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Hoochie [10]
3 years ago
5

Evaluate the dot product of (5,7) and (-8,2)

Mathematics
1 answer:
Maslowich3 years ago
5 0
Recall the dot-product is just <a,b> • <c,d> => a*c + b*d.

therefore here is just 5*(-8) + 7* 2, or namely -26.
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\tt{}6x + 6y + 2

\tt{}2(3x + 3y + 1)

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2 years ago
ABC Bookstore sells one customer 12 used books and 4 new books for $136.
Natalka [10]

Answer:

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Step-by-step explanation:

system of equations

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2 years ago
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shepuryov [24]

\huge \bf༆ Answer ༄

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2 years ago
WILL GIVE BRAINLIEST Mr. and Mrs. Bailey hope to send their son to college in eleven years. How much money should they invest no
Ronch [10]

Mr. and Mrs. Bailey need to invest $2906.50 so as to send their son to college.

<h3>Compound interest</h3>

Compound interest is given by:

A=P(1+\frac{r}{n})^{nt}

where A is the amount after t years, P is initial amount, r is the rate and n is the times compounded per period

Given that n = 1, r = 9% = 0.09, A = $7500 t = 11. Hence:

7500=P(1+\frac{0.09}{1} )^{1*11}\\\\P=\$2906.50

Mr. and Mrs. Bailey need to invest $2906.50 so as to send their son to college.

Find out more on Compound interest at: brainly.com/question/24924853

7 0
2 years ago
What is the height, x, of the equilateral triangle?
e-lub [12.9K]

Using the Pythagorean Theorem, the height of the equilateral triangle is given by:

A. h = 7\sqrt{3} inches.

<h3>What is the Pythagorean Theorem?</h3>

The Pythagorean Theorem relates the length of the legs l_1 and l_2 of a right triangle with the length of the hypotenuse h, according to the following equation:

h^2 = l_1^2 + l_2^2

For this problem, we have that:

  • The height is one side of the triangle.
  • The other side is half the length, of 7 in.
  • The hypotenuse is the length, of 14 in.

Hence the height is found as follows:

h^2 + 7^2 = 14^2

h = \sqrt{147}

h = \sqrt{49 \times 3}

h = 7\sqrt{3} inches.

More can be learned about the Pythagorean Theorem at brainly.com/question/654982

#SPJ1

7 0
1 year ago
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