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
natali 33 [55]
2 years ago
8

Which of the given values is a solution to the equation −11=5t−9

Mathematics
2 answers:
mars1129 [50]2 years ago
7 0

Answer:

- 11 = 5t - 9

• Interchange the equation sides:

5t - 9 =  - 11

• Add 9 to all either sides [ addition rule of equality ]

(5t - 9) + 9 =  - 11 + 9 \\ 5t =  - 2

• divide either sides by 5 [ division rule of equality ]

{ \underline{ \underline{ \:  \: t =  -  \frac{2}{5} \:  \:  }}} \\

padilas [110]2 years ago
6 0
-11+9= 5t
-2=5t (divide both sides by 5)
t= -2/5

(Mark me the brainliest if this has helped )
You might be interested in
An article written for a magazine claims that 78% of the magazine's subscribers report eating healthily the previous day. Suppos
Schach [20]

Answer:

89.44% probability that less than 80% of the sample would report eating healthily the previous day

Step-by-step explanation:

We use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

p = 0.78, n = 675

So

\mu = E(X) = np = 675*0.78 = 526.5

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{675*0.78*0.22} = 10.76

What is the approximate probability that less than 80% of the sample would report eating healthily the previous day?

This is the pvalue of Z when X = 0.8*675 = 540. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{540 - 526.5}{10.76}

Z = 1.25

Z = 1.25 has a pvalue of 0.8944

89.44% probability that less than 80% of the sample would report eating healthily the previous day

8 0
3 years ago
Can you combine like terms without formally showing the distributive property? Explain.
blsea [12.9K]
Yes you can! Say you have 5(2 + x) + 3x. The answer would be 10+8x because when you use the distributive property you will end up getting 5*2 5*x and once you multiply, it's obvious 5 times 2 is 10 and 5 times x will equal 5x. Then you add 5x and 3x and get 8x. So, the simplified expression here is 10+8x. When you have this as an answer it's proving your answer right. You can without using the distributive property. We can have 10+5x+3x and it will be your simplified expression. It's the same thing with equations too.
6 0
3 years ago
Any help is appreciated, check the picture above for the question.​
Aleksandr-060686 [28]

Answer:

y + 5 > -2 i.e. option 4.

Step-by-step explanation:

An inequality is shown in the number line by an arrow and we have to identify the inequality from the options given.

It is clear from the given figure that the y variable is plotted and its value is greater than - 7 but not including - 7.

Therefore, option 4 which gives the inequality y + 5 > -2 will be the correct answer.

As it gives y > - 2 - 5 i.e. y > - 7 (Answer)

8 0
3 years ago
Someone help me I forgot about this I need the answer
bekas [8.4K]
The answer is B because -3.62 is less than -3.5 and greater than -3.8.
8 0
3 years ago
I Need Help Please with this problem
goldenfox [79]

ΔACD is similar to ΔBCD by AA similarity theorem

AD/AC = BD/BC

x/5 = 4.2/6

6x = 21

x = 3.5

Hope this helps! ;)

3 0
3 years ago
Other questions:
  • Need help on answering 8.
    10·1 answer
  • Please help! 20 points​
    8·2 answers
  • Solve y=3x-7 and 4x+3y=18 by substitution
    14·2 answers
  • Factor 2x2 - 9x - 11.
    8·1 answer
  • Help with trig homework please Get Brainiest
    14·1 answer
  • What the heck does this mean? -(-) =
    13·2 answers
  • Which is the correct algebraic expression after combining like terms? 6+8x-7-x
    7·2 answers
  • Evaluate 8.3p+7.9r when p =3 and r=4. 8.3( ) +7.9( ) = +31.6 help!!!!! ​
    12·2 answers
  • The function f is a defined by f (x) =x^2+6<br> Find f (3x)
    15·1 answer
  • I’m sorry i need at least twenty letters so pleas tell me <br><br> What is<br><br> 13.1×3.70
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!