2 years ago

Elimination method 3x + -3 =63x + 2y = 16

Mathematics

1 answer:

zheka24 [161]2 years ago

3 0

Answer:

(4,2)

Step-by-step explanation:

hope this answerss

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C. Line m is a perpendicular<br> bisector. If EG=12 and FG=5,<br> of then how long is:

strojnjashka [21]

Answer:

$EF = 13$

$GH = 5$

$EH = 13$

Step-by-step explanation:

Given

The attached figure

$EG = 12$

$FG = 5$

Solving (a): EF

Since m is a perpendicular bisector, then <EGF and <EGH are right-angled.

So, EF will be calculated using Pythagoras theorem which states:

$EF^2 = EG^2 + FG^2$

$EF^2 = 12^2 + 5^2$

$EF^2 = 144 + 25$

$EF^2 = 169$

Take the positive square roots of both sides

$EF = \sqrt{169$

$EF = 13$

Solving (b): GH

Since m is a perpendicular bisector, then GH = FG

$FG = 5$

$GH = FG$

$GH = 5$

Solving (c): EH

Since m is a perpendicular bisector, then EH = EF

$EF = 13$

$EH = EF$

$EH = 13$

4 0

2 years ago

Lea buys 6 model cars that each cost $15.She also buys 4 bottles of paint that each cost $11.How many does lea spend on model ca

inn [45]

6x15=90

4x11=44

90+44=134

134$

5 0

3 years ago

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The manager of a music store ordered 20 new violins. She ordered some of two different models: the standard and the deluxe. Each

Iteru [2.4K]

The Manager ordered 5 Deluxe Violins and 15 Standard Violins.

15 • 500 = 7,500
7,500 + 4,000 = 11,500
5 • 800 = 4,000

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2 years ago

Read 2 more answers

Note: Enter your answer and show all the steps that you use to solve this problem.

ivolga24 [154]

Answer:

1) x = 6

2) 129

Step-by-step explanation:

For equation 1:

$7x=42\\\\\frac{7x=42}{7}\\\\ \boxed{x=6}$

Expression 2:

Apply PEMDAS Rule.

$8^2+9((12/3)*2)-7\\\\8^2+9(4*2)-7\\\\8^2+9(8)-7\\\\64+9(8)-7\\\\64+72-7\\\\136-7\\\\\boxed{129}$

Hope this helps.

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2 years ago

Please help me I don't understand this 15 points

r-ruslan [8.4K]

Check the attachment.

3 0

2 years ago

Elimination method 3x + -3 =63x + 2y = 16​

Elimination method 3x + -3 =63x + 2y = 16