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Bogdan [553]
3 years ago
13

Temp of 20* C will drop by 4*c

Mathematics
1 answer:
svp [43]3 years ago
4 0

Answer:

16* C

Step-by-step explanation:

This is simply 20 - 4

---> 20 - 4 = 16

=> Celcius (C)

Thus, 16° C

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“The line that passes through point H has the equation y=-2x -3”
Katena32 [7]

Answer:

Step-by-step explanation:

Generally

The equation of a line is given as

y = mx + c

Where

m is the slope

c is the intercept on y axis

Note: if two lines are parallel, their slopes are equal

I.e M1 = M2 =m

If two lines are perpendicular, then, their slopes are given as

M2 = - 1/M1

Given that,

The line that pass through the point H has an equation

y = -2x-3

From equation of a line, we know that, the slope of the line that passes through H is -2

m = -2

We want to find the equation of a line parallel to line that passes through H

If the line we want to find is parallel to the given line, then, their slope are equal,

So, the slope of line that passes through point G is m=-2

So, the equation of the line that passes through point G is

y = mx + c, m=-2

y = -2x + c

So, we need to find c, so, using the point G it passes through,

G = (2,1) I.e x = 2 and y = 1

y = -2x + c.

1 = -2(2) + c

1 = -4 + c

1+4 = c

c = 5

So, the equation of the line that passes through G becomes

y = -2x + 5

3 0
3 years ago
Micah buys 10 pens for every 2 pencils. Rachel buys 12 pens for every 3
Brrunno [24]

Answer:

no

Step-by-step explanation:

micah

10: 2

5:1

rachel

12: 3

4:1

7 0
3 years ago
A train travels 3.5 kilometers on a straight track with grade of 1 degree 10'. What is the vertical rise of the train distance?
denpristay [2]
The answer is 
h = AB sin tetha, 
tetha is <span>1 degree 10' = 1.1°, and AB = 3.5km

the vertical rise is h = 4.7</span>
3 0
3 years ago
I know it is basic but I need help<br><br>11m+13=m+23
zloy xaker [14]

Answer:

m = 1

Step-by-step explanation:

11m + 13 = m + 23

<u>Get m by itself by subtracting m from both sides. </u>

10m + 13 = 23

<u>Subtract 13 from both sides.</u>

10m = 10

<u>DIvide by 10.</u>

m = 1

8 0
3 years ago
Read 2 more answers
ASAP PLEASE HELP!!!
Mariulka [41]

Z score = (x -mean) /  standard deviation.

For this problem X = 50 cm.

Z-score = (50 - 49.2) / 1.8

Z score = 0.8 / 1.8

Z score = 0.44

Look up 0.44 on a z-score table.

0.44 = 0.6700

0.67 x 100 = 67% will be 50 cm or longer.

8 0
3 years ago
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