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Irina18 [472]
4 years ago
15

Solve the equation -15 + 10y = 25 for y

Mathematics
2 answers:
Alex Ar [27]4 years ago
3 0

Answer:

Y=3

Step-by-step explanation:

10(y)

10*3=30

-15+30=25

son4ous [18]4 years ago
3 0

Answer:

y=4

Step-by-step explanation:

-15 + 10y = 25

10y = 25 + 15

10y = 40

y = 40/10 = 4

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HELPPPPPPP PLEASEEE
spin [16.1K]

Answer:

y = - \frac{5}{4} x - \frac{13}{4}

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y + 6 = \frac{4}{5}(x - 5) ← is in point- slope form

with slope m = \frac{4}{5}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{4}{5} } = - \frac{5}{4}

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - \frac{5}{4} , thus

y = - \frac{5}{4} x + c ← is the partial equation

To find c substitute (- 1, - 2) into the partial equation

- 2 = \frac{5}{4} + c ⇒ c = - 2 - \frac{5}{4} = - \frac{13}{4}

y = - \frac{5}{4} x - \frac{13}{4} ← equation of perpendicular line

3 0
3 years ago
Read 2 more answers
Angad was thinking of a number. Angad divides by 4, then adds 3 to get an answer of 7. What was the original number?
IRINA_888 [86]

Answer:

mh, 7

Step-by-step explanation:

7 0
3 years ago
Twice the difference of a number and 2 is 8
DedPeter [7]

Answer:

2x-2=8

Step-by-step explanation:

2x-2=8

2x=8+2

2×=10

2×÷2×=10÷2

×=5

6 0
4 years ago
Find the real solutions of the equation by graphing. 6x=9+x^2
Degger [83]
The solution of the equation is 3.
3 0
3 years ago
Read 2 more answers
2b) A farmer is building a pen inside a barn. The pen will be in the shape of a right triangle.
kenny6666 [7]

Answer:

Step-by-step explanation:

A)

the sum of any two sides of a right triangle more than any other side

14+15>29, x is less than 29

14+x>15

x>1

15+x>14

x>-1

1<x<29

lets use Pythagorean Theorem

14^(2)+15^(2)=c^2

196+225=c^2

421=c^2

plusminus sqrt(421)=c

distance can't be negative, so:

c=sqrt(421)

c=20.5182845287

sqrt(421) is the largest possible right triangle side

1<x\leqsqrt(421)

B) as we can see from above, the largest possible length of the third side is 14/sqrt(421) or about 20.5182845287ft

C)sqrt(421) by 14 by 15

tan(x1)=15/14

x1=tan^-1(15/14)

x1=47 degrees

tan(x2)=14/15

x2=tan^-1(14/15)

x2=43 degrees

7 0
3 years ago
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