2x + y= -1
y=ax?
10. For the system of equations above, what must be
true about the value of a if the system has no
solutions?

Answers

Answer 1

Answer:

a = -2

Step-by-step explanation:

The graphs of the lines would have to be parallel.  So they must have the same slope.   2x + y = -1 changed to slope-intercept form is y = -2x - 1.  Therefore, the slope of that line is -2.   y = ax is in slope-intercept form where the slope is a.  So, a must equal -2.


Related Questions

<3333333333333333333333

Answers

9514 1404 393

Answer:

  55

Step-by-step explanation:

Maybe you want to know the value of x.

The sum of angles in a triangle is 180°. When one of those angles is 90°, as in this right triangle, then the sum of the other two is 90°. That means x° is complementary to 35°.

  x° = 90° -35°

  x = 55

Solve the equation

-2p - 4= 2

Answers

Answer: i believe it is p = -3

Step-by-step explanation:

-2p-4=2

    +4   +4

-2p=6

-2      -2

p=-3

5.28 + 2.4 + what equals to 7.32

Answers

Answer:

5.28+2.4=7.68

is right answer

4x-6+x+6. But if the x was 8 what would it add up to

Answers

Answer:

40

Step-by-step explanation:

The correct answer would be 40.

help! algebra question

Answers

I think it’s y=10x+45 because the line starts at 45 and it’s increasing by 10. If i’m right can you mark me brainliest?

1. In a 30-60-90 triangle, the length of the hypotenuse is 6. What is the length of the shortest side?



A2
B3
C [tex]3\sqrt{2}[/tex]
D[tex]3\sqrt{3}[/tex]
F[tex]6\sqrt{2}[/tex]

Answers

Answer:

i think it’s b

What is the Percentage of 23000

Answers

Answer:

2300000%

Step-by-step explanation:

0.01 = 1%

1 = 100%

23000 X 100 = 2300000%

Hope It Helps

Tara and Edward each painted their bedrooms. They finished in the same amount of time, Even thought Edwards bedroom is bigger. They have 4 hours to start painting the basement before dinner is ready. Who will likely paint a larger part if the basement?

Answers

Answer:Edward

Step-by-step explanation:

Write a line equation in slope-inercept form. (8,4) (-1,-5)​

Answers

Answer:

y=1x-4

Step-by-step explanation:

please help me with this 100 points

Answers

Answer:

2m + 153.5

Step-by-step explanation:

Hey there

2m =  The word times means multiplication. So, multiply 2 and m.

153.5 = The phrase more than means addition. So, add 2m and 153.5.

hope it helped

Answer:

why would you lie about giving the points-

Step-by-step explanation:

Can someone help me? I don’t know how to solve it. Thank you!

Answers

Answer:

C. 5x^2 - 8x + 13

Step-by-step explanation:

Evaluate the expression when b=9 .

24/9 + 8 =

Answer:

Answers

Answer:

Exact Form:

32 /3

Decimal Form:

10. 6

Mixed Number Form:

10

2 /3

Step-by-step explanation:

I NEED HELP PLEASE !!!!!!!

Answers

Answer:

12

Step-by-step explanation:

Change 3/4 to 12/16 by multiply both side by 4 (common denominator)

12/16 divide by 1/16 is 12.


Sue cut 3 pieces of ribbon. Each piece was
ot a foot long. How many feet of ribbon does she have in all? Express your answer as the sum of a whole number and the remaining fractional units. Plz help

Answers

I think the answer is just 3 if all three are just 1 foot long

ANSWWER QUICK IM TIMED

What is the y-coordinate of point W?

On a coordinate plane, point W is 2.5 units to the right and 1.5 units down.
A. -2.5
B. -1.5
C. 1.5
D. 2.5

Answers

Answer:

-1.5

Step-by-step explanation:

the y coordinate is along the vertical axis so because the point is 1.5 units down, the y-coordinate is -1.5

B, -1.5 is the answer

Help plz:)))I’ll mark u Brainliest

Answers

Answer: 3

Step-by-step explanation:

Will it cost more to rent from Company A or Company B if "Ali" rents the bounce house for 3 hours? 5 hours? 10 hours?

Answers

Answer:

3 HOURS : company A costs more

5 HOURS : Cost is the same

10 HOURS : Company B costs more

Step-by-step explanation:

Company A :

Rental fee = $100

Hourly rate = $20

Company B:

Hourly rate = $40

Cost of renting a bounce house from each company for h hours ;

Company A:

Total cost = 100 + 20h

Company B:

Total cost = 40h

If h = 3

Company A:

100 + 20(3) = $160

Company B:

40(3) = $120

FOR h = 5;

Company A:

100 + 20(5) = $200

Company B:

40(5) = $200

FOR h = 10;

Company A:

100 + 20(10) = $300

Company B:

40(10) = $400

someone help me please
13x+7
9x+9

Answers

Answer:

x= 1/2

Step-by-step explanation:

13x+7 and 9x+9 with x inserted in both equal 13.5

(if the equation was 13x+7=9x+9)

13x+7=91 and 9x+9=81

Gabriel receives a 25% raise at his job. If his new pay is $360.00 per week, what was he getting paid before his raise?

Answers

Answer:

360 *.25. then once you get that, subtract the new pay by the .25. 270 is the amount.

Step-by-step explanation:

360 x .25 = 90. then, you doo 360-90=270.

What’s the percentage as a decimal

Answers

Answer:

0.0006

Step-by-step explanation:

Nerissa has 5 pink bows 1 blue bow and 4 purple bows in a box. She will randomly choose 1 bow from the box. What is the probability Nerissa will choose a purple bow
A. 1/2
B. 2/5
C. 1/10
D. 3/5
I’ll mark brainliest

Answers

Answer: The probability is 2/5.

