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ANTONII [103]
3 years ago
9

If x+2 is a factor of the polynomial: 3x²+kx, then the value is​

Mathematics
1 answer:
Simora [160]3 years ago
3 0

Answer:

k = 6

Step-by-step explanation:

(x+2) is a factor of 3x²+kx so if we solve (x+2) = 0 that will give us one of the solutions of x for 3x²+kx = 0, and then we can substitute that solution in and find the value of k.

So to find a solution, (x+2) = 0 and therefore x = -2

Now substitute x = -2 into 3x²+kx = 0

so 3(-2)²+k(-2) = 0

12 - 2k = 0

2k = 12

k = 6

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Can someone please help me with this
lana [24]

Answer:

3x-10+70°=180°(Supplementary angles)

3x+60°=180°

3x=180°-60°

3x=120°

3x/3 =120°/3

x=40°

Step-by-step explanation:

Hope that this is helpful.

Have a wonderful day.

6 0
2 years ago
You have 10 tbsp of onion powder.
evablogger [386]

Answer:

we can make 5 servings of spice rub from 10 table spoons of onion powder

Step-by-step explanation:

Given the data in the question;

2 table spoon of onion powder makes one serving of spice rub.

Total table spoons of onion powder available = 10

So Let x represent the number of servings of spice rub we can make from our 10 table spoons of onion powder ;

2 table spoons = 1 servings

10 table spoons = x servings

we cross multiply;

x servings × 2 table spoons = 10 table spoons × 1 servings

x servings = ( 10 table spoons × 1 servings ) / 2 table spoons

x = 10 / 2

x = 5 servings

Therefore, we can make 5 servings of spice rub from 10 table spoons of onion powder

3 0
3 years ago
Find the equation of the line using the point-slope formula. Write the final equation using slope-intercept form. (1,2) with a s
Lilit [14]

Answer:

y-2=\displaystyle -\frac{3}{4}(x-1)

OR

y=\displaystyle -\frac{3}{4}x+\frac{11}{4}

Step-by-step explanation:

Hi there!

Point-slope form: y-y_1=m(x-x_1) where <em>m</em> is the slope of the line and (x_1,y_1) is a given point

Given that the slope is -3/4, we can plug it into y-y_1=m(x-x_1) as <em>m</em>:

y-y_1=\displaystyle -\frac{3}{4}(x-x_1)

We can also plug in the given point (1,2):

y-2=\displaystyle -\frac{3}{4}(x-1)

Slope-intercept form: y=mx+b where <em>m</em> is the slope and <em>b</em> is the y-intercept (the value of y when the line crosses the y-axis)

To write the equation in slope-intercept form, isolate <em>y</em>:

y-2=\displaystyle -\frac{3}{4}(x-1)\\\\y=\displaystyle -\frac{3}{4}(x-1)+2\\\\y=\displaystyle -\frac{3}{4}x+\frac{3}{4}+2\\\\y=\displaystyle -\frac{3}{4}x+\frac{11}{4}

I hope this helps!

8 0
2 years ago
Tiana replaced one Third of the buttons on her coat . If she replaced a total of 3 buttons,how many buttons are on tianas coat i
kompoz [17]

I believe the answer is 9, because 1/3 is .33 so 33%. so 33% is equal to 3 buttons and add another 66% which would be another 6 buttons would add up to 99% in all. after that I don't think they would add a quarter of a button.
7 0
3 years ago
Read 2 more answers
In the himalaya mountains allong the border of tibet and nepal mount everest reaches a record height of 29,035 feet. How high is
Ludmilka [50]

Answer:

Step-by-step explanation:

In miles it is 29,035 / 5280

= 5.5 miles.

In kilometers it is 5.5 / 0.621 kilometres

= 8.857 km.

= 8857 m.

4 0
2 years ago
Read 2 more answers
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