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kondaur [170]
3 years ago
11

Simplify 5(×-y)-(x-y)

Mathematics
2 answers:
Grace [21]3 years ago
8 0

Answer:

4x -4y

Step-by-step explanation:

5(x-y)-(x-y)

Distribute

5x -5y - x +y

Combine like terms

5x -x -5y +y

4x -4y

Talja [164]3 years ago
6 0

Answer:4x-4y

Step-by-step explanation:

5(x-y)-(x-y)

open brackets

5x-5y-x+y

Collect like terms

5x-x-5y+y

4x-4y

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On a coordinate grid what is the distance from g 2,8 to h 2,5
Anika [276]
(2, 8), (2, 5)

Just subtract the numbers that aren't the same.

8 - 5 = 3

So the distance is 3.
5 0
3 years ago
Read 2 more answers
Please help it’s for a test whoever answers correct I’ll give you a Brainly
WITCHER [35]

Answer:

they both charge the same cost per linear feet

Step-by-step explanation:

It appears that each company has a base charge for installation, which is the dollar value where each line begins at the y-axis. Both lines have the same slope and if you count, the cost is $75 per 5 linear feet.

8 0
3 years ago
A college job placement office collected data about students’ GPAs and the salaries they earned in their first jobs after gradua
frez [133]

Answer:

X is the GPA

Y is the Salary

Standard deviation of X is 0.4

Standard deviation of Y is 8500

E(X)=2.9

E(Y)=47200

We are given that The correlation between the two variables was r = 0.72

a)y = a+bx

b = \frac{\sum(x_i-\bar{x})(y_i-\bar{y})}{\sum(x_i-\bar{x})^2} = \frac{r \times \sqrt{var(X) \times Var(Y)}}{Var(X)} =  \frac{0.72 \times \sqrt{0.4^2 \times 8500^2}}{0.4^2} = 15300

a=y-bx = 47200-(15300 \times 29) = 2830

So, slope =  15300

Intercept =  2830

So, equation : y = 2830+15300x

b) Your brother just graduated from that college with a GPA of 3.30. He tells you that based on this model the residual for his pay is -$1880. What salary is he earning?

y = 2830+15300 \times 3.3 = 53320

Observed salary = Residual + predicted = -1860+53320 = 51440

c)) What proportion of the variation in salaries is explained by variation in GPA?

The proportion of the variation in salaries is explained by variation in GPA = r^2 = (0.72)^2 =0.5184

8 0
3 years ago
Further mathematics: Find the derivative of the function x^2 y + (xy)^3 +3x=0 at (-1 , 3)​
vesna_86 [32]

Answer:

3.

Step-by-step explanation:

Implicit differentiation:

x^2 y + (xy)^3 + 3x = 0

x^2 y + x^3y^3 + 3x = 0

Using the product rule:

2x* y + x^2*dy/dx + 3x^2 y^3 + x^3* (d(y^3)/dx) + 3 = 0

2xy + x^2 dy/dx + 3x^2 y^3 + x^3* 3y^2 dy/dx + 3 = 0

dy/dx(x^2 + 3y^2x^3) =  (-2xy - 3x^2y^3 - 3)

dy/dx=  (-2xy - 3x^2y^3 - 3) / (x^2 + 3y^2x^3)

At the point (-1, 3).

the derivative =  (6 - 81 - 3)/(1 -27)

= -78/-26

=  3.

8 0
2 years ago
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Please helppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!
Olin [163]

So here, ABCD is being inscribed in a circle, so ABCD is a cyclic quadrilateral (as inscribed in a circle) also, there exists a property of cyclic quadrilateral, i.e, the sum of opposite angles of a cyclic quadrilateral is 180°, so we can just write the following equation using this :

{:\implies \quad \sf y^{\circ}+83^{\circ}=180^{\circ}}

{:\implies \quad \sf y^{\circ}=180^{\circ}-83^{\circ}}

{:\implies \quad \sf y^{\circ}=97^{\circ}}

{:\implies \quad \boxed{\bf{y=97}}}

6 0
2 years ago
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