Tisha tried to evaluate an expression. Here is her work: 490÷729–23 = 490÷499–23 Step 1 = 109–23 Step 2 = 90–23 Step 3 = 883 Step 4 = 264 Step 5 Is Tisha's work correct?

Answer

Option 2, 4 and 5 :)

Step-by-step explanation:

Option 2 is already simplified to 20x + 30y

Option 4,

10*2x=20x and 10*3y= 30y so option 4 also simplifies to 20x + 30y

Next Option 5, 10*2x= 20x and 10*3y=30y. So it's also 20x + 30y

Answer:

2<7

Step-by-step explanation:

-7<=-2

-7+9<-2+9

2<7

Answer:

15

.......................

Answer:

600

Step-by-step explanation:

100 centimeter in 1 meter

the answer is six hundred

Answer:

Your answer is

1.5<XZ<18.5

Hope that this is helpful. Tap the crown button, Like & Follow me

Answer:

about 38.48 square feet

Answer:

-2(7) + -2(5g)

Step-by-step explanation:

Using the distributive property we can confirm that:

-2(7) + -2(5g) = -2(7+5g)

Answer:

−14−10g

Step-by-step explanation:

First, solve the product:

-2 ⋅ 7 - 2 ⋅ 5g

Multiply -2 times 7 to -14.

So, the equivalent expression would be:

-14 - 2 ⋅ 5g = -14 - 10g

-14 - 10g

Step-by-step explanation:

Im supposing this is a rectangle with length of 20 and width of 24, so... area is equal to lenth by width, so A=L*W or A=20*24 so the area is 480 square feet

Answer:

one solution

Step-by-step explanation:

2( 4 + 1 0 ) = 8 +2 0   = 2 8 + 2 0

Subtract  

from both sides of the equation

Simplify  

Subtract  8  from both sides of the equation

Simplify

Divide both sides of the equation by the same term

Simplify

Solution   = − 5 /2

Answer:

This would be Answer C

Step-by-step explanation:

In the graph It shows you what percentage chose navy blue.

Answer:

3x + 75 + 90 = 180

x = 5°

Step-by-step explanation:

3x + 75° + 90° = 180°( being sum of angles of triangle)

3x = 180° - 75°- 90°

3x = 15°

x = 15° / 3

x = 5°

Answer:

2

Step-by-step explanation:

Big Brain

Answer:

2

Step-by-step explanation:

The coefficient is the number without X and its exponent

9514 1404 393

Answer:

  (d)  scale factor 1/2; center: the origin

Step-by-step explanation:

Consider point B(2, 6). That gets dilated to make point D(1, 3). These coordinates are different, so the center of dilation is not point B. The ratios of the coordinates of D to B are 1/2 and 3/6 = 1/2. This is the scale factor k. (The coordinates of other corresponding points also have the same ratio.)

  k = 1/2; dilation center: the origin

Answer:

20x^2−2x−6

Step-by-step explanation:

(4x+2)(5x+−3)

=(4x)(5x)+(4x)(−3)+(2)(5x)+(2)(−3)

=20x2−12x+10x−6

=20x2−2x−6

Answer:

4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

(16 - 2*2*2)/ (12-5*2)

(16 - 8)/(12-10)

8/2

4

Sorry, if this doesn't help.

9514 1404 393

Answer:

  D)  infinitely many

Step-by-step explanation:

There are infinitely many points on any portion of the number line. The shading on the graph indicates all numbers less than or equal to 8 are solutions. There are infinitely many such numbers.

Answer:

x=50

Step-by-step explanation:

40+65+25+x=180

Combine like terms

130+x=180

x=50

(triangles = 180)

Answer:

25

Step-by-step explanation:

do 60 and multipy it by 5 then 5/12

and turn it into a proper fraction

Answer:

25

Step-by-step explanation:

60 × [tex]\frac{5}{12}[/tex] = [tex]\frac{300}{12}[/tex]= 25

Answer:

D) 12

Step-by-step explanation:

7 + 4 + 1 = 12

Hope that helps!

-scsb17hm

Answer:7

Step-by-step explanation:

in the pledges table on 40-49 7 people recieved more that 39 pledes

Answer:

[tex]A=2833.71\ cm^2[/tex]

Step-by-step explanation:

Given that,

The height of the cylinder, h = 30 cm

The radius of the cylinder, r = 11 cm

We need to find the total surface area of the cylinder. The formula for the total surface area of the cylinder is given by :

[tex]A=2\pi rh+2\pi r^2\\\\A=2\pi \times 11\times 30+2\pi \times (11)^2\\\\A=2833.71\ cm^2[/tex]

So, the total surface area of the cylinder is [tex]2833.71\ cm^2[/tex].

Answer:

a,b,d

Step-by-step explanation:  jusrt the answer, take my word u totally wont fail lol

The equivalent value of the expressions are solved by the exponents

When you raise a quotient to a power you raise both the numerator and the denominator to the power. When you raise a number to a zero power you'll always get 1. Negative exponents are the reciprocals of the positive exponents.

