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yaroslaw [1]
2 years ago
9

Use the working backward method to find the solution of the equation.

Mathematics
2 answers:
shusha [124]2 years ago
4 0
Y=2 explanation because -1 on both sides divide both sides by 7
Dahasolnce [82]2 years ago
3 0

Answer:

y=2

Step-by-step explanation:

7y-1=13

+1 +1

7y=14

/7 /7

y=2

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Solve equation by completing the square round to the nearest hundredth if necessary <br> X2-4x-=5
kipiarov [429]

Answer:

x=-1 and x=5

Step-by-step explanation:

we have

x^{2} -4x=5

Solve it by completing the square method

We take the coefficient of x that is -4, divide it by 2 and then square it

so

-\frac{4}{2}=-2

square it

(-2)^2 = 4

Adds 4 both sides

x^{2} -4x+4=5+4

Combine like terms right side

x^{2} -4x+4=9

Rewrite as perfect squares

(x-2)^{2}=9

take square root both sides

x-2=\pm3

x=2\pm3

therefore

x=2+3=5

x=2-3=-1

6 0
3 years ago
Help geometry bisecting angles
dusya [7]

Since the angles are bisecting < RSU = < UST

substitution----- 4x+16=9x-9

subtract 4x from both sides----- 16=5x-9

add 9 to both sides-----25=5x

divide by 5 on both sides------ 5=x

The value of x is 5

substitute the value of x in both expressions

1st expression: 4x+16

substitute the value of x------ 4(5)+16= 20+16=36

2nd expression: 9x-9

substitute the value of x-----9(5)-9=45-9=36

< RST= <RSU+<UST

<RSU=36 degrees

<UST= 36 degrees

------------------------------------you have calculated both above-------------------------------------------

m<RST= 36 + 36=72 degrees


4 0
3 years ago
Help. Will give brainly if correct 50 points, No wrong answers.
ExtremeBDS [4]
B and C are the answers
6 0
3 years ago
Read 2 more answers
) Alon started in 60% of his team's basketball games this season. He started a total of 12 games. About how many games did Alon'
kvv77 [185]

Answer:

D

Step-by-step explanation:

Let x = total number of basketball games that was played by the team this season.

Alon started in 60% of his team’s basketball games this season. This means that he started in a total number of 60 percent of x basketball games this season.

60% of x basketball games this season = 60/100 × x

= 0.6×x = 0.6x

From the information given, Alon started a total of 12 basketball games this season. Therefore,

0.6x = 12

x = 12/0.6 = 20

7 0
3 years ago
HELP
Ira Lisetskai [31]

Answer:

166

Step-by-step explanation:

5/2=2.5

415/2.5

=166

8 0
3 years ago
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