Question 7 of 27
A DEF is a dilation of A ABC by a scale factor of . Which of the following
proportions verifies that A ABC and ADEF are similar?
B
15
12
A 30
9
о
A.
AB
AC
DE
EF
O
B.
AC
DF
O
c.
DE
BC
EF
E PREVIOUS
arch

Answer: 8 3/4

Explanation: Well in order to solve this equation, you must make the denominators equivalent. A common factor between 4 and 5 is 20. But since we multiplied the denominators, we have to do the same to the numerators. 3 x 5 = 15. 1 x 4 = 4. Our new fractions are now 1 15/20 and 4/20. Now that we have made our denominators equivalent, we can divide. 1 15/20 divided by 4/20 is 8 15/20. But we are not done yet, after we must simplify the fraction. Which would be 8 3/4.

Answer:

No

Step-by-step explanation:

3rd option should be changed to "will not".

9514 1404 393

Answer:

Step-by-step explanation:

Whether the offered numbers will satisfy the inequality is more easily seen by solving it for x.

  6 + 3x ≤ 15

  3x ≤ 9 . . . . . . . . . subtract 6 from both sides

  x ≤ 3 . . . . . . . . . . divide by 3

This is "x is less than or equal to three."

  2 is less than 3 so will meet Mari's goal

  3 is equal to 3, so will meet Mari's goal

  4 is not less than or equal to 3, so will not meet Mari's goal

Hey there!

1. How to find f(5)?

2. Substitution and Evaluate

[tex] \large{f(5) = - 4( {5})^{2} + 6(5) - 4}[/tex]

Remember to follow the PEMDAS/BODMAS rules! Exponent comes before multiplication.

[tex] \large{f(5) = - 4(25) + 30 - 4} \\ \large{f(5) = - 100 + 30 - 4} \\ \large{f(5) = - 74}[/tex]

3. Final Answer

If you have any questions regarding the question or my answer, feel free to ask!

Answer:

first one

Step-by-step explanation:

trust me im doing these too

Answer:

1 1/2 I've been doing these

Answer:

rth sdh h trh

Step-by-step explanation:

trh rhgf  

Answer:

AD = 6

Step-by-step explanation:

If a radius is perpendicular to a chord, then it bisects the chord.

Here XB is the radius, AC is the chord. Given XB and AC are perpendicular to each other. Therefore, XB bisects AC at D.

So,

    [tex]AD = \frac{1}{2} \times AC = \frac{1}{2} \times 12 = 6[/tex]

Answer:

13

4

OR  

3

1

4

Step-by-step explanation:

first you work out what is in the brackets

that is  

1

3

÷

1

6

to give you 2 as you answer

second step rewrite the whole question replacing two in the place of  

1

3

÷

1

6

so you will have  

3

4

+

2

−

(

−

1

2

)

thirdly open the brackets with the negative sign outside the bracket that is:  

−

(

−

1

2

)

so that you get  

+

1

2

(or  

1

2

, basically)

lastly rewrite the whole question

so you will have  

3

4

+

2

+

1

2

, you add all of them ...  

3

4

+

8

4

+

2

4

=

13

4

EXTRA

you can keep that solution, or you can change it from improper fraction to a mixed number

if you use long division,  

13

÷

4

=

3

with a remainder of  

1

over  

4

.

doing this by calculator you get 3.25, which is basically  

3

25

100

=

3

1

4

Answer:

4

Step-by-step explanation:

(24+4) ÷ 2 = (24 ÷ 2) + (4 ÷ 2)

28÷2 = 14

Check:

24÷2 = 12

4÷2 = 2

12+2=14

Answer:

The answer is 4.

Step-by-step explanation:

(24 + 4) ÷ 2 = (24 ÷ 2) + (x ÷2)

=28 ÷ 2 = 12 + (x÷2)

14 = 12 + (x ÷ 2)

14 - 12 = x ÷ 2

2 = x ÷ 2

2 × 2 = x

x = 4

Answer:

[tex]\displaystyle d = \sqrt{74}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Algebra Ii

Step-by-step explanation:

Step 1: Define

Find endpoints from graph

Point (-3, -3)

Point (4, 2)

Step 2: Find distance d

Simply plug in the 2 coordinates into the distance formula to find distance d

Answer:

Step-by-step explanation:

tan is the same thing as sin/cos. therefore,

[tex]tan(-\frac{\pi}{2})=\frac{sin(-\frac{\pi}{2}) }{cos(-\frac{\pi}{2}) }[/tex]

[tex]sin(-\frac{\pi}{2})=-1[/tex] and [tex]cos(-\frac{\pi}{2})=0[/tex] so

[tex]tan(-\frac{\pi}{2})=-\frac{1}{0}[/tex] which is undefined. On the graph, this is represented by an asymptote. So your answer is true.

Answer:

Step-by-step explanation:

The answer is true!

Answer:

The parallel sides are called the bases of the trapezoid

Step-by-step explanation:

[tex]area = (\frac{a + b}{2}) \times h[/tex]

       [tex]= \frac{14.1+22.7}{2} \times 18\\\\=331.2 \ unit^2[/tex]

Answer:

331.2 units^2

Step-by-step explanation:

There is a formula for the area of a trapezoid of legs a and b and width h:

a + b

----------- * h

     2

Here the leg lengths (which are parallel) are 14.1 and 22.7, and the width is 18.  Thus, the desired area is

14.1 + 22.7                        36.8

---------------- * 18  =  A  = ------------ * 18 = 331.2 units^2

       2                                   2

The dimension 20.3 is not needed here.

