Ax + 4y = 2, (3, -1) : Find A

Answers

Answer 1

Answer:

Step-by-step explanation:

we can subsitiute 3 and -1 for x and y respectively to get 3A - 4 = 2. After this you add 4 to both sides and get 3A = 6. divide by 3 and you get a = 2


Related Questions

Find the value of X When 6-3x=5x-10x+6

Answers

[tex]6 - 3x = 5x - 10x + 6[/tex]

[tex]6 - x = - 5x + 6[/tex]

[tex]6 + 5x = 6 - 3x[/tex]

[tex]6 = 6 - 3x + 5x[/tex]

[tex]6 = 6 + 2x[/tex]

[tex]2x = 6 - 6[/tex]

[tex]2x = 0[/tex]

Product of two numbers is equal to 0 if at least one of them is 0 . Since 2 is not equal to 0 , x must be equal to 0 .

Which means :-

[tex]x = 0[/tex]

Therefore , the value of x = 0.

A car needs 3 gallons of gas for 70 miles. How much gas would it need for 105 miles

Answers

Answer:

4.5 miles

Step-by-step explanation:

3/2=1.5 . 7-/2 = 35.  35 x 3 = 105 . 1.5 x 3 = 4.5

ASAP 50 POINTS Which expression is a sum of cubes? -64x6y12+125x16y3 -32x6y12+125x16y3 32x6y12+125x9y3 64x6y12+125x9y3

Answers

Answer:

64x6y12+125x9y3 I think. Hope this helps

Answer:

The answer is D

64x6y12+125x9y3

Step-by-step explanation:

Youre welcome

If i earned 5 dollars every two weeks, how much money would I earn in a year?

Answers

Answer:

$130

Step-by-step explanation:

If theres 52 weeks in a year and if you make 5 every 2 weeks you divide 52 and 26 and multiply it by 5.

Answer:

$130 per year

Step-by-step explanation:

52 weeks in a year (typically)

so 52/2= 26

5 * 26 = 130

$130 per year

tell me what dogs for 2 weeks the first week she earned $5.75 the second week she earn $12.50 how much money did TV earn the second week then the first week ​

Answers

Answer: $6.75

Step-by-step explanation:

If you subtract the 12.75 dollars from the second week to the 5.75 dollars from the first week, it added $6.75.

sorry if this is incorrect, the question is worded weird

if a is parallel to B and E is parallel to F what is the value of y??
A.87
B.88
C.91
D.92​

Answers

Answer: D. 92

Step-by-step explanation: (x+1)+(x-3)=180

2x-2=180

2x=182

X=91

(91)+1= 92

Vertical angles are equal than by the transitive property y is also equal to 92

Answer:

92

Step-by-step explanation:

Angle (x+1) is equal to 92 degrees, and x equals 91. If x equals 91, then (x+1) equals 92. (x+1) and angle y are equal angles, so therefore, you can determine that angle y is equal to 92 degrees.

-I got the question right on the test

Hope this helps!

Amanda went to the salon for a haircut. It cost $50. She gave a 15% tip. What was the total cost?

Answers

Answer:

I believe she paid $57.50

Step-by-step explanation:

I turned the percent into a decimal (.15) then I multiplied the decimal by 50 and got 57.50.

PLEASE HELP ME ! :3
How do you write an equation in standard form?

Answers

Answer:

The standard form is just another way to write this equation, and is defined as Ax + By = C, where A, B, and C are real numbers, and A and B are both not zero (see note below about other requirements). As you will see in the lesson below, every line can be expressed in this form.

The "Standard Form" of an equation is: (some expression) = 0 In other words, "= 0" is on the right, and everything else is on the left. Example: Put x 2 = 7 into Standard Form

Step-by-step explanation:

sorry look up example image for standard form

your 6 1/4 - year investment of 40,000 at 14% compounded quarterly is worth how much now?​

Answers

Answer:

The investment of $40,000 is worth $94,529.80 now

Step-by-step explanation:

Compound Interest

It occurs when the interest is reinvested along with the principal, rather than paying it out. When it happens interest in the next period is then earned on the principal sum plus previously accumulated interest.

