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2 years ago

12

Since multiplication is implied algebra we often don’t need to actually write the

1 answer:

KengaRu [80]2 years ago

8 0

Ab = 4c
Just drop the ‘x’

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Solve 2x+3y=2<br> 5x-y=-29<br> By elimination

Andreyy89

Answer:

$\huge\boxed{x=-5,\ y=4\to(-5,\ 4)}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}2x+3y=2\\5x-y=-29&\text{multiply both sides by 3}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+3y=2\\15x-3y=-87\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad17x=-85\qquad\text{divide both sides by 17}\\.\qquad\dfrac{17x}{17}=\dfrac{-85}{17}\\.\qquad\boxed{x=-5}\\\\\text{Substitute it to the second equation:}\\\\5(-5)-y=-29\\\\-25-y=-29\qquad\text{add 25 to both sides}\\\\-25+25-y=-29+25\\\\-y=-4\qquad\text{change the signs}\\\\\boxed{y=4}$

5 0

3 years ago

I need help please???

zimovet [89]

Answer:

(-7 and 3) (-5 and 1) (-3 and -1)

Step-by-step explanation:

If you add all of them you get -4.

4 0

2 years ago

Read 2 more answers

Cube root of b to the 12 power

kvv77 [185]

$\sqrt[3]{b^{12}}=\sqrt[3]{(b^4)^3}=b^4$

6 0

2 years ago

a class consists of 10 boys and 5 girls. how many ways can a committee of 3 boys and 2 girls be selected

hammer [34]

Answer:

<em>i dont know the answer dude or ladies</em>

Step-by-step explanation:

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8 0

3 years ago

A machine is designed to fill 16-ounce bottes of shampoo. When the machine is working properly, the amount poured into the bottl

vlada-n [284]

Answer:

(D) 15.90 to 16.20 ounces

Step-by-step explanation:

Confidence Interval = mean + or - (t×sd)/√n

Mean = 16.05 ounces, sd = 0.1 ounce, n = 4, degree of freedom = n - 1 = 4 - 1 = 3, t = 3.182

Lower limit = 16.05 - (3.182×0.1)/√4 = 16.05 - 0.15 = 15.90 ounces

Upper limit = 16.05 + (3.182×0.1)/√4 = 16.05 + 0.15 = 16.20 ounces

The sample mean will fall from 15.90 to 16.20 ounces

7 0

2 years ago