Which one doesn't belong and why?

Answer:

Pemba is 20 and her sister 15

Step-by-step explanation:

Let the sisters age be x. As pemba is five years older, her age is x+5.

Now, the sum of their ages is 135. So, by combining the two ages we get:

=>X+(x+5)=35

x+x+5=30

2x=30

x = 15

Then, substitituing this value of x into our equations for the ages of the sisters we get

sisters age 15 years old

Pemba age (15)+5=20 years old

Answer:

last answer

Step-by-step explanation:

I factored it, but I might have done it wrong.

Answer:

31.42 in

Step-by-step explanation:

C=πd=π·10≈31.41593in

Answer:

C

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

Where's the x?

I am assuming that the problem must be

-3 + 42 > 3x

if that is true, then

x < 13.

As this statement is, -3 + 42 > 3 is a true statement because -3 + 42 = 39, and

39 > 3 [39 is always greater than 3]

Step-by-step explanation:

Let me know if you need a step by step.

Answer:

D) x < -15

Step-by-step explanation:

-3x - 42 >3

Add 42 to each side

-3x - 42+42 >3+42

-3x > 45

Divide each side by -3.  Remember to flip the inequality since we are dividing by a negative

-3x/-3 < 45/-3

x < -15

not really sure how you want this solved but the equation itself is true

On the second day 28 people will have received the email.

To determine the expression that graphs this situation and determine the number of people who will have received the e-mail, the following calculation must be made:

Thus, if the email is forwarded two days in a row, this formula operates as follows:

Therefore, on the second day 28 people will have received the email.

Learn more about exponential functions in https://brainly.com/question/15352175

Answer:

y2=3

Step-by-step explanation:

4y2+7=19

Subtract 7 from both sides.

4y  2 =19−7

Subtract 7 from 19 to get 12.

4y2=12

Divide both sides by 4.

y2= 12/4

Divide 12 by 4 to get 3.

y2=3

​  

Answer:

4y2 + 7 = 19

Step-by-step explanation:

4y2 =19-7

4y2=12

4yx2=12

8y=12

dbs by 8

y=1.5 or 2

Answer: Length = l

Width = w

2l + 2w = 80cm

l+w = 40cm

l = w+4

w+4 + w = 40cm

2w + 4 = 40cm

2w = 36cm

w = 18cm

l = 22cm

jd3sp4o0

Step-by-step explanation:

Answer:

L = 22, W= 18

Step-by-step explanation:

You can use an equation to solve this. Since the length is 4 more than the width, you can use L = W + 4. (L = Length, W = Width). I personally like to draw a diagram to figure out the total sides. We can add up all the sides, using our equations and adding common factors. We know the perimeter is 80 cm, so we can equal it to this. Solve for W. And finally subsitute for L.

There is a circle with the center [tex](6,-8)[/tex] and radius = [tex]20[/tex] units

We have to find whether the points given in the options will not lie inside the circle if the radius of the circle is halved.

"If a point lies inside the circle, distance between the center and the given point will be less than the radius of the circle".

To find the distance between two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is given by,

Distance = [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

If a point lies inside the circle with radius 10 units, distance between the point and the center will be less than 10 units.

Option A

Distance between the points [tex](-\frac{1}{20},0)[/tex] and [tex](6, -8)[/tex]

= [tex]\sqrt{(6+\frac{1}{20})^2+(-8-0)^2}[/tex]

= [tex]\sqrt{100.6025}[/tex]

= [tex]10.03[/tex] units

Since, [tex]10.03>10[/tex] units

Therefore, [tex](-\frac{1}{20},0)[/tex] will lie outside the circle.

Option B

Distance between [tex](\frac{1}{20},0)[/tex] and [tex](6,-8)[/tex] = [tex]\sqrt{(6-\frac{1}{20})^2+(-8-0)^2}[/tex]

                                                            = [tex]\sqrt{99.4025}[/tex]

                                                            = [tex]9.97[/tex] units

Since, [tex]9.97<10[/tex] units

Therefore, [tex](\frac{1}{20},0)[/tex] will lie inside the circle.

Option C

Distance between [tex](-\frac{1}{10},-6)[/tex] and [tex](6,-8)[/tex] = [tex]\sqrt{(6+\frac{1}{10})^2+(-6+8)^2}[/tex]

                                                                 = [tex]\sqrt{41.21}[/tex]

                                                                 = [tex]6.42[/tex] units

Since, [tex]6.42<10[/tex] units

Therefore, [tex](-\frac{1}{10},-6)[/tex] will lie inside the circle.

