look at the equations below
ax+ 3y=-5
2x-6y=10

Answers

Answer 1

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Look At The Equations Below Ax+ 3y=-5 2x-6y=10
Look At The Equations Below Ax+ 3y=-5 2x-6y=10
Answer 2

Answer:

Step-by-step explanation:

I assume that they want the value of a when the solution exists.

2(ax+3y)+2x-6y=2(-5)+10

2ax+6y+2x-6y=-10+10

2ax+2x=0

ax+x=0

ax=-x

a=-1

You could then solve for x and y if you wanted x=5 and y=0

Unless a was a typo :)


Related Questions

write the word sentence as an equation 5 less than half a number x is 20. helps plzzz

Answers

Answer:

0.5x-5=20

Step-by-step explanation:

hope this helps

what grade is this for

How likely are you to roll a B on a standard die?
A. 0/6

B. impossible

C. This question cannot be answered because there is not a Bon a standard die.

Answers

Answer:

A

Step-by-step explanation:

because you dont have a chance

Prove that 17^16+17^14 is divisible by 5

Answers

We'll use the exponent rule that a^(b+c) = a^b*a^c

to break up 17^16 into 17^(14+2) = 17^14*17^2

That allows us to factor like so

17^16+17^14

17^14*17^2+17^14*1

17^14(17^2 + 1)

Computing 17^14 is a lot more difficult compared to computing 17^2 + 1, assuming you only could use paper and pencil.

Note that 17^2 = 17*17 = 289, so 17^2 + 1 = 289+1 = 290

Because 290 ends in a 0, this means that 5 is a factor

290 = 5*58

This makes 5 to be a factor of the original expression.

----------------

So overall,

17^16+17^14 = 17^14(17^2 + 1) = 17^14*290 = 17^14*5*58 = 5*17^14*58

The stuff "17^14*58" doesn't matter. All we care about is that factor of 5.

Since 5 is a factor, this means that 17^16+17^14 is a multiple of 5, or 17^16+17^14 is divisible by 5.

Phrased another way, 17^16+17^14 all divided over 5 leads to some integer. In this case, the integer would be the result of 17^14*58.

Please help I need a answer

Answers

Answer:

b) 2 20/100

Step-by-step explanation:

2.20 = 2 2/10

so, if that fraction is multiplied by 10/10 then it's still the same.

Answer: Not here is the answer

Step-by-step explanation:

To write 2.20 as a fraction you have to write 2.20 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.

2.20 = 2.20/1 = 22/10

And finally we have:

2.20 as a fraction equals 22/10

Determine the amount of each unknown




Cost of the item $300


Sales tax _______

Amount of tax ________

Total cost $360

Answers

Answer:

Sales tax:20%

Amount of tax:$60

20 for sales tax and 60 for taxes

The Statistical Abstract of the United States reported that the average cost per day of owning an automobile in the United states is $7.62. This includes the cost of the car, general maintenance, gasoline, and insurance. A researcher claims that college students' average daily ownership expenses are less than the national average. A random sample of 54 college students who own cars found the average cost per day to be $6.78 with standard deviation $1.77. Use a 5% level of significance to test the claim that a college student's average daily ownership expenses are less than the national average. State the Null and Alternate Hypotheses, calculate the test statistic, compute the P value for this test, state the alpha value, then state your conclusion. Is there enough evidence to support the claim?

Answers

Answer:

Step-by-step explanation:

The null and the alternative can be computed as:

[tex]H_o : \mu = 7.62[/tex]

[tex]H_1 : \mu < 7.62[/tex]

[tex]Claim: \mu < 7.62[/tex]

[tex]\alpha= 0.05[/tex]

The critical value for a left-tailed test at [tex]\alpha= 0.05[/tex] = -1.645

The test statistics can be computed as:

[tex]Z = \dfrac{\overline x - \mu}{\dfrac{\sigma}{\sqrt{n}} }[/tex]

[tex]Z = \dfrac{6.78 - 7.62}{\dfrac{1.77}{\sqrt{54}} }[/tex]

[tex]Z = -3.487[/tex]

The P-value = (Z< -3.487)

The P-value = 0.00024

Decision Rule: TO reject [tex]\mathbf{H_o}[/tex] at [tex]\alpha= 0.05[/tex], if test statistics is less than the critical value (left tailed)

Conclusion: We reject  [tex]\mathbf{H_o}[/tex] at ∝ = 5%, thus there is enough evidence to support the claim that the college students average daily ownership expenses are less than the national average.

