1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inysia [295]
3 years ago
13

Steve is a painter. He can paint a house in 20 hours. It takes his assistant 30 hours to paint a house. How long, in hours, woul

d it take them to paint a house working together?
Mathematics
2 answers:
padilas [110]3 years ago
8 0
I think the answer is  15 Hours<span />
vitfil [10]3 years ago
4 0

The correct answer is D. 12.


You might be interested in
HELP ASAP!!!!<br> Does someone mind walking me through this. I really need help.
Tamiku [17]
The minimum of this graph is the focus of the parabola. I'm not sure with the maximum though but I think it doesn't have a maximum because the y value of the parabola will extend infinitely upward.
7 0
4 years ago
Write the given phrase as an algebraic expression. Use the variable x to represent the unknown number.
Alchen [17]
Hello! I would love to help!

Let's start with this part of the equation: "the sum of a number and seven"

Alright. We know that x represents an unknown number. Do you see a part of the equation that could translate to "an unknown number?"

I see "a number." So let's fill X in for "a number.

Alright. So now we have "the sum of x and 7."

Next, let's remember that sum means adding. So we just need to 7 to x

X+7


So, now instead of "the sum of a number and 7" we have x+7.

Alright. Now we just have to do the "twice." When it is asking for "twice", it is asking us to multiply our answer by two. But we need to multiply both x and 7. The best way to do that is to put our "x+7" in parenthesis and put a two outside.

2(x+7)


That's your answer! 2(x+7)


Hope this helped! Comment if you have any questions!
5 0
3 years ago
Someone please tell me the answers to this please I beg you
Wittaler [7]
1) 216
2) 203
3) 315
4) 256
5) 576
6) 440
7 0
3 years ago
Can someone please help me
PtichkaEL [24]

Answer:

The size is 37.5 degrees

Step-by-step explanation:

The total angle in the triangle is 180

Since the other two angles are congruent. it means that they are equal

Let us call each of the angles x

Mathematically,

x + x + 105 = 180

2x = 180-105

2x = 75

x = 75/2

x = 37.5

7 0
3 years ago
riangle ABC is an obtuse triangle with the obtuse angle at vertex B. Angle A must be less than 90°. greater than 90°. congruent
Softa [21]
Angle A must be less than 90<span>°</span>
5 0
3 years ago
Other questions:
  • Past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they​ buy?
    7·1 answer
  • The first soccer team scored 8 goals in 4 games. The second soccer team scored 27 goals in 9 games. Which soccer team scored mor
    6·2 answers
  • 50 is 90% of what plz help
    9·1 answer
  • Mae uses a device to measure the temperature of a solution. Due to a fault in the device, the measured temperature varies by as
    9·1 answer
  • A single year on Saturn is equal to 29.4 years on earth. About how many earth years are equal to 3.2 years on Saturn
    6·1 answer
  • How do you solve a=a+b+c/3
    15·1 answer
  • Two sides of a triangle have sides 11 and 16. The length of the third side must be greater than
    9·1 answer
  • What trig function would I use to solve for x?
    9·1 answer
  • Guys hi am i correct ??
    13·1 answer
  • Calcule a medida da altura da cachoeira do Aracá, da torre Eiffel e da torre CN,
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!