Find the product (7v+8)(4v2 - 8v+1)
2 answers:
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The blank is -8
Step-by-step explanation:
Let us revise some rules of indices:
×
=
∵ ×
=
×
∵ All bases are equal
∴ Use the first and third rule above to find x
∵ ×
=
∴ ×
=
⇒ L.H.S
∵ ×
=
⇒ R.H.S
Equate L.H.S and R.H.S
∴ =
Equate the indices of the two sides
∴ -3 = 5 + x
- Subtract 5 from both sides
∴ -8 = x
∵ x represents the blank
∴ The blank = -8
The blank is -8
Learn more:
You can learn more about the indices in brainly.com/question/4419221
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Answer:
<u>1 cm is equal to -----------> 0.001 dekameters </u>
<u>so </u>
<u>167 cm------------------> X </u>
<u>x=167*0.001------> x=0.167 dekameters </u>
Step-by-step explanation:
<em>Expression to finds Jamal’s height in dekameters </em>
<em>[Jamal’s height in cm]*0.001 or [Jamal’s height in cm]/1000</em>
