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3 years ago

Again, it looks easy but I cannot thinkkkk

Mathematics

2 answers:

REY [17]3 years ago

5 0

For this case we have the following equation:

$5x + 1 = 4y + 3$

We must indicate an equivalent equation that allows to obtain the value of the variabale "x"

To do this, we clear x from the given equation:

We subtract 1 from both sides of the equation:

$5x = 4y + 3-1\\5x = 4y + 2$

We divide between 5 on both sides of the equation:

$x = \frac {4y + 2} {5}$

ANswer:

Option D

stealth61 [152]3 years ago

5 0

<u>Answer:</u>

The correct answer option is D. $x=\frac{4y+2}{5}$ .

<u>Step-by-step explanation:</u>

We are given the two models that represent the following equation:

$5x+1=4y+3$

We are to determine whether which of the given equations in the answer options can be used to find the value of x.

To find the equation, we will make $x$ the subject in $5x+1=4y+3$ .

$5x=4y+3-1$

$5x=4y+2$

$x = \frac { 4 y + 2 } { 5 }$

Therefore, the correct answer option is D.

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A baseball is thrown without any spin. Would you consider the baseball to be in motion?

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Answer:

yes

Step-by-step explanation:

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3 years ago

Solve x/10 = -7 A. x = 3 B. x = -0.7 C. x = -17 D. x = -70

timofeeve [1]

Answer:

x = -70

Step-by-step explanation:

x/10 = -7

Multiply each side by 10

x/10*10 = -7*10

x = -70

7 0

3 years ago

Which equation is equivalent to 2^4x=8^x-3?

slavikrds [6]

Answer:

Step-by-step explanation:

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3 years ago

12 is 90% of what number?<br><br><br> with steps

a_sh-v [17]

Answer:

<h3><u>Let's</u><u> </u><u>understand the concept</u><u>:</u><u>-</u></h3>

Here 12 is 90% of a number.
So we can say that 90% of That number is 12 .
In this way we can get the the number

<h3><u>Solution</u><u>:</u><u>-</u></h3>

Let,

the number=x

<h3>According to the question ,</h3>

${:}\longrightarrow$ $\sf 90\% \:of \;x=12$

We know 90%=90/100
so add it

${:}\longrightarrow$ $\sf {\dfrac {90}{100}}\times x=12$

${:}\longrightarrow$ $\sf {\dfrac {90x}{100}}=12$

Now use cross multiplication method

${:}\longrightarrow$ $\sf 90x=12\times 100$

${:}\longrightarrow$ $\sf 90x=1200$

Now interchange sides .

${:}\longrightarrow$ $\sf x={\dfrac {1200}{90}}$

${:}\longrightarrow$ $\sf x={\dfrac {200}{15}}$

Answer will come in decimals so we take approximate value.

${:}\longrightarrow$ $\sf x=13.3$

${:}\longrightarrow$ $\sf x=approximately \:13$

$\therefore$ The number is 13.

6 0

3 years ago

A factory produces 90 packages of mixed nuts in 1 min. A quality control manager selected 10 of these 90 packages at random and

valentina_108 [34]

Answer:

34

explanation:

First of all, put the numbers in order

30, 31, 31, 32, 33, 35, 35, 35, 36, 36

Then, find the middle number.
In this case, there is an even amount of numbers so, we have to pick the 2 middle numbers which is 33 and 35.

Now all you have to do is add these two numbers together then divide by 2 which will give you 34.

or, in simpler questions like this one, you can just say 34 as you know it is between 33 and 35.

In other questions, it might have and odd amount of numbers, for example:

3, 3, 5, 8, 10

so all you would do here is pick the middle number which would be 5. (it has 2 numbers on each side of it)

7 0

3 years ago