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3 years ago

PLEASE HELP IM STRESSING How many roots does this parabola have ? Is it 3,2,1, or 0??

Mathematics

2 answers:

tigry1 [53]3 years ago

4 0

Hello,
I could be wrong but I think it’s 2 because it’s crosses the X-axis 2 times.
Hope this helps!!
Brainliest?

Anna35 [415]3 years ago

4 0

Answer:

Step-by-step explanation:

Roots are the points that pass through the x- axis. And there are 2 passing through the x - axis. The roots are the grew points on the x- axis.

Looks like your teacher used Desmos!

Hope this helps!

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What percent of 700 is 385

mixer [17]

Hope this helped you hope i get brainlist :)

6 0

3 years ago

135 is what percent of 150?

kolbaska11 [484]

Answer:

90%

Step-by-step explanation:

Is means equals and of means multiply

135 = P * 150

Divide each side by 150

135/150 = 150P/150

.9 =P

Change this to percent form by multiplying by 100%

.9*100%

90%

3 0

3 years ago

A pile of sand has a weight of 90kg the sand is put into a small bag and a medium bag and a large bag in the ratio 2:3:7

Finger [1]

90kg of sand had been puted in 3 bags but in 2+3+7=12 parts.
90kg/12=7.5kg
Small bag has 2 parts which is 7.5kg*2=15kg
Medium bag has 3 parts which is 7.5kg*3=22.5kg
Large bag has 7 parts which is 7.5kg*7=52.5kg
2:3:7=15kg:22.5kg:52.5kg
15kg+22.5kg+52.5kg=90kg

3 0

3 years ago

Given the data points, (x, y) of a linear function: (2, 11), (4, 10), (6, 9), (12, 6), what is the function? What is the slope?

NeX [460]

Answer:

The function is $y~=~12 ~-~ 0.5 \cdot x$ .

The slope is $m=-0.5$ .

The y-intercept is $b=12$ .

Step-by-step explanation:

Our aim is to calculate the values m (slope) and b (y-intercept) in the equation of a line :

$y=mx+b$

We have the following data:

$\begin{array}{c|cccc}x&2&4&6&12\\y&11&10&9&6\end{array}$

To find the line of best fit for the points given, you must:

Step 1: Find $X\cdot Y$ and $X\cdot X$ as it was done in the table below.

Step 2: Find the sum of every column:

$\sum{X} = 24 ~,~ \sum{Y} = 36 ~,~ \sum{X \cdot Y} = 188 ~,~ \sum{X^2} = 200$

Step 3: Use the following equations to find b and m:

$\begin{aligned} b &= \frac{\sum{Y} \cdot \sum{X^2} - \sum{X} \cdot \sum{XY} }{n \cdot \sum{X^2} - \left(\sum{X}\right)^2} = \frac{ 36 \cdot 200 - 24 \cdot 188}{ 4 \cdot 200 - 24^2} \approx 12 \\ \\m &= \frac{ n \cdot \sum{XY} - \sum{X} \cdot \sum{Y}}{n \cdot \sum{X^2} - \left(\sum{X}\right)^2} = \frac{ 4 \cdot 188 - 24 \cdot 36 }{ 4 \cdot 200 - \left( 24 \right)^2} \approx -0.5\end{aligned}$

Step 4: Assemble the equation of a line

$\begin{aligned} y~&=~b ~+~ m \cdot x \\y~&=~12 ~-~ 0.5 \cdot x\end{aligned}$

The graph of the regression line is:

5 0

3 years ago

What is 0.4 divided by 0.242? Divide and check your answer using multiplication. Show your work.

Setler79 [48]

0.4 divided by 0.242 = 0.605 then you can either multiply. 0.4 times 0.605 and get 0.242 or you can do 0.242 times 0.605 and get 0.4 either way will work

5 0

2 years ago

Read 2 more answers