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Bond [772]
3 years ago
11

Help me this I don't understand this one show work pls

Mathematics
1 answer:
sammy [17]3 years ago
5 0

Answer:

x = 1/2

Step-by-step explanation:

10^-3x * 10^x = 10^-2x = 10^-1

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Am I on the right track?
alekssr [168]

if you want to be sure :/

7 0
4 years ago
What is an equivalent expression for 3a + 6ab + 9ab - 3(a + ab)?
Troyanec [42]
The given expression is 3a+6ab+9ab-3(a+ab)

We see from the possible answers they are all in reduced form - variables are grouped together. That means we should also reduce the given expression to see which answer is equivalent to it.

3a+6ab+9ab-3(a+ab)

Let's expand the term inside the parentheses first, by multiplying each term inside by the coefficient of the parentheses, -3.
3a+6ab+9ab-3a-3ab

Now let's group terms which have the same variables.
3a-3a+6ab+9ab+3ab

We can see that there are two groups:
3a-3a
6ab+9ab-3ab

Let's evaluate them separately. We just need to reduce each group now, since we've already grouped similar terms.
3a-3a=0
6ab+9ab-3ab=12ab

If we put the groups back together into the expression,
3a-3a+6ab+9ab-3ab=(3a-3a)+(6ab+9ab-3ab)=0+12ab=12ab

We can see that 3a+6ab+9ab-3(a+ab)=12ab. So (D) is the answer. Hope this helped.
6 0
4 years ago
What number completes this sentence12/18=x/30
BartSMP [9]
Cross multiplying:-
18*x = 12*30
x = 360 / 18

x = 20 answer
5 0
3 years ago
PLEASE HELP 100 POINTS AND BRAINLIEST IF RIGHT
Makovka662 [10]

Answer:

40 meters

Step-by-step explanation:

since a =b*h

area - a

base - b

height - h

so a/h = b    (\frac{a}{h} = b)

plug in area and height

160/4 = 40 (meters)

hope this helps:)

7 0
3 years ago
Read 2 more answers
Please help! :(<br><br>plz plz plz
Lerok [7]

When is says "__ and __ have a product of 126", it means __×__=126

The answers are 9 and 14 because 9×14=126.

5 0
3 years ago
Read 2 more answers
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