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SVETLANKA909090 [29]
4 years ago
8

Please help asap!!! 16 points

Mathematics
1 answer:
Ahat [919]4 years ago
3 0
You are given a table in which each row represents the coordinates of points.  For example, in the first line, we have x=-7 and y=5.  Work through the four given equations, one at a time, subbing -7 for x and 5 for y; is the equation still true?  If yes, then you have found the correct answer.  B is the exception; I'd suggest you check out equations A, C and D first, before focusing on B.

Example:  D:  (5)-5 = 2((-7) + 7) leads to 0 = 0.  Is that true?  If so, D is likely the correct answer. 
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An animal shelter spends 5.50 per day to care for each bird and 8.50 per Day to care for each cat and a notice that the shelter
Deffense [45]

Answer:

19 birds

Step-by-step explanation:

First, I wrote my two equations:

5.5x +8.5y = 291.5

x + y = 41

Next, I got the variable y by itself in the second equation. Subtract x to get y = -x + 41. Then, I substituted what y equaled into the first equation. It should look like this: 5.5x + 8.5(-x+41) = 291.5. Distribute 8.5 to get 5.5x -8.5x + 348.5 = 291.5. Subtract 5.5x and 8.5x to get -3x. It should look like this: -3x + 348.5= 291.5. Subtract 348.5 from 291.5 to get -57. Now, you should have -3x = -57. Divide -3 from both sides, to get x = 19. So, there are 19 birds. If you want to go even further, 41-19= 22, which means there are 22 cats. Hope this helped!

6 0
3 years ago
Square root of 2025 by prime factorisation method​<br>Please explain step by step
Mice21 [21]

Answer:

45

Step-by-step explanation:2025....use the smallest prime number to divide the number 2025 till you get to a point were it can't be divided again . Group each prime number with a partner of its value like this :

5×5×3×3×3×3........ then use bracket to separate them like this (5×5)(3×3)(3×3)........ then take a number from each 5×3×3 then multiply to get 45

4 0
3 years ago
Explain how the commutative property of addition,the Associative property of addition and mental math can help you find 75.2+(57
4vir4ik [10]

Answer: The sum of 75.2+(57.376+24.8) is 157.376.

Explanation:

The commutative property of addition states that,

a+b=b+a

The associative property of addition states that,

a+(b+c)=(a+b)+a

The given expression is 75.2+(57.376+24.8).

First use commutative property of addition in the parenthesis.

75.2+(57.376+24.8)=75.2+(24.8+57.376)

Now use associative property of addition.

75.2+(24.8+57.376)=(75.2+24.8)+57.376

Now simplify the expression,

(75.2+24.8)+57.376=100+57.376

(75.2+24.8)+57.376=157.376

Therefore, the sum of 75.2+(57.376+24.8) is 157.376.

7 0
3 years ago
Read 2 more answers
How many times larger is 4 x 10^8 than 2 x 10^-5
True [87]

Answer:The answer is 8x10^7

Step-by-step explanationi took the thing

7 0
3 years ago
PLSS HELPP 25 POINTS AND BRAINLIEST
Dennis_Churaev [7]

Answer:

\Large \boxed{\sf 322.5 \ in^2}

Step-by-step explanation:

Find the area of the 4 triangles and add them.

Area of triangle = base × height × 0.5

(10 \times 15 \times 0.5 \times 3)+(15 \times 13 \times 0.5)= 322.5

8 0
3 years ago
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