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posledela
3 years ago
8

8x+9y=60 2x-9y=-30 elimation method

Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

x=3 y=4

Step-by-step explanation:

8x+9y=60 + 2x-9y=-30

10x=30

x=3

y=4

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Consider functions f and g<br><br> vvvv
Jlenok [28]

Answer:

C. 77x⁷ + 78x⁶ - 27x⁵

Step-by-step explanation:

Operation of functions

f(x) g(x)

f(x) • g(x) = (11x³ - 3x²)(7x⁴ + 9x³)

Simplify or expand

(11x³ - 3x²)(7x⁴ + 9x³)

Expand the expression

11x³ × 7x⁴ + 11x³ × 9x³ - 3x² × 7x⁴ - 3x² × 9x³

Multiply

77x⁷ + 99x⁶ - 21x⁶ - 27x⁵

Combine like terms

77x⁷ + 78x⁶ - 27x⁵

Hope this helps and have a nice day

3 0
2 years ago
Jenny has $2525 and she earns $1010 for each lawn that she mows. Jenny wants to buy a concert ticket that costs $6565. Enter the
Inessa [10]

Answer:

<u><em>6565 = 1010(4) + 2525</em></u>

Step-by-step explanation:

so the equation would be

6565 = 1010x + 2525

x = 4 because

1010 (4) = 4040

and 4040 + 2525 = 6565, so

<u>6565 = 1010(4) + 2525</u>

7 0
2 years ago
What is the answer to 18-4K=-10-4k?
Natalka [10]

Answer:

  no solution

Step-by-step explanation:

add 4k to both sides of the equation and you have ...

  18 = -10  . . . .  false

There is no value of k that will make this statement true. There is no solution.

6 0
3 years ago
If x is 4 then y is
Eduardwww [97]

Answer:

2

Step-by-step explanation:

if x is 4 then y is 2 unlesss uknwo

6 0
3 years ago
Here is the last answers...
Zarrin [17]

Step-by-step explanation:

You are finding the whole

0.7 × 20 = 14

or

70% of 20 = 7/10 x 20 = 7/10 x 20/1 = 140/10

140/10

140/10 = 14/1

The minimum number of questions he need to do are 14

I'm not sure if you are finding the part or the whole

let me know if im wrong

5 0
3 years ago
Read 2 more answers
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