All categories

2 years ago

Help linear EQ I will mark you brainliest!

Mathematics

2 answers:

kompoz [17]2 years ago

7 0

Step-by-step explanation:

First, know that: y—y0 = m (x—x0)

y+3=2(x+1)

y = 2x —1

11)

m=∆y/∆x

m=(3—5)/(—1+2) = —2/1 = —2

y—3 = —2(x+1)

y=—2x+1

y+2=—2(x+5)

y=—2x—12

y—10=3(x)

y=3x+10

y—12=—1(x+6)

y=—x+6

m=∆y/∆x

m=(3—5)/(—1+2) = —2/1 = —2

y—3 = —2(x+1)

y=—2x+1

13)

m=(10+5)/(—6—2) = 15/—8

y+5=(15/—8)(x—2)

y=(15/—8)x — (5/4)

15)

m=(3—10)/(—3—4) = —7/—7 = 1

y—3=1(x+3)

y=x+6

abruzzese [7]2 years ago

5 0

Answer:

1. y=2x-3

3. y=-2x-2

7. y=-1x+12

13. y=10x-5

11. y=3x+5

5. y=3x+10

9. y=3x+5

15. y=3x+10

You might be interested in

12) Which graph represents the solution for the equation-x-1=-x+ 2?

antiseptic1488 [7]

Answer:

Find the graph that has (2,0)

Step-by-step explanation:

$\frac{1}{2}x -1=-x+2$

+ x +x

$\frac{3}{2}x - 1 = 2$

$2(\frac{3}{2}x - 1 = 2)$

3x - 2 = 4

+ 2 + 2

3x = 6

/3 /3

x = 2

Your image is blurry, but the point that has (2,0)

Hope that helps!

5 0

3 years ago

If you know the 7x8=56 how can you use the Commutative Property of Multiplication to find the product of 8x7?

boyakko [2]

Answer:

The communicative property for multiplication states that the order of the multiplicands and can be swapped and the resulting product stays the same.

A * B = B * A

So if

7*8=56

then the commutative property says

8*7=56 as well since you can swap the order of the terms on the left and not change the result.

This property is true for addition and multiplication. It does not hold for subtraction or division.

Hope that makes sense and helps. (:

5 0

3 years ago

What should be added to both sides of the equation below to complete the square?

Sveta_85 [38]

Answer:

Step-by-step explanation:

x² + 6x = 8

Coefficient of the x term: 6

Divide it in half: 3

Square it: 3²

Add 3² to both sides of the equation to complete the square and keep the equation balanced:

x² + 6x + 3² = 8 + 3²

(x+3)² = 17

8 0

3 years ago

In Exercises 22 describe how the change affects

hodyreva [135]

Step-by-step explanation:

Total Surface Area of original cylinder

= (2×(22/7)×9)(9+24)

=18×22/7×33

=1,866.8

Total Surface Area of new cylinder

=(2×(22/7)×9/3)(9/3+24/3)

=(2×(22/7)×3)(3+8)

=6×22/7×11

=207.4

Change or Ratio of org. cylinder to new cylinder

=1,866.8/207.4

=9.0009

3 0

3 years ago

Mai invests $20,000 at age 20. She hopes the investment will be worth $500,000 when she turns 40. If the interest compounds cont

love history [14]

Answer:

$\approx$ 17.5% per annum

Step-by-step explanation:

Given:

Money invested = $20,000 at the age of 20 years.

Money expected to be $500,000 at the age of 40.

Time = 40 - 20 = 20 years

Interest is compounded annually.

To find:

Rate of growth = ?

Solution:

First of all, let us have a look at the formula for compound interest.

$A = P \times (1+\frac{R}{100})^T$

Where A is the amount after T years compounding at a rate of R% per annum. P is the principal amount.

Here, We are given:

P = $20,000

A = $500,000

T = 20 years

R = ?

Putting all the values in the formula:

$500000 = 20000 \times (1+\frac{R}{100})^{20}\\\Rightarrow \dfrac{500000}{20000} =(1+\frac{R}{100})^{20}\\\Rightarrow 25 =(1+\frac{R}{100})^{20}\\\Rightarrow \sqrt[20]{25} =1+\frac{R}{100}\\\Rightarrow 1.175 = 1+0.01R\\\Rightarrow R \approx17.5\%$

So, the correct answer is $\approx$ 17.5% per annum and compounding annually.

6 0

3 years ago