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dmitriy555 [2]
4 years ago
14

The expression (x2 - 5x - 2) - (-6x2 - 7x - 3) is equivalent to

Mathematics
1 answer:
Margarita [4]4 years ago
6 0

Answer:

7x² + 2x + 1

Step-by-step explanation:

(x² - 5x - 2) - (-6x² - 7x - 3)

Now, combine your like-terms together...

(x² - (-6x²)) + (- 5x - (-7x)) + (- 2 - (-3))

7x² + 2x + 1

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In ΔOPQ, q = 83 inches, p = 80 inches and ∠P=70°. Find all possible values of ∠Q, to the nearest degree
dsp73

Answer:

77.12°

Step-by-step explanation:

Given that:

In triangle OPQ

∠P=70°

line q = 83 inches

line p = 80 inches

To find ∠Q; we use the since rule:

\dfrac{Sin \ Q}{q} = \dfrac{Sin \ P}{p}

\dfrac{Sin \ Q}{83} = \dfrac{Sin \ 70}{80}

Sin \ Q= \dfrac{Sin \ 70 \times 83}{80}

\text{Sin \ Q= 0.9749}

Q=Sin ^{-1}( 0.9749)

\mathbf{Q = 77.12^0}

3 0
3 years ago
A gas at standard temperature and pressure was measured as having a mass of 1485 grams (g) in a volume of 750 liters (L). Which
tangare [24]

Answer:

Here we will use the relation:

Density = mass/volume.

We know that:

Mass = 1485g

Volume = 750L

Density = 1485g/750L = 1.98 g/L

We do not have the options in order to select the correct one, but knowing this density, we can suppose the possible gases.

Two "common" gases with densities similar to this one are:

Carbon Dioxide, with d = 1.977 g/L

Dinitrogen Monoxide, with d = 1.977 g/L

In both cases, if we round up we will get the same density that we calculated at the beginning, so either of these can be the correct option.

6 0
3 years ago
Please help important
Elina [12.6K]
D. 7/10 of newspapers and a. 1/8 pound
6 0
3 years ago
Suppose that y varies directly with x and y=12 when x=-2. What is x when y=-6<br> Please help me!!
hodyreva [135]

Answer:

x = 1 because when you multiply negative 2 by negative six you get twelve. when you multiply positive one by negative six you get negative six.

8 0
4 years ago
What sine function represents an amplitude of 1, a period of 2pi, a horizontal shift of our, and a vertical shift of -4
alexandr1967 [171]

ANSWER

g(x) =  \sin(x  +4)  - 4

EXPLANATION

The basic sine function is

f(x) =  \sin(x)

The transformed sine function has equation

g(x) = a \sin(bx  +c )  + d

where a=1 is the amplitude

2π/b=2π is the period

c/b= 4 is the horizontal shift 4 units left.

d=-4 is a downward vertical shift of 4 units.

The required sine function is:

g(x) =  \sin(x  +4)  - 4

4 0
4 years ago
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