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3 years ago

Mathematics-Algebric expressions and identity for class 8

Mathematics

1 answer:

Pani-rosa [81]3 years ago

5 0

Answer:

-12p^4

Step-by-step explanation:

4p^3*(-3p)

-12p^4

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A box contains 18 green marbles and 8 white marbles. If the first marble chosen was a white marble, what is the probability of c

murzikaleks [220]

Answer:

7/25

Step-by-step explanation:

Original contents of the box:

18 green marbles

8 white marbles

Contents of the box after drawing 1 white marble:

18 green marbles

7 white marbles

Total: 25 marbles

p(white) = (number of white marbles)/(total number of marbles)

p(white) = 7/25

7 0

1 year ago

Roy drives a sedan that gets mileage of 30 miles per gallon. If fuel consumption is represented by g and mileage by m, which fun

vesna_86 [32]

M=f(g)=30 x g

Think about it - if the car has 5 gallons of gas then
m=f(5)=30 x 5
m=150

7 0

4 years ago

Use the quadratic formula to solve the<br> quadratic equation. SHOW ALL WORK.<br> 2 −8+41 = 0

horsena [70]

Answer:

Solving the equation $x^2-8x+41=0$ using quadratic formula we get $x=4+5i \ or \ x=4-5i$

Step-by-step explanation:

We need to solve the equation $x^2-8x+41=0$ using quadratic formula.

The quadratic formula is:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

where a=1, b=-8 and c=41

Putting values in formula and finding x

$$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$\\$x=\frac{-(-8)\pm\sqrt{(-8)^2-4(1)(41)}}{2(1)}$\\$x=\frac{8\pm\sqrt{64-164}}{2}$\\$x=\frac{8\pm\sqrt{-100}}{2}$\\We \ know \ \sqrt{-1}=i\\x=\frac{8\pm10i}{2}\\x=\frac{8+10i}{2} \ or \ x=\frac{8-10i}{2}\\x=4+5i \ or \ x=4-5i$

So, Solving the equation $x^2-8x+41=0$ using quadratic formula we get $x=4+5i \ or \ x=4-5i$

5 0

3 years ago

Solving equations with variables on both sides. Check answer pls

Law Incorporation [45]

Okay so first you distribute to both sides(the arrows). then you subtract 5y to both sides and bring everything down. then you subtract 7 to both sides and get -27=9y and divide by 9 to get the y alone .

3 0

4 years ago

Read 2 more answers

Karen and Bill collect coins. Karen has x coins. Bill has 9 coins fewer than two times the number of coins Karen has. Write and

Eduardwww [97]

Karen = x
bill = 2x - 9
total = x + 2x - 9 = 3x - 9

6 0

2 years ago