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2 years ago

What is the solution to this system of equations?

Mathematics

1 answer:

Rashid [163]2 years ago

4 0

X=45
y=-8
check if this work

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What is the midpoint of a segment whose endpoints are (-5,6) and (-7,2)?

zloy xaker [14]

The answer to the question is b

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2 years ago

2) Evaluate the given numerical expression. A) 9 B) 12 C) 14 D) 21

eduard

Answer:

$\boxed{\sf{14}}$

Step-by-step explanation:

$\boxed{\underline{\text{ORDER OF OPERATIONS:}}}$

Use the order of operations.

Note: PEMDAS or BODMAS stands for:

PEMDAS

Parentheses
Exponents
Multiply
Divide
Add
Subtract

BODMAS

Brackets
Order
Divide
Add
Subtract

First, do parentheses.

3+6*(5+4)÷3-7

(5+4)=9

$\Longrightarrow: \sf{3+6* 9\div 3-7}$

Do multiply and divide.

6*9=54

54/3=18

Then, rewrite the problem down.

$\Longrightarrow: \sf{3+18-7}$

Add.

$\sf{3+18=21}$

$\sf{21-7=\boxed{\sf{14}}$

$\Longrightarrow: \boxed{\sf{14}}$

Therefore, the correct answer is "C. 14".

I hope this helps, let me know if you have any questions.

8 0

2 years ago

The length of a rectangular deck is 4 times it’s width. If the deck’s perimeter is 30ft, what is the deck’s area?

ioda

Try this solution (note, this is not the shortest way):

1. if the given length is 'l' and the width is 'w', then according to the condition 4*l=w;

2. according to the condition the perimeter is 30 ft. Formula of the perimeter is P=2(l+w), then 2(l+w)=30;

3. if to substitute '4*l' instead of 'w', the formula of the perimeter (from item no. 2) will be as 2(4*l+l)=30 or 10*l=30 ⇒ l=3 ft. The length is 3 ft.!

4. if l=3 ft., then w=4*3=12 ft. The width is 12 ft.!

5. Area is

A=w*l; A=12*3=36 ft²

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2 years ago

5 scholars ran a marthon each one ran 1\5 of a mile how far did the students run in all

IrinaK [193]

9514 1404 393

Answer:

1 mile

Step-by-step explanation:

5 × (1/5 mi) = 5/5 mi = 1 mi

The students ran 1 mile in all.

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What are the amplitude. Phase shift and midline if f(x) = 2 sin(x+pi)-4

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Find the missing angles using either the triangle sum theorem (a2+b2=c2) or inverse trigonometric ratios

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2 years ago