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Fudgin [204]
3 years ago
15

Please help ill give brainliest

Mathematics
2 answers:
sweet [91]3 years ago
7 0

Answer:

D

Step-by-step explanation:

it is the only one that is correct

quester [9]3 years ago
4 0
The answer is c because you need to add 4 to both sides to cancel it out. Then you divide by 7 on both sides to get x by itself and reveal the answer.
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Simplify the expression 4•3+4•x
r-ruslan [8.4K]

Answer:

4x+12

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Alison is learning how to walk. 50% of the time that she takes a step she falls down. Her older brother wants to design a simula
MissTica

Answer with explanation:

Alison is learning how to walk.50% of times she takes a step she falls down.

Probability of falling down in next step =\frac{50}{100}=\frac{1}{2}

Probability of not falling down in next step =\frac{50}{100}=\frac{1}{2}

From ,the four option given,we have to find the best simulation which her older brother wants to design a simulation to find the probability that she will fall down 5 out of the next 7 times she tries to take step.

While Simulating the Probability of falling down should be =\frac{5}{7}

And , probability of not falling down1-\frac{5}{7}=\frac{2}{7}

→→⇒F=Falling, NF=Non Falling

A) Roll a die letting 1 represent Alison falling and 2-6 represent Alison not falling. Roll the die five times.

P(F)=\frac{1}{6},P(NF)=\frac{5}{6}

Incorrect option,probabilities of falling and non falling does not match with Actual probability of falling and non falling.  

B) Roll a die letting 1 represent Alison falling and 2-6 represent Alison not falling. Roll the die seven times.

P(F)=\frac{1}{6},P(NF)=\frac{5}{6}

Incorrect option,probabilities of falling and non falling does not match with Actual probability of falling and non falling.

C) Let Heads represent Alison falling down and Tails representing Alison not falling down. Flip the coin five times.

P(F)=\frac{1}{2},P(NF)=\frac{1}{2}

Simulation is done only five times , that is coin has been flipped only five times.it must have been flipped seven times.Incorrect option.  

D) Let Heads represent Alison falling down and Tails representing Alison not falling down. Flip the coin seven times.

P(F)=\frac{1}{2},P(NF)=\frac{1}{2}

Simulation is done seven times , that is coin has been flipped seven times.So,she should fall 5 times that is head should appear 5 out of seven times, and tail should appear 2 out of seven times.correct option.

Option D

4 0
3 years ago
Read 2 more answers
Which inequality best represents that ice cream at −2°C is cooler than ice cream at 3°C? Group of answer choices −3°C > 2°C −
ollegr [7]

Answer:

3°C > - 2°C

Step-by-step explanation:

Ice cream 1 = - 2°C

Ice cream 2 = 3°C

Lower temperatures are colder (cooler) than higher temperature values.

Hence, ice cream at - 2°C is cooler than ice cream at 3°C.

Hence, a temperature of 3°C is higher (greater) than - 2°C. Hence - 2°C is cooler (colder) than 3°C

Hence,

3°C > - 2°C

5 0
2 years ago
A rectangular goat pen is 7 meters long and 4 meters wide. What is it's area?
Burka [1]

Answer:

28

Step-by-step explanation:

7 0
2 years ago
Consider the system of equations y= -2 + 4, 3y+x=-3 which statement is true of the system of equations
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3x-4y+2 hahahaha its not me pep perillp ie eewewr its jwghvjbe rijwte ru
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