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Bezzdna [24]
2 years ago
7

Hello, I need help understanding this problem.

Mathematics
1 answer:
nadezda [96]2 years ago
5 0

Step-by-step explanation:

Given points M( -5 , 9) and N( -2 , 7)

Now mid point of MN

(x, y) =

( \frac{x1 + x2}{2}  \:  \:  \:  \:  \frac{y1 + y2}{2} )

= {(-5-2)/2 , (9 +7)/2}

= (-7/2 , 8)

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At 6:00 the outside air temperature was 15°F. By 8:00 the temperature had dropped 9°F, and by 11:00 I had dropped another 12°. W
laila [671]

Answer:

- 6°F

Step-by-step explanation:

Given :

Temperature at 6:00 = 15°F

Temperature dropped by 9°F by 8:00

Temperature by 8:00 = 15°F - 9°F = 6°F

Temperature dropped another 12°F by 11:00

Hence, Temperature at 11:00 will be :

6°F - 12°F = - 6°F

Temperature at 11:00 = - 6°F

8 0
3 years ago
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lawyer [7]

Answer:

day 2) 100

day 3) 140

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day 5) 220

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Step-by-step explanation:

the equation would be y= 40x + 20 since 20 is the starting price and everyday you add 40 dollars. put in what day it is as X to get the answer

8 0
2 years ago
Find the exact value by using a half-angle identity. sine of five pi divided by twelve
maks197457 [2]

Answer:

cos

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Explanation:

By the half angle formula:

XXXX

cos

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=

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12

XXXX

then  

θ

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5

π

6

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5

π

6

is a standard angle in quadrant 2 with a reference angle of  

π

6

so  

cos

(

5

π

6

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=

−

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=

−

√

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2

Therefore

XXXX

cos

(

5

π

12

)

=

±







⎷

1

−

√

3

2

2

XXXXXXXXXXX

=

±







⎷

2

−

√

3

2

2

XXXXXXXXXXX

=

±

√

2

−

√

3

4

XXXXXXXXXXX

=

±

√

2

−

√

3

2

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5

π

12

<

π

2

XXXX

5

π

12

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π

12

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3 0
2 years ago
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Write an equation in standard form that has a slope of 1/4 and crosses through the point (4, 3).
qaws [65]

slope intercept form

y -y1 = m(x-x1)

y-3 =1/4 (x-4)

distribute

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stand form of a line is Ax +by =c

so subtract 1/4 x from each side

y -3 -1/4 x =-1

add 3 to each side

y-1/4 x =2

-1/4 x +y =2

I would multiply by -4 on both sides to make the 1st term positive and get rid of the fraction

x -4y = -8


Find the slope of the line that crosses through the points (-3, -4) and (2, -3).

slope = (y2-y1)/(x2-x1)

m = (-3--4)/(2--3)

m = (-3+4)/(2+3)

m =(1/5)

m=1/5

8 0
3 years ago
Michael has 12 yards of yellow fabric and 6 yards of purple fabric. how many inches of yellow and purple fabric does Kelly have.
jasenka [17]

Answer:

648 inches

Step-by-step explanation:

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there are 36 inches in 1 yard

so there is 648 inches in 18 yards

5 0
2 years ago
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