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2 years ago

9) Select the best method to solve the system.

Mathematics

2 answers:

Novosadov [1.4K]2 years ago

7 0

Substitution because you need to substitute one of the variables

MArishka [77]2 years ago

6 0

Answer:

elimination

Step-by-step explanation:

multiply 2nd eqn by 2 and take eqn 1 - eqn 2 and you'll get rid of x term, leaving only the y term and a constant, where you can then easily solve for y and sub to get x

Topic: simultaneous eqn

If you like to venture further, do check out my insta (learntionary) where I constantly post math tips! Thanks!

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16.4.57 Question Help A box contains eighteen $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill You bl

Rudiy27

Answer:

$ 7.7

Step-by-step explanation:

Given,

There are 18 $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill,

Total number of bills = 18 + 10 + 8 + 3 + 1 = 40,

$\because \text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}$

Thus,

The probability of $ 1 = $\frac{18}{40}$

The probability of $ 5 = $\frac{10}{40}$

The probability of $ 10 = $\frac{8}{40}$

The probability of $ 20 = $\frac{3}{40}$

The probability of $ 100 = $\frac{1}{40}$

If a bill is selected randomly,

The expected value of the bill

$=\frac{18}{40}\times 1+\frac{10}{40}\times 5+\frac{8}{40}\times 10+\frac{3}{40}\times 20+\frac{1}{40}\times 100$

$=\frac{18+50+80+60+100}{40}$

$=\frac{308}{40}$

= $ 7.7

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2 years ago

Y=2x+3<br> solve for y<br> help me plz

ruslelena [56]

Answer:

this is already solved.

Step-by-step explanation:

the only thing left would be graphing it.

5 0

2 years ago

At Cooper High School, jazz band is only offered as a zero-hour (before school) class. Dan has a zero-hour class. Conjecture: Da

lilavasa [31]

I would say this is false because Dan may be in another zero hour class.

C.

7 0

3 years ago

Factor completely 6x2 − 11x − 10. (6x 2)(x − 5) (6x − 2)(x 5) (3x 2)(2x − 5) (3x − 2)(2x 5).

madreJ [45]

Factors of the given expression are $(2x-5) ,(3x+2)$

The given expression is:

$6x^2-11x-10$

<h3>What is a factor?</h3>

A factor is a number that divides another number leaving no remainder.

we can split the middle term as,

$6x^2-15x +4x-10\\$

$3x(2x-5)+2(2x-5)\\\\(2x-5) (3x+2)$

Therefore factors of the given expression are $(2x-5) ,(3x+2)$

To get more about factors visit:

brainly.com/question/9781037

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1 year ago

The model represents the equation 3x – 2 < 4. What is the solution for this inequality? x < 2 x < 6 x < -2 x < -3

Oksana_A [137]

Answer:

the answer is x<2

Step-by-step explanation:

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2 years ago

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