To calculate the final amount we use:

[tex]{\displaystyle A=P\left(1+{\frac {r}{n}}\right)^{nt}}[/tex]

Where:

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

The investment is for t=6 1/4 years = 6.25 years with an initial balance of P=40,000 at a rate r=14% = 0.14 compounded quarterly. Since there are 4 quarters per year, then n=4.

Applying the formula:

[tex]{\displaystyle A=40,000\left(1+{\frac {0.14}{4}}\right)^{4*6.25}}[/tex]

[tex]{\displaystyle A=40,000\left(1+0.035\right)^{25}}[/tex]

A=$94,529.80

The investment of $40,000 is worth $94,529.80 now

question in the pic help pleaasssee

Answers

Answer:

√3 +2 < √2 +3

Step-by-step explanation:

When you calculate √3 +2 it equals 3.732050808

When you calculate √2+3 it equals 4.414213562

4.414213562 is more than 3.732050808

f(4) if f(x) = 2x - 2?

Answers

Answer:

7

Step-by-step explanation:

Wherever we see an x, we just input 4 to find f(4)

f(4) = 2(4) - 1 = 8 - 1 = 7

Hope this helps!!!!!!!

-3b+2=4b+9
pls answer hahaha

Answers

b=-1 Thats the answer :)

fill in the spaces to complete the equality:

n²+7n=n(__+__)

Answers

Answer:

n²+7n=n(7+n)

Step-by-step explanation:

Using the distributive property on the right side of the equation will make both sides of the equality equal.

The data in which table represents a linear function that has a slope of zero? I can’t figure it out

Answers

Answer:

A

Step-by-step explanation:

Think about it.

y = (0)x + b

this gives

y = b

therefore Y equals a single number regardless of the x value.

This behavior is shown in table A.

Which statement is true about the function f(x)= x?
O The domain of the graph is all real numbers.
The range of the graph is all real numbers.
The domain of the graph is all real numbers less than or equal to 0.
The range of the graph is all real numbers greater than or equal to 0.

Answers

Answer:

D

Step-by-step explanation:

[tex]\sqrt{x}[/tex] only takes positive inputs and only outputs positive integers

Order the fraction and decimals from least to greatest.
0.78, 0.5, 3/5

Answers

Answer:

0.5, 3/5, 0.78

Step-by-step explanation:

Answer:

0.5, [tex]\frac {3}{5}[/tex], 0.78

Step-by-step explanation:

0.5= 50%

[tex]\frac {3}{5}[/tex]=60%

0.78=78%

PLEASE HELP MEEEEEE!!!!!????

Answers

Answer:

thats the answer:

3805.34

Step-by-step explanation:

Answer:

3805.34

Step-by-step explanation:

Multiply by order form the right to the left and then add the final numbers to find the answer.

The triangles shown below must be congruent?

Answers

Answer:

True

Step-by-step explanation:

GEOMETRY PLEASE HELP! THANK TOU SO MUCH :)

Answers

Answer:

11. X=76

Step-by-step explanation:

i need help with this!!!

Answers

Answer:

every option but the first one

Step-by-step explanation:

5 and 7 are verticals meaning they have the same angle degree

7 and 4 are supplementary angles meaning the sum of them = 180

1 and 7 are corresponding meaning they have the same angle degree

Basically just agreeing with him on every option but the first one


The rate of change from 23 to 30 is

Answers

Answer:

7

Step-by-step explanation:

write 8/16 in fully reduced fraction

Answers

Answer:

1/2

hope this helps*

Step-by-step explanation:

divide the fraction by 8

Using the quadratic formula to solve 5x = 6x^2 – 3, what are the values of x?

Answers

Answer:

Correct Choice: Second Option

[tex]\displaystyle x=\frac{5\pm \sqrt{97}}{12}[/tex]

Step-by-step explanation:

Standard Form of Quadratic Function

The standard representation of a quadratic function is:

[tex]f(x)=ax^2+bx+c[/tex]

where a,b, and c are constants.

