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3 years ago

X2 can be combined with X?

Mathematics

2 answers:

natulia [17]3 years ago

3 0

Answer:

Your first instinct might be to go ahead and add the x terms together, BUT this would be a bad thing to do! You cannot combine the x2 and 2x, because the first term has an exponent (2) and the second one does not have an exponent; therefore, you cannot add them together!

Step-by-step explanation:

tino4ka555 [31]3 years ago

3 0

Answer:

Not sure if you mean multiplying or adding by "combine". But generally the rule of thumb with exponents is when you are adding and they are not like terms, you cannot combine the two terms together. So in other words, they would be left as x²+x. However, when you are multiplying you can add the exponents together. So, it will be like this: x²·x = x³

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Choose the correct conic section to fit the equation. X=1/16y^2

arsen [322]

Hello from MrBillDoesMath!

Answer:

Parabola

Discussion:

The equation is x = (1/16) y^2. Multiply both sides by 16 to get

y^2 = 16x is a parabola that "opens to the right". (Looks like y = x^2 rotated clockwise 90 degrees)

Thank you,

MrB

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4 years ago

Miss Green tells you that a right triangle has a hypotenuse of 13 and a leg of 5 she asked you to find the other leg of the tria

Natalka [10]

Answer:

The other leg of the triangle is 12.

Step-by-step explanation:

Given:

Hypotenuse of triangle is 13 and a leg(Leg1) is 5.

Let, the other leg of the triangle (Leg2) be $x$ .

Now, putting the formula:

$(Hypotenuse)^{2}=(Leg1)^{2}+(Leg2)^{2}$

⇒ $13^{2} =5^{2} +x^{2}$

⇒ $169=25+x^{2}$

⇒ $169-25=x^{2}$

⇒ $144=x^{2}$

Taking square root both sides

⇒ $12=x$

⇒ $x=12$ .

Therefore, the other leg of the triangle is 12.

7 0

4 years ago

A garden has the form of a right triangle. One leg of the triangle is formed by a 2400-ft long sea wall. The hypotenuse of the

stepladder [879]

Answer:

given leg: 2400 ft
other leg: 1000 ft
hypotenuse: 2600 ft

Step-by-step explanation:

The Pythagorean theorem tells a relation between the leg lengths and the hypotenuse. If x represents the unknown leg length, then we have ...

x^2 + 2400^2 = (x +1600)^2

x^2 +5760000 = x^2 +3200x +2560000 . . . . eliminate parentheses

3200000 = 3200x . . . . . . . . . subtract x^2+2560000

1000 = x . . . . . . . . . . . . . . divide by 3200

The other leg length of the garden is 1000 ft. The garden is a triangle with side lengths 1000 ft, 2400 ft, 2600 ft.

4 0

4 years ago

What is X and Y ? Please as fast as you can answer this

olganol [36]

Answer:

28/5=x and y= -6/5

Step-by-step explanation:

solve by substitution

3x+4y=12

Rewrite equations:

2x+y=10;3x+4y=12

Step1: Solve 2x+y=10 for y:

2x+y=10

2x+y+−2x=10+−2x(Add -2x to both sides)

y=−2x+10

Step2: Substitute−2x+10 for y in 3x+4y=12:

3x+4y=12

3x+4(−2x+10)=12

−5x+40=12(Simplify both sides of the equation)

−5x+40+−40=12+−40(Add -40 to both sides)

−5x=−28

-5x/-5=-28/5

(Divide both sides by -5)

x= 28/5

Step3: Substitute

28/5 for x in "y=−2x+10":

y=−2x+10

y=−2(28/5)+10

y=-6/5(Simplify both sides of the equation)

Hope this helps!

7 0

3 years ago

A train traveling at a speed of 160 km / hr will take 18 hours to cover between two cities . How long will it take a car travell

Bogdan [553]

Answer:

24 hours

Step-by-step explanation:

160 x 18 = 2880

2880/120 = 24

3 0

3 years ago