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3 years ago

50 POINTS!!! I WILL GIVE BRAINLIEST TO WHOEVER SHOWS STEPS! THANK YOU!:)))

Mathematics

2 answers:

taurus [48]3 years ago

8 0

Answer:

Step-by-step explanation:

If you have something that says it is the f(x) or just f(something) then that is just telling you what the x equals. In this case, x=4 so you plug that into the equation.

This gives you f(4)=4(4)+7. From here, you will use the order of operations to solve.

f(4)=4*4+7

f(4)=16+7

f(4)=23

Temka [501]3 years ago

4 0

Answer:

f(4)=23

Step-by-step explanation:

1.f(4)=4(4)+7

2.f(4)=16+7

3.f(4)=23

hope this helps!

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PLEASE HELP!!! 20 POINTS!!!!

stealth61 [152]

To evaluate the expression all you have to do is substitute the value for the variable.

3 + y + 6, y = 5
3 + 5 + 6
8 + 6
14.

The solution is 14.

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3 years ago

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Which expressions are equivalent to this exponential expression

Alexandra [31]

Answer:

the correct answer will be 25

Step-by-step explanation:

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3 years ago

U have 12 dogs all but 8 dogs died how many dogs are still alive

mash [69]

8 dogs are still alive because you take away 4 from 12 which equals 8
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3 years ago

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Solve the equation for y. 4.2x-1.4y=2.1

mr Goodwill [35]

Subtract 2.1 from both sides:

$4.2x-1.4y-2.1=0$

Add 1.4y to both sides:

$4.2x-2.1=1.4y$

Of course, we can rewrite this as

$1.4y=4.2x-2.1$

Divide both sides by 1.4

$y = \dfrac{4.2}{1.4}x - \dfrac{2.1}{1.4} = 3x - 1.5$

8 0

4 years ago

How do i solve systems by substitution

julsineya [31]

Answer: x = 2, y = 9

Step-by-step explanation:

y = 9x - 9 Substitute x for 2

y = 9(2) - 9 Multiply 9 with 2

y = 18 - 9 Subtract 18 - 9

Final Answer: y = 9 and x = 2

Mark me as brainliest!

8 0

3 years ago