I need help quickly!!!

You solve a system of two linear equations by substitution. Your work results in a third equation, which leads you to conclude that the system has infinitely many solutions. Which of the following could be the third equation?

The options are:
5=0
-4=-4
2y=14
3x+10=16

Answers

Answer 1
-4=-4.......................

Related Questions

Número que tiene dos centenas, cero decenas y nueve unidades

Answers

Answer: 209

Step-by-step explanation:

Si un número tiene 2 centenas, significa 200. Si tiene 0 decenas, entonces debería haber un 0 en el lugar de las decenas. Si un número tiene 9 unos, entonces debería haber un 9 en el lugar de las unidades. Debido a esto, el número con Número que tiene dos centenas, cero decenas y nueve unidades es 209.

English answer:

If a number has 2 hundreds, it means 200, and there should be a 2 in the hundreds place. If it has 0 tens, then there should be a 0 in the tens place. If a number has 9 ones, then there should be a 9 in the ones place. Because of this, the number with Number that has two hundreds, zero tens, and nine ones is 209.

please help me on this !!! :))) ill give brainiest

Answers

it is y=5 and x=10 !!!!!

I need help!!! I don’t know what to do

Answers

Answer:

5km

Step-by-step explanation:

1/2xbxh

1/2x 2x5= 5

Answer:

5 km.

Step-by-step explanation:

1/2 times base times height.

1/2 times 5 times 2

= 5


Enter the number that belongs in the green box.

Answers

x = 90°

that's the answer

Answer:

90

Explanation

vertical angles and right angles in a quadrilateral

Find the values of and y the figure given below and choose the appropriate result ABC and XYZ

Answers

Answer:

y = 8

x = 17

Step-by-step explanation:

We can find the missing values using similarity ratio

15/30 = y/16 cross multiply expressions

30y = 240 divide both sides by 30

y = 8

Now do the same for x

15/30 = x/34 cross multiply expressions

30x = 510 divide both sides by 30

x = 17

How does rewriting the mixed numbers as whole numbers and fractions make it easier to multiply?

Answers

Answer:

A

Step-by-step explanation:

Label ABC with the following information.
BC = 61
m/A = 31°
Find AC.

Answers

Are you doing sohcahtoa? Or are you finding aide measures

In a fundraiser, Mrs. Smith pledges $1 for each mile walked . If Sam walks 20 miles how much will Mrs. Smith donate?

Answers

$20 dollars because if she donates $1 for every mile and Sam walks 20 miles the she will donate=$20

The sum of the first n consecutive even numbers can be found using S=n^2+n where n ≥ 2. What is the value of n when the sum is 210?

Answers

Answer:

n = 14

Step-by-step explanation:

Given the sum of the first n consecutive even numbers expressed as

S=n^2+n where n ≥ 2.

If S  = 210, then;

210 = n² + n

n² + n - 210  = 0

Factorize

n = -1±√1²-4(-210)/2

n = -1±√1+840/2

n = -1±√841/2

n = -1±29/2

n = -1+29/2 and -1-29/2

n = 28/2 and -30/2

n = 14 and -15

Since n ≥ 2, hence the required value of n is 14

Pls help!! Zoom in to see better

Answers

Answer:

4×[tex]10^{12}[/tex]

Step-by-step explanation:

My calculator

Put them in order :2.34,-3,5,2

Answers

Answer:

-3,2,2,5,34

Step-by-step explanation:

Answer:-3,2,2,5,34

Step-by-step explanation:

Just some 7th grade math so help -_-

Answers

Answer:

5.95

Step-by-step explanation:

an increase of 70% on to 100% = 170% - 1.7 multiply the price by 1.7 = 3.50 x 1.7 = 5.95 btw i am on 7 th grade too

18 = r/3 what is r???

