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3 years ago

Solve for y : 6x+y=9 *

Mathematics

1 answer:

bazaltina [42]3 years ago

6 0

Answer:

y = 9 - 6x

Step-by-step explanation:

this is correct im 100% sure lol

good luck

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A market sells 7 oranges for $2.45. How much will 8 oranges cost?

nordsb [41]

Answer:

$2.80

Step-by-step explanation:

Divide 2.45 by 7 to get the cost of 1 orange which is $0.35. Multiply that cost by 8 to get the cost of 8 oranges and your final answer which is $2.80.

3 0

3 years ago

Given the Arithmetic series A1+A2+A3+A4

natali 33 [55]

Answer:

$S _{19} = 760$

Step-by-step explanation:

$a1 = 13 \\ a2 = 16 \\ d = a2 - a1 = 16 - 13 = 3 \\ d = 3 \\ a _{n} = l = 67 \\$

now,

$a _{n} = a + (n - 1) \times d \\ 67 = 13 + (n - 1) \times 3 \\ 67 = 13 + 3n - 3 \\ 67 - 13 + 3 = 3n \\ 57 = 3n \\ 3n = 57 \\ \\ n = \frac{57}{3} \\ \\ n = 19$

now the sum of the numbers

$S _{n} = \frac{n}{2} (a + l) \\ \\ S _{19} = \frac{19}{2} (13 + 67) \\ \\ S _{19} = \frac{19}{2} (80) \\ \\ S _{19} = \frac{19}{2} \times 80 \\ \\ S _{19} = 19 \times 40 \\ S _{19} = 760$

8 0

3 years ago

A horse trainer uses circular pens that are 35ft, 50ft and 66 ft in diameter find the area of each pen

Anika [276]

Use the formula to find the area of a circle: Area = pi times radius squared

Divide each diameter by 2 to get the radius

Ex) 50/2=25
A= pi times 25 squared
25^2=625
A= 625 times pi
A=2,587.5

8 0

3 years ago

Two rectangles have the same width. The length of one is 2 feet longer than the width. The length of the other is 4 feet longer

qaws [65]

Area of smaller=4*5=20 sq ft
Area of larger=4*6=24 sq ft
Larger is 4 more than smaller

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4 years ago

11. If x² =9, then x = - 3.

Alika [10]

Answer:

11. Yes, but it can also be 3

12. No, if today is Wednesday, yesterday was TUESDAY.

7 0

2 years ago

Solve for y : 6x+y=9 *​

Solve for y : 6x+y=9 *