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sesenic [268]
4 years ago
10

What is the product of any integer and –1?

Mathematics
1 answer:
morpeh [17]4 years ago
7 0
Since negative 1 is negative, we multiply by 1 and make it negative. Therefore, if the integer is x, the product of that and negative 1 is -1*x=-x
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PLEASE HELP ME ASAP!
TEA [102]

Answer:

x=5, y=2

Step-by-step explanation:

You simply write down what you see:

3x - 4y + 4x - 5y = 17

2x - 3y + 3x - 5y = 9

Then you simplify by grouping the x and the y terms:

7x - 9y = 17

5x - 8y = 9

Now you want to get equal amounts of x or y. Let's go for x. If we multiply the top eq with 5 and the bottom one with -7, we get:

35x - 45y = 85

-35x  + 56y = -63

-------------------------+ now we can add them:

11y = 22 divide by -11

y = 2

So 7x - 18 = 17, x =5

Finally, it makes sense to double check by filling in these answers in the original equations, just to see if no mistakes were made:

3*5 - 4*2 = 7

4*5 - 5*2 = 10

7+10 = 17: ok!

2*5 - 3*2 = 4

3*5 - 5*2 = 5

4+5 = 9: ok!

4 0
3 years ago
A school has 840 pupils, if the school hall has seats 85% of the pupils, how many pupils will have no seats?​
ioda

Answer:

126

Step-by-step explanation:

So theres 840 people and 85% got a seat

We just do 840 * 85% = 714

then to find the people without the seat

840 - 714 = 126

3 0
3 years ago
the following table shows the number of fire hydrants in each neighborhood overseen by Fire District 9
Anestetic [448]

Answer:

10

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I need help plz and plz explain why plz
Mariana [72]

Answer:

156 minutes

Step-by-step explanation:

2 hrs=120 minutes

3/5 hr=3/5 *60=36 minutes

120+36=156 minutes

hope this helps

brainliest?

6 0
3 years ago
Read 2 more answers
Simplify (2x2 - 5) - (3x2 + 4).
statuscvo [17]

Answer:

-x² - 9 is your simplified form

Step-by-step explanation:

Combine terms with the same amount of variables.

(2x² - 5) - (3x² + 4)

First, distribute the negative sign to all terms within the second parenthesis

(2x² - 5) - 3x² - 4

Combine like terms

2x² - 3x² = -x²

-5 - 4 = -9

-x² - 9 is your simplified form

~

6 0
3 years ago
Read 2 more answers
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