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3 years ago

If not able to awnser say it in the comments

Mathematics

2 answers:

olga_2 [115]3 years ago

6 0

Answer:

Step-by-step explanation:

4y-9+4y simplified by combining like terms is 8y-9

Anna71 [15]3 years ago

4 0

Answer:

C. 4y - 9 + 4y

Step-by-step explanation:

C. 4y - 9 + 4y

Collect like terms:

4y + 4y - 9

Combine like terms:

8y - 9

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Lina20 [59]

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Exact steps are shown in the attached picture.

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3 years ago

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How many seats are there??

vazorg [7]

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3 years ago

Can I get some help? I don’t understand this :/

DIA [1.3K]

Together they equal 90 degrees.
Equation:
(0.1x - 22) + (0.3x - 54) = 90
Open parenthesis and simplify:
0.4x -76 = 90
0.4x = 166
DIvide:
Your final answer is x= 415
Hope this helps!

4 0

3 years ago

Let a = 10 ; and b = 2. With the given values, the equation below is true.

quester [9]

Answer:

The answer is:

$\frac{2a}{2b} = 5$

Step-by-step explanation:

Substitute the values of a and b into the equation

$a = 10&b = 2 \\ \\ \frac{2a}{2b} = 5 \\ \\so \frac{2(10)}{2(2)} = 5$

$\frac{20}{4} = 5 \\ \\ 5 = 5$

8 0

2 years ago

(a) A tram moved downward 72 meters in 8 seconds at a constant rate. What was the change in

Alex787 [66]

Answer:

a) 9 meters.

b) The total change in temperature was of 288ºC

Step-by-step explanation:

Both these questions can be solved using rules of three.

a) 72 meters in 8 seconds. How many meters it changes each second(in 1 second)?

8s - 72m

1s - x m

$8x = 72$

$x = \frac{72}{8}$

$x = 9$

9 meters.

b) In 1 hour, heated by 6ºC. How much in total during 48 hours?

1h - 6ºC

48h - xºC

x = 48*6

The total change in temperature was of 288ºC

3 0

3 years ago