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cricket20 [7]
3 years ago
7

What is the value of k

Mathematics
1 answer:
Maslowich3 years ago
8 0

Answer:

k=10

Step-by-step explanation:

The sum of the two equations given is 115. Set both equal to 115 and solve.

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Tanya [424]
Yes .3 repeating is a real number
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Each scarf requires. Meters of yarn, and each beanie requires meters
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(2x - 3y)(4x - y) can you help me
Mnenie [13.5K]

Answer:

<h2>(2x - 3y)(4x - y) = 8x² - 14xy + 3y²</h2>

Step-by-step explanation:

Use FOIL:  <em>(a + b)(c + d) = ac + ad + bc + bd</em>

(2x - 3y)(4x - y) = (2x)(4x) + (2x)(-y) + (-3y)(4x) + (-3y)(-y)

= 8x² - 2xy - 12xy + 3y²

<em>combine like terms</em>

= 8x² + (-2xy - 12xy) + 3y² = 8x² - 14xy + 3y²

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An experiment started with 100 bacteria. They double in number every hour. Find the number of bacteria after 8 hours.
zzz [600]
There will be 25,6000
8 0
3 years ago
How do you solve this?
Novay_Z [31]

Let's solve your equation step-by-step.


−7x=−2x2+15


Step 1: Subtract -2x^2+15 from both sides.


−7x−(−2x2+15)=−2x2+15−(−2x2+15)


2x2−7x−15=0


Step 2: Factor left side of equation.


(2x+3)(x−5)=0


Step 3: Set factors equal to 0.


2x+3=0 or x−5=0


x=  \frac{-3}{2} or x=5

Answer:


x=    \frac{-3}{2} or x=5


Hope this helps

7 0
3 years ago
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