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3 years ago

10. -3.8x - 5.9x = 223.1

Mathematics

2 answers:

Tema [17]3 years ago

3 0

Answer:

-23

Step-by-step explanation: You have to combine like terms first:

-3.8x -5.9x =223.1

-9.7x = 223.1

Then divide om each side of the equation by -9.7.

-9.7x/-9.7 = 223.1/-9.7

x =- 23

san4es73 [151]3 years ago

3 0

Answer:

x=-23

Step-by-step explanation:

-3.8x-5.9x=223.1

Collect like terms by calculating the sum or difference of their coefficients

(-3.8-5.9)x

calculate the difference

-9.7x=223.1

Divide both sides of the equation by -9.7

-9.7x÷(-9.7)=223.1÷(-9.7)

Any expression divided by itself equals 1

x=223.1÷(-9.7)

x=-23

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1000+50-36+7×9+8÷5×2+1

melomori [17]

Answer:

949.2

Step-by-step explanation:

To solve this equation, you must use P.E.M.D.A.S...

First, solve 7x9 and 5x2...

7x9= 63 5x2 = 10

So...

1000+50-36+63+8÷10+1

Next, solve 8÷10 and get 0.8

So...

1000+50-36+63+0.8+1

Then, solve 1000 + 50, and 36+63, and that result with 0.8 and that with 1.

So...

1050-100.8

The Solve!

949.2

Hope this helps!

-kiniwih426

7 0

2 years ago

you deposit 1000 in savings account that earns .5% each month assuming you do not deposit or withdraw any money from the account

ikadub [295]

Answer:

$1015.11

Step-by-step explanation:

Compounded interest rate formula: A = P(1 + r/n)^t

Step 1: Plug in known variables

A = 1000(1 + 0.005/12)^36

Step 2: Multiply it all together

1000(1.00042)^36

1000(1.01511)

1015.11

This is a pretty bad bank considering only giving you .5% interest per month.

7 0

2 years ago

Seventy-eigth hundred-thousandths

s2008m [1.1K]

The decimal number for seventy eight hundred-thousandths is 5.

<h3>What is decimal number?</h3>

A decimal is a number that consists of a whole and a fractional part

The decimal numeral system is the standard system for denoting integer and non-integer numbers.

What is the decimal number for seventy eight hundred-thousandths?

= 78 x 10⁻⁵

note: a hundred thousandth = 10⁻⁵

= 0.00078

Thus, the decimal number for seventy eight hundred-thousandths is 5.

Learn more about decimal number here: brainly.com/question/1827193

#SPJ1

8 0

4 months ago

Addidas wants Kanye West to give a speech at a shoe event. Addidas is offering Kanye $500. How much does he want?

krok68 [10]

Answer:

that's the price of one shoeee, XD kanye want $500,000

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

According to a study conducted by the Toronto-based social media analytics firm Sysomos, of all tweets get no reaction. That is,

Svetllana [295]

Answer:

a) E(X) = 71

b) V(X) = 20.59

Sigma = 4.538

Step-by-step explanation:

The question is incomplete:

According to a 2010 study conducted by the Toronto-based social media analytics firm Sysomos, 71% of all tweets get no reaction. That is, these are tweets that are not replied to or retweeted (Sysomos website, January 5, 2015).

Suppose we randomly select 100 tweets.

a) What is the expected number of these tweets with no reaction?

b) What are the variance and standard deviation for the number of these tweets with no reaction?

This can be modeled with the binomial distribution, with sample size n=100 and p=0.71, as the probability of no reaction for each individual tweet.

The expected number of these tweets with no reaction can be calcualted as the mean of the binomial random variable with these parameters:

$E(X)=n\cdot p=100\cdot 0.71=71$

The variance for the number of these tweets with no reaction can be calculated as the variance of the binomial distribution:

$V(X)=np(1-p)=100\cdot0.71\cdot0.29=20.59$

Then, the standard deviation becomes:

$\sigma=\sqrt{V(X}=\sqrt{20.59}=4.538$

5 0

2 years ago