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Ganezh [65]
3 years ago
5

the number that is 3 times the sum 5 and 7 i wrote 3 x 5 + 7 explain why i cannot use this expression to find the number

Mathematics
2 answers:
kvv77 [185]3 years ago
3 0

Answer:

3X(5+7)

Step-by-step explanation:

Because correctly is of this way:

3X(5+7)

and not so:

(3X5) + 7

Best regards

Natasha2012 [34]3 years ago
3 0
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ You have written it the incorrect way.

Following the rules of PEMDAS, the multiplication would be carried out before the addition. This is not what is wanted

The question would want 3 times the SUM of 5 and 7.

To make sure you get the correct answer, you would have to write the expression slightly different

The correct way would be:

3(5 + 7)

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

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Which function pass through the points (1, 4), (2, 9), and (3, 16)?
swat32

ANSWER

y=  {(x+ 1)}^{2}

EXPLANATION

The given points are:

(1, 4), (2, 9), and (3, 16)

It is obvious that the function is not linear because there is no constant difference among the y-values.

We can however manipulate the y-values to quickly identify the function.

4 =  {2}^{2}  =  {(1 + 1)}^{2}

9=  {3}^{2}  =  {(2 + 1)}^{2}

16=  {4}^{2}  =  {(3 + 1)}^{2}

We can infer from the pattern that, the function is;

y=  {(x+ 1)}^{2}

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4 years ago
Help me please don’t use me for points
Norma-Jean [14]

Answer:

9x+3

Step-by-step explanation:

First join the x terms, and you will find 9x (1x+8x), then join the numbers, and you get 3 (-7+10)

Hope it helps!

5 0
3 years ago
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Solve the equation. 7+3lnx=20
siniylev [52]

Answer:

Simplifying

7 + 3lnx = 15

Solving

7 + 3lnx = 15

Solving for variable 'l'.

Move all terms containing l to the left, all other terms to the right.

Add '-7' to each side of the equation.

7 + -7 + 3lnx = 15 + -7

Combine like terms: 7 + -7 = 0

0 + 3lnx = 15 + -7

3lnx = 15 + -7

Combine like terms: 15 + -7 = 8

3lnx = 8

Divide each side by '3nx'.

l = 2.666666667n-1x-1

Simplifying

l = 2.666666667n-1x-1

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What is the present value of a $1,600 payment made in five years when the discount rate is 10 percent?
Anvisha [2.4K]

Answer:

Present value is $993.47

Step-by-step explanation:

PV = present value

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Discount (i) = 10%

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The formula for this is given by:

PV = FV/(1 + i)^N

PV = $1600/(1 + 0.10)^5

PV = $1600/1.1^5

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PSYCHO15rus [73]

To understand this question, we need some knowledge on radioactive decay. This type of nuclear decay is called a beta decay

<h3>Beta Decay</h3>

This is the process where a radioactive material is fired or naturally emits a beta particle which is equivalent to the lose of an electron and spontaneously becomes an entirely different element.

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Learn more on beta decay here;

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