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Nikolay [14]
3 years ago
15

F(x)=2x^2+9 Find f(-5)

Mathematics
2 answers:
Marrrta [24]3 years ago
6 0

════════ ∘◦❁◦∘ ════════

<h3>Answer = 59</h3>

════════════════════

<h3>Known </h3>

f(x) = 2x² + 9

════════════════════

<h3>Question</h3>

f(-5) = ?

════════════════════

<h3>Way to do </h3>

#as you the x inside the (x) changed into (-5) it means that you need to change the x into -5.

f(-5) = 2(-5)² + 9

= 2 × 25 + 9

= 50 + 9 = 59

<em>#</em><em>S</em><em>o</em><em> </em><em>f</em><em>(</em><em>-</em><em>5</em><em>)</em><em> </em><em>=</em><em> </em><em>5</em><em>9</em>

════════════════════

Serga [27]3 years ago
3 0

Answer:

59

Step-by-step explanation:

Given

f(x) = 2x² + 9

f ( -5) = 2 * ( -5)² + 9

= 25 * 2 + 9

= 50 + 9

= 59

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Answer:

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step-by-step explanation:

i can't see the rest of the question so i don't know the answer choices but:

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Triangle A(-2,7) B(-2,3) and C(-5,3) is reflected in the line X=0. Find A' , B' and C' the image co ordinates of triangle ABC.​
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3 years ago
Mr. Davis took his car to the repair shop. His total bill was $253. He was charged $48 for parts, and $5 for shop materials.
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Answer:

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3 0
2 years ago
In a survey of 2300 people who owned a certain type of​ car, 1035 said they would buy that type of car again. What percent of th
vivado [14]

Answer:

45%

Step-by-step explanation:

1. We assume, that the number 2300 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 2300, so we can write it down as 100%=2300.

4. We know, that x% equals 1035 of the output value, so we can write it down as x%=1035.

5. Now we have two simple equations:

1) 100%=2300

2) x%=1035

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=2300/1035

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 1035 is what percent of 2300

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(100/x)*x=(2300/1035)*x       - we multiply both sides of the equation by x

100=2.2222222222222*x       - we divide both sides of the equation by (2.2222222222222) to get x

100/2.2222222222222=x

45=x

x=45

4 0
3 years ago
Read 2 more answers
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