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3 years ago

13

Which expression is equivalent to the given expression?

1 answer:

Angelina_Jolie [31]3 years ago

4 0

Answer:

Step-by-step explanation:

20cd^-1

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How would you add parentheses and brackets to make this sentence true: 45÷2×4.7-4.4×6=54

BabaBlast [244]

45÷[(2×4.7)-4.4]×6 is where you would place them each

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4 years ago

Can someone help me please and thanks oh and it 3 and 6

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4 years ago

A large college statistics class has 400 students. The students' final exam scores in the class are normally distributed with a

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4 years ago

What is the equation of the circle with center (1, −1) that passes through the point (5, 7)?

kykrilka [37]

Answer:

Option C $(x-1)^2+(y+1)^2=80$

Step-by-step explanation:

step 1

Find the radius of the circle

we know that

The distance from the center of the circle to any point on the circumference of the circle is equal to the radius of the circle

we have

(1,-1) and (5,7)

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

substitute the values

$d=\sqrt{(7+1)^{2}+(5-1)^{2}}$

$d=\sqrt{(8)^{2}+(4)^{2}}$

$d=\sqrt{80}\ units$

step 2

Find the equation of the circle in center radius form

$(x-h)^2+(y-k)^2=r^2$

where

(h,k) is the center

r is the radius

substitute

$(x-1)^2+(y+1)^2=(\sqrt{80})^2$

$(x-1)^2+(y+1)^2=80$

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3 years ago

Water flows through a hose and fills a 100-gallon tank in eight minutes. When represented as a rate, in gallons per minute, what

sergiy2304 [10]

Answer:

0.08.

Step-by-step explanation:

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3 years ago