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ratelena [41]
2 years ago
6

Find the value of y when x=7. y=____

Mathematics
2 answers:
DanielleElmas [232]2 years ago
7 0
78+x=85, therefor, y=85
yarga [219]2 years ago
3 0

In this case, 7 is being added to the odometer which already reads 78. If you add 7 to 78, you get 85. Meaning y = 85!

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Which of these equations, when solved, gives a different value of x than the other three? 9.1 = -0.2x + 10 10 = 9.1 + 0.2x 10 –
Rzqust [24]

1) 9.1 = -0.2x + 10         | - 10

9.1 - 10 = -0,2x + 10 - 10

-0.9 = -0.2x            | × 10

-0.9 × 10 = -0.2x × 10

-9 = -2x               | ÷ (-2)

-9 ÷ (-2) =  -2x ÷ (-2)

9/2 = x

x = 4.5

2) 10 = 9.1 + 0.2x         | - 9.1

10 - 9.1 = 9.1 + 0.2x - 0.9

0.9 = 0.2x             | × 10

0.9 × 10 = 0.2x × 10

9 = 2x              | ÷ 2

9 ÷ 2 = 2x ÷ 2

9/2 = x

x = 4.5

3) 10 - 0.2x = 9.1             | - 10

-0.2x = -0.9                | × 10

-2x = -9               | ÷ (-2)

x = 9/2

x = 4.5

4) 9.1 - 10 = 0.2x

-0.9 = 0.2x              | × 10

-9 = 2x                | ÷ 2

-9/2 = x

x = -4.5

Answer: The last one equation gives a different value of x.

7 0
3 years ago
Read 2 more answers
A triangle with one angle larger than 90° is called a(n) triangle.
Ahat [919]

Answer:

Step-by-step explanation:

Obtuse

Best regards

8 0
3 years ago
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Rudy says that the sum of the measures of the exterior angles of a regular hexagon is 720°. Is Rudy correct? Why or why not?
Leviafan [203]

Answer:

Yes, Rudy is correct

Explanation:

Number of sides of a hexagon = 6

The sum of all interior angles of a polygon with n sides  = (n-2)*180

Here, since a regular hexagon has 6 sides, n = 6

= (6 - 2)*180

= 4*180

= 720 degrees

<em>Hope it helps :)</em>

<em>Have a great day!</em>

7 0
2 years ago
Read 2 more answers
Which of the following is not a perfect square A)49 B)121 C)144 D)88
sergey [27]
49 is 7(7)

122 is 11(11)

144 is 12(12)

So D. 88 is the imposter here.
4 0
3 years ago
P=m/1+rt solve for t
blagie [28]
I assume you mean:

P=m/(1+rt)  multiply both sides by (1+rt)

P(1+rt)=m  perform indicated multiplication on left side

P+Prt=m  subtract P from both sides

Prt=m-P  divide both sides by Pr

t=(m-P)/(Pr)
5 0
3 years ago
Read 2 more answers
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