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2 years ago

Combine like terms to create an equivalent expression.

Mathematics

1 answer:

lozanna [386]2 years ago

8 0

The expression 1/7 – 3(3/7n – 2/7) is equivalent to the expression 1 – 9/7n.

<h3>What is an equivalent expression?</h3>

The equivalent is the expressions that are in different forms but are equal to the same value.

The expression is given below.

⇒ 1/7 – 3(3/7n – 2/7)

On simplifying the expression, we have

⇒ 1/7 – 9/7n + 6/7)

⇒ 1 – 9/7n

More about the equivalent link is given below.

brainly.com/question/889935

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Determine the center and radius of the following circle equation: x^2+y^2-8x+6y-75=0 x 2 +y 2 −8x+6y−75=0 Center: \big(( , \big)

Reptile [31]

Answer:

Compare x^2 +y^2-8x-6y=75 with the general circle equation x^2+y^2 -2ax-2by+c=0

-2a =-8 And -2b=-6

a=4 b=3

c=-75

To find the radius use the equation

r^2=a^2+b^2-c

r^2=4^2+ 3^2-(-75)

r^2=25+75=100

r=10(radius is always positive)

Hence the center is (4,3) and radius 10

Step-by-step explanation:

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3 years ago

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tamaranim1 [39]

Answer:

(y¹-y¹/x¹-x¹)

8-11/10-19

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1/3

Step-by-step explanation:

1/3 or one-third is your answer!

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3 years ago

If the selling price for laptop is $1100 and is marked down by 30% in promotional offers, then sale price after discount is

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770$

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3 years ago

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Rzqust [24]

As the x value increases by 1 the y value increases by 6. The x value skips from 4 to 25 whihc means it increased by 21.The y value 21 * 6 + 11 or 137 when x is 25

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3 years ago

According to records in a large hospital, the birth weights of newborns have a symmetric and bell-shaped relative frequency dist

Kamila [148]

Answer:

15.9% of babies are born with birth weight under 6.3 pounds.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 6.8 pounds

Standard Deviation, σ = 0.5

We are given that the distribution of birth weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(birth weight under 6.3 pounds)

P(x < 6.3)

$P( x < 6.3) = P( z < \displaystyle\frac{6.3 - 6.8}{0.5}) = P(z < -1)$

Calculation the value from standard normal z table, we have,

$P(x < -1) = 0.159 = 15.9\%$

15.9% of babies are born with birth weight under 6.3 pounds.

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3 years ago