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lara [203]
3 years ago
14

Solve. 3x^2 – 24x = –12

Mathematics
1 answer:
Tresset [83]3 years ago
5 0
3x(x-8)=-12
x(x-8)=-4
x²-8x+4=0

USE QUADRATIC FORMULA:

x=(<span><span><span>−b</span>±<span>√(<span><span>b2</span>−<span><span>4a</span>c))/</span></span></span></span><span>2<span>a
</span></span></span><span>x=<span>4+<span><span><span>2<span>√3</span></span><span> or </span></span>x</span></span></span>=<span>4−<span>2<span>√<span>3</span></span></span></span>
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The sum of 4 consecutive integers is 40 what is the third number in this sequence?
Dmitry [639]
Let's represent the numbers by : x, x+1, x+2, x+3
x+x+1+x+2+x+3=40                     The third number in the sequence is x+2
4x+6=40                                           8.5+2=10.5
4x+6-6=40-6                               Therefore the third number in the sequence is
4x=34                                             10.5
4x/4=34/4
x=8.5
3 0
3 years ago
Please help me again
gulaghasi [49]

Answer:

65 degrees

Step-by-step explanation:

<u>Step 1:  Find what the measure of JLK is</u>

JLM + JLK = 180

140 + JLK - 140 = 180 - 140

JLK = 40

<u>Step 2:  Find what the measure of KJL is</u>

KJL + JLK + JKL = 180

KJL + 40 + 75 = 180

KJL + 115 - 115 = 180 - 115

KJL = 65

Answer:  65 degrees

5 0
3 years ago
Evaluate the expression when a= 2.<br> a? +27
Troyanec [42]
Since a equals 2, 2 plus 27 is equal to 29. So your answer is 29. Hope that helped:)
7 0
3 years ago
If I invest 5,000 at a rate 8.5% for 13 days? How much interest will I earn on my investment if the interest is compounded daily
bogdanovich [222]

Using the formula A = P(1 + r/n)^nt

P = 5,000

r = 8.5% or 0.085

n = 365

t = 13/365 (13 days out of a year)

A = 5,000 (1 + 0.085/365)^365*13/365

A = 5015.16

You will earn $15.16


4 0
3 years ago
Number 17 help please
Shalnov [3]

the answer is b (-4+6)/2&(-4-6)/2

4 0
3 years ago
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