The different Laws of exponents are:

mᵃ×mᵇ = mᵃ⁺ᵇ

mᵃ / mᵇ = mᵃ⁻ᵇ

( mᵃ )ᵇ = mᵃᵇ

mᵃ / nᵃ = ( m / n )ᵃ

m⁰ = 1

m⁻ᵃ = ( 1 / mᵃ )

Given data ,

Let the exponential equation be represented as A

Now , the value of A is

A = 25ˣ

On simplifying , we get

A = ( 5 . 5 )ˣ

A = ( 25 )ˣ

And , A = 5ˣ . 5ˣ

From the laws of exponents , we get

mᵃ×mᵇ = mᵃ⁺ᵇ

A = 5²ˣ

A = 25ˣ

Hence , the expressions are ( 5 . 5 )ˣ = 5²ˣ = 5ˣ . 5ˣ = 25ˣ

To learn more about exponents click :

https://brainly.com/question/28966438

#SPJ7

The complete question is attached below :

Which expressions are equivalent to the one below? Check all that apply.

25ˣ

Solution :

We have to find the largest fraction in each group.

a). [tex]$\frac{5}{6}$[/tex] and [tex]$\frac{29}{36}$[/tex]

    [tex]$\frac{5}{6}$[/tex]  →  when we divide the number 5 with 6, we get 0.833

    [tex]$\frac{29}{36}$[/tex] → when we divide 29 by 36, we get the value 0.805

Therefore, in this group, [tex]$\frac{5}{6}$[/tex] is the largest fraction.

b).  [tex]$\frac{5}{12}$[/tex] and [tex]$\frac{3}{8}$[/tex]

     [tex]$\frac{5}{12}$[/tex]  →  when we divide the number 5 with 12, we get 0.416

    [tex]$\frac{3}{8}$[/tex] → when we divide 3 by 8, we get the value 0.375

Therefore, in this group, [tex]$\frac{5}{12}$[/tex] is the largest fraction.

c).  [tex]$\frac{2}{5}$[/tex] and [tex]$\frac{19}{45}$[/tex]

     [tex]$\frac{2}{5}$[/tex] →  when we divide the number 2 with 5, we get 0.40

    [tex]$\frac{19}{45}$[/tex] → when we divide 19 by 45, we get the value 0.42

Therefore, in this group, [tex]$\frac{19}{45}$[/tex] is the largest fraction.

d).  [tex]$\frac{5}{7}$[/tex], [tex]$\frac{13}{14}$[/tex] and  [tex]$\frac{19}{21}$[/tex]

      [tex]$\frac{5}{7}$[/tex] →  when we divide the number 5 with 7, we get 0.714

    [tex]$\frac{13}{14}$[/tex] → when we divide 13 by 14, we get the value 0.928

    [tex]$\frac{19}{21}$[/tex]  → when we divide 19 by 21, we get the value 0.904

Therefore, in this group, [tex]$\frac{13}{14}$[/tex]  is the largest fraction.

Answer:<DBE+<DBA+<EBC=180(SUM OF INTERIOR ANGLE OF A TRIANGLE is 180)

<DBE+39+53=180

<DBE=180-92=88

88 is the answer. it helps you.

Answer:

88 \

Step-by-step explanation:

Step-by-step explanation:

$ 3.15 each pendents .......

Given:

The equation is

[tex]x^2+(2\sqrt{5})+2x=-10[/tex]

To find:

The number of roots and discriminant of the given equation.

Solution:

We have,

[tex]x^2+(2\sqrt{5})x+2x=-10[/tex]

The highest degree of given equation is 2. So, the number of roots is also 2.

It can be written as

[tex]x^2+(2\sqrt{5}+2)x+10=0[/tex]

Here, [tex]a=1, b=(2\sqrt{5}+2), c=10[/tex].

Discriminant of the given equation is

[tex]D=b^2-4ac[/tex]

[tex]D=(2\sqrt{5}+2)^2-4(1)(10)[/tex]

[tex]D=20+8\sqrt{5}+4-40[/tex]

[tex]D=8\sqrt{5}-16[/tex]

[tex]D\approx 1.89>0[/tex]

Since discriminant is [tex]8\sqrt{5}-16\approx 1.89[/tex], which is greater than 0, therefore, the given equation has two distinct real roots.

Answer:

D

Step-by-step explanation:

that's the answer becouse other words are small

Answer:

a) x = 34

b) yes, it checks out

Step-by-step explanation:

2x - 5 = 3(4 + 1/2x)

multiply both sides by 2 to eliminate fraction

2[2x - 5 = 3(4 + 1/2x)] = 4x - 10 = 24 + 3x

x - 10 = 24

x = 34

check

2(34) - 5 = 3(4 + 34/2)

68 - 5 = 3(4 + 17)

63 = 3(21)

63 = 63