Who know the answer to 170 times 4

Answers

Answer 1

Answer:

Answer:

680, hope this helps!

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Which of the following correctly completes the square for the equation below?x^2+2x=19
a. (x+2)^2=20
b. (x+1)^2=23
c. (x+1)^2=20
d. (x+2)^2=23

Answers

Answer:

c. $(x+1)^2=20$

Step-by-step explanation:

Since, for getting a perfect square on the left side of a quadratic equation we follow the following steps,

Step 1 : Make 1 as the coefficient of $x^2$ .

Step 2 : Add both side the square of a number which is half of the x's coefficient.

Given equation,

$x^2+2x=19$ -----(1)

Here, the coefficient of $x^2$ is already one.

And, the middle term is 2,

Half of 2 is 1

Also, 1² = 1

Thus, add 1 on both sides of equation (1),

$x^2+2x+1 = 19 + 1$

$(x+1)^2 = 20$ ( Because (a+b)² = a² + 2ab + b² )

⇒ Option C is correct.

The answer is :

c. (x+1)²=20

To check:
(x+1)²=20 (a+b)²=a²+2ab+b²
x²+2x+1=20
x²+2x=20-1
x²+2x=19

Berto has $12 to put gas in his car. If gas costs $3.75 per gallon, which ordered pair on the graph of the line relating number of gallons of gas, x, to the total cost of the gas, y, includes the greatest amount of gas Berto can buy?

Answers

If gas costs $3.75 per gallon and Berto has $12, then he can purchase 12/3.75 gallons. This is approximately 3.2 gallons. So the coordinate on this line would be (3.2, 12).

Answer: The required coordinate pair is given by

$(x,y)=(3.2,12)$

Step-by-step explanation:

Since we have given that

Total cost of the gas put in his car = $12

Cost of gas per gallon = $3.75

Let the total cost of the gas be 'y'.

Let the number of gallons of gas be 'x'.

According to question, number of gallons of gas is given by

$\frac{\text{Total cost}}{\text{Cost of gas per gallon}}\n\n=(12)/(3.75)\n\n=3.2$

So, the number of gallons is 3.2 approximately.

Hence, the required coordinate pair is given by

$(x,y)=(3.2,12)$

if the range of the function f(x)=x/4 is {28,30,32,34,36}, what is its domain?a. {112, 120, 128, 136, 144}b. {118, 122, 124, 132, 145}c. {110, 118, 122, 124, 137}d. {111, 124, 128, 132, 146}

Answers

$f(x)=(x)/(4)\to y=(x)/(4)\to x=4y\n\ny\in\{28;\ 30;\ 32;\ 34;\ 36\}\n\n4\cdot28=112\n4\cdot30=120\n4\cdot32=128\n4\cdot34=132\n4\cdot36=144\n\nAnswer:D=\{112;\ 120;\ 128;\ 136;\ 144\}\to\fbox{a.}$

Please help me, find the slope and y intercept and then write the linear equation from the x/y table

Answers

Answer:

Step-by-step explanation: table y is going up by 6 and table x is going up by 2 which I would put as a fraction. That would be 6/2 and you divide the fraction. 6 divided by 2 equals 3 so I think the y- intercept would be y = 3x

(I'm sorry if its wrong )

The period of 3cosx/5 is..???