I need someone to check my work..

Step-by-step explanation:

Shortest way to solve this question is to find the factors of the given expression.

The given expression is (x² + 13).

Now we have to factorize it.

(x² + 13) = x² + (√13)²

            = x² + [-(i)²√(13)²]  [Since i = √(-1)]

            = x² - (i√13)²

            = (x - i√3)(x + i√3) [Since (a² - b²) = (a + b)(a - b)]-by-

y² = 8y - 15 (alternate angles are equal)

y² - 8y + 15 = 0

(y - 5)(y - 3) = 0

y = 5 or 3

x + 8y - 15 = 180 (angles in a straight line add up to 180)

when y = 5

x + 40 - 15 = 180

x = 155°

when y = 3

x + 24 - 15 = 180

x = 171°

Answer:

????

Step-by-step explanation:

Answer:

where's the shape

Step-by-step explanation:

what's the length and width, maybe I can help

Answer:

A, sorry if wrong but it can't be b or d

Answer:

hello

Step-by-step explanation:

Answer:

$32.65 is the answer.

Step-by-step explanation:

First, we must calculate 7.25% of 30.45.

30.45 x 0.0725 = $2.20

Now, we must add this to the original price

$30.45 + $2.20 = $32.65

Therefore, $32.65 is the total cost of his purchase.

Hope this helps! :)

Answer:

Step-by-step explanation:

before tax = $30.45

tax sales = 7.25%

total cost = $30.45 x 1.0725

               = $32.66

Answer:

$4867.2

Step-by-step explanation:

Answer:

mutiply everything by 18

-2y=1

y=-1/2

Answer: [tex]x = 9[/tex]

Step-by-step explanation:

[tex]4x=43-7 = 36\\x =36/4 = 9\\x = 9[/tex]

Answer:

Multiply 1/4 six times.

Start from zero and move 1/4 six times.

Product: 1 2/4      Other equivalent fractions: 2/3, 1 4/8, 18/12

Step-by-step explanation:

1.  1/4                      

2. 1/2 (2/4)

3. 3/4

4. one whole (4/4)

5. 5/4 ( 1 1/4)

6. 6/4 ( 1 2/4) (1 1/2)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1. 1/4 + 1/4 = 2/4

2. 2/4 + 1/4 = 3/4

3. 3/4 + 1/4 = 4/4

4. 4/4 + 1/4 = 5/4

5. 5/4 + 1/4 = 6/4

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1/4 times 6.                                      In other ways..  

6/4                                                                    1/4 times 6/1 = 6/4

Answer:

1/8n<3

Step-by-step explanation:

The letter "n" represents the number. Less than or equal to is represented by "<" but with a line under it.

Answer:

1/8n<3

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

hey there,

< 3x-7x = -20-5

-4x = -25

x = [tex]\frac{25}{4}[/tex]

This isn't a square root or anything like that, so you would really only have 1 answer. I'm not sure what your teacher's referring to, though, but maybe they want decimals/mixed fractions?

But I would just put 1 if I were you. >

Hope this helped! Feel free to ask anything else.

Answer:

y=6x-12

Step-by-step explanation:

y2-y1

--------

x2-x1

Answer:

No she should add extra lengths

Step-by-step explanation:

The difference between scaled copy  and jada drawing is that it is in the ratio

8:4

2:1

that is the scaled copy is twice as large as the jada drawing itself.

So every dimension is doubled or made twice as large as the initial measurement. Andre should not add 4 units to all sides instead the drawing is made twice as large . It will serve the same purpose of enlarging the drawing while maintaining its shape. If extra mesurements are added the drawing will be changed.

Answer:

Step-by-step explanation:

a). 3 ...... 8

3 × 8 = 24

3 + 8 = 11

b). n + 1.5 = 6.5 ⇒ n = 5 (across from OR to the left from 1.5)

5 × 1.5 = 7.5 (under the X sign)

Answer:

Point X is the loacation [tex]\pi[/tex], and is an irrational number

Step-by-step explanation:

[tex]\pi[/tex] ≈ 3.14

it is also a irrational number

Answer:

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac {3}{7}}[/tex]

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac {3×3}{7×3}}[/tex]

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac {9}{2}}[/tex]

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac {1}{3}}[/tex]

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac {1×7}{3×7}}[/tex]

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac {7}{21}}[/tex]

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac {9}{21}}\iff {\dfrac {7}{21}}[/tex]

[tex]{:}\leadsto [/tex][tex]\sf {\dfrac{9}{21}} \gt {\dfrac {7}{21}}[/tex]

[tex]\therefore[/tex][tex]\sf {\dfrac {3}{7}} \gt {\dfrac {7}{21}}[/tex]

Answer:

360,000

Step-by-step explanation:

just multiply by 3

Answer:

3,120 second year 3,244.80 the third year.

Step-by-step explanation:

4% of 3,000 is 120

so 3,120 then 3,244.80 the third year after the 4% is compounded

Answer:

the y-intercept is 5 the slope is 3

Step-by-step explanation:

Answer:   9.75

Explanation:

To find your answer, you need to divide 195 by 20, which is 9.75

Answer:

a.2

b.2

c.3x

a.3(x+2)

b.-(2-x)

c.3x-2

Answer:

a.3x+6=3 (x+2)

b.x-2=-(2-x)

15x-10/5=3x-2

Answer:

30%

Step-by-step explanation:

first it's on sale for half off

then u have a coupon for 20%

50%+20%=70%

100%-70%=30%

Answer:

Its b

Step-by-step explanation:

It is going up by 10

Answer:

x = 15

Step-by-step explanation:

7x + 5x = 180 (because parallelograms are 360 degrees)

add like terms

12x = 180

divide 12 from both sides

[x = 15]

Answer:

5x + 10y = 125

Step-by-step explanation:

Let :

Number of nickel = x

Number of dime = y

Nickel = 5 cent

Dime = 10 cent

Total value = $1.25

Total value should be converted to cent since both dime and nickel are both in cent

= $1.25 * 100 = 125 cents

Therefore,

5x + 10y = 125 cents

Answer:

d.

A histogram deals with continuous data in ordered columns, while a bar graph deals with discrete data in separate columns.

Step-by-step explanation:

Answer:

168 is the change in population

Step-by-step explanation:

well if u think about it all u really have to do is take 28×6 and it would help u find the change in population

Answer:

The total change is -168.

Step-by-step explanation:

The deer population changed 6 times, and it decreased by 28 each time, so the equation is:

6 times -28 (because the population is decreasing) = -168

Hope this helps :)

Answer:

15

Step-by-step explanation:

3 counselors for every 20 girls

Answer:

15 counselors

Step-by-step explanation:

The ratio of counselors to girls is 6:40. Set this as a proportion:

[tex]\frac{6}{40}[/tex]=[tex]\frac{x}{100}[/tex]

Cross multiply to solve: 6×100=40x

600=40x

x=15

To satisfy the ratio, there needs to be 15 counselors for 100 girls.