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3 years ago

I^2=√-1 true or false

Mathematics

2 answers:

shusha [124]3 years ago

8 0

Answer:

It’s true

Step-by-step explanation:

SVETLANKA909090 [29]3 years ago

4 0

Answer:

im pretty sure its true :)

Step-by-step explanation:

Have a good day sorry if its wrong

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5 - 7(x + 1) + 10x + 3<br> Show step by step on how to solve for x

Svet_ta [14]

1+3x

Distribute -7 through the parenthesis

6 0

3 years ago

Suppose you buy a new car whose advertised mileage is 20 miles per gallon (mpg). After driving your car for several months, yo

Helen [10]

Answer:

$\frac{15,7 - 20}{1,26} = - 3,4$

Step-by-step explanation:

To determine the Z - score, it is calculated as follows:

$\frac{X - X_{avg} }{σ}$

Then:

$\frac{15,7 - 20}{1,26} = - 3,4$

It means that there are more than 3 standar deviations below the advertised mileage.

3 0

4 years ago

Let f(x) = x^2 +5 and G (x) = X+5/x. Find (gof)(-3)

tamaranim1 [39]

(gof)(-3) means the composition of two functions at x = -3.

(gof)(-3) can also be expressed as g(f(-3))

So, first we find f(-3)

f(x) = x² + 5

f(-3) = 9 + 5 = 14

g(f(-3)) = g(14)

g(14) = (14+5)/14 = 19/14

Thus, option C gives the correct answer

5 0

4 years ago

Find the midpoint of the line segment joining the points p1 and p2 <br> P1=(3,-5);p2=(5,-1)

swat32

Find mid pt formula is
$x \: intercept \: \frac{x {}^{2} + x{}^{1} }{2} \\ y \: intercept\frac{y {}^{2} + y {}^{1} }{2}$
so the answer is
$x \: intercept \: \\ \frac{3 + 5}{2} = 4$
$y \: intercept \: \\ \frac{( - 5) + ( - 1)}{ 2} = - 3$
mid pt is (4,-3)

6 0

4 years ago

Albert jumped 100 times in 97.5 seconds. Round off the time taken to the nearest second.

KonstantinChe [14]

Answer
98 seconds
Step by step explanation
The reason being is that .5 would be millisecond and 5 will round up making the answer be 98 seconds

5 0

3 years ago