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avanturin [10]
3 years ago
6

What is -a^-2 if a = -5? (PLEASE HELP WILL MARK BRAINLIEST!!!)

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

-1/25

Step-by-step explanation:

-a^-2

-(-5)^-2

=-1/25

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How many solutions does the system have?<br><br><br><br> y=−2x+4y=x2−2x+4
zlopas [31]

Answer:

One solution

Step-by-step explanation:

we have

y=-2x+4 ---> equation A

y=x^{2}-2x+4 ---> equation B

Solve the system by graphing

Remember that the solution of the system is the intersection point both graphs

using a graphing tool

there's only one point of intersection

so

The solution is the point (0,4)

see the attached figure

therefore

The system of equations has only one solution

5 0
2 years ago
Plzz help in 3rd part of question 3​
ASHA 777 [7]

Answer:

X=28/9, Y=7/5

Step-by-step explanation:

By using Elimination method

Multiply equation 1 by 9 and equation 2 by 3/2

<h2>There you get those values listed above for <u>x</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>y</u></h2>
7 0
2 years ago
14. The current of a river is given by the
BaLLatris [955]

Answer:

27 Degree

Step-by-step explanation:

First Draw the graph (If you want)

Tan is what we have to use because TAN = Opposite / Adjacent

TanA=2/4

TanA=1/2

TanA=0.5

Tan^-1 x (0.5)

<A= 26.565...

ROUND TO THE NEAREST DEGREE = 27 Degrees

3 0
3 years ago
Easy + brainliest<br><br> 2x(^3) + 10x(^2) − 4x(^2)y − 20xy<br><br> factor this pls, (show all work)
Dimas [21]

Answer:

Answer:

2x • (x2 - 2xy + 5x - 10y)

Step-by-step explanation:

Step  1  :

Equation at the end of step  1  :

(((2•(x3))+(10•(x2)))-(22x2•y))-20xy

Step  2  :

Equation at the end of step  2  :

(((2 • (x3)) +  (2•5x2)) -  22x2y) -  20xy

Step  3  :

Equation at the end of step  3  :

((2x3 +  (2•5x2)) -  22x2y) -  20xy

Step  4  :

Step  5  :

Pulling out like terms :

5.1     Pull out like factors :

 2x3 - 4x2y + 10x2 - 20xy  =

2x • (x2 - 2xy + 5x - 10y)

Final result :

2x • (x2 - 2xy + 5x - 10y)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Please help due tonight
morpeh [17]

Answer: In pretty sure the answer is C im very much sorry if its not C

have a good day!

5 0
2 years ago
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