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DerKrebs [107]
3 years ago
14

HELPP will give Brainlyest answer!!!

Mathematics
1 answer:
nika2105 [10]3 years ago
3 0

Answer:

Step-by-step explanation:

here you go!!

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There are 68 calories in 1 serving of cereal. If a bowl holds 7 ​servings, how many calories are in the​ bowl?
maria [59]

Answer:

476

Step-by-step explanation:

68 \times 7 = 476

because there are 68calories per serving and there are 7 servings

6 0
3 years ago
Estimated product of 2 1/2 x 2 1/3
tatyana61 [14]
The answer is 35/6. Hope you get it!
6 0
3 years ago
Factor 16b^2 - 40b +25
WINSTONCH [101]
Your answer will be,

ANSWER: (4b - 5)^2

You're welcome :)
4 0
3 years ago
Read 2 more answers
Which points on the curve of x^2 - xy - y^2 = 5 have vertical tangent lines?
algol [13]

We need to differentiate this with respect to x to see if we can find an expression for the derivative of y at various points.  That will be the slope of the tangent to the curve.  Then we want to see where that derivative might be infinite -- i.e., where the tangent is vertical.

 

It's not written as a function, but it can still be differentiated using the chain rule:

 

x2 + xy + y2 = 3

(2x) + (x dy/dx + y dx/dx) + (2y dy/dx) = 0

 

(I used parentheses to show the differentiation of each term in the original equation.)

 

2x + x dy/dx + y + 2y dy/dx = 0

2x + y = -x dy/dx - 2y dy/dx

2x + y = dy/dx (-x -2y)

-(2x + y)/(x + 2y) = dy/dx

 

We have the derivative of y, but it's defined partly in terms of y itself.  That's OK.  Let's go on...

 

So where would the slope be infinite?  That would happen when x + 2y = 0, or y = -x/2

 

Let's plug that in for y in the original equation to find points where that's the case.

 

x2 + xy + y2 = 3

x2 + x(-x/2) + (-x/2)2 = 3

x2 - x2/2 + x2/4 = 3

3x2 / 4 = 3

x2 = 4

x = ±2

 

So we have two x values where the tangent might be vertical.  Let's plug them into the equation and see what the y values are.  First x = 2...

 

x2 + xy + y2 = 3

4 + 2y + y2 = 3

y2 + 2y + 1 = 0

(y + 1)2 = 0

y = -1

 

So at the point (2, -1) the tangent is vertical.

 

Now try x = -2...

 

x2 + xy + y2 = 3

4 - 2y + y2 = 3

y2 - 2y + 1 =0

(y - 1)2 = 0

y = 1

 

So at the point (-2, 1) the tangent is vertical.

8 0
2 years ago
4a + 3 = 15<br> What does (a) equal
olga2289 [7]
4a + 3 = 15
- 3
4a = 12
÷ 4
a = 3
I hope this helps!
5 0
3 years ago
Read 2 more answers
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