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Oksana_A [137]
3 years ago
8

Tina's age is 4 years less than 3 times her niece's age. If her niece's age is x years, which of the following expressions best

shows Tina's age? x − 4 4x − 3 3x − 4 4 − 3x
Mathematics
2 answers:
Arada [10]3 years ago
8 0

Answer:

<em>3x</em> - 4

Step-by-step explanation:

As Tina's age is 3 into <em>x</em> ( 3 x <em>x</em><em>=</em> 3x)but 4years less (-4)

Therefore Tina's age is 3x - 4

salantis [7]3 years ago
8 0

Answer:

3x - 4

Step-by-step explanation:

Use these representations:  niece's age: x

We triple x and then subract 4 years from the result, obtaining:

Tina's age:  3x - 4

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anygoal [31]
B and D because it doesnt matter how you write the equation you still get the same answer, 

don't forget to rate my answer 5 stars and thank me
7 0
3 years ago
The number of visitors to a certain Web site triples every month. The number of visitors is modeled by the expression 900 * 3^m​
kipiarov [429]

Answer:

900\times 3^m = 100

Step-by-step explanation:

The number of visitors is modeled by the expression 900\times 3^m

Where m is the number of months after the number of visitors was measured.

We need to evaluate the above expression for m = -2.

So,

900\times 3^m=900\times 3^{-2}\\\\=900\times \dfrac{1}{3^2}\\\\=900\times \dfrac{1}{9}\\\\=100

At m = -2, the value of the above expression is equal to 100.

5 0
3 years ago
I don't understand???? I'll give the brainliest!!!!!
olasank [31]

Answer:

<h2>37</h2>

Option A is the correct option.

Step-by-step explanation:

{a}^{2}  +  {b}^{2}  - 2ab \:  \cos \: c \:  =  {c}^{2}  \\ a = 4 \\ b = 5 \\ c = 2 \\  \\ 2ab \: cos \: c =  {a}^{2}  +  {b}^{2}  -  {c}^{2}  \\  \:  \:  \:  \:  \:  \:  \:  \:  =  {(4)}^{2}  +  {(5)}^{2}  -  {(2)}^{2}  \\  \:  \:  \:  \:  \:  \:  \:  \:  = 16 + 25 - 4 \\  \:  \:  \:  \:  \:  \:  = 41 - 4 \\  \:  \:  \:  \:  \:  \:   = 37

Hope this helps...

Good luck on your assignment...

6 0
3 years ago
Here is another math question 6/3+(-1/3)
gtnhenbr [62]
<span>6/3+(-1/3)
</span><span>= 6/3-1/3
= 5/3
= 1 2/3</span>
6 0
3 years ago
Find the value of d that makes the equation true:
hichkok12 [17]
To answer this, you need to get "d" on one side by itself. To do this, add 8 to both sides of the equation.

d- 8 + 8 = 5 + 8
-8 and +8 cancel out leaving:
d = 13

Your answer is d = 13
7 0
3 years ago
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