1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ELEN [110]
3 years ago
14

Help with mathematics

Mathematics
1 answer:
Roman55 [17]3 years ago
3 0
The answer is c I think
You might be interested in
PLLLS helpppp mee this is due now T-T
Amanda [17]

Answer:

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Got time more on the way
kramer
Both a and b are correct
7 0
3 years ago
X + y = 2
liraira [26]

Answer:

D. (3,-1)

Step-by-step explanation:

x + y = 2  \:  \:  \:  \:  \:  \: ..(1) \\ 2x - y = 7 \:  \:  \:  \: ..(2)

from equation 1 we get,

x = 2 - y

now,

put \:  \:  \:  \: x = 2 - y \:  \:  \: in \: (2)

we get,

2(2 - y) - y = 7 \\ 4 - 2y - y = 7 \\ 4 - 3y = 7 \\  - 3y = 7 - 4 \\  - 3y = 3  \\  \\ y =  \frac{3}{( - 3)}  \\  \\ y =  - 1

now,

put \:  \:  \:  \: y =  - 1 \:  \:  \:  \: in \: (1)

we get,

x + ( - 1) = 2 \\ x - 1 = 2 \\ x = 2  + 1 \\ x = 3

hence, the value of x = 3 and y = (-1)

8 0
3 years ago
Give the property that justifies each step.
hjlf

Answer:

Please check the explanation below.

Step-by-step explanation:

Some of the properties are defined as:

  • <em>Distributive property</em>

a(b+c) = ab+ac

For example,

suppose a=1, b=2, c=3

1(2+3) = 1(2) + 1(3)

5 = 2+3 = 5

  • <em>Subtraction property of Equality</em>

if (a=b), then a-c = b-c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a-c = b-c ⇒ 1-3 = 1 - 3  ⇒ -2 = -2

  • <em>Addition property of Equality</em>

if (a=b), then a+c = b+c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a+c = b+c ⇒ 1+3 = 1+3  ⇒ 4 = 4

  • <em>Multiplicative property of Equality</em>

if (a=b), then a×c = b×c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a×c = b×c ⇒ 1×3 = 1 × 3  ⇒ 3 = 3

  • <em>Division property of Equality</em>

if (a=b), then a÷c = b÷c

For example,

suppose a=1, b=1, c=3

if a = b ⇒ 1 = 1

then a÷c = b÷c ⇒ 1÷3 = 1 ÷ 3  ⇒ 1/3 = 1/3

Let's solve the given equation using the above properties.

5(x+10) = 20        Given

5x+50 = 20          1) Distriburive property ∵ a(b+c) = ab+ac

5x = -30               2) Subtraction property of Equality ∵ if (a=b), then a-c = b-c

x = -6                    3) Division property of Equality  ∵ if (a=b), then a÷c = b÷c

         

5 0
3 years ago
Solve m+7=8<br> What dose m =
Bingel [31]
1 bru just making this up bend
7 0
3 years ago
Other questions:
  • A certain organization recommends the use of passwords with the following​ format: vowel commavowel, consonant comma consonant c
    5·1 answer
  • A team ratio of wins to losses is 3 to 4. How many losses do they have if they have 12 wins?
    11·1 answer
  • Hardy’s plant grows rapidly.It grows by 10 cm every 2 Years. How much taller will Hardy’s plant be in 5 Years.
    12·2 answers
  • Given matrices S and T below, which statement is true?
    9·2 answers
  • What is the area of a square if one side is 25 feet long?
    15·2 answers
  • ADDITION OF INTEGERS<br> 21) 2 +6+-6<br> A) 0<br> B) 8<br> C) 1 D) 2
    9·1 answer
  • Ok, so I have this math Question it goes like this. Tommy ran 2/3 mile in 1/10 of an hour. Zeke ran 1/4 mile in 1/8 of an hour.
    14·1 answer
  • A central angle of a circle intercepts an arc of length 18 centimeters. The radius of the circle is 9 centimeters. What is the m
    12·1 answer
  • 50 POINTS!!!There were 50 questions on Vince's math test. He answered 45 questions correctly. What percent of the questions did
    14·2 answers
  • 1/3 x + 4 = x − 2 solve for x
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!