3 years ago

Which expression is equivalent to -2(1 - 4n)?

Mathematics

1 answer:

padilas [110]3 years ago

7 0

Answer:

-2+8n

Step-by-step explanation:

we can distribute the -2 inside the parentheses to find an equivalent expression.

-2(1-4n)

(-2)(1)+(-2)(-4n)

-2+8n

there's your answer!

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A map has a scale of 1 in: 25 mi. Two cities are 175 mi apart. How far apart are they on the map?

myrzilka [38]

Ratio = 1/25
Let, the distance b/w cities on map = x

It would be: 1/25 = x/175
x = 175/25
x = 7

In short, Your Answer would be 7 in

Hope this helps!

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3 years ago

Jameson Flip a quarter two times in a row. What is the probability that he flipped a heads followed by a tails?

Vadim26 [7]

Answer:

1/4

Step-by-step explanation:

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3 years ago

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Point M is on line segment overline LN . Given MN = 3x , LN = 4x + 9 , and LM = 2x + 7 determine the numerical length of LM .

xxTIMURxx [149]

Answer: 11

Step-by-step explanation:just trust me

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3 years ago

7- a. What is the radius of the circle with center (3,10) that passes through (12,12)?

loris [4]

Answer: a. Radius of circle = $\sqrt{85}$

b. The equation of this circle : $(x-3)^2+(y-10)^2=85$

Step-by-step explanation:

Given : Center of the circle = (3,10)

Circle is passing through (12,12).

a. To find the radius we apply distance formula (∵ Radius is the distance from center to any point ion the circle.)

Radius of circle = $\sqrt{(12-3)^2+(12-10)^2}$

Radius of circle = $\sqrt{(9)^2+(2)^2}=\sqrt{81+4}=\sqrt{85}$

i.e. Radius of circle = $\sqrt{85}$

b. Equation of a circle = $(x-h)^2+(y-k)^2=r^2$ , where (h,k)=Center and r=radius of the circle.

Put the values of (h,k)= (3,10) and r= $\sqrt{85}$ , we get

$(x-3)^2+(y-10)^2=(\sqrt{85})^2$

$(x-3)^2+(y-10)^2=85$

∴ The equation of this circle : $(x-3)^2+(y-10)^2=85$

6 0

3 years ago

Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for t

Viefleur [7K]

Each term differs by -68 and the first term is -68, we have:

$a_{n}=a_1-68(n-1) \implies \\ a_{n}=a_1-68n+68 \implies\\ a_n=-68-68n+68 \implies \\ a_n=-68n$

As an expession it's just -68n.

6 0

3 years ago