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3 years ago

Solve the system using substitution x=3y-11 4x-3y=-26

Mathematics

1 answer:

iragen [17]3 years ago

3 0

Answer:

x=3y-11

then now putting the value of x in second equation

4(3y-11)-3y =26

12y - 44-3y=26

9y=44+26

9y=70

y=70/9

now putting the value of y in 1st equation then

x=3*70/9-11

x=37/3

now checking this is correct or not in 2nd eqn

4*37/3-3*70/9=26

148-70/3=26

26=26

Step-by-step explanation:

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Write two different word phrases for the expression (52+8) 30

zepelin [54]

Answer:

1. The product of thirty and eight more than fifty-two.

2. Thirty times the sum of eight and fifty-two

Step-by-step explanation:

1) 52+8 (eight more the fifty-two )

52+8 (The product of thirty and eight more than fifty-two.)

2) 52+8 (The sum of eight and fifty-two)

52+8 (Thirty times the sum of eight and fifty-two)

3 0

3 years ago

Read 2 more answers

Which of these four sets of side lengths will form a right triangle? Set 1 4 cm, 5 cm, 6 cm Set 2 8 in., 12 in., 20 in. Set 3 10

Alenkasestr [34]

Answer: The correct option is (D) SET 4.

Step-by-step explanation: We are to select the correct set of side lengths that will form a right-angled triangle.

To form a right-angled triangle, we must have the following relation:

Perpendicular² + Base² = Hypotenuse².

Hypotenuse is the length of the largest side; perpendicular and base are the two legs of the triangle.

SET 1 : 14 cm, 5 cm, 6 cm.

We have

$5^2+6^2=25+36=61,\\\\14^2=196.$

Therefore,

Perpendicular² + Base² ≠ Hypotenuse².

So, this set will not form a right-angled triangle.

SET 2 : 8 in., 12 in., 20 in.

We have

$8^2+12^2=64+144=208,\\\\20^2=400.$

Therefore,

Perpendicular² + Base² ≠ Hypotenuse².

So, this set will not form a right-angled triangle.

SET 3 : 10 mm, 20 mm, 30 mm.

We have

$10^2+20^2=100+400=500,\\\\30^2=900.$

Therefore,

Perpendicular² + Base² ≠ Hypotenuse².

So, this set will not form a right-angled triangle.

SET 4 : 12 ft, 16 ft, 20 ft.

We have

$12^2+16^2=144+256=400,\\\\20^2=400.$

Therefore,

Perpendicular² + Base² = Hypotenuse².

So, this set will form a right-angled triangle.

Thus, the SET 4 will form a right-angles triangle.

Option (D) is correct.

5 0

3 years ago

Read 2 more answers

5,10,20... write an explicit and recursive equ

Lesechka [4]

Answer:

if you are wanting one based on the numbers 5, 10, 20, the next numbers would be 40, 80, 160 and so one, all you do is multiply the number by 2

Step-by-step explanation:

8 0

3 years ago

Hello, no rush, but I need to know the answer for 4(x-2+y)

bixtya [17]

Answer:

It's 4x - 8 + 4y

Step-by-step explanation:

4(x-2+y)

4 (x) = 4x

4 (2) = 8

4 (y) = 4y

4x - 8 + 4y

3 0

3 years ago

8% of 44 show work please and an answer ciz i domt understand

nalin [4]

Hey there!

These are the steps involved in answering the question:

Change 8% into a decimal. To do this, just move the decimal place, 2 places to the left.
You get 0.8

Now, multiply 0.8 by 44.
0.8 x 44 = 35.2

So, the final answer is: 35.2.

(If you feel that my answer has helped you, please consider rating it and giving it a thank you! Also, feel free to choose the best answer, the brainliest answer!)

Thank you for being part of the brainly community! :D

7 0

4 years ago