the ordered pair (1,-3) is a solution of the system

The Ordered Pair (1,-3) Is A Solution Of The System

Answers

Answer 1

Answer:

False

Step-by-step explanation:

Find the solution of:

2x + 3y = -7 --› eqn. 1

-x = 2y --› eqn. 2

Rewrite equation 2

-x = 2y --› eqn. 2

Divide both sides by -1

x = -2y

Substitute x = -2y in equation 1.

2x + 3y = -7 --› eqn. 1

2(-2y) + 3y = -7

-4y + 3y = -7

-y = -7

Divide both sides by -1

y = 7

If y = 7, then (1, -3) cannot be the solution of the system of equations.


Related Questions

can you help I'm confused​

Answers

Answer:

x ≤ 5

Step-by-step explanation:

Answer:

x <= 5

Step-by-step explanation:

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Find the simple interest rate of a loan of $5,000 that is made for three years and requires $1,762.50 in interes

Answers

Answer:

11.75%

Step-by-step explanation:

The formula for Simple Interest is given as:

I = PRT

Where in the question

I = Interest = $,1762.5

P = Principal = $5,000

T = Time= 3 years

R = Simple Interest rate ??

To solve for R, the formula is given as:

R = I/PT

R = $1,762.5/5,000 × 3

R = 0.1175

Converting to percentage

= 0.1175 × 100

= 11.75%

what is the answer to this question i need help

Answers

Answer:

[tex]2\sqrt{2}[/tex]

Step-by-step explanation:

h(10) = 2(10) - 8

        = 12

g(h(10)) = [tex]\sqrt{(12)-4}[/tex]

            = [tex]\sqrt{8}[/tex]

            = [tex]2\sqrt{2}[/tex]

From a population of 500 elements, a sample of 225 elements is selected. It is known that the variance of the population is 900. The standard error of the mean is approximately

Answers

Answer:

standard error of the mean (S.E) = 0.06

Step-by-step explanation:

Explanation:-

Given sample size 'n' = 500

Given variance of the Population = 900

The standard deviation of the Population = √900 = 30

The standard error of the mean is determined by

[tex]S.E = \frac{S.D}{\sqrt{n} } = \frac{30}{500} = 0.06[/tex]

Will give brain list!!!!!!!!
Using the order of operations, what should be done first to evaluate 62 +10-(-5)(3) - 5?
A. Subtract 5 from 3
B. Divide 10 by -5
C. Add 6 and 10
D. Evaluate 62






Answers

The answer would be B.

Answer:

can you try and help me with this please? https://brainly.com/question/22223449

Step-by-step explanation:

The order of operations is PEMDAS -

Parenthesis

Exponents

Multiply

Divide

Add

Subtract

So, the first thing would be to solve any parenthesis.

Secondly, you would evaluate the exponent.

From what I can tell, your expression is

(6^2 + 10) / (-5 x 3) - 5

?


In the equivalent ratios 4:7 and 48:x, what is the value of x?

Answers

Answer: 84

Step-by-step explanation: 48÷4= 12 so 12 times 7 is 84

Please, please I need this.

Answers

The range of the set is 17 because the range is the largest number minus the smallest number in this set 93 is the largest and 76 is the smallest therefore you subtract them 93-76=17.

find the sum 0.06 + 2.41 .

Answers

Answer:

2.47

Step-by-step explanation:

0.06+2.41=

2.47

Answer:

you basically just add both equal 2.47

Is it possible to divide 0 by 127 ?

Answers

Answer: It gives you 0 though .

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Anything divided by 0 is 0; It's like multiplying by 0 as well


Which name describes all of the shapes?
A parallelogram
B. quadrilateral
C. rectangle
D. rhombus
E. trapezoid

Answers

Answer:

B

Step-by-step explanation:

A quadrilateral is a shape that has exactly 4 sides.

All of the other shapes have 4 sides but with restrictions

For example, a rhombus has to have equal sides whe a rectangle doesn't

That's why B is the answer.

I hope this helps!!!

Find the inverse function for ​

Answers

Answer:

a. ∛(x+4)/3

Step-by-step explanation:

y = 3x³ -4

step 1: x = 3y³ - 4   (swap x and y)

step 2: 3y³ = x + 4

            y³ = (x + 4) / 3

            y = ∛(x+4)/3    (solve y)

f⁻¹(x) = ∛(x+4)/3    (inverse notation)

PLEASE HELP I NEED IT

What is an equivalent expression for 1.5(3x + 4) + 0.25(6x + 8)?

Answers

Answer:

The equivalent expression is 6x+8.

Step-by-step explanation:

Given expression is:

1.5(3x + 4) + 0.25(6x + 8)

We will solve the expression and combine alike terms.

4.5x + 6 + 1.5x + 2

6x + 8

Therefore,

The equivalent expression is 6x+8.

The equivalent expression is 6x+8 is the correct answer

What is an equivalent expression for 1.5(3x + 4) + 0.25(6x + 8)?

Plzzz be serious and be fast to

Answers

Answer:

i think its c

Step-by-step explanation:

Answer:

I believe it's C... I may be wrong though

Step-by-step explanation:

hav a good day :D

Jeff divided his 1,200 stamps equally among 7 stamp albums. Were there any stamps left over?
If so, how many?


Yes; there was 1 stamp left over.


Yes; there were 3 stamps left over.


Yes; there were 10 stamps left over.