Jesse looks out the attic window of his home, which is 22 ft above the ground. At an angle of elevation of 35° he sees a bird sitting at the very top of the large high rise apartment building down the street. How tall is the high rise apartment building, if the two buildings are 75 ft apart? (Round answer to 2 decimal places)

Answers

Answer:

Step-by-step explanation:

Which of the following equations represents a line that is perpendicular to the line represented by x + 2y = 6 and passes through the point (3 , –4)?

Answers

Answer:

y=2x-10

Step-by-step explanation:

First change to equation into slope intercept form

2y=-x+6

y=-1/2x+3

slope=2 (beacause it is perpendicular)

y--4=2(x-3)

y+4=2x-6

y=2x-10

The graph shows the distance you and your friend drive on a trip. Find the slope of your line. For your answer, just type the number. *

Answers

Answer:

there is no picture

Step-by-step explanation:

im sorry

An observer for a radar station is located at the origin of a coordinate system. Find the
bearing of an airplane located at the point (0.4). Express the bearing using both methods
One expression for the bearing uses a single angle measure. The bearing using this method is _?

Answers

Answer: 0.4 >-8 /9(8+7)

Sorry if it isn't correct!!

NOW I HAVE 20 MINS LEFT PLS HELPPPPPPP!!! Which graph shows the result of dilating this figure by a factor of One-third about the origin? On a coordinate plane, triangle A B C has points (negative 6, 6), (6, 6), (6, negative 6). On a coordinate plane, triangle A prime B prime C prime has points (negative 2, 2), (2, 2), (2, negative 2). On a coordinate plane, triangle A prime B prime C prime has points (negative 3, 3), (3, 3), (3, negative 3). On a coordinate plane, triangle A prime B prime C prime has points (Negative 18, 18), (18, 18), (18, negative 18). On a coordinate plane, triangle A prime B prime C prime has points (negative 12, 12), (12, 12), (12, negative 12).

Answers

Answer:

On a coordinate plane, triangle A B C has points (negative 6, 6), (6, 6), (6, negative 6). On a coordinate plane, triangle A prime B prime C prime has points (negative 2, 2), (2, 2), (2, negative 2).

Step-by-step explanation:

This is the only answer where the scale factor goes down a factor 1/3 from the pre image to new image

Help me out please I need you’re help with this question ✏️

Answers

the answer to your question might be (B).

catetos de un triangulo regtangulo​

Answers

Answer:

In English -

The legs are the sides opposite the acute angles of a right triangle. The legs are the lesser sides of the right triangle. The hypotenuse is the longest side of the right triangle.

In Spanish -

Los catetos son los lados opuestos a los ángulos agudos de un triángulo rectángulo. Los catetos son los lados menores del triángulo rectángulo. La hipotenusa es lado mayor del triángulo rectángulo.

A study is conducted to investigate whether customer satisfaction is greater among computer companies that offer tech support versus those that do not offer tech support. A random sample of 50 customers are selected from among those that purchased computers that offer tech support. A separate random sample of 40 customers are selected from among those that purchased computers that do not offer tech support. The study found that the mean satisfaction rating was significantly greater among customers that purchased computers that offer tech support. Which of the following is the best description of this study?
A) An experiment using a completely randomized design.
B) An experiment using a randomized block design.
C) An experiment using a matched pairs design.
D) An observational study using a simple random sample.
E) An observational study using a stratified sample.

Answers

Answer:

E) An observational study using a stratified sample.

Step-by-step explanation:

This study is not an experiment because the customers were not subjected to any treatment but just observation from those selected. Also, the sampling method used was stratified sampling because we see that random samples were selected independently from two unique populations which are population of those that purchased computers and those that offer tech support.

Therefore the correct option is E.

Question 7
Write the integer that is equivalent to |10|

Answers

Answer:

10

Step-by-step explanation:

William earns £9.30 for 1 half hours of work.

Work out how much he would earn for:

A) 30 minutes

B) 5 hours

Answers

Answer:

a)3.10

b)31

Step-by-step explanation:

a) 1 half hour = 90 min

90÷30=3

9.30÷3=3.10

b)5 hrs -> 300 min

300÷30=10

10x3.10=31

What is the best first step in solving the equation 3 + 36x = 5?

