3 years ago

Find the value of each expression -7+12+15

Mathematics

1 answer:

lutik1710 [3]3 years ago

5 0

Answer:

Step-by-step explanation:

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F(x) = 2x² + x at (-1, 1)

lord [1]

Answer:

$f(x) = 2 {x}^{2} + x \\ at \: that \: point \: given \: \: x = - 1 \\ f(x) = 2 {( - 1)}^{2} + ( - 1) \\ f(x) = 2 - 1 \\ f(x) = 1$

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3 years ago

A cricular arena is lit by 5 lights equally spaced around the perimeter of the arena. What is the measure of each angle formed b

Kitty [74]

Answer:

108°

Step-by-step explanation:

Suppose that circle with center A is a circular arena. Points B, C, D, E and F are 5 lights. These 5 points form regular pentagon (because these 5 lights are equally spaced around the perimeter of the arena).

The sum of all interior angles of pentagon can be calculated using following formula

$(n-2)\cdot 180^{\circ},\\ \\(5-2)\cdot 180^{\circ}=3\cdot 180^{\circ}=540^{\circ}$

All interior angles in regular pentagon are of equal measure, so

$\dfrac{540^{\circ}}{5}=108^{\circ}$

Thus, the measure of each angle formed by the lights on the perimeter is 108°.

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4 years ago

Given the points (4,-1) and (3,5), find the slope A.) 6 B.) -6 C.) 1/6 D.) -1/6

stepan [7]

Answer: slope is -6

equation is y=-6x+23

Step-by-step explanation:

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3 years ago

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Annette [7]

Answer:

you need to put in a question for it to be answered

Step-by-step explanation:

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Find the function value. f(x) = x + 5, g(x) = x^2 - 9 and h(x) = x^2 - 10x + 7; (h • g)(5)=

tekilochka [14]

Use Ga_thMath(u) (brainly doesn't allow me to type it) To use the app u need to take a pic of the problem and then it will process it and you'll get ur answer ASAP(most of the time). Many questions have been asked before so search it on brainly.

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