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Kay [80]
3 years ago
6

The line passing through the point (-2,5)and (1,a) is perpendicular to the line 2x-y-5=0, find the value of a​

Mathematics
1 answer:
timofeeve [1]3 years ago
8 0

Answer:

a = 7/2

Step-by-step explanation:

2x - y - 5 = 0

2x = y + 5

y = 2x - 5

m = -1/2

y - 5 = -1/2(x - (-2))

y - 5 = -1/2(x + 2)

y - 5 = -x/2 - 1

y = -x/2 + 4

a = -1/2 + 4

a = 7/2

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At the beginning of the week, a puppy weighed 5 1/4 pounds. During the week, the puppy gains 8 ounces.
lys-0071 [83]

Answer:

5 3/4

Step-by-step explanation:

8 ounces is half (1/2) of a pound

1/2 is equivalent to 2/4

So I added 5 1/4 and 2/4

Which gives us 5 3/4

5 0
2 years ago
Can someone help me plz
wolverine [178]

Answer:

75°

Step-by-step explanation:

Recall: SOH CAH TOA

Reference angle = ? = θ

Side length opposite to reference angle = 27

Hypotenuse length = 28

Apply SOH, which is:

sin(\theta) = \frac{Opposite}{Hypotenuse}

Substitute

sin(\theta) = \frac{27}{28}

\theta = sin^{-1}(\frac{27}{28})

\theta = 75 degrees (nearest degree)

7 0
3 years ago
Krystal made 8 quarts of soup on Monday 5 quarts of soup on Tuesday and 5 quarts of soup on Wednesday. If she serves each guest
vazorg [7]

Answer:

To get the answer you need to add these together to find the total number of quarts she made.

8+5+5= 18 quarts of soup.

If everyone gets one cup, then 18 people are able to get soup.

The answer is 18 guests.

Step-by-step explanation:

Hope this helps!

5 0
3 years ago
Read 2 more answers
Someone please help, i don't have a lot of time
topjm [15]
<span>Pythagorean triple
a^2 + b^2 = c^2
so
5^2 + 12^2 = 13^2
25 + 144 = 169
169 = 169

answer is D. last one 5, 12 , 13</span>
4 0
3 years ago
Kray sells personalized photo frames. She charges $12 for the frame plus $0.25 for each letter the customer wants to engraved on
VARVARA [1.3K]

Answer:

c=0.25n+12

Step-by-step explanation:

6 0
3 years ago
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