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Varvara68 [4.7K]
4 years ago
12

Select the best answer for the question 7 1/5-62/5=

Mathematics
1 answer:
Aleksandr [31]4 years ago
7 0
-26/5 or -5 1/5 is the answer
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Please answer asap ------------------ ------------------ ------------------ ------------------
Pavlova-9 [17]

Answer:

Answer :

It's 3v - 9/2

Step-by-step explanation:

....

7 0
3 years ago
Select the correct answer. What is the value of a in the function’s equation?
Arturiano [62]

Answer:

a = -2

Step-by-step explanation:

Given

The attached function (graph)

Required

Find a

The given function is quadratic and will be solved using:

y = ax^2 + bx + c

From the attachment:

(x,y) = (-3,4)

(x,y) = (-2,2)

(x,y) = (-4,2)

Substitute these values in y = ax^2 + bx + c

For: (x,y) = (-3,4)

4 = a(-3)^2 + b(-3) + c

4 = 9a -3b + c

For: (x,y) = (-2,2)

2 = a(-2)^2 + b(-2) + c

2 = 4a -2b + c

For: (x,y) = (-4,2)

2 = a(-4)^2 + b(-4) + c

2 = 16a -4b + c

So, we have:

4 = 9a -3b + c --- (1)

2 = 4a -2b + c ---- (2)

2 = 16a -4b + c --- (3)

Make c the subject in (1)

c = 4 - 9a + 3b

Substitute c = 4 - 9a + 3b in (2) and (3)

2 = 4a -2b + c

2 = 4a -2b + 4 - 9a + 3b

Collect Like Terms

-4 + 2 = 4a - 9a-2b  + 3b

-2 = - 5a+b --- (4)

2 = 16a -4b + c

2 = 16a - 4b + 4 - 9a + 3b

Collect Like Terms

2 -4 = 16a  - 9a + 3b- 4b

-2 = 7a -b --- (5)

Add 4 and 5

-2 = - 5a+b

-2 = 7a -b

--------------------------

-2 - 2 = -5a + 7a +b - b

-4 = 2a

Divide through by 2

-2 = a

a = -2

6 0
3 years ago
The perimeter of a rectangular garden is 37.5 feet (ft). The width is x and the length is 15 ft. What is the width, in feet, of
nikitadnepr [17]

Answer:

the width is 22.5 ft

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the value of x in the equation x + 5.1 = 0
lianna [129]

Answer:

-5.1

Step-by-step explanation:

Subtract 5.1 from both sides.

4 0
3 years ago
Read 2 more answers
Reece and Sarah share some money in the ratio 9 : 16.
Anit [1.1K]

Answer:

64% > 60%

Step-by-step explanation:

Total Units = 9 + 16 = 25 units.

Sarah Receives 16 units out of 25.

Percentage = 16/25 * 100

= 64%

Therefore Sarah received more than 60% of this money and therefore Reece is correct.

5 0
2 years ago
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