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Gemiola [76]
2 years ago
12

1. Solve the following system of equations, using matrix inversion method.

Mathematics
1 answer:
Jet001 [13]2 years ago
8 0

Answer:

x = 142/83

y = 111/83

z = 452/83

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Alecsey [184]
30 times greater I hope it helps unlike that other answer...
7 0
3 years ago
Can any kind soul help me ASAP!​
CaHeK987 [17]

Answer:

Hope it helps u

Step-by-step explanation:

As we know that ,

Mean = sum of the terms/ numbers of terms

But here grouped data is given so , we use the formula

Mean=∑[f. m]/ ∑f

where f is frequency and m is mid point of each height ,

Now first we have to find the mid point of each interval, where

midpoint of each interval = (lower boundary + upper boundary)/2

m1=(150+154)/2 = 152

m2=(155+159)/2= 157,now found other by same formula, for each interval

m3= 162

m4= 167

m5=172    Now we find the midpoint of each interval ,so now

∑[f. m]=f1*m1+f2*m2+f3*m3+f4*m4+f5*m5

now putting the values of each frequency for given interval and midpoint of each interval we will get,

∑[f. m]=456+942+1296+167*x+344 = 167*x+3038

Now find,

∑f=f1+f2+f3+f4+f5

∑f=19+x

Now we have,

∑[f. m]=167*x+3038

∑f=19+x

also given mean height=161.6 cm

putt these values in above equation we get,

161.6=\frac{167*x+3038}{19+x}

now solve this ,

161.6(19+x)=167*x+3038

3070.4+161.6*x=167*x+3038

3070.4-3038=167*x-161.6*x

32.4=5.4*x

x=32.4/5.4

<h2>x=6   Ans........</h2>

3 0
3 years ago
Hayley has 383 beads. She buys 49 more beads. She will use 78 beads to make bracelets and the rest to make necklaces. She will u
padilas [110]
44 necklaces rounded up (or 44.25)
8 0
2 years ago
Read 2 more answers
Can someone help me with this problem
TEA [102]

Answer:

y = 102, z = 67

Step-by-step explanation:

The angles 113 and z form a straight angle and are supplementary, thus

z = 180 - 113 = 67

The sum of the 4 interior angles of a quadrilateral = 360°

Sum the interior angles and equate to 360 for y

y + 102 + 89 + 67 = 360, that is

y + 258 = 360 ( subtract258 from both sides )

y = 102

3 0
2 years ago
The probability that the factory manufactures a defective light bulb is 0.02. find the probability that the plant manufactures 1
vodomira [7]
2 is the answer there u go have a good day
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