Option D

Distance between [tex](8,10)[/tex] and [tex](6,-8)[/tex] = [tex]\sqrt{(8-6)^2+(10+8)^2}[/tex]

                                                            = [tex]\sqrt{328}[/tex]

                                                            = [tex]18.11[/tex] units

Since, [tex]18.11>10[/tex] units

Therefore, [tex](8, 10)[/tex] will lie outside the circle.

Now we can conclude that [tex](-\frac{1}{20},0)[/tex] and [tex](8,10)[/tex] will lie outside the circle.

Options (A) and (D) will be the correct options.

Learn more about the distance between two points,

https://brainly.com/question/3716231

Answer:

9x+7y

Step-by-step explanation:

please see the image that I have attached

Hey there!

The simplified expression is 3x + 7y

To simplify this, we must add like terms. We can use the Commutative Property of addition to move the like terms together:

7x - x + 3x + 5y + 2y

Now, we can use the Associative Property to group the numbers:

(7x - x + 3x) + (5y +2y)

Now, we add the terms in the parentheses:

3x + 7y

Hope it helps and have a great day!!!

Answer:

7 cookies

Step-by-step explanation:

9.90/18 is 0.55, so each cookie is 55 cents. 3.85/0.55 is 7, so you can buy 7 cookies.

Answer:

15 (D)

Step-by-step explanation:

There are 3 15s

it comes up the most

Answer:

Explanation:

15 is the mode because it is shown many times.

Answer:

0/21 or 0%

Step-by-step explanation:

There are no purple bows and 21 other bows.

Answer:

0/21 or 0%

Step-by-step explanation:

do this step by step.

16 X 1.75

- since there is 75% more.

= 28 songs --> in total.

28 X 0.25

-- since 75% are removed.

= 7

final answer: 7 songs.

Answer:

6+y [tex]\geq[/tex] -23

Step-by-step explanation:

Just write it out.

Answer:

A i think im 98% sure

Step-by-step explanation:

Statement                        |   Reason

AD = DC                           |   given

AB = CB                           |    given

BD = DB                           |   reflexive property

ABD = CDB                      |    side-side-side congruency theorem

Answer:

2/5y and -0.2y

-6 and -2

Step-by-step explanation:

Here, we want to select the pair of like terms

To do this, we finish the evaluation of the expression

2/5y + 1/5x - 0.2y -6+ (-2)

We have the two y’s together

2/5y and -0.2y

-6 and -2

Answer:

So then it was a Score of 85

Step-by-step explanation:

Answer: 4  ≥ x

Step-by-step explanation:

We want to solve the inequality

2*x + 5 ≥ 3*x + 1

We can solve it in the same way as a normal equation, we need to isolate x in one side of the equation.

I will isolate x in the right side.

2*x + 5 ≥ 3*x + 1

First, we subtract 2*x in both sides:

(2*x + 5) - 2*x  ≥ 3*x + 1 - 2*x

5 ≥ x + 1

Now we subtract 1 in both sides:

5 - 1 ≥ x + 1 - 1

4  ≥ x

Answer:

1000

Step-by-step explanation:

Answer:

Step-by-step explanation:

The point-slope form of the equation of a line: y - y₁ = m(x - x₁), where m is the slope and (x₁, y₁) is the point the line passing through.

m = ²/₃

(-5, 6)    ⇒    x₁ = -5,  y₁ = 6

So the point-slope form of the equation:

                                                                   y - 6 = ²/₃(x - (-5))      

                                                           or:    y - 6 = ²/₃(x + 5)

The accurate angle relationships are (b) <1 = <3 and <4 = <6

When a transversal cuts through parallel lines, it forms pairs of congruent angles that are related by several relationships.

From the parallel lines l and m, we have the following angles:

Angle 1 = Angle 3

Angle 4 = Angle 6

Hence, the accurate angle relationships are (b) <1 = <3 and <4 = <6

Read more about parallel lines at:

https://brainly.com/question/24607467

Answer:

14.6 km

Step-by-step explanation:

Answer:

multiplication over addition

Step-by-step explanation:

I think soo bro. but do you need the answer too

Answer:

Distributive Property because of the formula

Answer:(-5,3)

Step-by-step explanation:

Answer:

the answer is (5,3)

Step-by-step explanation:

because I did this question already

Answer:

x=-7

Step-by-step explanation: