All categories

3 years ago

Please include work!

Mathematics

1 answer:

aleksandrvk [35]3 years ago

5 0

Answer:

A) y = x^2 -1

B) -y = 2x^2 +1 We multiply B) by -1

B) y = -2x^2 -1

We can then say x^2 -1 = -2x^2 -1

3 x^2 = 0

x = 0

************* Double-Check: ******************

Equation A) y = -1 and

Equation B) y = -1

Step-by-step explanation:

You might be interested in

What is the second step when evaluating the expression 18 = (24 - 18) + 3-1?

djverab [1.8K]

I believe you meant the equal signs to be division symbols haha. The next step would be 18/6.

6 0

2 years ago

Solving systems of equations by substitution -2x-3(6-11)=-7

Papessa [141]

Answer:

Step-by-step explanation:

Simplify both sides of the equation.

Subtract 15 from both sides.

Divide both sides by -2.

x = 11

3 0

3 years ago

Calculate the snow load for the low-slop (flat) roof. For this structure, we will use the following coefficients. Cs = 1.0 Ce =

CaHeK987 [17]

Answer:
The width of member is as follows:
b = 3 ft

b = 3 × 12 in.

b= 36 in.
The depth of member is as follows:

d = 8 ft

d = 8 × 12 in.

d=96 in.
Since the structure used is Douglas fir-Larch lumber of size 3 × 8 size. Hence, tensile strength, f =1000 psi
Calculate the net area of the member as follows:
A = (b - ∅) × d

A= (36 - 7/8) × 96
$A = 3372in^{2}$
Calculate the maximum axial tensile load by ASD method as follows:
P = f × A

P = 1000 x 3372

P = 3372000 lbs
P = 3372 kips

6 0

2 years ago

Rewrite in logarithmic form 19^2 = 361

Aneli [31]

Answer:

$\log_{19}{361}=2$

Step-by-step explanation:

We know that taking logarithms performs the transformation ...

$b^e=x\\\\e\cdot\log{b}=\log{x}\quad\text{take logs}\\\\e=\dfrac{\log{x}}{\log{b}}\quad\text{divide by $\log{b}$}\\\\\log_b{x}=e\quad\text{use the change of base formula}$

Then for b=19, e=2, x=361, we have

$\boxed{\log_{19}{361}=2}$

8 0

2 years ago

What is 5 pi over 4 radians in degrees? <br> 45°<br> 135°<br> 225°<br> 315°

lidiya [134]

225 (since the fraction is over 180° (because 5Π/4 > Π we know that the answer must be bigger than 180° (because 180° = Π (radians)
and its less than 270° because 270° = 3Π/2 or 6π/4

6 0

2 years ago

Read 2 more answers