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Nina [5.8K]
3 years ago
10

Evaluate the given expression x=-7. -3x-2

Mathematics
2 answers:
kirill115 [55]3 years ago
8 0

Answer:

Given- x=-7

p(x)= -3x-2

p(7)= -3(-7)-2

     = 21-2

     = 19

Hope this helped

Step-by-step explanation:

Ivanshal [37]3 years ago
7 0
-3(-7)-2=21-2=19 hope this helps
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Select all of the sequences of transformations that would return a shape to its original position.
Jlenok [28]

Answer:

Except d. Rotate 120 degrees around center c then rotate 220 degrees around again.

Step-by-step explanation:

For a. Translate 3 units up, then 3 units down is easy to see that this will return the square to its original position. Wherever we translate up and then down the same units a particularly shape this will return to its original position.

For b. Reflect over line p, then reflect over line p again

Wherever we have any particularly shape and we reflect over an arbitrary line twice, the shape will return to its original position. Particularly, the composition of two reflections over the same line is the identity function.

The identity function is the function that doesn't change the shape (It is the analogy of the multiplication by 1 with the common product between real numbers).

c. Translate 1 unit to the right, then 4 units to the left, then 3 units to the right.

The composition of this three translation will return the square to its original position (Same reasoning as a.)

d. Rotate 120 degrees around center c then rotate 220 degrees around c again.

Given that we choose an arbitrary center c and then chosen an arbitrary rotation sense (counterclockwise or clockwise), the composition of the two rotations is a 340 degrees rotation (given that we sum the degrees).

This transformation will not return a shape to its original position

(Of course, it exists some exceptions such as a rotation of a circle around its center. For any value of degrees, the rotation of a circle around its center will return the circle to its original position).

Generally, option d. is the correct option.

8 0
3 years ago
What is 3.2258 rounded to the nearest thousandth?
Alexxx [7]

Answer:

3.3000

Step-by-step explanation:

hope this helps

may i get braineist pls?

8 0
3 years ago
An alloy composed of nickel, zinc, and copper in a 4:1:2 ratio. How many kilograms of each metal are needed to make 35 kg of thi
gregori [183]

Answer:


Step-by-step explanation:

The ration of weight of nickel, zinc, and copper in an alloy is 4:1:2

The weight of alloy can be written as

4x + x + 2x = 35 Kg

7 x = 35 Kg

X = 35 Kg/7

X = 5kg

The weight of nickel the alloy = 4 x 5 = 20 Kg

The weight of zinc in the alloy= 1 x 5 = 5kg

The weight of copper in the alloy = 2 x 5 = 10 kg


7 0
4 years ago
Read 2 more answers
26=8+v como se resuelve?
posledela
26 = 8 + v
<span>Restar -8 de cada lado
v = 18</span>
6 0
4 years ago
Express sin 404 in terms of the sine of a positive acute angle.
34kurt
Sin404 = sin(360 + 44)
 as sin(360 + α) = sinα
 = sin44
4 0
4 years ago
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