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2 years ago

Simplify the expression (7x2 − 3x) + 4x2. 8x 8x2 3x2 − 3x 11x2 − 3x NextReset

Mathematics

1 answer:

olchik [2.2K]2 years ago

7 0

(7x^2-3x)+4x^2
7x^2+4x^2-3x
11x^2-3x
Answer: 11x^2-3x.

You just combine like terms.

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Which choice is equivalent to √10*√5?<br> A. 5√2<br> B. 25√2<br> C. 5√10<br> D. 2√5

DanielleElmas [232]

Answer: $5\sqrt{2}$

Step-by-step explanation:

$\sqrt{10} *\sqrt{5} =\sqrt{50} =\sqrt{2*5*5} =5\sqrt{2}$

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2 years ago

For f(x) = 3x+1 and g(x) = x^2-6, find (g/f)(x)

nexus9112 [7]

G/f(x) = x^2 - 6 / 3x + 1
3x + 1 = x^2 - 6
x^2 - 3x - 6 - 1 = 0
x^2 - 3x - 7 = 0
x = 4.54 , x = - 1.54

i am a mathematics teacher. if anything to ask please pm me

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2 years ago

Read 2 more answers

The difference of 3 times a number and 15 is no less than the square of the number.

jok3333 [9.3K]

Answer:

(B) The inequality that represents this relationship is $3x < x^2 +15$

Step-by-step explanation:

Let us assume the given number = x

⇒ 3 times the given number = 3 (x) = 3x

Square of the given number = $(x)^2 = x^2$

Now, According to the question:

The difference of (3 x) and 15 is no less than $x^2$

⇒ $3x - 15 < x^2\\ \implies 3x < x^2 +15$

or, $3x < x^2 +15$

Hence, the given inequality is represented as $3x < x^2 +15$

8 0

2 years ago

Read 2 more answers

Help plz !!!!!!!!!!!!!!!!!!!!!!!

hoa [83]

That ones a hardddd one ill let someone else answer thatttttt

7 0

2 years ago

Find the lateral area of the cone in terms of π.

Andreyy89

Answer:

$15\pi\ cm^{2}$

Step-by-step explanation:

we know that

The lateral area of the cone is equal to

$LA=\pi rl$

where

r is the radius of the base

l is the slant height

we have

$r=3\ cm$

Applying the Pythagoras Theorem find the slant height

$l^{2}=3^{2} +4^{2}\\ \\l^{2}=25\\ \\l=5\ cm$

substitute in the formula

$LA=\pi (3)(5)=15\pi\ cm^{2}$

8 0

2 years ago