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3 years ago

What is the value of n when 7n-3=5n+5?

Mathematics

2 answers:

sp2606 [1]3 years ago

6 0

Answer:n=4

Step-by-step explanation:

7n-3=5n+5

subtract 5n from both sides

2n-3=5

add 3 to both sides

2n=8

divide both sides by 2

n=4

BartSMP [9]3 years ago

3 0

N=2
i think because you can’t subtract a number with a variable. they both have to have the same variable.

so 7n-5n= 2

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Sally was walking to Ocean Front Housing Complex, In miles, how far is her distance?

Vanyuwa [196]

Answer:

Sally is 10 miles

The coordinate ofthe deli is (1, -1)

Step-by-step explanation:

✍️Coordinate of Sally = (-3, 2)

Coordinate of Ocean Front = (5, -4)

The distance of Sally to Ocean Front Housing Complex = the distance between point (-3, 2) and (5, -4).

Use the distance formula, $d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$ , to calculate the distance between (-3, 2) and (5, -4):

$d = \sqrt{(5 -(-3))^2 + (-4 - 2)^2}$

$d = \sqrt{(8)^2 + (-6)^2}$

$d = \sqrt{64 + 36}$

$d = \sqrt{100} = 10$

✅The distance of Sally is 10 miles

✍️the coordinate of Deli would be half the distance between Sally and Ocean Front.

Therefore, use the midpoint formula to calculate the coordinate of the midpoint between Sally (-3, 2) and Ocean Front (5, -4).

Midpoint of (-3, 2) and (5, -4).

$M(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2})$

Plug in the values

$M(\frac{-3 + 5}{2}, \frac{2 +(-4)}{2})$

$M(\frac{2}{2}, \frac{-2}{2})$

$M(1, -1)$

✅The coordinate ofthe deli is (1, -1)

8 0

3 years ago

Please help i don’t understand this

swat32

Similar polygons only differ by a scaling factor. In other words, two polygons are similar if one is the scaled version of the other.

In particular, this implies that the angles are preserved, and the correspondent sides are in proportion.

These two polygons are both rectangles, so the angles are preserved. We must check the sides, and we have to check if the smaller sides are in the same proportion as the bigger sides.

So, the two rectangles are similar if the following is true.

$4\div 5 = 11\div 12$

In any proportion, the product of the inner terms must be the same as the product of the outer terms:

$4\cdot 12 = 5\cdot 11 \iff 48=55$

This is clearly false, and thus the two rectangles are not similar.

5 0

3 years ago

Help pleaseeeeeeeeee

lilavasa [31]

These three angles are on a line so must total 180°.
So 180-(52+58)=
180-110=70

So angle q is 70°.

7 0

3 years ago

Solve x^2 = 196 and c^3 = 216.

Vika [28.1K]

The answer is: B. x=+_14; c=6

Hope this helps, happy holidays!! :p

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3 years ago

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Does anyone know how to solve this? I don't even know how to start it ;-; please help, thanks

Maru [420]

These shapes are geometric, which means they're equal. XW would be the same as XY, which is 18. The same goes towards WZ. WZ = ZY, so it'll be 29. Remember, since it's geometric, each side has to equal each other

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3 years ago

What is the value of n when 7n-3=5n+5​?

What is the value of n when 7n-3=5n+5?