Answers

Answer:

54

Step-by-step explanation:

r/3 = 18

r/3 * 3 = 18 * 3

r = 54

Answer:

54

Step-by-step explanation:

multiplication is the opposite of division so you can do 18*3=54 and you can check that by dividing 54 and 3 and the answer is 18

For what value of 'k will (x - 1) be a factor of 4x^3 +kx^2 - 7x - 10?

Answers

Answer:

k = 13

Step-by-step explanation:

If (x-1) is a factor, then f(1) = 0

4*1 + k*1 - 7*1 - 10 = 0

4 + k  - 7 - 10 = 0

      k - 13     = 0

                k = 13

What are the first 3 terms in. t(n)=-2n+7

Answers

Answer:

The first 3 terms of the sequence [tex]t(n)=-2n+7[/tex] are:

[tex]5, 3, 1[/tex]

Step-by-step explanation:

Given the sequence

[tex]t(n)=-2n+7[/tex]

Here [tex]n[/tex] represents any term number in the sequence

Determining the first term

substitute n = 1 in the sequence to determine the first term

[tex]t(n)=-2n+7[/tex]

[tex]t(1)=-2(1)+7[/tex]

[tex]t(1)=-2+7[/tex]

[tex]t(1) = 5[/tex]

Determining the 2nd term

substitute n = 2 in the sequence to determine the 2nd term

[tex]t(n)=-2n+7[/tex]

[tex]t(2) = -2(2) + 7[/tex]

[tex]t(2) = -4 + 7[/tex]

[tex]t(2) = 3[/tex]

Determining the 3rd term

substitute n = 3 in the sequence to determine the 3rd term

[tex]t(n)=-2n+7[/tex]

[tex]t(3) = -2(3) + 7[/tex]

[tex]t(3) = -6 + 7[/tex]

[tex]t(3) = 1[/tex]

Therefore, the first 3 terms of the sequence [tex]t(n)=-2n+7[/tex] are:

[tex]5, 3, 1[/tex]

what is this property 25x0=0

Answers

Answer:

zero property

Step-by-step explanation:

if it equals zero its zero property

Use the inequality sign to show which situation has the greater unit rate.
10 tomatoes for $3.15
>
18 potatoes for $4.10.

Answers

Answer:

10 tomatoes for 3.15 > 18 potatoes for 4.10

Step-by-step explanation:

questions in this section.
1. State whether each of the following statements is TRUE or FALSE on the line provided
a.
All whole numbers are integers.
b. The number 2 is the only prime number that is an even number.
C.
An odd number can be a prime number.
d. The number 1.5 is an integer.
e. Zero is NOT a natural number.​

Answers

Answer:

a true

b true

c true

d false

e true

Required
1. Find the missing length of the right triangle when "a" and "b" represent leg length and "c"
represents the length of the hypotenuse. If necessary, round to the nearest tenth
B=5
C=12

Answers

Answer:

12^2-5^2=a^2

144-25=a^2

119=a^2

A=10.91

Step-by-step explanation:

How many terms are in the expression 6y-7+4y-2a

Answers

Answer: 3

Step-by-step explanation:

6y, 4y, and 2a

DO NOT ANSWER WITHOUT SHOWING YOUR WORK

2. A supermarket display consists of boxes of cereal. The bottom row has 33 boxes. Each row has five fewer boxes than the row below it. The display has six rows.

(a) Write and use a function to determine how many boxes are in the top row. Show your work.

(b) Use the appropriate formula to determine the number of boxes in the entire display. Show your work

Answers

Answer:

a. f(x)=58-5(x-1); there are 58 boxes in the top row.

b. 273 boxes

Step-by-step explanation:

There are 33 boxes at the bottom row, and there are 5 fewer boxes than the row before it meaning that each row above the bottom row has five more boxes than the one below it.

