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2 years ago

-4 x f (8) + 3 x g(-7) HELP ASAP

Mathematics

1 answer:

lubasha [3.4K]2 years ago

8 0

Answer:

-32

Step-by-step explanation:

-4 + f(8) + 3 x g(-7) = ?

To find f(8), look at each of the f(x) function and find x = 8. The y value is the answer you will plug in for f(8). The same goes for g(-7), but you will be looking at the g(x) function at x = -7.

f(8) = -4

g(-7) = -8

Make sure you solve in the correct order using PEMDAS.

-4 + (-4) + 3 x (-8) = -32

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2 years ago

P and q are different two-digit prime numbers with the same digits, but in reversed order. what is the value of the larger of p

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Of that list, the following primes are mirror images of each other
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17 and 71
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2 years ago

Read 2 more answers

Factor completely 2x3 + 8x2 + 3x + 12.

goblinko [34]

Answer:

$(2x^2+3)(x+4)$ .

Step-by-step explanation:

$2x^3+8x^2+3x+12$

We need to find the factors of given equation;

Solution:

On Solving the above equation we get;

Now First we will take common factor from first 2 terms which is $2x^2$ we get;

$2x^2(x+4) + 3x+12$

Now we will take the common factor from the last 2 terms which is 3 we get;

$2x^2(x+4) + 3(x+4)$

Here we get 2 terms in which $(x+4)$ is common factor.

$(x+4)(2x^2+3)$

Hence After factorizing the given equation we get $(2x^2+3)(x+4)$ .

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2 years ago

Please help i have 2 questions thank you very much.

Rudik [331]

Hello!

Question 1
We first have to convert everything to yards since the concrete is charged by the cubic yards

15 feet = 5 yards
15 feet = 5 yards
3 inches = 0.08333

Multiply these to find the volume

5 * 5 * 0.08333 = 2.08325

Multiply this by the cost

2.08325 * 46 = 95.83

The answer is C) $95.83
------------------------------------------------------------------------------------------------------
Question 2

You have to find the volume of the first pyramid

The equation we use is $V = \frac{lwh}{3}$

V is volume
l is length
w is width
h is height

Put in the values we know

$V = \frac{16 * 16 * 28}{3}$

Multiply

$V = \frac{7168}{3}$

Divide

V = 2389.3333

Now we use this to find the side length of the second pyramid

$2389.333 = \frac{lw * 112}{3}$

Multiply both sides by 3

<span>7167.999 = lw * 112
</span>
Divide both sides by 112

63.9999 = lw

Since it is a square pyramid we know that sides are equal

63.999 = l^2

Take the square root of both sides

8 = l

The answer is B) 8in

Hope this helps!

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2 years ago