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Gnesinka [82]
3 years ago
12

F(x)=4x+5whsts the value of. F(-3). Is

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
4 0
Plug in -3 for x
F(-3) = 4(-3) + 5
= -12 + 5 = -7
F(-3) = -7
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Find 25% out of the 0.45 and round it to the nearest thousandths
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Step-by-step explanation:

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Can someone help (8 grade math)
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Answer:

B) 110.92 u²

Step-by-step explanation:

to find the surface area, find the area of each side and add them together.

here are all 6 sides:

4.5 * 6.8

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7 0
3 years ago
What would be the x intercept
Nuetrik [128]

Answer: (1, 0) or 1

Step-by-step explanation:

Since it is parallel to y=2x-7 that means it has the same slope but a different y-intercept. Let's use b for the unknown value

6=2(4)+b

6=8+b

6-8=8+b-8

-2=b

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8 0
3 years ago
What is a simple way to solve for the sum and difference of 2 cubes? For example, 27+64<img src="https://tex.z-dn.net/?f=x%5E3"
salantis [7]

Answer:

(3 + 4x)(9 - 12x + 16x²) = 0

(4m - 1)(16m² + 4m + 1) = 0

Step-by-step explanation:

Here we have to solve the sum of two cubes which is 27 + 64x^{3}

Now, the equation is 27 + 64x^{3} = 0

⇒ 3³ + (4x)³ = 0

⇒ (3 + 4x)[3² - 3(4x) + (4x)²] = 0

⇒ (3 + 4x)(9 - 12x + 16x²) = 0

So, (3 + 4x) = 0 or (9 - 12x + 16x²) = 0

Therefore, from the above two relation we can solve for x.

One root will be - \frac{3}{4} and the others we will get by applying Sridhar Acharya Formula, which will give a pair of conjugate imaginary roots of the equation.  

Again, we have to solve the difference of two cubes which is 64m^{3} - 1

Now, the equation is 64m^{3} - 1 = 0

⇒ (4m)³ - 1³ = 0

⇒ (4m - 1)[(4m)² + 4m(1) + 1²] = 0

⇒ (4m - 1)(16m² + 4m + 1) = 0

So, (4m - 1) = 0 or (16m² + 4m + 1) = 0

Therefore, from the above two relation we can solve for m.

One root will be \frac{1}{4} and the others we will get by applying Sridhar Acharya Formula, which will give a pair of conjugate imaginary roots of the equation.  (Answer)

8 0
4 years ago
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