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EastWind [94]
3 years ago
8

Suppose S is between R and T. Use the Segment Addition Postulate to solve for y.

Mathematics
1 answer:
ehidna [41]3 years ago
8 0

Answer:

3

Step-by-step explanation:

S is a point on line segment RT.

So RS+ST=RT.

(7y-1)+(y+5)=28

Combine like terms:

8y+4=28

Subtract 4 on both sides:

8y=24

Divide both sides by 8:

y=3

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TWO QUESTIONS PLS HELP ASAP
ASHA 777 [7]
Answer: 4. (-1,-1) 3. (3,-2)

4)

Set the equations equal to each other.

4x+3=-x-2

Subtract 3 from both sides

4x=-x-5

Add x to both sides

5x=-5

Divide both sides by 5

x=-1

Next, replace x with -1 in either equation to find y.

-(-1)-2=y

-1=y


3)

Do the same thing for this one and set them equal to each other

-2x+4=-1/3x-1

Add 1 to both sides

-2x+5=-1/3x

Add 2x to both sides

5=5/3x

Divide both sides by 5/3

x=3

Next, replace x with 3 in either equation

-2(3)+4=y

-2=y




4 0
3 years ago
Estimate a 10% tip on a bill of $158.71 by first rounding the bill amount to the nearest ten dollars.
irga5000 [103]

158.71 rounded to the nearest ten dollars would be $160.00

 then to estimate 10% since 10% starts with a 1, just remove the zero from both numbers

 so 160 becomes 16

 the tip would be $16

5 0
3 years ago
PLEASE SHOW YOUR WORKING OUT
dimulka [17.4K]
0.8
you find how much he needed so:
24*0.3=7.2
than 8 he had , so whats left over
8-7.2=0.8
7 0
3 years ago
Read 2 more answers
Write some thing good in answer.
frosja888 [35]

Answer:

till 15 days.

Do fast..

U can earn 5 dollars also

message me your email password

8 0
3 years ago
Select the correct answer.
mixas84 [53]

The inverse of matrix is (43, -11, 2).

<h3>What is inverse of matrix?</h3>

A matrix is a multidimensional generalization of the concept of reciprocal of a number: the product between a number and its reciprocal is equal to 1; the product between a square matrix and its inverse is equal to the identity matrix.

given equation:

x + 5y + 10z = 8

y + 4z = -3

x+6y + 15z = 7

The cofactors of the matrix is

C_11 = -9

C_12= 4

C_13=-1

C_21 = -15

C_22= 5

C_23 = -1

C_31= 10

C_32= -4

C_33= 1

​

The cofactor matrix is,

\left[\begin{array}{ccc}-9 & 4 & -1\\-15 & 5 & -1\\10 & -4 & 1\end{array}\right]

The transpose of matrix,

\left[\begin{array}{ccc}-9 & -15 & 10\\4 & 5 & -4\\1 & -1 & 1\end{array}\right]

The determinant of matrix is = 21.

The augmented matrix is attached below

Hence, the inverse of matrix is (43, -11, 2).

Learn more about this concept here:

brainly.com/question/13253064

#SPJ1

6 0
2 years ago
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