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Ne4ueva [31]
3 years ago
7

-2x-3y=-16; 5x+9y=40

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
7 0

Answer:

x=8 y=o

Step-by-step explanation:

If first expression multiples 3 so: -6x-9y=-48 to emerge with second expression

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I NEED HELP ASAP PLEASE!!!
Alex17521 [72]

Answer:

Q2: -17

Q3: a) -5/2  b) g = -13

Step-by-step explanation:

2w+7 = -9

2w = -9 - 7

w = -16/2

w = -8

---

15 - 4w

= 15 - 4(-8)

= 15 - 32

= -17

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

Q3:

a) 3/4(16m-24) = -48

16m -24 = -48 ÷ 3/4

16m = -64 + 24

16m = -40

m = -5/2

b) -20 = 1/6(36+12g)

-20 = 1/6 × 6(6+2g)

(cross out the 6 from 1/6 and 6)

-20 = 6 + 2g

-20-2g= 6

-2g = 6+20

-2g = 26

g = 26/-2

g = -13

3 0
3 years ago
What single decimal multiplier would you use to decrease by 19% followed by a 17% decrease?
krok68 [10]

Answer:

0.81 & 0.83

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
7(3b-1)=2b-26 please help and give me step by step ☺️​
Colt1911 [192]

Answer:

b = -1

Step-by-step explanation:

7(3b-1): 7 goes into the numbers by multiplying. This will give you 21b-7.

So now the equation should be like 21b-7=2b-26.

-7 and 2b swap places, making 21b-2b=7-26. It will give you 19b= -19.

Finally divide the two numbers (-19 / 19) and the solution will be b= -1.

If I didn't make a clear answer or a good explanation, please comment. I sometimes mess up my steps, and this is my first time using this.

5 0
3 years ago
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Identify the slope and y-intercept of the line.<br> y = 6x-5
Alexeev081 [22]

Answer:

slope = 6

y-intercept = -5

Step-by-step explanation:

The equation is in slope-intercept form:

y = mx + b

where m is the slope and b is the y-intercept

Let's find the slope:

The slope is the number being multiplied by x.

y = mx + b

y = 6x - 5

Therefore, the slope is 6.

Let's find the y-intercept:

The y-intercept is the last number in the equation.

y = mx + b

y = 6x -5

Therefore, the y-intercept is -5.

3 0
3 years ago
Max can mow a lawn in 45 minutes. Jan takes twice as long to mow the same lawn. If they work together, the situation can be mode
Rudiy27

Answer:30 minutes

Step-by-step explanation:

5 0
3 years ago
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