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2 years ago

So..... what is 40.99 and 1039,99 rounded to the nerast ten

Mathematics

2 answers:

Ira Lisetskai [31]2 years ago

5 0

Answer:

None of the above

Step-by-step explanation:

KATRIN_1 [288]2 years ago

4 0

Answer:

Step-by-step explanation:

Not sure

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In the xy-plane, the line x + y=k, where k is a constant, is tangent to the graph of y=x^2+3x+1. What is the value of k?

Talja [164]

Slope of tangent line = dy/dx = 2x+3
k is y_intercept of tangent line

2x+3 = -1
x = -2
y = (-2)^2+3(-2)+1 = -1

tangent line passes through point (-2,-1)

k = x+y

k = -2 -1

k = -3

4 0

3 years ago

The price of an item yesterday was $180. Today, the price rose to $279. Find the percentage increase.

olga55 [171]

Answer: 55%

1. 279 - 180 = 99

2. 99 divided by 180 = 0.55

3. 0.55 x 100 is 55.

55 is the percentage

3 0

3 years ago

Read 2 more answers

Any help if possible Thank you ❤

azamat

I believe it's 37CM, I had that question on my finals last year.

8 0

3 years ago

Read 2 more answers

Which of the following statements demonstrates the associative property of multiplication? 4 ∙ (3 ∙ 6) = (4 ∙ 3) ∙ 6 6 ∙ 4 = 4 ∙

torisob [31]

Answer:

4 ∙ (3 ∙ 6) = (4 ∙ 3) ∙ 6

Step-by-step explanation:

The associative property of multiplication states that rearranging the parentheses in an expression will not change the result, as shown.

6 0

2 years ago

Determine the equation of the line that goes through points (1.1) and (3.7).

ValentinkaMS [17]

Answer:

The equation of the line that goes through points (1,1) and (3,7) is $\mathbf{y=3x-2}$

Step-by-step explanation:

Determine the equation of the line that goes through points (1,1) and (3,7)

We can write the equation of line in slope-intercept form $y=mx+b$ where m is slope and b is y-intercept.

We need to find slope and y-intercept.

Finding Slope

Slope can be found using formula: $Slope=\frac{y_2-y_1}{x_2-x_1}$

We have $x_1=1, y_1=1, x_2=3, y_2=7$

Putting values and finding slope

$Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{7-1}{3-1}\\Slope=\frac{6}{2}\\Slope=3$

We get Slope = 3

Finding y-intercept

y-intercept can be found using point (1,1) and slope m = 3

$y=mx+b\\1=3(1)+b\\1=3+b\\b=1-3\\b=-2$

We get y-intercept b = -2

So, equation of line having slope m=3 and y-intercept b = -2 is:

$y=mx+b\\y=3x-2$

The equation of the line that goes through points (1,1) and (3,7) is $\mathbf{y=3x-2}$

4 0

3 years ago