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snow_lady [41]
3 years ago
5

Please help with this question ASAP! Thanks!

Mathematics
1 answer:
GaryK [48]3 years ago
4 0

Answer:

The equivalent expression is  8.25\cdot y -14.

Step-by-step explanation:

Let 4\cdot (1.75\cdot y -3.5)+1.25\cdot y, we proceed to simplify the expression by like terms and other algebraic operations:

1)  4\cdot (1.75\cdot y -3.5)+1.25\cdot y  Given

2) [1.75\cdot y +(-3.5)]\cdot 4 + 1.25\cdot y Commutative property/Definition of subtraction.

3) (1.75\cdot 4) \cdot y +(-3.5)\cdot 4 + 1.25\cdot y Distributive and associative properties.

4) 7\cdot y +(-14)+1.25\cdot y Definition of multiplication/a\cdot (-b) = - a\cdot b

5) (7+1.25)\cdot y -14 Commutative and distributive properties/Definition of subtraction.

6) 8.25\cdot y -14 Definition of addition/Result

The equivalent expression is  8.25\cdot y -14.

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What is an written expression for 20+5×9
BartSMP [9]

Answer:

Five times nine plus twenty

Step-by-step explanation:

Just remember the order of operations... multiplication and division are done first before adding and subtracting.

7 0
4 years ago
2.34 x 10^65   + 9.2 x10^66  
vivado [14]

Answer:

9.434 X 10^66

Step-by-step explanation:

2.34 X 10^65  +  9.2 X 10^66    (First, you have to manipulate the exponents to bring them to the same index, i.e. the same power)

We can say that 2.34 X 10^65 = 0.234 X 10^66

Now that the indexes are equivalent, we can proceed to add the two bases together.

0.234 X 10^66  +  9.2 X 10^66

= (0.234  +  9.2) X 10^66

= 9.434 X 10^66

3 0
4 years ago
A 100-point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response
Alex17521 [72]

Answer: 3x+8y=100

x+y=20

x=12

y=8

Step-by-step explanation: x would represent the number of multiple choice questions and y would represent the number of short response questions. the multiple choice questions were 3 points meaning that you need to find x. the short answer response questions were 8 points meaning you need to find y. altogether you need to get 100 points. for the second equation you have 20 questions that need to be both multiple choice and short response. therefore the second equation would be x+y=20. if you solved this, the answer would be that x equals 12 and y equals 8. hope this helped! :))

3 0
3 years ago
I u asnwer this u are gay
Alborosie

Answer:

well I mean I already am gay well I'm really lesbian so take that!

6 0
3 years ago
Read 2 more answers
Please someone help me!!!! SHOW ALL WORK! ive been stuck on this question for 2 days!! :((((((
Otrada [13]

Step-by-step explanation:

x² + y² − 8x + 10y − 8 = 0

Rearrange:

x² − 8x + y² + 10y = 8

To complete the square, take half of the x and y coefficients, square it, then add the result to both sides.

(-8/2)² = 16

(10/2)² = 25

x² − 8x + 16 + y² + 10y + 25 = 8 + 16 + 25

x² − 8x + 16 + y² + 10y + 25 = 49

Factor the squares:

(x − 4)² + (y + 5)² = 49

The center is (4, -5) and the radius is 7.

6 0
3 years ago
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