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2 years ago

What's is the square root of 63

1 answer:

3 0

You want to be finding out what two factors (where one of them is a perfect square) has the produce of 63. It seems like 9 x 7 (9 is the perfect square) works.

$\sqrt{63} = \sqrt{9 \times 7} = \sqrt{9} \times \sqrt{7}$

The square root of 9 is 3 so we can just have $3 \sqrt{7}$ (which just means 3 times the square root of 7).

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QUESTION 20

Elodia [21]

Answer:

B. -55

Step-by-step explanation:

La resta entre ambas funciones consiste en la sustracción de términos semejantes como demostraremos a continuación:

1) $f(x) =-2\cdot x ^{2}-6$ Dado

2) $g(x) = x+4$ Dado

3) $(f-g)(x) = (-2\cdot x^{2}-6)-(x+4)$ Definición de resta de funciones.

4) $(f-g)(x) = (-2\cdot x^{2}-6)+(-1) \cdot (x+4)$ $(-1)\cdot a = -a$

5) $(f-g)(x) = (-2\cdot x^{2}-6) + (-x-4)$ Propiedad distributiva/ $(-1)\cdot a = -a$

6) $(f-g)(x) = -2\cdot x^{2}-x+(-6-4)$ Propiedad conmutativa

7) $(f-g) (x) = -2\cdot x^{2}-x-10$ Sustracción de términos semejantes/Resultados.

A continuación, evaluamos la función resultante en $x = -5$ :

$(f-g)(-5) = -2\cdot (-5)^{2}-(-5)-10$

$(f-g)(-5) =-55$

Por ende, la respuesta correcta es B.

8 0

2 years ago

(2x+2y)+(3y-5x) EIHOIVHNVIHVIOE

Nina [5.8K]

$\huge\textsf{Hey there!}$

$\large\text{(2x + 2y) + (3y - 5x)}$

$\rightarrow\large\text{2x + 2y + 3y - 5x }$

$\large\textsf{COMBINE the LIKE TERMS}$

$\large\text{(2x - 5x) + (2y + 3y)}$

$\large\text{2x - 5x = \boxed{\bf -3x}}$

$\large\text{-3x + (2y + 3y)}$

$\large\text{2y + 3y = \boxed{\bf 5y}}$

$\large\text{\bf -3x + 5y}$

$\boxed{\boxed{\large\textsf{Answer: \huge \bf -3x + 5y}}}\huge\checkmark$

$\large\textsf{Good luck on your assignment and enjoy your day!}$

~ $\frak{Amphitrite1040:)}$

4 0

2 years ago

Read 2 more answers

what is the probability of drawing two yellow marbles if the first on is NOT place back into the bag before the second draw?

Kruka [31]

Answer:

1/45

Step-by-step explanation:

I assume there are 10 marbles total, 2 of which are yellow.

The probability the first marble is yellow is 2/10.

There's now one less marble, so the probability that the second marble is yellow is 1/9.

The total probability is (2/10) (1/9) = 1/45.

6 0

2 years ago

Help With A Question

blondinia [14]

The anwser is 5.05 cm hahahahahahahahahahahahah

4 0

2 years ago

BEST ANSWER GETS BRAINLIEST!! HELP PLEASE

skad [1K]

Area of the sign ( trapezoid ) :
A = ( a + b ) / 2 · h
where: a = 8, b = 5, h = 5
A = ( 8 + 6 ) / 2 · 5 =
= 14/2 · 5 = 7 · 5 = 35 ft²
Answer:
B ) 35 square feet

7 0

2 years ago

Read 2 more answers