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3 years ago

Which of the following is not an equivalent expression to -12 - 7x?

Mathematics

1 answer:

Art [367]3 years ago

3 0

THE CORRECT ANSWER IS -7X+{-12}

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I need help please.

Rudiy27

Answer:

0.167, 0.164, 0.16

Step-by-step explanation:

In decimals, the closer it is to 1 the larger it gets. 0.167 is smaller than 0.164 because 0.164 is closer to one, which makes it greater.

8 0

3 years ago

What are the solutions of the quadratic equation (x + 3)(x +3) = 49? Ax = -2 and x = -16 Bx = 2 and x = -10 Cx = 4 and x = -10 D

Ivahew [28]

Answer:

4 and -10

Step-by-step explanation:

$\displaystyle (x + 3)(x +3) = 49 \\ x^2+3x+3x+9=49 \\ x^2 +6x+9=49 \\ x^2 + 6x + 9 - 49 = 0 \\x^2+6x-40=0 \\\\ \Delta=b^2-4ac \\ \Delta=6^2-4 \cdot 1 \cdot (-40) \\ \Delta=36+160 \\ \Delta=196 \\ \\ X_{1,2}=\frac{-b \pm \sqrt{\Delta} }{2a} \\ \\ X_1=\frac{-b+\sqrt{\Delta} }{2a} = \frac{-6+14}{2} = \frac{8}{2}=4 \\ \\ X_2=\frac{-b-\sqrt{\Delta} }{2a} = \frac{-6-14}{2}=\frac{-20}{2} = -10$

4 0

3 years ago

Pleaseeee helppppp❤️

ankoles [38]

Answer:

The expression will be simplified into $26x^4y^3+35xy^6-42xy^5\\$

Step-by-step explanation:

It's like addition, when you multiply exponents that are on the same bases as each other.

6 0

3 years ago

Does an exponent multiply the variable or the whole term?

Novosadov [1.4K]

Answer:

yes it's 6x 6x 6x

Step-by-step explanation:

6 0

2 years ago

Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning.

VARVARA [1.3K]

Answer:

h = a + b * t, this equation gives you the height of the candle after t hours, where:

h = height of the candle

t = hours of burning

a = the y intercept

b = the slope

Step-by-step explanation:

In your problem says that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. This means that the independent variable is t (hours of burning) and the dependent variable is h (height of the candle).

A linear function has the following form:

y = f(x) = a + bx

a is the constant term or the y intercept. It is the value of the dependent variable when x = 0.

b is the coefficient of the independent variable. It is also known as the slope and gives the rate of change of the dependent variable.

NOTE:

In order to find numerical values you need at least two points in order to find the slope (t1,h1), (t2,h2), with this equation:

b = $\frac{h_{2} - h_{1}}{t_{2} - t_{1}\\ } \\$

Next you find a when x = 0, y = a, where y is one of the points that you want to evaluate.

With these values you put them in this equation h = a + b * t and that's it! You will find the height of the candle after t hours.

5 0

3 years ago