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gladu [14]
3 years ago
7

Create the equation of the line that goes

Mathematics
1 answer:
Vaselesa [24]3 years ago
4 0

Answer:

The answer is

y = 19

Step-by-step explanation:

Since

y = mx + c \\ m = 0 \\ c = 19 \\ y = 0 \times x + 19 \\ y = 19

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A 60-watt light bulb advertises that it will last 1500 hours. The lifetimes of these light bulbs is approximately normally distr
Ad libitum [116K]

Answer:

The proportion of these light bulbs that will last less than the advertised time is 18.94% or 0.1894

Step-by-step explanation:

The first thing to do here is to calculate the z-score

Mathematically;

z-score = (x - mean)/SD

= (1500-1550)/57 = -50/57 = -0.88

So the proportion we will need to find is;

P( z < -0.88)

We shall use the standard score table for this and our answer from the table is 0.1894 which is same as 18.94%

8 0
3 years ago
I need help with this question.
SSSSS [86.1K]

Answer:

\displaystyle S_{27}=675

Step-by-step explanation:

The sum of N consecutive natural numbers is given by:

\displaystyle S_N=\frac{N}{2}(F+L)

We need to find the sum of the natural numbers between 12 to 38.

To calculate the required sum we have F=12, L=38, but we don't have the value of N.

From 12 to 38 there are 38 - 12 + 1 = 27 natural consecutive numbers, thus N=27.

Substituting in the formula:

\displaystyle S_{27}=\frac{27}{2}(12+38)

\displaystyle S_{27}=\frac{27}{2}(50)

\displaystyle S_{27}=27*25

\mathbf{\displaystyle S_{27}=675}

5 0
3 years ago
-6+2=<br> I also need help on how to show work
asambeis [7]

Answer:

-4

Step-by-step explanation: if the signs are different subtract the values and take the sign of the larger number!

- - - - - -

+ +

8 0
4 years ago
Naz is swimming the English Channel from France to England. A few minutes ago, she was swimming in calm waters at a velocity (sp
Jlenok [28]

Answer:

is this right

Step-by-step explanation:

This is a list of notable successful swims across the English Channel,[1] a straight-line distance of about 21 miles (34 km).[2]

3 0
3 years ago
A triangle has a angle of x, 40 and 30 what is the angle of x
kompoz [17]

Sum of interior angles of a triangle = 180°

x+40+30= 180°

x+ 70=180

x= 180-70

x= 110°

3 0
3 years ago
Read 2 more answers
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