2 years ago

Solve the following system of equations using matrices: 4x + 5y = 40 X-y=1

Mathematics

1 answer:

Sergeeva-Olga [200]2 years ago

4 0

I think i’m not sure but i think the answer is (5,4) x=5 and y=4

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Let f(x)=−12(x+2)2+5 . What is the average rate of change for the quadratic function from x=−3 to x = 1?

aev [14]

Answer:

Average rate of change = -6

Step-by-step explanation:

The average rate of change over the interval (a,b) is given by;

[ f(b) - f(a)] / (b-a)........................where interval is (a,b)

(a,b) interval =(-3,1)

Where;

f(x)= -12 (x+2)² +5

$f(a)=f(-3)=-12(-3+2)^2+5\\f(a)=f(-3)=-12(-1)^2+5\\f(a)=f(-3)=-12(1)+5\\=-12+5=-7\\\\\\f(b)=f(1)=-12(1+2)+5\\f(b)=f(1)=-12(3)+5\\=-36+5=-31\\\\f(b)-f(a)=-31--7=-24\\\\b-a=1--3=4\\\\f(b)-f(a)/b-a=\frac{-24}{4} =-6$

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2 years ago

If a = mg - kv²/ m find , correct to the nearest whole number the value of V when a= 2.8 ,m= 12 ,g = 9.8 and k= 8/3

Harlamova29_29 [7]

Answer:

v = 22.59

Step-by-step explanation:

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5 0

3 years ago

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What word describes the equal shares of the shape?

timurjin [86]

<span>Partition describes the equal shares of a shape.
</span>

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3 years ago

Which of the following equations is equivalent to 3x + 4y =15

slavikrds [6]

Answer:

x= −4 /3 y+5

Step-by-step explanation:

5 0

3 years ago

S_A_V [24]

Answer:

Step-by-step explanation:

5 + 6 + 4 = 15

Small - 5/15 = 1/3

Large - 4/15 = 4/15

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3 years ago