Therefore option D is defined.

Happy to help :)

If u need any more help feel free to ask

Answer:

69

Step-by-step explanation:

Nearest 10 = 60

15%×60 = 9

60+9 = 69

Answer:

35% of 100 is 35

Step-by-step explanation:

the first person who answered this did a good job at explaining it

Answer:

35% of 100 is 35

Step-by-step explanation:

so trying to get this right hope it helps :D

Answer:

−32^2−20

Step-by-step explanation:

Answer:

the answer is the first option

Answer:

80% of the class is made up of boys

Step-by-step explanation:

7/35 are girls, which means, 28/35 are boys (35 - 7)

To find the percentage, you divide 28 by 35

28/35 = 0.8 or 80%

Answer:

Minor Arc: AE, FA

Semicircle: AEB, FDE

Major Arc: FED, BDF

Step-by-step explanation:

Required

Classify base on the type or arc

Keynote

Minor arcs are less than 180 degrees

Semicircle are equal to 180 degrees

Major arcs are less than 180 degrees

Using the above keynote, we have the following observation

AE: Minor

AEB: Semicircle

FDE: Semicircle

FED: Major

FA: Minor

BDF: Major

Answer:

A)  3+x

Step-by-step explanation:

6x + 2x² / 9x² + 3x³

2x(3 + x) / 3x²(3 + x)

Answer:

89 cm

Step-by-step explanation:

By Pythagoras Theorem,

c² = 80² + 39²

c² = 6400 + 1521

c² = 7921

c = 89 cm

Hope it helps :)

Answer:

-5n + 2

Step-by-step explanation:

distribute 2 into (1 - 4n)

3n + 2 - 8n = -5n + 2

Answer:

A graph that would be best for a group of students trying to figure out there favorite pizza is a pie graph.

Step-by-step explanation:

Answer:

The integers are 7 and 3

Step-by-step explanation:

if you put x as smaller number and y as bigger number you can write two equations:

x+y^2=52 and y-4=x

In the first polynomial, y can either equal 7 or -8, but the number has to be positive, so it's 7

y-4 to get x, plug 7 in and you get x=3

y=7 and x=3

Answer:

7 and 3

Step-by-step explanation:

We will let x equal the larger one

y will be the smaller one

We can write the two equations

x-y=4

y+x²=52

We will solve this through substitution

we will take the first equation and add y to moth sides

x=4+y

we then substitute this into our second equation

y+(4+y)²=52

distribute the square

y+8y+y²+16=52

y²+9y-36=0

Factor this

(y-3)(y+12)=0

Which means that y is either 3 or -12 but because it said that both numbers are positive we can reject the negative 12 (which means that y is 3)

Plug in y=3 into our first equation

x-3=4

x=7

Answer:

yes

Step-by-step explanation:

opo