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Musya8 [376]
3 years ago
12

1) 5÷4=25÷y

Mathematics
1 answer:
emmasim [6.3K]3 years ago
5 0
1) \frac{5}{4}= \frac{25}{y} 

5y=100
y=20

2) \frac{x}{0.6} =  \frac{9}{0.5}
\frac{10x}{6} =  \frac{90}{5}
50x=540
x=10.8

3) 2x=12
x=6

4) x-7+x
2x-7

5) x-x+4=4

If you need explanation just ask.

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What is the number of sides of a regular n gon if one of the extierior angles is 40 degrees?
sertanlavr [38]
Sum of all exterior angles = 360°

Size of one exterior angle = 40°

Number of sides = 360 ÷ 40 = 9

-----------------------------------------------------------
Answer: There are 9 sides to this polygon.
-----------------------------------------------------------

4 0
3 years ago
Use the drawing tool(s) to form the correct answers on the provided grid. Consider the function g. For the x-value given in the
NeX [460]

Answer:

(-2,-12), (-1,-6), (0,-3) and (1,-3/2)

Step-by-step explanation:

g(x) = -3(1/2)^x

Putting values of x

x     g(x)

-2    -3(1/2)^-2 = -12

-1     -3(1/2)^-1 = -6

0     -3(1/2)^0 = -3

1      -3(1/2)^1 = -3/2

Now, making the graph we will plot

(-2,-12), (-1,-6), (0,-3) and (1,-3/2)

The graph is shown in figure below.

8 0
3 years ago
(x+40)(x+40) show steps
pishuonlain [190]

(x + 40) * (x + 40) =

(x + 40)² =

x² + 80x + 1600

6 0
3 years ago
Solve: x=4+(4x-4)1/2
Damm [24]

Answer:

x = 10

Step-by-step explanation:

x = 4 + (4x-4) ^ (1/2)

First, we rewrite the expression:

x = 4 + (4x-4) ^ (1/2)

x = 2 (2+ (x-1) ^ (1/2))

x = 4 + 2 (x-1) ^ (1/2)

From here we get a solution for x = 10

To check it we substitute x = 10 in the expression:

10 = 4 + 2 (10-1) ^ (1/2)

10 = 4 + 2 (9) ^ (1/2)

10 = 4 + 2 (3)

10 = 4 + 6

10 = 10

Answer:

The solution is:

x = 10

8 0
3 years ago
Read 2 more answers
Helppppppppppppppppp​
Elodia [21]

Answer:

hrs =4

Step-by-step explanation:

550-11

200-x

cross multiply

550x=200×11

550÷550=2200÷560

x=4

3 0
3 years ago
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