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3 years ago

Need help on this please giving brainlest! :)

Mathematics

2 answers:

denis23 [38]3 years ago

6 0

Answer:

a) (-4, 5)

b) (4, -5)

Step-by-step explanation:

Just reverse the signs or use desmos as a better example.

Assoli18 [71]3 years ago

5 0

Answer:(4,-5) and (-4,5)

Step-by-step explanation: anything reflected from the x or y axis is the postive version which is -4 has an absolute value of 4

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When 2(3/5x+2 3/4 is simplified what is the resulting expression

Bas_tet [7]

Answer:

A. 1 7/10x+2 1/2y+6

B. 7/10x+2 1/2y+6

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3 years ago

Select the two values of x that are roots of this equation. x + 2x - 6 = 0

VLD [36.1K]

For this case we must solve the following quadratic equation:

$x ^ 2 + 2x-6 = 0$

Where:

$a = 1\\b = 2\\c = -6$

The solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting:

$x = \frac {-2 \pm \sqrt {2 ^ 2-4 (1) (- 6)}} {2 (1)}\\x = \frac {-2 \pm \sqrt {4 + 24}} {2}\\x = \frac {-2 \pm \sqrt {28}} {2}\\x = \frac {-2 \pm \sqrt {2 ^ 2 * 7}} {2}\\x = \frac {-2 \pm2 \sqrt {7}} {2}\\x = -1 \pm \sqrt {7}$

Thus, we have two roots:

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ANswer:

$x_ {1} = - 1+ \sqrt {7}\\x_ {2} = - 1- \sqrt {7}$

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3 years ago

Identify the characteristics of exponential functions.

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Answer:

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The domain is all real numbers.

The range is y>0.

The graph is decreasing.

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(These are just some of them by the way)

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

A building 84 ft high casts a 46 ft shadow. How tall is a building that casts a 110 ft shadow at the same time of the day? (to t

Bond [772]

The ratio of building heights will be the same as the ratio of shadow lengths.
(taller building)/(shorter building) = (longer shadow)/(shorter shadow)
(taller building)/(84 ft) = (110 ft)/(46 ft) . . . . . . fill in the given numbers
(taller building) = (84 ft)*(110/46) ≈ 200.9 ft . . multiply by 84 ft, evaluate

The appropriate selection is
D) 200.9 ft

4 0

3 years ago

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Need help on this please giving brainlest! :)​

Need help on this please giving brainlest! :)