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zalisa [80]
2 years ago
5

The quotient of a number and - 2/3 is -9/10

Mathematics
1 answer:
Julli [10]2 years ago
5 0

Answer:

n = 3/5

Step-by-step explanation:

Represent this quotient as:

 

   n

---------

-2/3

and set it equal to -9/10:

   n           -9

--------- = -------

-2/3          10

Cross multiplication yields:

10n = 6, so that n = 6/10 or n = 3/5

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Lauren bought 5 pizzas for $17 each. She paid with a $100 bill.
Lelechka [254]
The first blank is 17
2nd blank is 85
3rd blank is 15

wat happened is
C=paid-costofpizzas
paid=100
costofpizzas=number of pizzas times cost per pizza
costofpizzas=5 times 17

so
C=100-5 times 17
C=100-85
C=15
change=$15
6 0
3 years ago
Read 2 more answers
1. How many real solutions does the quadratic equation x?+9x= -8 have?​
likoan [24]

Answer:

This quadratic equation has 2 solutions.

Step-by-step explanation:

I assume the '?' in your question is meant to be power 2 (²), or else it would not be a quadratic equation. You could write it using the superscript version of 2.

We can solve this equation by expressing it in the form: ax² + bx + c

x² + 9x= -8

x² + 9x + 8 = 0

Now if you know the discriminant, you can simply plug in your values of a, b, and c to see how many solutions there are.

In this case, you would not need the discriminant as there are whole-number factors and hence this can simply be factorised.

x² + 9x + 8 = 0

(x + 8)(x + 1) = 0

For this equation to be true (= 0), x can equal -8 OR -1.

Hence, this quadratic equation has 2 solutions.

5 0
2 years ago
Please help me find the equation xx
Lisa [10]

9514 1404 393

Answer:

  • (2x-10) +x +(x+10) = 180
  • x = 45
  • (2x-10)° = 80°
  • (x+10)° = 55°
  • x° = 45°

Step-by-step explanation:

The equation is an expression of the fact that <em>the sum of the angles in a triangle is 180°.</em>

  (2x -10)° +x° +(x +10)° = 180°

For the purposes of the answer box, I'd leave off the degree symbol:

  (2x -10) +x +(x +10) = 180

__

This simplifies to ...

  4x = 180

  x = 45

Then the angles (CW from top) are ...

  (2·45 -10) = 80°

  (45 +10)° = 55°

  (45)° = 45°

8 0
3 years ago
helphelphelphelphelphelphelphelphelphelphelphelpmememememememememememememememememememememememepleasepleaseplaesepleasepleaseplea
likoan [24]

The factored form of the expression 10x² -x - 2 is (5x+2)(2x-1)

<h3>Factorizing quadratic equations</h3>

Factorization is a way of simplify. Given the equation 10x² -x - 2

Factorize the given expression

10x² -x - 2

Separate the middle term into -5x and 4x to have;

10x² - 5x + 4x - 2

Factor out the GCF

5x(2x-1)+2(2x-1)

Hence the factored form will be;

(5x+2)(2x-1)

The factored form of the expression 10x² -x - 2 is (5x+2)(2x-1)

Learn more on factoring here: brainly.com/question/24734894

#SPJ1

7 0
2 years ago
Please help me please I’m stuck please
attashe74 [19]

<em>answer \\ 9 \\ please \: see \: the \: attached \: picture \: for \: full \: solution \\ hope \: it \: helps</em>

7 0
2 years ago
Read 2 more answers
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