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gregori [183]
3 years ago
12

To find 12×13 I double 13 and halve 12 and multiply what's an exspression for this

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
4 0
Expression: x × y = x/2 × 2y
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-7h+3(4-6h)=127 is h= 25?
GREYUIT [131]

Answer:

No, h = (-23)/5

Step-by-step explanation:

Solve for h:

3 (4 - 6 h) - 7 h = 127

3 (4 - 6 h) = 12 - 18 h:

12 - 18 h - 7 h = 127

-18 h - 7 h = -25 h:

-25 h + 12 = 127

Subtract 12 from both sides:

(12 - 12) - 25 h = 127 - 12

12 - 12 = 0:

-25 h = 127 - 12

127 - 12 = 115:

-25 h = 115

Divide both sides of -25 h = 115 by -25:

(-25 h)/(-25) = 115/(-25)

(-25)/(-25) = 1:

h = 115/(-25)

The gcd of 115 and -25 is 5, so 115/(-25) = (5×23)/(5 (-5)) = 5/5×23/(-5) = 23/(-5):

h = 23/(-5)

Multiply numerator and denominator of 23/(-5) by -1:

Answer:  h = (-23)/5

4 0
3 years ago
5. Find the product. 10 • –5 • –4 • 3 = ? (1 point) –600 –500 500 600
vladimir2022 [97]

Answer:

600

Step-by-step explanation:

10*-5=-50*-4=200*3=600

The answer is 600.

8 0
3 years ago
Read 2 more answers
Help plz!!!!!!!!!!!!!!!!!!!!!!!!!!!!
blondinia [14]
0.329 is a rational number because the decimal stops. If it had continued on and on with no particular pattern, it would have been irrational. It can be a fraction too (329/1000)...

127.5 is a rational number because again the decimal ends. It can also be converted into a fraction which is another sign that it is rational (127 1/2)...

-89 is a rational number because negatives are rational numbers. It is also in the category of an integer, which means that is a rational number also...

The last one is a non-perfect square, which means no number squared could ever give you 101. When you solve for it, it is also a non-terminating decimal.
8 0
3 years ago
Help!!! I need the CORRECT ANSWER!
Crazy boy [7]

Answer:

<h2>second one in the top</h2>

.................

3 0
3 years ago
Sarah wants to print copies of her artwork. At the local print shop, it costs her $1 to make 5 copies and $5 to make 25 copies.
Nata [24]

Answer:

$20

Step-by-step explanation:

5 copies cost $1.

25 copies cost $5.

So you have to do 100/5=$20 for 100 copies.

6 0
3 years ago
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