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SVEN [57.7K]
3 years ago
14

Select the quadratic that has roots x=8 and x=-5 a x^2 + 3x -40

Mathematics
1 answer:
sergiy2304 [10]3 years ago
4 0
If x = 8, then the factor is (x - 8); likewise, if x = -5, then the factor is (x + 5).  FOIL those together and get B
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3 T-shirts cost $12. How<br> much will 50 T-shirts<br> cost?
LekaFEV [45]

Answer:

$200

Step-by-step explanation:

First, find the unit rate:

12/3= 4

Then multiply:

4*50= 200

Hope this helps!

6 0
2 years ago
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lidiya [134]
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3 0
3 years ago
Consider the sequence 3, 6, 12, 24, 48, .... (a) Write a recursive rule to represent the sequence. (b) Write an explicit rule to
saveliy_v [14]

Answer:

  a. a[1] = 3; a[n] = 2a[n-1]

  b. a[n] = 3·2^(n-1)

  c. a[15] = 49,152

Step-by-step explanation:

Each term of the given sequence is 2 times the previous term. (This description is the basis of the recursive formula.) That is, the terms of the given sequence have a common ratio of 2. This means the sequence is geometric, so the formulas for explicit and recursive rules for a geometric sequence apply.

The first term is 3, and the common ratio is 2.

<h3>(a)</h3>

The recursive rule is ...

  a[1] = 3

  a[n] = 2×a[n-1]

__

<h3>(b)</h3>

The explicit rule is ...

  a[n] = a[1]×r^(n-1)

  a[n] = 3×2^(n-1)

__

<h3>(c)</h3>

The 15th term is ...

  a[15] = 3×2^(15-1) = 3×2^14

  a[15] = 49,152

5 0
2 years ago
The ratio of the same side interior angles of two parallel lines is 33:3. Find the measures of all eight angles formed by the pa
zheka24 [161]

9514 1404 393

Answer:

  all 4 acute angles: 15 degrees

  all 4 obtuse angles: 165 degrees

Step-by-step explanation:

The sum of same-side interior angles between parallel lines is 180°. The smallest of them will be 3/(33+3) = 1/12 of 180°, or 15°. The largest will be 180° -15° = (33/3)(15°) = 165°. All remaining angles are congruent to one or the other of these.

  All four acute angles are 15°; all four obtuse angles are 165°.

4 0
3 years ago
Which expression is equivalent to<img src="https://tex.z-dn.net/?f=18x%5Csqrt%7B14x%5E8%7D%2F6%5Csqrt%7B7x%5E4" id="TexFormula1"
Pani-rosa [81]

The equivalent expression is 3x^4\sqrt{2} . Option B

<h3>How to determine the expression</h3>

Given the expression

= \frac{18x\sqrt{14x^8} }{6\sqrt{7x^4} }

Divide the multipliers, we have

= \frac{3x\sqrt{14x^8} }{7x^4}

Let factorize the numerator in square root

= \frac{3x \sqrt{7x^4 * 2x^4} }{7x^4}

Eliminate the like factor in both the numerator and denominator

= 3\sqrt{2x^4}

Let's bring forth the 'x' factor, we have

= 3x^4\sqrt{2}

Thus, the equivalent expression 3x^4\sqrt{2} . Option B

Learn more about algebraic expression here:

brainly.com/question/723406

#SPJ1

4 0
1 year ago
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