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stich3 [128]
3 years ago
8

Use a graphing tool to solve the system.

Mathematics
1 answer:
charle [14.2K]3 years ago
6 0
2.85x - 4 = 5.3x + 1.6
-4 - 1.6 = 5.3x - 2.85x 
-5.6 = 2.45x
-2.29 = x
2.53 = y
x: ( -2.29 , 0 ) y: ( 0 , 2.53)
(-2.29, 2.53) is the coordinate that they will meet at
hopes this help<span />
You might be interested in
Can you help me simplify this expression 16d + 20c + 5d -7 - 8c - 7d + 3?
dimulka [17.4K]

Answer:

12c + 14d - 4

Step-by-step explanation:

16d + 20c + 5d -7 - 8c - 7d + 3

Simplify the expression

__________________________

To solve, we need to first take in mind the fact that there are different like terms within this expression. Like terms are numbers or values that end in different symbols, such as variables or exponents. Since we are filled with variables such as c and d. We can do as followed :

Combine the "d" like terms :

16d + 5d - 7d

21d - 7d

14d

Combine the "c" like terms :

20c - 8c

12c

Combine the constants :

-7 + 3

-4

Now add all of the values together to get the final expression.

12c + 14d - 4

6 0
3 years ago
Read 2 more answers
Use Gauss's approach to find the following sums (do not use formulas) a 1+2+3+4 998 b. 1+3+5 7+ 1001 a The sum of the sequence i
valkas [14]

Answer:

(a) 498501

(b) 251001

Step-by-step explanation:

According Gauss's approach, the sum of a series is

sum=\frac{n(a_1+a_n)}{2}         .... (1)

where, n is number of terms.

(a)

The given series is

1+2+3+4+...+998

here,

a_1=1

a_n=998

n=998

Substitute a_1=1, a_n=998 and n=998 in equation (1).

sum=\frac{998(1+998)}{2}

sum=499(999)

sum=498501

Therefore the sum of series is 498501.

(b)

The given series is

1+3+5+7+...+ 1001

The given series is the sum of dd natural numbers.

In 1001 natural numbers 500 are even numbers and 501 are odd number because alternative numbers are even.

a_1=1

a_n=1001

n=501

Substitute a_1=1, a_n=1001 and n=501 in equation (1).

sum=\frac{501(1+1001)}{2}

sum=\frac{501(1002)}{2}

sum=501(501)

sum=251001

Therefore the sum of series is 251001.

8 0
3 years ago
Subtract -3x-4 from 7x^2-7x​
professor190 [17]

Answer:

−49x8−3x−4

Step-by-step explanation:

−3x−4−49x7x

=−3x+−4+−49x8

hope this helps

4 0
4 years ago
Pls help me with question 1
ZanzabumX [31]

Answer:

well first put your name

8 0
3 years ago
Read 2 more answers
Factor the trinomial:<br> -3y^2 + 7y + 20
Sever21 [200]

Answer:

here you goes hope it helps you

Step-by-step explanation:

1

Common factor

−

3

2

+

7

+

2

0

-3y^{2}+7y+20

−3y2+7y+20

−

1

(

3

2

−

7

−

2

0

)

-1(3y^{2}-7y-20)

−1(3y2−7y−20)

2

Use the sum-product pattern

−

1

(

3

2

−

7

−

2

0

)

-1(3y^{2}{\color{#c92786}{-7y}}-20)

−1(3y2−7y−20)

−

1

(

3

2

+

5

−

1

2

−

2

0

)

-1(3y^{2}+{\color{#c92786}{5y}}{\color{#c92786}{-12y}}-20)

−1(3y2+5y−12y−20)

3

Common factor from the two pairs

−

1

(

3

2

+

5

−

1

2

−

2

0

)

-1(3y^{2}+5y-12y-20)

−1(3y2+5y−12y−20)

−

1

(

(

3

+

5

)

−

4

(

3

+

5

)

)

-1(y(3y+5)-4(3y+5))

−1(y(3y+5)−4(3y+5))

4

Rewrite in factored form

Solution

−

1

(

−

4

)

(

3

+

5

)

6 0
3 years ago
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