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tiny-mole [99]
3 years ago
12

Please help:) I dont understand these Will name brainliest

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
6 0

Answer:

The third one is

but I am unsure of the other two I will try to figure it out right now

Step-by-step explanation:

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Solve the equation 25z2 + 140 = −29 by using square roots.
Mice21 [21]

Answer:

13i/5

Step-by-step explanation:

25z^2+140=-29      subtract 140 from both sides

25z^2=-169          now square root both sides.

\sqrt{25z^{2} }=\sqrt{-169}     a negative root forms i

5z=13i                    

z=13i/5

5 0
3 years ago
Read 2 more answers
Which graph shows the points (−112, 12) and (1.5, −0.5) plotted correctly? On a coordinate plane, a point is 0.5 units to the ri
chubhunter [2.5K]

Answer:

Graph 'B' represents the correct graph.

The correct graph is attached below.

Step-by-step explanation:

Let 'A' be the point:

  • A\left(-1\frac{1}{2},\:\frac{1}{2}\right)

Let 'B' be the point:

  • B\:\left(1.5,\:-0.5\right)

As point A(-1 1/2, 1/2) can be written as:

A=\left(-\frac{3}{2},\:\frac{1}{2}\right)=\left(-1.5,\:0.5\right)

so plotting the point A=\left(-1.5,\:0.5\right)\:\:\:\: and B\:\left(1.5,\:-0.5\right) on a B\:\left(1.5,\:-0.5\right).

  • As we know that the 2nd quadrant, in the upper left-hand corner, consists of negative values of x and positive values of y.

Thus, the point A(-1.5, 0.5) will be plotted in the 2nd quadrant at x = -1.5 and y=0.5

i.e. at x= -1.5, y = 0.5

  • As we know that the 4th quadrant, the lower left-hand corner, consists of positive values of x and negative values of y.

Point B(1.5, -0.5) will be plotted in the 4th quadrant at x = 1.5 and y = -0.5

i.e. at x= 1.5, y = -0.5

Thus, graph 'B' represents the correct graph.

The correct graph is attached below.

6 0
3 years ago
Read 2 more answers
If x=square root of 6 and y^2=12 then 4/xy=
vova2212 [387]
Y² = 12
y = 2√3

x = √6

Now, 4 /xy
= 4/2√3√6
= 2 / 3√2
= √2/3

In short, Your Answer would be √2 / 3

Hope this helps!
5 0
4 years ago
Read 2 more answers
What is the Answer I need the real answer I’m stuck on it
lara31 [8.8K]

Answer:

multiply both sides by 3x + 7

Step-by-step explanation:

this will eliminate the fraction in the equation and therefore make it easier to isolate x

hope this helps :)

5 0
3 years ago
Brian’s school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without r
Fed [463]
50% percent the number is odd or higher 
5 0
3 years ago
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