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serious [3.7K]
3 years ago
5

Solve for 7 and 8 please

Mathematics
1 answer:
Masteriza [31]3 years ago
8 0
To divide exponents they have to have the same base and then you just subtract the bottom exponent from the top exponent.

7) k × 3^9
----------- =
3^5

k × 3^9-5 =
k × 3^4 =
k × 81 = 81k

8) x^4 × y^10 × 2^11
------------------------ =
y^8 × 2^7

x^4 × y^10-8 × 2^11-7 =
x^4 × y^2 × 2^4 =
x^4 × y^2 × 16=
16x^4y^2
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Write an equation in slope-intercept form of the line that passes through (7, 2) and (2, 12)
Anika [276]

Step-by-step explanation:

the general slope intercept form is

y = ax + b

a is the slope, b is the y-intercept (when x=0).

the slope is the ratio y/x indicating how much y changes, when x changes for a certain amount of units when going from one point to another.

going from (7, 2) to (2, 12) :

x changes by -5 (from 7 to 2), y changes by +10 (from 2 to 12).

so, the slope is 10/-5 = -2

therefore, we have already

y = -2x + b

we get b by using the coordinates of one of the points as x and y. e.g. (7, 2)

2 = -2×7 + b = -14 + b

16 = b

so, the full line equation is

y = -2x + 16

4 0
3 years ago
Is the ordered pair (-2,-2) a solution to th fiction y= 3x-8
Tema [17]

Answer:-24

Step-by-step explanation:

You multiply your numbers without the - or the +

You check ehich number is bigger and you use it symbol for the answer

Example: 3x8= 24

-8 is bigger than 3 so you use it symbol

= -24

7 0
3 years ago
Given rhombus ABCD, find area if<br> angleABC = 60deg<br> AE = 2
Nikolay [14]
All triangles are 30-60-90, therefore the short legs (2) are half as much as the hypotenuse. Therefore the hypotenuse is 4. Because its a rhombus, all sides are congruent, so you have the length and width and can multiply them to get 16 square units.

7 0
3 years ago
Joe owes his sister Lisa $12 and his sister kelly $18 his brother David owes joe $20. Joe writes the number -12 to represent the
klio [65]
The answer is David, because $20 is the biggest 

4 0
3 years ago
Plz help!!!!!!!!! Due soon!
oksian1 [2.3K]

Answer:

520 Students

Step-by-step explanation:

If you multipy 650 by .8 you will get 520 and that is the percentage of students that is going.

8 0
3 years ago
Read 2 more answers
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