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ratelena [41]
3 years ago
13

Combine like terms. What is a simpler form of each expression? 30 - 5d - C + 3d

Mathematics
2 answers:
borishaifa [10]3 years ago
4 0

30 - 5d - c + 3d

In this equation there are two numbers which have the letter d with them. These would be like terms.

You have -5d + 3d which equals -2d

The simplified form would be 30 -2d -c

satela [25.4K]3 years ago
3 0

Answer:

30 -C -2d

Step-by-step explanation:

30 - 5d - C + 3d

Combine like terms

30  -C - 5d + 3d

30 -C -2d

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I need help with these 2 problems I cant figure out.
Alla [95]

I started by labeling the right angle (Angle C) 90º. Next, I wrote down everything in one equation.

2x + 90 + 3x - 20 = 180º (180 degrees in a triangle)

Next, I add 20 on both sides.

2x + 90 + 3x = 200º

I combine like terms (2x and 3x)

5x + 90 = 200º

I subtract 90 from both sides.

5x = 110º

Divide 110 by 5 to get x.

x = 22

======

For problem two, I label all the angles I know.

49º + 80º + r = 180º

I add 80 and 49.

129º + r = 180º

I subtract 180 and 129 and get 51º, which is your angle for R.

For angle X, you know that angle R plus angle X equals half of a circle, which is 180º

We know from before that 129º is 180º without R, so X is 129º

I hope this helps! Let me know if I'm wrong!

5 0
3 years ago
In the diagram of Triangle ABC: DR Il AC, DB=6, AD=2, and DE=9.Find AC
katen-ka-za [31]
12 because db/ad = 3 and ab = 8
thus de+(de/3) is the answer 
12 <- answer
3 0
3 years ago
Find the missing side. Round your answer to the nearest tenth.
nikdorinn [45]

Answer:

sin\left(90\right)/x=sin\left(25\right)/16

x = 37.85

Step-by-step explanation:

4 0
2 years ago
Scientific notation of 47300
Reil [10]
4.7 x 10^4
or 5 x 10^4

<span>The scientific notation of 70, 030, 000. To find the scientific notation of this value </span><span><span>
1.  </span>We first move the period which separates the whole number from the decimal number which is located after the numbers of the given value.</span> 
<span><span>2.  </span>We move it in the very recent order number which is seventy million, seven and zero.</span> <span><span>
3.  </span>It becomes 7.003</span>
<span><span>4.  </span>Thus we count how many moves we did from the tens to the ten million order place.</span> <span><span>
5.  </span>7.003 x 10^7 </span>


6 0
3 years ago
Darren buys a concert ticket for 33.01$ the original price was 34.75 what percent discount was the the concert ticket
pav-90 [236]

Answer:

Roughly 5%

Step-by-step explanation:

.05*34.75=1.74

34.75-1.74=33.01

7 0
2 years ago
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