Solving with the quadratic formula:

[tex]\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

We have the following equation to solve:

[tex]5x = 6x^2 -3[/tex]

Rearranging all the terms to the left side:

[tex]6x^2 -5x- 3=0[/tex]

Comparing with the general form of the quadratic equation: a=6, b=-5, c=-3. Apply the formula:

[tex]\displaystyle x=\frac{-(-5)\pm \sqrt{(-5)^2-4(6)(-3)}}{2(6)}[/tex]

[tex]\displaystyle x=\frac{5\pm \sqrt{25+72}}{12}[/tex]

[tex]\boxed{\displaystyle x=\frac{5\pm \sqrt{97}}{12}}[/tex]

Correct Choice: Second Option

6.) In the figure below, the distance from point B to point Dis 1.3, the distance
from point D to point A is 3.7, and B is the midpoint of segment AC. What is the
distance from D to C? (2 pts) *
А
DB
C

Answers


The answer I think is c

Answer:

answer is c

Step-by-step explanation:

The parking spaces in a city lot were created by painting rows of parallel line segments, then painting a line that cuts through each of the parallel segments. A sketch of two parking spaces is shown below. 2 diagonal parallel lines are cut by a horizontal transversal. Where the first parallel line intersects the transversal, the top right angle is angle 1. Where the second parallel line intersects the transversal, the top left angle is angle 2. If m∠2 = 115°, what is m∠1?

Answers

Answer:

65°

Step-by-step explanation:

The consecutive interior angles theorem states that if two parallel lines are cut by a transversal line then the resulting pair of consecutive angles formed are supplementary (that is they add up to 180°).

Given that the painting rows are parallel to each other and a painted line (transversal) cut the parallel lines forming consecutive interior angles m∠1 and m∠2. Therefore:

m∠1 + m∠2 = 180°

m∠1 + 115 = 180

m∠1 = 180 - 115

m∠1 = 65°

Answer:

65

Step-by-step explanation:

just did it in edge  2020

larry gets a 5% wage rise. his new wage is £252 per week. what was larrys wage before his wage rise

Answers

The raise was 5% which is 0.05 as a decimal.

For his new rate his original rate was multiplied by 1.05 ( original + 5%)

To find original amount, divide new amount by 1.05:

252 / 1.05 = 240

His original pay was £240

You can check by multiplying the original pay by 5% and adding:

240 x 0.05 = 12

240 + 12 = 252

is 10227 a rational number?

Answers

Answer:

Yes, 10227 is a rational number

Step-by-step explanation:

10227 is whole number, an integer, a counting number. For a number to be rational it has to be a integer, a counting number, a whole number, a fraction, and a terminating decimal. A decimal that repeats like 3.3333 is also rational because it can be predicted. Pi or 3.14 is not predictable

Please help I’ll give brainiest!!

Answers

Answer:

x=-1

Step-by-step explanation:

You add like terms until you get your equation.

Answer:

x = -1

Explanation:

3(-1) - 10(-1) + 5 = 5(-1) + 17

-3 + 10 + 5 = -5 + 17

(add first before subtracting!)

12 = 12

So, the first answer, x = -1, is the correct answer.

Please mark me Brainliest! I need it to move onto the next level.

Identify the domain and range of the function f(x) = 0.5x + 70

Answers

Answer:

DOMAIN: -infinity < x < +infinity

Interval form: (-infinity, +infinity)

RANGE: -infinity < f(x) < +infinity

Interval notation: (-infinity, +infinity)

Step-by-step explanation:

For Domain: Function has no undefined points nor domain constraints.

For Range: The range of polynomials with odd degree is all real numbers.

hope this helps :)

[EXTREMELY TIME SENSITIVE] Elise gets a free allowance of $6 000 and pays tax at 25% on the next $20 000. She pays at a tax rate of 30% on the rest. If she earns $72 000 per year, how much tax must she pay?

Johan earns $560 per week and works 48 weeks a year. If he gets a tax free allowance of 8 000, pays tax at a rate of 10% on the next $10 000 and 20% on the rest, how much tax will he pay in a year?​

Answers

Answer:

the first one is

Excess of rent paid annually over 10% of annual salary Actual HRA received = Rs 84,000 must not be owned by the person claiming the tax

the next one i cant help with

Step-by-step explanation:

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