Answer:

[tex]Change = \$36[/tex]

Step-by-step explanation:

Given

See attachment for line plot

[tex]Amount = \$100[/tex]

Required

Determine the change

First, we calculate the amount represented by the line plot

[tex]Amount (Plot) =10+12+12+14+16[/tex]

[tex]Amount (Plot) =64[/tex]

The change from $100 is then calculated as:

[tex]Change = Amount - Amount (Plot)[/tex]

[tex]Change = \$100 -\$64[/tex]

[tex]Change = \$36[/tex]

Answer:

I guess D is the correct answer.

Answer:

The value of f(9) is equal to 498.

Step-by-step explanation:

Given that,

f(x) = 6x²+12

We need to find the value of x(9).

Put x = 9 in the given function.

f(9) = 6(9)²+12

f(9) = 498

So, the value of f(9) is equal to 498.

Answer:

the expanded form of (a^2-b^2)^2 is a⁴-b⁴

Answer:

[tex]( {a}^{2} - {b}^{2} ) {}^{2} \\ {a}^{4} - {b}^{4} [/tex]

Answer:

y < -19/2

Step-by-step explanation:

-18 - 4y > 20

Add 18 to each side

-18+18 - 4y > 20+18

-4y > 38

Divide each side by -4, remembering to flip the inequality

-4y/-4 < 38/-4

y < -19/2

Answer:

y < -9.5

Step-by-step explanation:

-18 - 4y > 20

Add 18 to both sides of the inequality.

-18 + 18 - 4y > 20 + 18

Add -18 + 18 which gets you 0.

0 - 4y > 20 + 18

Subtract 0 - 4y which gets you -4y.

-4y > 20 + 18

Add 20 + 18 to get 38.

-4y > 38

Divide both sides by -4 and change the inequality direction.

y < 38/-4

Cancel out 2 as a common factor from 38/-4.

y < 19/-2

Divide 19 / -2 which gets you -9.5.

-9.5

They are the same amount.

Answer:

4x -3y

Step-by-step explanation:

Answer:

Step-by-step explanation:

Since there is no single number we can add to one number in the sequence to get to the next one, this is not arithmetic. That means it's geometric, if it's a sequence at all. To get from 2 to 6 we multiply by 3. To get from 6 to 18 we multiply by 3. To get from 18 to 54 we multiply by 3. Therefore, this is in fact geometric and the common ratio is 3. The standard form of a geometric explicit formula is

[tex]A_n=a_1(r)^{n-1[/tex] where n is the position of a number in the sequence, a1 is the first number in the sequence, and r is the common ratio. We have then

a1 = 2 and r = 3. Therefore, the explicit formula is

[tex]A_n=2(3)^{n-1[/tex] and you can use this to find the value of any number in the sequence. Very handy; much more so than the recursive formula, which requires that all the numbers in a sequence be found in order in order to get to a desired value.

Both equations represent straight lines

The first line has slope of 2 and y-intercept at -3

The second line gas slope of 2 and y-interceot at +3

you may now try to plot these two lines on the paper

Answer:

[tex]\sqrt[3]{x^2}[/tex]

Step-by-step explanation:

x ^ (5/6)   / x ^ (1/6)

We know that a ^b  / a^ c = a^ (b-c)

x^ ( 5/6 - 1/6)

x^ (4/6)

x^ ( 2/3)

[tex]\sqrt[3]{x^2}[/tex]

Answer:

3 + 9 ÷ (9 - 6)

Step-by-step explanation:

3 + 9 ÷ (9 - 6) = 3 + 9 ÷ 3 = 3 + 3 = 6

Answer: $1.75

Steps: 30%=0.3

0.3 x 2.50 = 0.75

2.50 - 0.75 = 1.75

Answer:

Hey Natalia,

I suppose A is just what is on the left and B what 8s on the right

so for 5) it would be

A = 6

and

B = 3

Answer:218 degrees

Step-by-step explanation:c

Answer:

no because the box needs to be at least 35 inches long and the box the mother found is only 32 inches long.

Answer:

Use the referent of an adult stride (about 1 yard) to measure the dimensions of the area that will be covered by sod. Use the dimensions to calculate the area in square yards.

Step-by-step explanation:

This seems to be a relatively vague question, but it was requested so I'll try my best.

There's practically no way to accurately measure the area to be covered by sod without using a reference. I couldn't help but notice the list of references above the question, and I presume they are correlated. Since the length of an adult stride is 1 yard, you can use an adult stride as a reference to relatively accurately measure the dimensions of the area that needs to be covered. The method to find the area varies with the shape of the area, but assuming you can accurately find the area, this is a plausible way to estimate the area needed to be covered by sod. As an alternative, since the question stipulates sod can only be purchased in square yards or square meters, you can use a doorway (about 2 meters) in the list of references above the question to also measure the dimensions of the area. This is less practical because an adult stride is more mobile than a door.

Answer:

30 parts of red paint

Step-by-step explanation:

9 white-5red

54white-x

(54×5)/9=30