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3 years ago

2) Tell whether each statement about the expression 5y + 9 is True or False

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

4 0

Answer:

True.

Step-by-step explanation:

A variable term is a term with a variable. 5y is your only variable term; therefore, it only has one variable term.

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3×-18=42 Solve for x!

Keith_Richards [23]

3x - 18 = 42
3x = 42 + 18
3x = 60
x = 60/3
x = 20

7 0

3 years ago

The dot product of u with itself is 12. What is the magnitude of u?

Brilliant_brown [7]

Dot product is
a*b = |a|*|b|*cosα.
In our case
u*u =|u|*|u|*cos 0
u*u =|u|*|u|
12=|u|²
|u|=√12=√(4*3)=2√3
Answer: <span>D. 2√3</span>

5 0

3 years ago

Solve the system of equations by graphing. x+y=-9 4x+y=-19

shutvik [7]

For this case we have the following system of equations:

$x + y = -9\\4x + y = -19$

We multiply the first equation by -4:

$-4x-4y = 36$

We have the following equivalent system of equations:

$-4x-4y = 36\\4x + y = -19$

We add the equations:

$-4x + 4x-4y + y = 36-19\\-3y = 17\\y = - \frac {17} {3}$

We find the value of the variable "x":

$x = -9-yx = -9 - (- \frac {17} {3})\\x = -9 + \frac {17} {3}\\x = \frac {-27 + 17} {3}\\x = - \frac {10} {3}$

Thus, the solution of the system is:

$(x, y): (- \frac {10} {3}, - \frac {17} {3})$

See the graphic in the attached image

ANswer:

$(x, y): (- \frac {10} {3}, - \frac {17} {3})$

See the graphic in the attached image

4 0

3 years ago

24 POINTS!!!!!!!!!!!!!!!

inessss [21]

Scale factors are multipiled
a times scale factor turns into b

so
0.5 times scale factor=0.8
divide both sides by 0.5
scale factor=1.6
the scale factor is 1.6

4 0

3 years ago

Hi Have a good day :)

GarryVolchara [31]

Answer:

Thank you so much!!

Step-by-step explanation:

Have a good day also :)

4 0

3 years ago

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