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3 years ago

Here’s an update someone helped me get this and it didn’t work

Mathematics

1 answer:

AfilCa [17]3 years ago

5 0

Answer:

Left side

Ca(OH)2 --> Ca + 2 O + 2 H

2 HBr --> 2 H + 2 Br

Together: Ca + 2 O + 4 H + 2 Br

You have only 1 Br and only 3 H. So you must correct this.

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Graph y−5=−2/3(x+9) using the point and slope given in the equation.

pishuonlain [190]

Answer:

(-1.5, 0), (0, -1)

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3 years ago

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Which inequality represents all values of x for which the product below is defined

zavuch27 [327]

Answer:

(-∞, -2) ∪ (0, ∞)

Step-by-step explanation:

Multiply together the (7x) and the (x+2), obtaining 7x^2 + 14x. This is the correct argument (input) to Answer A.

Since the domain of the square root function includes "all real numbers equal to or greater than 0," we set 7x^2 + 14x = to 0. This factors to the original 7x*(x+2), set equal to 0. The roots are 0 and -2.

These two values create three intervals: (-∞, -2), (-2, 0) and (0, ∞).

Choosing test numbers, one from each interval: {-5, -1, 1}.

7x^2 + 14x is + at x = -5, - at x = -1, and + at x = 1.

Thus, the domain of this function is (-∞, -2) ∪ (0, ∞). In other words, the product shown is defined on (-∞, -2) ∪ (0, ∞).

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3 years ago

Write a 3-digit number using the digits 5,9,and 2. Then write your number using words.

viva [34]

592, five ninety two

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3 years ago

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Find the missing angle.

cestrela7 [59]

Answer:

85 degrees

Step-by-step explanation:

The angles in a quadrilateral add to 360 degrees, so x+109+96+70=360.

This means that x=360-109-96-70=85 degrees

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2 years ago

Evaluate the expression. [(3–5)(34)]3 1 Innermost group, apply the product of powers: [3–1]3 2 Apply the power of a power: 3–3 3

Otrada [13]

Answer:

x=27

Step-by-step explanation:

To evaluate the expression: $[(3^{-5})(3^4)]^3$

Step 1: Innermost group, apply the product of powers ( $a^x \times a^y =a^{x+y}$

Therefore:

$(3^{-5})(3^4)=3^{-5+4}=3^{-1}$

We then have:

$=[3^{-1}]^3$

Step 2: Apply the power of a power

$[3^{-1}]^3=3^{-1 \times 3} =3 ^{-3}$

Step 3: Apply the negative exponent

$3 ^{-3} =\dfrac{1}{3^3}$

Step 4: Simplify

$\dfrac{1}{3^3}=\dfrac{1}{27}$

Therefore, the value of x in the simplified expression is 27.

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3 years ago