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3 years ago

7

Find the missing number so that the equation has no solutions. x+20= – 4x+3

1 answer:

valkas [14]3 years ago

8 0

Answer: Its 3x

Step-by-step explanation:

I don't really know how to explain it.

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Evaluate.<br> 2³ ⁺ 4 · 2 ₋ 7<br> A. 1<br> B. 5<br> C. 9<br> D.36

jonny [76]

Answer:

2³ ⁺ 4 · 2 - 7 = 9

8 + 8 - 7 = 9

Step-by-step explanation:

4 0

3 years ago

six friends went to a basketball game. The price of admission per person was $x. four of the friends paid an extra $5 each for a

lesya692 [45]

Answer:

6x+20 or 2(3x+10)

Step-by-step explanation:

Six friends went to a basketball game and four people paid $5 extra for a t-shirt. To find the total cost, multiply 6 by x and 4 by 5 this add them together:

6*x+4*5

6x+20, If needed you can factor this expression to:

2(3x+10)

7 0

3 years ago

Read 2 more answers

How much is 3 yards

nasty-shy [4]

Answer:

One yard is 3 feet so 3x3=9 9 feet

Step-by-step explanation:

Hope this helped and could really use brianliest

3 0

3 years ago

Read 2 more answers

A machine produces

FrozenT [24]

275. I divided 440 by 48 and then multiplied the answer by thirty.

3 0

4 years ago

Use cubic regression to find a function that fits the following points.

olasank [31]

Answer:

The cubic regression that fits the points $(x,y) =(-2,-16)$ , $(x,y) = (1,5)$ , $(x,y) = (3, 59)$ and $(x,y) =(6,440)$ is $y =2\cdot x^{3}+x+2$ .

Step-by-step explanation:

A cubic polynomial is a polynomial that has the following form:

$y = a\cdot x^{3}+b\cdot x^{2}+c\cdot x + d$ (1)

Where:

$x$ - Independent variable, dimensionless.

$y$ - Dependent variable, dimensionless.

$a$ , $b$ , $c$ , $d$ - Coefficients, dimensionless.

We construct the following system of equations to determine the coefficients of the cubic regression:

$(x,y) =(-2,-16)$

$-8\cdot a +4\cdot b -2\cdot c + d = -16$ (1)

$(x,y) = (1,5)$

$a+b+c+d= 5$ (2)

$(x,y) = (3, 59)$

$27\cdot a + 9\cdot b + 3\cdot c + d = 59$ (3)

$(x,y) =(6,440)$

$216\cdot a + 36\cdot b + 6\cdot c + d = 440$ (4)

The solution of the system of linear equations is:

$a = 2$ , $b = 0$ , $c = 1$ , $d = 2$

The cubic regression that fits the points $(x,y) =(-2,-16)$ , $(x,y) = (1,5)$ , $(x,y) = (3, 59)$ and $(x,y) =(6,440)$ is $y =2\cdot x^{3}+x+2$ .

7 0

3 years ago