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2 years ago

Solve each system by elimination 9x - 6y = -21 and -9x + 9y = 18

Mathematics

2 answers:

IrinaK [193]2 years ago

7 0

Answer:

X= -3, Y= -1

Step-by-step explanation:

loris [4]2 years ago

6 0

<h2>Answer</h2>

= {x, y}

= {-1.-3}

X = -1

Y = -3

<h2>Explain</h2>

Look at the picture :)

#LearnWithBrainly

<h3>gak bisa bahasa inggris</h3>

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SHOW all the work please thank you so much

lana [24]

What do you need help with? it helps us to know the question!

7 0

2 years ago

A homemade lip balm consists of coconut oil and beeswax. Coconut oil costs $0.50 per ounce and beeswax costs $2.00 per ounce. If

KonstantinChe [14]

6×0.5=3 a=3
5*2=10 b=10

4 0

3 years ago

Read 2 more answers

What is the area of the figure if x = 25 cm and y=20 cm?<br> Use 3.14 to approximate it.

Akimi4 [234]

The area of the circle is 6,358.5cm²

<h3>Area of the circle</h3>

The formula for calculating the area of a circle is expressed as;

A = πr²

r is the radius = x + y

r = 25 + 20 = 45cm

Substitute the given parameters into the formula to have:

A = 3.14(45)²

A = 6,358.5cm²

Hence the area of the circle is 6,358.5cm²

Learn more on area of a circle here; brainly.com/question/10645610

4 0

2 years ago

Claire is 2 year younger than her sister. The

natta225 [31]

Given:

Claire is 2 year younger than her sister.

The sum of ages is no less than 44 years.

To find:

Inequality and find the youngest age Claire can be.

Solution:

Let the age of Claire be x.

Her sister's age = x+2

Sum of their ages is no less than 44 years. It means the sum ages is greater than or equal to 44.

$x+(x+2)\geq 44$

$2x+2\geq 44$

$2x\geq 44-2$

$2x\geq 42$

Divide both sides by 2.

$x\geq 21$

It means, Claire age can be greater than or equal to 21. So, the youngest age Claire can be 21 years old.

Therefore, the required inequality is $2x+2\geq 44$ and the correct option is B.

4 0

3 years ago

Help please, tank u :)

elena-s [515]

Answer:

16 ft

Step-by-step explanation:

Let the width of the rectangle be x ft

Therefore, length = (x + 2) ft

Area of the rectangle = 15 square ft

$x(x + 2) = 15 \\ \\ {x}^{2} + 2x = 15 \\ \\ {x}^{2} + 2x - 15 = 0 \\ \\ {x}^{2} + 5x - 3x - 15 = 0 \\ \\ x(x + 5) - 3(x + 5) = 0 \\ \\ (x + 5)(x - 3) = 0 \\ \\ x + 5 = 0 \: or \: \: x - 3 = 0 \\ \\ x = - 5 \: \: or \: \: x = 3 \\ \\ \because \: x \: can \: not \: be \: - ve \\ \\ \therefore \: x = 3 \\ \\ \implies \: x + 2 = 3 + 2 = 5 \\ \\ perimeter \: of \: rectngle \\ = 2(5 + 3) \\ = 2 \times 5 \\ = 16 \: ft$

5 0

2 years ago