Answers

Flip the question around. Ex: 36x = 5-3

answer please due today

Answers

The an swear is A and D

Answer:

Part a: A

Part b: B

Step-by-step explanation:

a) A

10% of 895 = 0.1 × 895 = 89.5

b) B

135 ÷ 10% = 1350

Show work please thank you.

Answers

Answer:

x = 8, so 6x = 48 and 4x + 10 = 42

Step-by-step explanation:

This is a right angle, so we can say that 6x + 4x + 10 = 90 = 10x + 10 = 90 = 10x = 80 = x = 8.

help plsssss rnnnrnnnn

Answers

Answer:

66

Step-by-step explanation:

Since the triangels are similar, 3x+18=4x+2.

Let's solve that.

3x+18=4x+2

16=x

THIS IS NOT THE VALUE OF THE ANGLE! We have to plug x into one of the equations to find the answer.

3(16)+18=66

which is greater 1/4 or 3/4 ? ​

Answers

Answer:

3/4

Step-by-step explanation:

We have two fractions, 1/4 and 3/4. Lucky they have the same denominator :

Which is the number under the line, which means their capacity is the same amount. Now we just have to see the greater numerator (the number above the line).

So since 3 is greater than 1

Therefore 3/4 is the answer

Answer:

You answer would be 3/4

Step-by-step explanation:

3/4 is larger than 1/4.

The side of a square measures 4 inches long. Which of the following statements are true Choose all that apply

The area of the square is 16 inches

The area of the square is equal to the perimeter of the square

The perimeter of the square is 2 inches less than the area of the square

The perimeter of the square 8 inches

Answers

Answer:

area of the square is 16 inches

area of the square = perimeter of the square

Step-by-step explanation:

each side of the square is 4" so

A = 4 x 4 or 16 sq in

P = 4 + 4 + 4 + 4 = 16 in

In horse racing, a trifecta is a type of bet. To win a trifecta bet, you need to specify the horses that finish in the top three spots in the exact order in which they finish. If eight horses enter the race, how many different ways can they finish in the top three spots

Answers

Answer: 336 different ways

Step-by-step explanation:

Ok, we have a total of 8 horses, and we have 3 places.

First, second, third.

The total number of combinations will be equal to the product of the number of possible options that we have in each place.

For the first place, we could have any of the 8 horses, so there are 8 possible options.

For the second place, we will have 7 horses (because one is already in the first place) then here we have 7 options.

For the third place, we will have 6 horses (because one is in the first place and another is in second place) then here we have 6 options.

The total number of different ways in which the horses can finish is:

C = 8*7*6 = 336 different ways

Please help - Factor to create an equivalent expression using the GCF: 20x - 10?

Answers

Answer:

10(2x-1)

Step-by-step explanation:

Since the GCF (greatest common factor) of 20 and 10 is 10 We factor out the 10.

=> 10(2x-1)

Can some write the correct inequality graph below

Answers

Answer:

x≥-6

Step-by-step explanation:

How many pizza can be bought with 125$

Answers

Answer:

depends how much the pizza is

Doy 10 puntos al que me responda esto:

2 fracciones equivalentes a:

7/6

8/3

5/4

Answers

Doy 10 puntos al que me responda esto:

2 fracciones equivalentes a:

Responda:

7/6

5/4

Answer:

7/6

5/4

Step-by-step explanation:

3. In class, you learned how to find the area of irregular shapes by breaking into regular shapes. For the picture below, you are going to calculate its area. For this problem, you must:
• Draw how you broke up the shape
• Show the work for how you found the area of each piece
• Calculate the total area from the pieces

Answers

Answer:

57.5

Step-by-step explanation:

if you break it down into smaller shapes, there's a semicircle, three triangles and a rectangle.

circle πr² = π 2² = 4π² = 39.5

triangle 1 bh = (3)(2) = 6

triangle 2 bh = (4)(1) = 4

triangle 3 bh = (2)(4) = 8

Add them all up to get total area

6 + 4 + 8 + 39.5 = 57.5

Pls help me I don't understand :/​

Answers

My best answer would be 21% of 300 is ( 63 )

the mean age of 5 people ina room is 32 years. A person enters the room.The mean age is now 34.What is the age of the person who entered the room?​

Answers

Answer:

32

Step-by-step explanation:

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