Determine the value of x and y in the following systems of equations. 3x+y=9 x-y=-1

Answer:

sry i dont know........

Answer:

C≈9.42m

Step-by-step explanation:

C=πd=π·3≈9.42478m

Answer:

78

Step-by-step explanation:

21

Answer:

104

Explanation:

1. Split the figure by the line the larger portion creates.

2. Calculate the area of the left-hand side... 7 · 8 = 56cm squared.

3. You know that the total length of the figure is 15cm. You've already "used" 7cm of that. So... 15 - 7 = 8.

4. Now, we simply do 6 · 8 = 48. Almost there!

5. Finally, add the values of the left side and the right side (48 + 56 = 104)

6. YOUR ANSWER IS 104 cm squared.

Answer:

Yes

Step-by-step explanation:

Angle sum property=180°

The first triangle = 105°+40° = 145°= 180-145=35

The second triangle = 105°+35°=140°=180-140=40

So both are same

Try to find the third angle in both triangles and if the angles of both triangles are same, it means the triangles are similar

Answer:

$52.50

Step-by-step explanation:

42=4x/5

210=4x

x=52 50

Answer:

I think b

Step-by-step explanation:

need a better quality photo

Answer:

B

Step-by-step explanation:

It's a little hard to see but I'm pretty sure it's B because we're looking for a graph that has a slope of -2 so it couldn't be A or D because they have positive slopes since they are pointing up. That leaves B and C. I can't really see but C doesn't look like it has a slope of -2, so I went with B because it has a y-intercept of 3 and looks like it has a slope of -2.

Answer:

88/17

Step-by-step explanation:

5x · 7/8 - 3x · 3/4 = 11

35x/8 - 18x/8 = 17x/8

17x/8 = 11

17x = 88

x = 88/17

Answer:

The y-intercept is 1 and the slope is x

Step-by-step explanation:

Answer:

Product of 2,4,6 is 48❤️❤️❤️❤️

Answer:

with a stick

Step-by-step explanation:

Answer:

i have no clue

Step-by-step explanation: sorry

Answer:

B

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

d = 17 - 22 = 12 - 17 = 7 - 12 = 2 - 7 = - 5

This indicates the sequence is arithmetic with n th term

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 22 and d = - 5, then

[tex]a_{n}[/tex] = 22 - 5(n - 1) = 22 - 5n + 5 = 27 - 5n → B

Answer:

The answer is - 5

Step-by-step explanation:

[tex]x + 55 + 45 + 85 = 180 \\ x + 185 = 180 \\ x = 180 - 185 \\ x = - 5[/tex]

I am a math teacher If you need any explanation you can communicate with me on Whats on this number 01557831028

Answer:

(x-9)(x-2)

Step-by-step explanation:

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form:

y ≥ 5

Step-by-step explanation:

Distribute

2y - 2 = 8

     +2.     +2

2y/2 = 10/2

y = 5

The another way is same as;

Multiplying by 0.5 with original price.

Here,

A shop owner increases some prices by 50%.

We have to find another method to find same condition.

What is the percentage?

A relative value indicating hundredth parts of any quantity is called the percentage.

Now,

A shop owner increases some prices by 50%.

Let the original price is x.

Then, The increase value = x * 50% = x * 50/100 = 0.5x

Hence, To find the increase value we have to multiply by 0.5 with original price.

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Answer:

Middle one

Step-by-step explanation:

Answer:

y=10xz

Step-by-step explanation:

Answer:

y=-0.7x+82.5

Step-by-step explanation:

Answer:

56%

Step-by-step explanation:

9 girls + 5 boys have cameras on

this is 14 out of 25, or 56%

Answer:

$15.30

Step-by-step explanation:

Answer:

The events are dependent.

Step-by-step explanation:

Two events A and B are said to be independent if the fact that one event has occurred does not affect the probability that the other event will occur. If whether or not one event occurs does affect the probability that the other event will occur, then the two events are said to be dependent.

Hope it will help :)

Answer:

denki

because..... pika pika

Answer:

Todoroki Shoto

Todoroki Toya (Dabi)

Takami Keigo

Aizawa Shota (Eraser)

Yamada Hizashi (Mic)

Kayama Nemuri

Bakugo Katsuki

Eijiro Kirishima

Amajiki Tamaki

Hado Nejire

Kendo Itsuka

Jiro Kyoka

Ashido Mina

Kaminari Denki

Shimura Tenko (Shigaraki Tomura)

Kurogiri (Orobo Shimakuro)

Tokoyami Fumikage

Toga Himiko

(Pls don't hate me if I didn''t say deku or uraraka they just aren't my favs and everyone has their own opinions ;w; also i just typed them like that they are in no particular order)

-- Koda

Answer: 3 bags

Step-by-step explanation:

Since a bag has 8 buns, 3 bags would total 24 buns. 2 bags would be 16 buns which is not up to 20 buns. 3 bags is what she'll need as its the best option.

Answer:

The answer: ( 2 , -3 )

Step-by-step explanation:

equation (1): 5x + 2y = 4

equation (2): y = x - 5

step1: sub ( x-5 ) for y in equation 1:

5x + 2 ( x-5 ) = 4

step2: multiply 2 by the bracket:

5x + 2x - 10 =4

step3: add the x term together:

7x - 10 = 4

step4: add 10 for both sides:

7x = 14

step5: divide by 7 from both sides to get the value of x:

x = 2

step6: sub ( 2 ) for x in equation 2 :

y = x - 5

y = 2 - 5

step7: simplify to get the value of y:

y = -3

So the answer is:

x = 2   and   y = -3

( 2 , -3 )

Answer:

[tex]\frac{1}{3}x-3=\frac{x}{3}-3[/tex]

Step-by-step explanation:

[tex]\frac{1}{3}x-3\\\\\frac{1}{3}x = \frac{x}{3} \\\\Find\:L.C.M.\\\\=\frac{x}{3}-3[/tex]

1) with 3/5 as a fraction one whole number can be written as 5/5

so you could rewrite 4 as 3 and 5/5 now subtract 3/5 and you are left with

3 and 2/5

2) one whole number can be written as 7/7

Now you have 4 and 7/7 minus 4/7 to get 4 and 3/7

Using the same steps for the rest:

3) 5 and 3/3 -2/3 = 5 and 1/3

4) 4 and 8/8 - 7/8 = 4 and 1/8

5) 6 and 5/5 - 2/5 = 6 and 3/5

Answer:

1) c

2)a

3)a

Step-by-step explanation:

Its write i rechecked it..

mark me the brainliest

thank u

hope it helped u

Answer:

15 red cars + 24 black cars = 38

The total vehicles are 104.

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

For every 5 red cars there are 8 black cars.

And, There are 24 more black cars than red cars.

Here, For every 5 red cars there are 8 black cars.

Hence, Number of red cars = 5x

Then, Number of red cars = 8x

And, There are 24 more black cars than red cars.

Hence, We get;

⇒ 24 + 5x = 8x

Solve for x as;

⇒ 24 = 8x - 5x

⇒ 24 = 3x

⇒ x = 8

Thus, Number of total vehicles = 5x + 8x

                                                = 5×8 + 8×8

                                                = 40 + 64

                                                = 104

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