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Katarina [22]
3 years ago
6

Solve for x. 42-3x=30. Please and thank you! will mark brainliest!

Mathematics
2 answers:
o-na [289]3 years ago
4 0
X=4

Explanation: 42-3x=30
So you subtract 42 on each side leaving you with -3x=-12 and then you divide by -3 on each side meaning -12/-3 which leaves you with x=4



olganol [36]3 years ago
3 0

Answer:

x = 4

Step-by-step explanation:

Isolate the variable by diving each side by factors that don't contain the variable.

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What is the value of 500$ invested at 4% interest compounded annually for 7 years
DiKsa [7]

Answer:

657.96

Step-by-step explanation:

use formula A=P(1+r/n)^nt

A=500(1+.04/1)^1*7

A=500(1.04)^7

A=500(1.3159~)

A= 657.96~

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3 years ago
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4 0
3 years ago
Is 45 greater than 451/2
slava [35]

Answer:

No, it is not

Step-by-step explanation:

In order to compare the two numbers, start by simplifying 451/2

451 ÷ 2 = 225 R1

452/2 = 225 1/2

225 1/2 _ 45

225 1/2 > 45

5 0
3 years ago
Read 2 more answers
Could someone help me answer this? <br> Solve -2log8(x + 1) = -8.<br> Thanks so much!
drek231 [11]
Step one, divide both sides by -2
log8(x+1)=4

if the base is 10, and the 8 is together with (x+1): (cannot tell from the way it is written)
8(x+1)=10^4=10000
x+1=1250
x=1249

if the 8 is a base, 
8^4=(x+1)
x+1=4096
x=4095
8 0
3 years ago
Even more trig ratios see attachment
egoroff_w [7]

Step-by-step explanation:

1. Use the Pythagorean theorem to solve for side KM:

  • 16^2+KM^2=34^2
  • 256+KM^2=1156
  • KM^2=900
  • KM=30

2. Cosine is adjacent over hypotenuse, so cosine of M would be KM/34, or 30/34

3. Tangent is opposite over adjacent, so tangent of L will be KM/16, or 30/16

4. Sine is opposite over hypotenuse, so sine of M will be 16/34

5. KM=30, solved for in step 1.

hope this helps!!

4 0
3 years ago
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