Sam can clean his room in 3 hours. His sister, Susan, can clean his room in 2 hours. How long will it take them to clean the room working together?


This is a rational equation problem

Answer:

v = 22.5 miles/hour

Step-by-step explanation:

It is given that,

The speed of Penguins is 33 ft/s.

We need to convert the speed to miles per hour.

We know that, 1 mile = 5280 feet

Speed,

[tex]v=33\ \dfrac{ft}{s}\\\\=33\times \dfrac{\dfrac{1}{5280}\ \text{miles}}{\dfrac{1}{3600}\ \text{hour}}\\\\=22.5\ \text{miles/hour}[/tex]

So, the speed of the Penguins is 22.5 miles/hour.

Answer:x=6

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

The given equation is linear with two variables that will have zero solutions.

A system of equations, also known as an equation system or a set of simultaneous equations, is a finite set of equations for which common solutions are sought.

Given equation is x + 2y = 8. The equation is a linear equation with two variables. If the equation will have another equation then the solution will have two values for two variables.

If there is only one equation with two variables we will not get any solution we need one more same equation. The equation will have zero solution.

Therefore, the given equation is linear with two variables that will have zero solutions.

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Answer:

40

Step-by-step explanation:

50 x (4/5) = 50 x 4 =200/5=40

Answer:

aba mag solve kayo mag puro tanong samin

Answer:

3 cm : 1 cm

Step-by-step explanation:

1. 60 : 20

2. divide 10 on both sides = 6 : 2

3. divide by 2 on both sides = 3 : 1

4. 3 cm : 1 cm

I'm so sorry, I just read the ratio is 60 cm to 20 M

So edit:

convert both into a unit, we'll take m.

1 cm = 100 m

so 60 x 100 = 60000 m

= 60000 m : 20 m

= divide by 20 in both sides...

= 3000 m : 1 m

Answer:

7(3x-2)=133

x=7

Step-by-step explanation:

distribute the 7 which gives you 21x-14=133

the add 14 to both side making it 21x=147

finally divide 21 to both sides giving you x=7

Answer:

its basically -4 divided by 2 which is 2

Step-by-step explanation:

Answer:6.66

Step-by-step explanation:

Answer:

45 pages of notes

Step-by-step explanation:

34+11=45

Answer:

b.

Step-by-step explanation:

The equivalent expression is: -2x + 10. therefore the correct option is C.

Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.

To derive equivalent expressions of some expression, we can either make it look more complex or simple. Usually, we simplify it.

From the distributive property;

-2(x - 5)

Then, multiply -2 and -5

-2 * x = -2x

-2 * -5 = 10

because two negatives make a positive

Therefore the answer would be -2x+10.

Hence,The equivalent expression is: -2x + 10. therefore the correct option is C.

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Step-by-step explanation:

take 48 and divide it by 5/6 on a calculator

Answer:

33% decrease

Step-by-step explanation:

40/60 = 66.66% and then what ever is left over is how much it decreased by

Answer: just plug these into a calculator to find the simplified answers

Answer: 3 x 13 is 39

Step-by-step explanation:

you can use the distributive property by breaking it up into smaller parts and adding for example (6+7) + (13+6) +7

Answer: 3 x 13 is 39

Step-by-step explanation:

you can use the distributive property by breaking it up into smaller parts and adding for example (6+7) + (13+6) +7

Answer:

B!!!!

Step-by-step explanation:

It is B because

X is the students.

Y for teachers.

the total of tickets sold are 530.

it can't be C because they switch the 3 and 4, so sorry.

Answer:

10

Step-by-step explanation:

When we subtract a negative number, it's basically a double negative, kind of like how we don't use those in English. We want to turn that into a positive, and double negatives are positive.

So, instead of 7-(-3), we get 7+3, or 10

Answer:

10

Step-by-step explanation:

[remember: (+)(+) is (+) itself , (+)(-) is (-) , (-)(-) is (+) ]

(+7)-(-3)

⇒ +7+3

⇒ 10

hope you understood❤

Answer:

$105.22

Step-by-step explanation:

$123.79 * 0.15 = $18.5685

That is not how you write money, so we round to $18.57

Subtract that from $123.79 and you get $105.22

I hope this helped, please mark Brainliest, thank you!

Answer:

14 is +1

15 is -9

Step-by-step explanation:

Answer: AAS. Some people use SAA.

Step-by-step explanation: LM congruent to JK using given. <MLJ congruent to <JKM using given...The last one is using VAT(I can’t find the angle there. Hope this helps!

Answer:

Step-by-step explanation:

[tex]5x - 26 =x +50[/tex]

Collect like terms and simplify

[tex]5x-x =50+26\\\\4x = 76[/tex]

Divide both sides of the equation by 4

[tex]\frac{4x}{4} = \frac{76}{4}[/tex]

Simplify

[tex]x=19[/tex]

Answer:

uygtycyniuhuy

Step-by-step explanation:

the ratio of the p is  31.5  and the area is 80 correct me if im wrong but if u need any help im always here :)

Answer:

y=150x+200

Step-by-step explanation:

Given that:

Week : ____ 0___ 1 ___ 2 ____3 _____4

Balance : __200_350 _ 500 _ 650 ___800

Amount had in savings account = $200 before starting the job

x = number of weeks spent working

y = account balance

Slope intercept formula :

y = mx + c

C = intercept ; value of y when x = 0 = 200

m = slope or gradient = change in salary per month (350 - 200 = 500 - 350 = 650 - 500 = 800 - 650 = 150

Hence,

y = 150x + 200

Answer:

Step-by-step explanation:

A