3 years ago

What is the estimate of 19.7-6.9

Mathematics

1 answer:

Zolol [24]3 years ago

5 0

Always to do each to 1 sigfig 20-6=14

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Suppose that the functions g and f are defined as follows.

Sholpan [36]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

Given:

$\to g(x)= -3+2x^2 \\\\\to f(x)=9-6x$

Calculating the value of $(\frac{g}{f})(2)$ :

$\to (\frac{g}{f}) (2)= (\frac{g(x)}{f(x)}) \times (2)$

$=\frac{2x^2-3}{9-6x} \times 2\\\\=\frac{2\cdot 2^2-3}{3(3-2\cdot 2)} \\\\=\frac{2\cdot 4-3}{3(-1)}\\\\ =\frac{8-3}{-3}\\\\ =\frac{5}{-3}\\\\ = - \frac{5}{3}\\\\$

x= $- \frac{\sqrt{3}}{2}$ and x= $\frac{\sqrt{3}}{2}$ are not in the domain.

Domain: $x \belong (- \infty, -\frac{\sqrt{3}}{2})\cup (- \frac{\sqrt{3}}{2}, \frac{\sqrt{3}}{2} )\cup (\frac{\sqrt{3}}{2}, \infty)$

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3 years ago

What is the surface area of the pyramid? 24.9 m2 55.7 m2 75.7 m2 105.4 m2

bija089 [108]

55.7

Step-by-step explanation:

4 0

3 years ago

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Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

maxonik [38]

ANSWER

$2 \frac{1}{4}$

EXPLANATION

We want to find the constant that must be added to

${x}^{2} - 3x$

to form a perfect square.

Comparing the given expression to

$a{x}^{2} + bx + c$

we have

a=1 , b=-3 , and c=0.

We need to add

${( \frac{b}{2a} })^{2}$

We substitute the values to get,

${( \frac{ - 3}{2(1)} })^{2} = \frac{9}{4}$

We change this to mix numbers to get,

$2 \frac{1}{4}$

The last choice is correct.

4 0

3 years ago

Arnie keeps his pet snake in an open-topped glass cage. The outside of the cage is 73 cm long, 60 cm wide, and 38 cm high. The g

oksian1 [2.3K]

1 = 73 - 2*0.5 = 72 cm

w = 60 - 2*0.5 = 59 cm

h = 38 - 1*0.5 = 37.5 cm

V = l × w × h

V = 72*59*37.5

V = 159,300 cm^3

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3 years ago

Classify the following triangle .check all that apply

Lera25 [3.4K]

Answer:

Isosceles right triangle

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2 years ago

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