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Elena-2011 [213]
3 years ago
13

2+3a+9a what do I do for this answer

Mathematics
1 answer:
Bond [772]3 years ago
4 0

Answer:

you can collect like terms

Step-by-step explanation:

so

2+12a

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What do i type? please help me.
sergij07 [2.7K]

Answer:

x = 10; x = 0

Step-by-step explanation:

x < 29 means x is less than 29. Any number less then 29 is a solution.

For example, pick x = 10. Since 10 < 29, x = 10 is a solution. How do we know x = 10 is a solution?

We start with x < 29.

Now replace x with 10.

10 < 29

Since 10 < 29 is a true statement, then x = 10 is a solution.

Now pick another number less than 29. For example, oick 0.

x = 0 is a solution.

Proof:

x < 29

Replace x with 0:

0 < 29

Since 0 < 29 is a true statement, then x = 0 is a solution.

You can give more solutions just by picking any numbers that are less than 29, such as 1, 2, 3, 15, 28, 23, -5, -18, etc.

Answer: x = 10; x = 0

4 0
3 years ago
Read 2 more answers
Helpp pleaseeee ASAP<br><br>​
Leokris [45]

Answer:

the triangle would be getting twice as big because 12÷6=2 so you would have to multiply all the sides by 2

4 0
3 years ago
a woman saves $300 a month for 12 months for the next 12 months .How much does she save in total???????
Debora [2.8K]

Answer:

$3600

Step-by-step explanation:

she saves $300 a month for 12 months.

300×12=3600

hope this helps!

5 0
3 years ago
Determine if the two triangles are congruent. if they are, state how you know.
Sonbull [250]

Answer:

they are congruent

Step-by-step explanation:

they have the same points

8 0
3 years ago
The radius of a sphere was measured and found to be 20 cm with a possible error in measurement of at most 0.02 cm. What is the m
Elena L [17]

Answer:

D(V)  = 100,48 cm³

Step-by-step explanation:

The volume of a sphere is:

V(s) = 4/3 π*r³

Where r is the radius of the sphere

If we take derivative of V  respect r

D(V)/ dr  =  4/3*3*π*r²    ⇒ D(V)/ dr  = 4*π*r²   ⇒ D(V) =  4*π*r²*dr

We know:

r = 20 cm     and   dr  =  0,02  ( at most)

Then

D(V)  = 4*π*(20)²*0.02  cm³

D(V)  = 32*π      

D(V)  = 100,48 cm³

7 0
4 years ago
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