Basically:

bottom row (with 33 boxes) -->5th row-->4th row-->3rd row-->2nd row-->1st row

each arrow adds five boxes, so if you add 5 boxes for each arrow, there is a total of 58 boxes on the 1st row.

check:

2nd row:

f(x)=58-5(x-1)

f(2)=58-5(2-1)

f(2)=58-5(1)

f(2)=58-5

f(2)=53

and we know that 58 (first row)-5=53 (second row; has to have five fewer boxes) so the function works.

now we can use the formula to find the other row values:

3rd row:

f(x)=58-5(x-1)

f(3)=58-5(3-1)

f(3)=58-5(2)

f(3)=58-10

f(3)=48

4th row:

f(x)=58-5(x-1)

f(4)=58-5(4-1)

f(4)=58-5(3)

f(4)=58-15

f(4)=43

5th row:

f(x)=58-5(x-1)

f(5)=58-5(5-1)

f(5)=58-5(4)

f(5)=58-20

f(5)=38

so, we have the row values from top to bottom:

58, 53, 48, 43, 38, 33

now we just have to add them up, giving us 273 boxes in total.

A polynomial equation with rational coefficients has roots +5 plus 12 i and −−negative 9 minus 7 i. List two more roots of the equation.

Answers

Answer:

The additional roots are: [tex]5 - 12i[/tex] and [tex]-9 + 7i[/tex]

Step-by-step explanation:

Given

Roots: [tex]5 + 12i[/tex] and [tex]-9 -7i[/tex]

Required

Determine two additional roots

For a polynomial with two rational roots, the additional roots are the conjugates of the roots.

Take for instance, the following expression:

[tex]a + \sqrt b[/tex]

The conjugate of [tex]a + \sqrt b[/tex] is: [tex]a - \sqrt b[/tex].

Having established how to determine the additional roots, we proceed to determine the roots.

The conjugate of [tex]5 + 12i[/tex] is [tex]5 - 12i[/tex] and the conjugate of [tex]-9 -7i[/tex] is [tex]-9 + 7i[/tex]

Hence, the additional roots are: [tex]5 - 12i[/tex] and [tex]-9 + 7i[/tex]

A car moving on a highway covers the first 400.0 m in 18.0s and then covers the next 250.0 m in 24.0 s.

What is the average speed of the car?

Answers

Answer: 15.48 m/s

Step-by-step explanation:

The following information can be gotten from the question:

Total distance covered by the car will be:

= 400m + 250m

= 650m

Total time taken = 18.0s + 24.0s = 42s

Average speed = Distance/Time

= 650/42

= 15.48 m/s

Pls help branliest 100 points if right question on the photo

Answers

Answer:

You can solve question 9 and 10 the same way I did. Hope this helps, thank you !!

Answer:

You can solve question 9 and 10 the same way I did. Hope this helps, thank you !!

THANKS  

0

por que se a incrementado el uso del oxigeno medicinal en la epoca de pandemia​

Answers

por el coronavirus

dificulta la respiracion

espero te ayude

9.Find the side of a cube whose surface area is 5400cmsquare.

Answers

Answer:

a=square root of a/6 = square root of 5600/6 = 30

i would like to have my brainliest naw, thx

1)) Tammy treated her sister to lunch while visiting her in Somerville. Their lunch cost $350,
and the sales tax in Somerville is 4%. If Tammy left a 20% tip on the $350, how much in
total did she pay?

Answers

Answer:

the other amount of cash she pays equals to 24 percent so times 350 by 1.24 which equals to $434

Answer:434

Step-by-step explanation:

Total price with $350

Sales tax 4% = $14

And tip 20%= $70

Total paid= $434

Domain and range anyone?

Answers

Answer:

second one

Step-by-step explanation:

range is the y values

I need help! If you can help me with this I can mark you!

Answers

Answer:

I think it is 82 degrees or 102 degrees depend if you pick the 10s or 100s

Step-by-step explanation:

Answer: wssp also "B)" is a face

Step-by-step explanation:

Solve for
9(x + 1) = 25+x

Answers

Answer:

2

Step-by-step explanation:

9(x+1)=25+x

9x+9=25+x

9x-x=25-9

8x=16

x=16/8

x=2

The answer for this question is x=2
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