All categories

4 years ago

What is the solution of the system? Use elimination.

Mathematics

1 answer:

blondinia [14]4 years ago

5 0

A is the answer to this question

You might be interested in

Select the correct answer.

andrew-mc [135]

Answer:

OPTION C

Step-by-step explanation:

We have the following rules:

$\sqrt[a]{x} = x^{\frac{1}{a}$ and

$x^a . x^b = x^{a + b}$

OPTION A: $x \sqrt[7]{x}$

= $x . x^{\frac{1}{7}$

= $x^{1 + \frac{1}{7}$

$= x^{\frac{8}{7}$ $\ne x^{\frac{9}{7}$

So, it can be eliminated.

OPTION B: $\bigg ( \frac{1}{\sqrt[7]{x}} \bigg )^9$

= $\bigg ( \frac{1}{x^{\frac{1}{7}}} \bigg )^9$

= $\bigg ( x^ {\frac{-1}{7}} \bigg )^9$

= $x^{\frac{-9}{7}}$

So, this option is also eliminated.

OPTION C: $x . \sqrt[7]{x}$

= $x . x^{\frac{1}{7}}$

= $x^{1 + \frac{1}{7}}$

= $x^{\frac{9}{7}}$

So, OPTION C is the answer.

5 0

3 years ago

Please provide the step by step explanation. People never do that

777dan777 [17]

Answer:

D) √15

Step-by-step explanation:

An irrational number is a number that can be expressed as an infinite decimal with no set of consecutive digits repeating itself indefinitely and that cannot be expressed as the quotient of two integers.

Therefore the answer would be D) √15 because the decimals keep going

A) 1.52 just ends like so

B) -13³ equals -2197

C) 9/4 equals 2.25

8 0

3 years ago

Read 2 more answers

The diagram shows a wooden prism of height 5cm.

igomit [66]

Answer:

280.8997

Step-by-step explanation:

cross section = 2*15*5+2*(25/360)*15*15*pi+5*(25/360)*2*pi*15

= 280.8997

5 0

3 years ago

Evaluate −6a^3+8a^2+8a+1, when a=5.

EastWind [94]

Answer:

-509

Step-by-step explanation:

1. Subsitute 5 for a in the expression. -6(5)^3+8(5)^2+8(5)+1

2. -6(125)+8(25)+40+1

3. -750+200+41

4. -509

8 0

3 years ago

Helppppp im tired and I cant even think no moreee

Vladimir [108]

Answer:

The equation of line in the form of Ax + By = C is: $\mathbf{4x+y=-17}$

Step-by-step explanation:

We need to find the equation of line, with the given slope passes through the given point.

Slope m = -4

Point: (-2,-9)

We need to find slope and y-intercept of the line.

The slope of line is given m = -4

Now, we need to find the y-intercept

Using the point (-2,-9) and slope m = -4, we can find y-intercept

The formula used will be: $y=mx-b$

Putting values of: y= -9, x =-2 and m = -4

$y=mx+b\\-9=-4(-2)+b\\-9=8+b\\b=-9-8\\b=-17$

So, y-intercept b = -17

Now, the equation of required line having slope m = -4 and y-intercept b = -17 is:

$y=mx+b\\y=-4x-17$

Writing equation in required form i.e. of Ax + By = C

$y=-4x-17\\4x+y=-17$

So, the equation of line in the form of Ax + By = C is: $\mathbf{4x+y=-17}$

6 0

3 years ago