All categories

3 years ago

Faisal tries to solve

Mathematics

2 answers:

kramer3 years ago

8 0

Step-by-step explanation:

the steps he took are correct but the answer of x is somehow wrong because

(x+2)=0

x = -2

and not x = 2

Ronch [10]3 years ago

5 0

Answer:

He should have subtracted 2 from each side to find the solution for x+2 =0

Step-by-step explanation:

(x + 2)(x - 7) = 0

Using the zero product property

x+2 = 0 x-7=0

x+2-2=0-2 x-7+7=0+7

x = -2 x=7

He should have subtracted 2 from each side to find the solution for x+2 =0

You might be interested in

Is 1/7 greater than -5

Montano1993 [528]

Answer:

Step-by-step explanation:

1/7 is positive, -5 is negative. Negative is less than positive

4 0

3 years ago

Read 2 more answers

Use the Pythagorean Theorem to find the length

WINSTONCH [101]

Answer:

Step-by-step explanation:

64 +36=100

Square root of 100 is 10

3 0

3 years ago

Measure of the angle

Zolol [24]

In total it has to be 180 since a straight line is 180 so i would be 69

5 0

3 years ago

Read 2 more answers

F(x) = x2 – 3x + 5 g(x) = V22 – 2x Calculate g (f (1)).

erik [133]

Step-by-step explanation:

So first of all we plug in 1 into f(x) and the result of that into g(x).

f(1)=(1)^2-3(1)+5

=1-3+5

g(3)=(3)(22)-2(3)

=66-6

=60

3 0

3 years ago

(−5)3x7(yz)4 / (3)2x2y8z2

g100num [7]

Answer:

$\dfrac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}=\dfrac{-5x^5z^2}{2y^4}$

Step-by-step explanation:

Given:

The expression to simplify is given as:

$\frac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}$

In order to simplify this, we have to use the law of indices.

1. $(ab)^m=a^mb^m$

So, $(yz)^4=y^4z^4$

Substitute this value in the above expression. This gives,

$=\dfrac{(-5)3x^7y^4z^4}{(3)2x^2y^8z^2}\\\\\\=\dfrac{-15x^7y^4z^4}{6x^2y^8z^2}......(-5\times 3=15\ and\ 3\times 2=6)$

Now, we use another law of indices.

2. $\frac{a^m}{a^n}=a^{m-n}$

So, $\frac{x^7}{x^2}=x^{7-2}=x^5,\frac{y^4}{y^8}=y^{4-8}=y^{-4}, \frac{z^4}{z^2}=z^{4-2}=z^2$

Substitute these values in the above expression. This gives,

$=\frac{-15}{6}\times x^5\times y^{-4}\times z^2\\\\=\frac{-5x^5y^{-4}z^2}{2}$

Finally, we further simplify it using the law $a^{-m}=\frac{1}{a^m}$

So, $y^{-4}=\frac{1}{y^4}$

Therefore, the given expression is simplified as:

$\dfrac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}=\dfrac{-5x^5z^2}{2y^4}$

5 0

3 years ago