3 years ago

Brainliest need help

1 answer:

4 0

Answer:

$p(71 < \times < 85) \\ = p( \frac{71 - 78}{4} < z < \frac{85 - 78}{4} ) \\ = p( - 1.75 < z < 1.75) \\ =1 - (\phi(1.75)) \\ = 0.46 \times 100\%\\ = 46\%$

You might be interested in

I need help this one is even harder please

RUDIKE [14]

Answer:

$-7\frac{1}{7}$

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Which is a zero of the quadratic function f(x) = 16x2 + 32x − 9?

Margaret [11]

The zeros are x=-2.25 and x=0.25

9 0

3 years ago

If the hypotenuse of a right triangle measures 15 cm and one of the legs measures 12 cm, what is the length of the other leg?

Mama L [17]

Step-by-step explanation:

12 to the 2nd power=144

15 to the 2nd power =225

225-144=81

square root of 81 is 9

5 0

3 years ago

Order these rational numbers in order from least to greatest 1/5 and -0.4 and -1/4 and 0.5

natita [175]

-0.4, -1/4, 1/5, 0.5

7 0

3 years ago

A line has a slope of -4 and passes through the point (2,-5) <br> which is the equation of the line

dimulka [17.4K]

We will be using the Point Slope formula which is $y-y_{1} =m(x-x_{1} )$

The information we are given is that m = -4 and the point is (2,-5), so we can input it into the equation.

$y- (-5) = -4(x-2)$

This simplifies into $y+5 = -4x +8$

Then we can subtract 5 from each side to get the answer:

$y = 4x+3$

6 0

3 years ago