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3 years ago

Is this correct? help please

Mathematics

2 answers:

Drupady [299]3 years ago

7 0

Yes! That graph matches the equation

AlekseyPX3 years ago

3 0

Answer:

yes

Step-by-step explanation:

y = -4/3x + 8 so you would multiply - 4/3 * x. Then you would add 8 to your answer and if the y value equals the value on the graph then it's correct.

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What is real world problem that can be solved by using the equation 5x = 45

Harrizon [31]

You have 5 apples, together they cost 45 dollars, how much does each apple cost.

5x/5
45/5

x=9

8 0

3 years ago

How to slove - Tan x°= 1.11 and what is the answer?

jarptica [38.1K]

$\bf tan(x^o)=1.11\impliedby \textit{taking }tan^{-1}\textit{ to both sides}
\\\\\\
tan^{-1}[tan(x^o)]=tan^{-1}(1.11)\implies \measuredangle x=tan^{-1}(1.11)$

plug that in your calculator, make sure the calculator is in Degree mode

5 0

3 years ago

Solve using square root method

avanturin [10]

$\frac{1}{2}(x+5)^2 + 9 = -15$

$\frac{(x+5)^2+18}{2} = \frac{-30}{2}$

Cancel out the denominators.

(x+5)² + 18 = -30

(x+5)² = -30 - 18

(x+5)² = -48

The equation is impossible, we have a negative number.

There isn't a number that squared gives a negative number (the square is always positive).

√(x+5)² = +/- √-48

x+5 = +/- √-48

IMPOSSIBLE

You can write the result in imaginary numbers

x+5=+/- 4i√3

6 0

2 years ago

Which is the solution to the system of equations? y=−3/2x−11/2; 6x+y=−4

cupoosta [38]

Answer:

x= 1/3 and y=−6

Step-by-step explanation:

If you want step by step explanation you can get your explanation from

https://www.mathpapa.com And just type that answer in where it says what do you want to calculate? type it in that box and it give you step by step but i gave you the answer up top you just need the explanation the explanation is hard to type in here that's why i have you that website :)

4 0

2 years ago

If you flip a fair coin 7 times, what is the probability that you will get exactly 4 tails?

andre [41]

Probability that you will get exactly 4 tails, if you flip a fair coin 7 times is: $\frac{35}{128}$

Step-by-step explanation:

We need to find the probability that you will get exactly 4 tails, if you flip a fair coin 7 times.

This is the combination question.

The total combinations will be: 2^7=128

Now, finding number of ways we can get exactly 4 tiles:

We will use the formula:

$^nC_k=\frac{n!}{k!(n-k)!}$

in our given question, n= 7, k= 4

Putting values:

$^nC_k=\frac{n!}{k!(n-k)!}\\^7C_4=\frac{7!}{4!*3!}\\ ^7C_4=\frac{7*6*5*4!}{4!*3!}\\ ^7C_4=\frac{7*6*5}{6}\\ ^7C_4=35$

So, Probability that you will get exactly 4 tails, if you flip a fair coin 7 times is: $\frac{35}{128}$

Keywords: Probability

Learn more about Probability at:

#learnwithBrainly

7 0

3 years ago