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Lena [83]
3 years ago
6

The value of a + b + c for equation 2 Y - x = 7 is ​

Mathematics
1 answer:
morpeh [17]3 years ago
6 0

Answer:

Correct option is

B

1.x+0.y=7

x=7 can be written as, 1.x+0.y=7 as the coefficient of x is 1 and that of y is 0. Step-by-step explanation:

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3 folders cost $2.91.<br> Which equation would help determine the cost of 2 folders?
-Dominant- [34]

Answer:

194

Step-by-step explanation:

2/3X=291

x=194

8 0
3 years ago
Suppose Tommy walks from his home at (0, 0) to the mall at (0, 7), and then walks to a movie theater at (9, 7). After leaving th
Bingel [31]

Answer:

32 blocks

Step-by-step explanation:

distance between home (0,0) and mall (0,7) = 7

distance between mall (0,7) and movies (9,7) = 9

distance between movies (9,7) and store (9,0) = 7

distance between store (9,0) and home (0,0) = 9

7 + 9 + 7 + 9 = 32 blocks

6 0
3 years ago
A scientist discovers a new way to produce vitamin C. In 15 hours, 678 kilograms are produced. In 25 hours, 1018 kilograms are p
satela [25.4K]

Answer:

The equation of the line is y = 34\cdot x + 168.

Step-by-step explanation:

According to Analytical Geometry, we know that any equation of the line can be determined by knowing two distinct points on Cartesian plane. From statement we get that:

y(15\,h) = 678\,kg (1)

y (25\,h) = 1018\,kg (2)

By applying the definition of the equation of the line, we form this system of two linear equations with two variables:

15\cdot m + b = 678 (3)

25\cdot m + b = 1018 (4)

By algebraic mean we get the following solution:

m = 34\,\frac{kg}{h} and b = 168\,kg

And the equation of the line is y = 34\cdot x + 168.

7 0
3 years ago
The amount of bacteria, f(x), observed by a research scientist is represented by the function f(x) = 3x + 7, where x is the numb
nekit [7.7K]

Answer:

B

Step-by-step explanation:

just got the answer.

4 0
3 years ago
Read 2 more answers
Jun wei has 12 more 10 cents coins than 20 cents coins. the total value of all the coins is $5.40. find the total number of coin
DochEvi [55]

Jun Wei has a total of 40 coins. An algebraic expression or equation with the given information is formed to calculate the total number of coins.

<h3>What is an algebraic expression?</h3>

An algebraic expression is the combination of one or more variables, coefficients, and constants separated by operators. Each of them is called terms of the expression.

Eg: a + 6x + 5y + 2

Here there are 4 terms with 3 variables, 3 coefficients, and one constant.

<h3>Calculation:</h3>

Given that,

Jun Wei has 12 more 10 cents coins than 20 cents coins.

So,

Consider the number of 20-cent coins = x

Then, the number of 10 cent coins = x + 12

It is given that the total value of all the coins is $5.40.

Where 1 $ = 100 cents. That implies, $5.40 = 540 cents

So,

the total value of the coins = 540 cents

⇒ 20(x) + 10(x + 12) = 540

⇒ 30x = 540 - 120

⇒ 30x = 420

∴ x = 40

Hence, there are 40 coins with Jun Wei.

Learn more about algebraic expression here:

brainly.com/question/4541471

#SPJ4

4 0
2 years ago
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