Step-by-step explanation: If there are 5 pink bows, 1 blue bow, and 4 purple bows, there are a total of 10 bows in the box. The probability of choosing a purple one is 4/10 (since there are 4 purple bows). 4/10 simplifies to 2/5.

The probability Nerissa will choose a purple bow is [tex]\frac{2}{5}[/tex].

Here Nerissa has 5 pink bows, 1 blue bow and 4 purple bows in a box.

She will randomly choose 1 box from the box.

What is Probability?  

The ratio of the number of outcomes in an exhaustive set of equally likely outcomes that produce a given event to the total number of possible outcomes.

Now,

Total number of bows = 5 + 1 + 4 =10

Number of purple bow = 4

Probability to choose purple bow = [tex]\frac{Total number of purple bow}{Total number of bow }[/tex]

                                                   =   [tex]\frac{4}{10}[/tex]

                                                   =[tex]\frac{2}{5}[/tex]

So, probability to choose purple bow is 2/5.

Learn more about the Probability visit:

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What is the area of a triangle with a
base of 10 cm and a height of 40 cm?

Answers

Answer:

A=200cm²

Step-by-step explanation:

Answer:

200 cm^2

Step-by-step explanation:

Let us start with the formula for the area of a triangle:

[tex]\triangle Area=\frac{base\ *\ height }{2}[/tex]

In the problem, we are actually given both the base, and the height. Let us plug in these values into the equation above to solve for the area. We have a base of 10 cm, and a height of 40 cm.

[tex]\triangle Area= \frac{10*40}{2} \\\triangle Area= \frac{400}{2} \\\triangle Area= 200[/tex]

Therefore, the area of the triangle is 200 cm^2.

I hope this helps! Please let me know if you have any further questions :)

y varies directly as x. If y = 170 when x = 17, find
y when x = 18.
A) y = 100
B) y = 180
C) y = 289
D) y = 324

Answers

the answer is 180 (B)

4(y - 3) =
Use distributive property to complete the equivalent expression

Answers

Answer:

Step-by-step explanation:

4(y-3) = 4y - 4·3 = 4y - 12

The equivalent value of the expression is A = 4y - 12

Given data ,

Let the equation be represented as A

Now , the value of A is

A = 4 ( y - 3)

On simplifying the equation , we get

A = 4 ( y - 3 )

So , the left hand side of the equation is equated to the right hand side by the value of A = 4 ( y - 3 )

Opening the parenthesis on both sides , we get

A = 4 ( y - 3 )

Using the distributive property , we get

A = 4 ( y ) - 4 ( 3 )

On further simplification , we get

A = 4y - 12

Taking the common factor as 4 , we get

A = 4 ( y - 3 ) = 4y - 12

Therefore , the value of A = 4y - 12

Hence , the expression is A = 4y - 12

To learn more about equations click :

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ANSWER THIS IN SIMPLEST FORM! GIVING OUT BRAINLIEST TO WHOEVER HELPS ME WITH THIS, TYSM!!! ❤️ 50 POINTS

Answers

1. 4/5
20/25 , simplify by 5

2. 2/3
16/24, simplify by 8

3. 2/3
8/12, simplify by 4

4. 2/5
4/10, simplify by 2

5. 5/12, cannot simplify

6. 11/28, cannot simplify

What is the volume of the right cone shown below? 10 O A. 7577 units3 B. 100n units3 C. 1507 units3 375 units3​

Answers

Answer:

168

Step-by-step explanation:

The volume of the right cone shown below is 375π units³.

What is Volume?

Volume of a three dimensional shape is the space occupied by the shape.

Given is a figure of the right cone.

We jave to find the volume of the cone.

The formula to find the volume of the cone is given as,

Volume = [tex]\frac{1}{3}[/tex] π r² h

Here r is the radius of the base of the cone and h is the height of the cone.

Given, r = 10/2 = 5 and h = 45

Volume = [tex]\frac{1}{3}[/tex] π (5)² (45) = 375π units³

Hence the volume of the cone is 375π units³.

Learn more about Volume of the cone here :

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Your question is incomplete. The complete question is as given below.

Jerry has 16 cookies and 4 cupcakes. What is the ratio of cookies to cupcakes in simplest form?
Write the ratio 3 different ways.
HELP giving brainliest

Answers

Hey there!

Ratios can be written in 3 forms, as follows.

x to y

x:y

[tex]\frac{x}{y}[/tex]

So, we will begin by writing your problem's ratio in the fraction form, and simplifying:

[tex]\frac{16}{4}[/tex]

Simplified, this is:

[tex]\frac{4}{1}[/tex]

So, we can take this new ratio and write it in the 3 forms:

4 to 1

4:1

[tex]\frac{4}{1}[/tex]

Have a terrificly amazing day!

Enter the value of z that makes the given equation true.
11.Z = 121

Answers

Answer:

Z=11

Step-by-step explanation:

11Z=121

Z=121/11

Z=11

If we change the -3 to a 3 in the equation what would happen to the graph

Answers

Not enough information luv

A ccompany offers free shipping on orders that weigh less than 3,000 grams. How much is this in kilograms. Be sure to include the correct unit in your answer.

Answers

Answer:

The answer is 5 Kilos.

Step-by-step explanation:

There are 1000 grams in 1 Kilo, thus 1000g= 1k, so 5000g=5k.

Answer:

its 3kg

Step-by-step explanation:

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