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3 years ago

Answers please and thank u

Mathematics

1 answer:

Grace [21]3 years ago

3 0

Answer:

(6,1)

Step-by-step explanation:

graph the slope y=2/3x-3

x+y=7

subtract the x

y=-x+7

new slope^

graph that starting at the point (0,7) and going down one over one {next point would be (1,6) and so forth}

select the point in which both lines intersect which would be (6,1)

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3 years ago

Expand logarithms equation

Bess [88]

Answer:

$log_2(x) + log_2(y) + log_2(z)$

Step-by-step explanation:

$5log_2(xyz)^{1/5}\\\\5log_2(x)^{1/5} + 5log_2(y)^{1/5} + 5log_2(z)^{1/5}\\\\log_2(x) + log_2(y) + log_2(z)$

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3 years ago

When the sum of 5 and three times a positive number is subtracted from the square of the number, 0 results. Find the number.

Juliette [100K]

$x-the\ number\\\\x^2-(5+3x)=0\\\\x^2-5-3x=0\\\\x^2-3x-5=0$

$Use\ the\ quadratic\ formula:\\a^2x+bx+c=0\\\\\Delta=b^2-4ac\\\\if\ \Delta > 0\ then\ x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\if\ \Delta=0\ then\ x_0=\dfrac{-b}{2a}\\\\if\ \Delta < 0\ then\ no\ solution$

$x^2-3x-5=0\\\\a=1;\ b=-3;\ c=-5\\\\\Delta=(-3)^2-4\cdot1\cdot(-5)+3+20=29 \ \textgreater \ 0\\\\\sqrt\Delta=\sqrt{29}\\\\x_1=\dfrac{3-\sqrt{29}}{2\cdot1}=\dfrac{3-\sqrt{29}}{2} \ \textless \ 0\\\\x_2=\dfrac{3+\sqrt{29}}{2\cdot1}=\dfrac{3+\sqrt{29}}{2} \ \textgreater \ 0$

$Answer:\ \boxed{x=\dfrac{3+\sqrt{29}}{2}}$

6 0

3 years ago

Can yoy please help solve yhis problem.2/5b+1=11

shusha [124]

Answer:

(2/5)*b+1 = -11 // + 11

(2/5)*b+1+11 = 0

2/5*b+12 = 0 // - 12

2/5*b = -12 // : 2/5

b = -12/2/5

b = -30

Step-by-step explanation:

hope this helped :)

5 0

3 years ago

Read 2 more answers

Please help.................................................................................................

Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

L = 3*w + 1 Given

P = 2*(L + w) Formula for Perimeter. Substitute for L

P = 2*(3w + 1 + w) Combine

P = 2*(4w + 1)

P = 58 Given

58 = 8w + 2 Remove the brackets

58 - 2 = 8w Subtract 2

56 = 8*w Divide by 8

56/8 = w

7 = w

================

Find L

L = 3*w + 1

L = 3*7 + 1

L = 22

================

Check

2L + 2W = 58

2*22 + 2*7 =? 58

44 + 14 = ? 58

58 = 58

The answer checks.

5 0

3 years ago

Answers please and thank u​

Answers please and thank u