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almond37 [142]
3 years ago
13

Pls help me with these 2 math questions

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
5 0

Answer:

First, 7\sqrt[3]{x^2} Second, x^1/2

Step-by-step explanation:

alexdok [17]3 years ago
3 0

Answer:

1.C.7\sqrt[3]{x^2}

2.D.x^{\frac{1}{2}}

Step-by-step explanation:

We are given that

7(x)^{\frac{2}{3}}

We have to write given rational exponent in radical expression

Radical expression: The  expression contain  square root , cube root , fourth root etc.

7(x)^{\frac{2}{3}}=7\sqrt[3]{x^2}

Hence, the radical expression =7\sqrt[3]{x^2}

Option C is true.

2.(x^{\frac{1}{6}})^3

We have to simplify

We know that (a^b)^c=a^(b\cdot c}

Apply this rule

x^{\frac{1}{6}\times 3}=x^{\frac{1}{2}}

(x^{\frac{1}{6}})^3=x^{\frac{1}{2}}

Hence, option D is true.

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Please, I can really use some help. I have no idea how to solve this.
lions [1.4K]
A.
Use technology to plot the graph.
Here it is using wolframalpha.com.
http://www.wolframalpha.com/input/?i=y+%3D+-5;+y+%3D+3x+-+2+for+-2%3C%3Dx%3C%3D2

B.
The solution is where the graphs of the lines intersect. It is at point (-1, -5).

C.
y = -5
y = 3x - 2
-5 = 3x - 2
3x = -3
x = -1
The solution is (-1, -5) which is the same as with the graph.
8 0
3 years ago
Read 2 more answers
Please anyone I need this
olga2289 [7]

Answer:

u = 12

Step-by-step explanation:

The equation is showing 5(u) = 60

<u>Begin: 5(u)= 60</u>

2. Divide the 5 from both sides to get the u-value alone.

a) 5u/5 = u b) 60/5 = 12

<u>Now: u = 12</u>

3 0
3 years ago
Read 2 more answers
Saturn's rings extend to about 120,000 kilometers above Saturn's equator. Saturn's diameter at its equator is also about 120,000
Allisa [31]

<u>Answer:</u>

1130400 km

<u>Step-by-step explanation:</u>

We know the formula for circumference of a circle:

<em>Circumference = 2\pi r</em>

So we need the radius of Saturn ring to calculate its circumference.

We are given Saturn's diamter which is 120,000km; and know that Saturn's ring extends for about 120,000 km from the circumference of the Saturn.

Therefore, the radius of Saturn's ring will be 120000 km plus half of the diameter of Saturn:

Radius of Saturn's ring = 120000 + (120000/2) = 180000 km

Circumference of Saturn's rings = 2 x 3.14 x 180000 = 1130400 km

3 0
4 years ago
The endpoints of WX are W(2,-7) and X(5,-4). What is the length of WX?
ss7ja [257]

Answer:

<h2>WX = 3√2 units </h2>

Step-by-step explanation:

Using the formula for calculating the distance between two points to calculate the length of WX.

D = √(y₂-y₁)²+(x₂-x₁)²

Given the endpoints W(2,-7) and X(5,-4), x₁ = 2, y₁ = -7, x₂ = 5 and y₂ = -4

Substituting this values into the formula to get the length of WX will give;

WX = √(-4-(-7))²+(5-2)²

WX = √(-4+7)²+3²

WX = √3²+3²

WX = √18

WX = √2*9

WX = 3√2 units

Hence the length of WX is 3√2 units.

6 0
3 years ago
A car rental agency advertised renting a car for $26.95 per day and $0.27 per mile. If David rents this car for 3 days, how many
Lapatulllka [165]

Step-by-step explanation:

1 day = $ 26.95

3 days = 26.95 × 3

= $80.85

Remainder = $100 - $80.85

= $19.15

1 mile = $ 0.27

= $19.15 ÷ $0.27

= 71 miles

8 0
2 years ago
Read 2 more answers
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