Ask question

Ask question

All categories

3 years ago

7

For which of the following equations (-4, -3 ) not a solution

1 answer:

Fed [463]3 years ago

3 0

Answer: B!

For this you can just plug in, if it’s a true statement it’s a solution.

A. 2(-3)-3(-4)=6
-6+12= 6 that’s a solution.

B. -3(-4) = 4(-3) this is not a solution. 12 does not equal -12

C. -3= 1-4 that’s a solution.

D. 5(-4)+ 2(-3) =-26
-20 -6 = -26 that’s a solution.

You might be interested in

Brady made a scale drawing of a rectangular swimming pool on a coordinate grid. The points (-20, 25), (30, 25), (30, -10) and (-

djverab [1.8K]

Answer:

Length = 50 units

width = 35 units

Step-by-step explanation:

Let A, B, C and D be the corner of the pools.

Given:

The points of the corners are.

$A(x_{1}, y_{1}})=(-20, 25)$

$B(x_{2}, y_{2}})=(30, 25)$

$C(x_{3}, y_{3}})=(30, -10)$

$D(x_{4}, y_{4}})=(-20, -10)$

We need to find the dimension of the pools.

Solution:

Using distance formula of the two points.

$d(A,B)=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$ ----------(1)

For point AB

Substitute points A(30, 25) and B(30, 25) in above equation.

$AB=\sqrt{(30-(-20))^{2}+(25-25)^{2}}$

$AB=\sqrt{(30+20)^{2}}$

$AB=\sqrt{(50)^{2}$

AB = 50 units

Similarly for point BC

Substitute points B(-20, 25) and C(30, -10) in equation 1.

$d(B,C)=\sqrt{(x_{3}-x_{2})^{2}+(y_{3}-y_{2})^{2}}$

$BC=\sqrt{(30-30)^{2}+((-10)-25)^{2}}$

$BC=\sqrt{(-35)^{2}}$

BC = 35 units

Similarly for point DC

Substitute points D(-20, -10) and C(30, -10) in equation 1.

$d(D,C)=\sqrt{(x_{3}-x_{4})^{2}+(y_{3}-y_{4})^{2}}$

$DC=\sqrt{(30-(-20))^{2}+(-10-(-10))^{2}}$

$DC=\sqrt{(30+20)^{2}}$

$DC=\sqrt{(50)^{2}}$

DC = 50 units

Similarly for segment AD

Substitute points A(-20, 25) and D(-20, -10) in equation 1.

$d(A,D)=\sqrt{(x_{4}-x_{1})^{2}+(y_{4}-y_{1})^{2}}$

$AD=\sqrt{(-20-(-20))^{2}+(-10-25)^{2}}$

$AD=\sqrt{(-20+20)^{2}+(-35)^{2}}$

$AD=\sqrt{(-35)^{2}}$

AD = 35 units

Therefore, the dimension of the rectangular swimming pool are.

Length = 50 units

width = 35 units

7 0

3 years ago

James needs to clock in a minimum of 9 hours per day at work. However, the working hours that he records varies between 9 to 12

Sergio [31]

The median is 0 I think and I'm sorry I don't know about the skew of the distribution

5 0

4 years ago

the piece wise defined function f(x) is graphed below. What is the value of f(2)? PLS HELP THIS IS TIMED

Margarita [4]

Answer:

B

Step-by-step explanation:

We have to look at the full dot

5 0

3 years ago

Which of the following are solutions to the equation below? Check all that apply. x2 + x - 20 = 0

Mila [183]

Δ = 1 + 4*20 = 81
x' = (-1 + 9)/2 = 4
x'' = (-1 - 9)/2 = -5
4² + 4 - 20 = 0
(-5)² - 5 - 20 = 0
Ok !

7 0

3 years ago

Read 2 more answers

Assume 450,000 people line up on the streets to see the macys thanksgiving parade in 2012. If attendance is expected to increase

Helga [31]

Answer:

Step-by-step explanation:

130/100*450000=585,000 people

6 0

3 years ago