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shutvik [7]
3 years ago
15

Solve each equation for y:

Mathematics
2 answers:
strojnjashka [21]3 years ago
4 0

Answer:

Solve each equation for y:y^2 -1=80(y-4) divided by 4=110-63 divided by y=1

Step-by-step explanation:

sammy [17]3 years ago
3 0

Step-by-step explanation:

{y}^{2}   - 1 = 80

{y}^{2}  = 81

y = ±9

\frac{y - 4}{4}  = 1

y - 4 = 4

y = 8

\frac{10 - 63}{y}  = 1

10 - 63 = y

- 53 = y

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Keiko is mixing 4 cups of concrete to make a stepping stone. She needs 1.5 cups of sand and 2.5 cups of cement mix. Which statem
Charra [1.4K]
Ur answer would be B.. Hope it helps let me know if its right or not!
8 0
3 years ago
Your friend claims that because each midsegment is half as long as the corresponding side of the triangle, the perimeter of the
lora16 [44]
Answer:
The claim is correct

Explanation:
Assume the given triangle ABC
perimeter of triangle ABC = AB + BC + CA ............> I

Now, we have:
D is the midpoint of AB, this means that:
AD = DB = (1/2) AB ..........> 1
E is the midpoint of AC, this means that:
AE = EC = (1/2) AC ...........> 2
DE is the midsegment in triangle ABC, this means that:
DE = (1/2) BC ...........> 3
perimeter of triangle ADE = AD + DE + EA
Substitute in this equation with the corresponding lengths in 1,2 and 3:
perimeter of triangle ADE = (1/2) AB + (1/2) BC = (1/2) AC
perimeter of triangle ADE = (1/2)(AB+BC+AC) .........> II

From I and II, we can prove that:
perimeter of triangle ADE = (1/2) perimeter of triangle ABC
Which means that:
perimeter of midsegment triangle is half the perimeter of the original triangle.

Hope this helps :)

7 0
3 years ago
What is true of a geometric straight line? A) one-dimensional B) two-dimensional C) three-dimensional D) no dimensions, only pos
Lubov Fominskaja [6]
A. the answer is one dimension

5 0
4 years ago
Read 2 more answers
I the radius of a circle is x cm ,what is the length of circufernece?​
nordsb [41]

Answer:

44x/7

Step-by-step explanation:

Radius=r=xcm

Circumference=2πr

➜2πx

➜2×22/7×x

➜44/7×x

➜44x/7

4 0
3 years ago
To win the game, Elena has to roll an even number first and a number less than 3 second. Her probability of winning is 6/36.
Nitella [24]

<u>Answer:</u>

  • Prob (Marta winning) < Prob (Elena winning) : Case 1st, 3rd & 5th
  • Prob (Marta winning) = Prob (Elena winning) : Case 2nd
  • Prob (Marta winning) > Prob (Elena winning) : Case 4th

<u>Step-by-step explanation:</u>

Elena outcomes of winning, first even no. & second no. = 3 : (2,1) , (2,2) , (4,1) , (4,2) , (6,1) , (6,2). So, Probability (Elena willing) = favourable outcomes / total outcomes = 6 / 36

  • Margie dice sum '7' outcomes = (2,5) , (5,2) , (3,4) , (4,3). So, Prob = 4/36
  • Margie dice sum '6' outcomes = (1,5) , (5,1) , (2,4) , (4,2) , (3,3). So, Prob = 6/36
  • Margie dice sum '2' or '9' outcomes = (1,1) , (3,6) , (6,3) , (4,5) , (5,4). Prob = 5/36
  • Margie dice sum '>9' outcomes = (3,6) , (6,3) , (4,5) , (5,4) , (4,6) , (6,4) , (5,5) , (5,6) , (6,5) , (6,6). Prob = 10/36
  • Margie dice sum '>2,<5' outcomes = (1,2) , (2,1) , (2,2) , (1,3) , (3,1)  = 4/ 36
8 0
3 years ago
Read 2 more answers
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