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3 years ago

Sovle the system of linear equations by graphing y=2x-1 y=x+1

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

5 0

Answer:

2x-1=x+1

2x-x=x

1+1=2

x=2

Knowing x's value, we substitute it with the equations

y=x+1

y=2+1

or y=2x-1

y=2(2)-1

y=4-1

y=3

(2,3) are your coordinates :D

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The table below shows some values that satisfy a linear function.

Makovka662 [10]

Answer:

1.5

Step-by-step explanation:

Given the pair of points on the table.

Now the formula for slope, $m=\dfrac{y_2-y_1}{x_2-x_1}$

To calculate the slope we only require two pair of points.

Let us take: $(x_1, y_1)=(-5,0)$ and (x_2, y_2)=(-3,3)$

$m=\dfrac{3-0}{-3-(-5)}\\=\dfrac{3}{-3+5}\\=\dfrac{3}{2}\\m=1.5$

The slope of the linear function represented by the values in the table is 1.5.

Note: You can use any two set of values. The result will be the same.

3 0

4 years ago

Sarah has a savings account with $6,000 in it that earns 5.6% simple interest per year.

Anvisha [2.4K]

Answer:

$7,008

Step-by-step explanation:

A = P(1 + rt)

P = $6000

r = 0.056 (percent in decimal form)

t = 3 years

A = 6000(1 + (0.056)(3))

A = 6000(1 + 0.168)

A = 6000(1.168)

A = $7,008

8 0

3 years ago

Log10(x^2+1)=1 <br> .......

sesenic [268]

$2^{x} = 4 ----\ \textgreater \ x = log_{2}4

 x^{2} = 4 ----\ \textgreater \ x = \sqrt{4}$

5 0

3 years ago

Credit card buying has become an important part of the economy of the United States.

antiseptic1488 [7]

Answer:

True

Explanation:

Credit cards have played an major part in the economy. Without them, many people would reside to having cash on them constantly. It's very convenient, especially in this busy country.

7 0

3 years ago

Read 2 more answers

What is 144 in exponential form? A) 212 B) 27 C) 43 D) 122

Alexandra [31]

Answer:

12²

Step-by-step explanation:

Given in the question, an integer = 144

To find the exponential form 144 we will do factorisation

The prime factorisation of 144 is

2 × 2 × 2 × 2 × 3 × 3

So the exponential form is 2 $^{4}$ × 3²

The other way is

√144 = 12

which means

12² = 144

4 0

3 years ago

Read 2 more answers