No; there were no stamps left over.

Answers

Answer:

3 stamps were left over

Step-by-step explanation:

Division

When a number m divides evenly by n the remainder is 0. For example, 120 divides exactly by 30 because 120/30=4 and the remainder is 0.

But 120 does not divide exactly by 50 because 120/50 = 2 and leaves a remainder of 20.

Jeff divided his 1,200 stamps equally among 7 stamp albums. If the division of 1,200 by 7 was exact, there won't be any stamp left over. Let's test it.

1,200/7 is 171.4, obviously is not exact, thus There were stamps left over.

How many?

Multiply the lower integer of division 171 by 7 to get: 171*7 =1,197. This means that 1,200-1,197= 3 stamps were left over


PLEASE HELP !!!!!Factor 16x2 - 6x - 7.
A. (2x + 1)(8x - 7)
B. (4x + 7)(4x - 1)
C. (2x - 1)(8x + 7)
OD. (4x - 7)(4x + 1)

Answers

Answer:

Step-by-step explanation:

Here you go mate

Step 1

16x^2-6x-7  Question

Step 2

16x^2-6x-7   Factor

answer

(2x+1)(8x-7)

please help me please please

Answers

A: 75
B: (2,175), (3,225)
x1, y1 x2, y2

225-175 = 50
————
3-2 = 1

50/1
m=50

C: y= 50x+75

If I’m wrong please tell meee but I think I’m right

someone help me pls

Answers

d bc it equals to a number that is rational

Find the length of the missing side.
20 ft
21 ft
The length of the missing side is
ft.

Answers

Answer:

 c^2 = a^2 +b^2

 c^2 = (20 ft)^2 +(21 ft)^2 = 442 ft^2

 c = √(442 ft^2) = 21,02 ft

 

The length of the missing side is 21,02 ft.

Step-by-step explanation:

50a (2-a) when a = 7

Answers

Answer:-1750

Step-by-step explanation: Plug in the variables

50*7(2-7)=350(-5)=-1750

WILL GIVE BRAINLIEST!!!

Answers

Answer:

x= 5; Segment QR is the mid segment and YW is the base of the triangle. Mid segments are half the length of the base.

Step-by-step explanation:

2x - 3 = (x + 9) ÷ 2 Multiply both sides by 2

(2x - 3) • 2 = x + 9

4x - 6 = x + 9 Add 6 to both sides

4x = x + 9 + 6

4x = x + 15 Subtract x from both sides

4x - x = 15

3x = 15 Divide 3 on both sides

x = 15/3

x = 5

Plzzz help mr plzzz mathhh

Answers

Answer:

x = 20

Step-by-step explanation:

First, we need to combine both equations as we know they are create a "straight angle", which is 180 degrees:

2x + 8 + 6x + 12 = 180

Next, we can combine like terms to simplify the equation:

8x + 20 = 180

Now, we can subtract 20 from each side:

8x = 160

Finally, we divide both sides by 8 to find the value of "x":

x = 20

I hope this helps!

-TheBusinessMan

Plzzzzzz help a girl out due in 3 mins iready

Answers

Answer:

14 2/3 is the answer. have a good one

14 and 2/3 I’m pretty sure

A square has sides 5 inches long. what is the approximate length of a diagonal of the square?

Answers

Answer:

20

Step-by-step explanation:

5x4= 20

what is 5x5= bc I really need this

Answers

Answer:

25

Step-by-step explanation:

5 x 5 = 25

Hey could anyone help me with this question :)

Answers

Answer:

cuz i am batman hhhhhhhhhhhh

How many ML are equal to 32 ounces ?

Answers

Answer:

946.3529Milliliters

Step-by-step explanation:

Answer:

946.35295 Milliliters

Step-by-step explanation:

I NEED HELP ASAP AS SOON POSSIBLE TODAY I WILL MARK YOU BRAINLIST Combining like terms before Adding or Subtracting: Answer the following question that combines like terms before simplifying using information that you know
2(2x+4)-3x=12
Answers
x=4

x=8

4

12

Answers

4 373737373737372637

Answer: 4

Step-by-step explanation:

first you remove the parentheses it should look like this (4x+8-3x=12) then you collect the like terms (like terms have the same variable to the same power) it should look like this(x+8=12). then you move the constant to the right then last you calculate it should look like this x=12-8). then you subtract 12 by 8 and 4 is what you get.

Alicia pays $180 to have cable and wi-fi installed in her home. Each month, she will pay $75 month for her cable

Answers

Answer:

In a year she will pay $900

The cost of the installation and a month would be $225

The cost of a year and installation would be $1,080

Step-by-step explanation:

         </3 PureBeauty

           

Anyone completes all of this gets extra points

Answers

Answer: can you take a closer picture

Step-by-step explanation:

Prove each of the following statements about integers by proving thecontrapositive of the statement.A. If 3nis even, thennis even.B. Ifx y zis odd, then at least one ofx; yandzis odd.

Answers

Answer and Step-by-step explanation:

(A) Suppose 3n is even, this implies that the product of 3n is a multiple of two, let's say 2(3k) where k is a real number. Rearranging that, we have 3(2k), let 2k = n. Therefore, n is even.

(B) Suppose xyz is odd, then let x = 2k, y = 2p + 1 and z = 2q + 1. xyz = 2k(2p + 1)(2q + 1) and this is obviously even since it is a multiple of 2.

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