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Komok [63]
3 years ago
14

How to find the missing values for each 45,45,90 o 30,60,90 triangle

Mathematics
1 answer:
Sedaia [141]3 years ago
4 0
All three numbers have to have a equal multiple.
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3(2x - 4) + x = 9<br> help with homework
natita [175]

6x - 12 + x = 9

6x + x - 12 = 9

Collect like terms

7x - 12 = 9

Add both sides 12

7x - 12 + 12 = 9 + 12

7x = 21

Divide both sides by 7

7x ÷ 7 = 21 ÷ 7

x = 3

7 0
3 years ago
Read 2 more answers
Solve for x.<br> 4<br> 15<br> 6<br> X<br> x = [?]<br> Enter the number in decimal form
posledela

Answer:

66

Step-by-step explanation:

x / 6 + 4 = 15

To find x ;

Subtrac4 from both sides

x / 6 + 4 - 4 = 15 - 4

x / 6 = 11

Multiply both sides by 6

x / 6 * 6 = 11 * 6

x = 66

Value of x = 66

6 0
3 years ago
X - 13 = x + 1 is it true
natulia [17]

Answer:

No it is wrong

Step-by-step explanation:

let's say the number is 15 is a substract 13 I get 2 but let's take 15 again of I add one I have 16 so it's incorrect

7 0
3 years ago
Read 2 more answers
How can i prove this one
Ivenika [448]
Okay, this is my proof. I'm not exactly sure if this is a viable proof, but I think it works.

f(x) = lnx
f'(x) = \frac{1}{x}

Hence, from x > 0, it is always increasing (gradient > 0)
y = lnx crosses the x-axis only once, so there is only one root.

Since x cannot be less than zero, as well as a monotonic increasing function for x > 0, and the fact that it crosses the x-axis once, then as x approaches 0 from the positive side, f(x) has to be approaching negative infinity.
5 0
3 years ago
How many factors are in the expression 2w(w+9)
Delvig [45]
There are 3 factors in the expression which are 2w w and 9
4 0
3 years ago
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