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nikdorinn [45]
4 years ago
6

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?

Mathematics
1 answer:
Sholpan [36]4 years ago
3 0
When a line and a curve are tangent to each other, they are joined together by 1 point (x,y). So, you equate both equations either in terms of x or y. For this problem, let's equate in terms of y.

y = k - x
y = x² + 3x + 1

k - x = x² + 3x + 1
k = x² + 3x + x + 1
k = x² + 4x + 1

This would be the value of k. Since we are not given the common point, it can only be expressed in terms of x or y.
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Two supplementary angles differ by 34. find the angles..​
antiseptic1488 [7]

Answer:

107°

73°

Step-by-step explanation:

Let the two supplementary angles be x° and y°.

x + y = 180....(1)

Since, supplementary angles differ by 34.

Therefore,

x - y = 34....(2)

Adding equations (1) & (2)

x + y = 180

x - y = 34

_________

2x = 214

x = 214/2

x = 107°

Plug x = 107 in equation (1)

107 + y = 180

y = 180- 107

y = 73°

3 0
3 years ago
What is the length of line tAH
TEA [102]
It is 27 or less for tah
8 0
3 years ago
Read 2 more answers
Help please here is a picture:
Ivahew [28]

Answer:

<em>2 1/3, 2 1/4, 2 3/7</em>

Step-by-step explanation:

<u>Mixed Fractions</u>

Mixed fractions are made of an integer part followed by a proper fraction.

Some examples of mixed fractions are:

3 1/2, -4 5/8, 2 2/3

Between two consecutive integers a and a+1, there are infinitely many fractions. The centered number is a 1/2. Any number with its improper fraction part less than 1/2 is closer to a than to a+1.

In our problem, Jayne bought between 2 and 3 pounds of granola. We need to provide a mixed number that is closer to 2 pounds than to 3 pounds.

We can select any number with integer part 2 and a proper fraction less than 1/2.

Examples could be :

2 1/3, 2 1/4, 2 3/7

All of them are less than 2.5

6 0
3 years ago
Given: PRST is a parallelogram m∠T:m∠R=1:3, RD ⊥ PS , RM ⊥ ST Find: m∠DRM
photoshop1234 [79]

Answer:

∠DRM=45°

Step-by-step explanation:

Given: PRST is a parallelogram, m∠T:m∠R=1:3, RD ⊥ PS , RM ⊥ ST.

To find: m∠DRM

Solution: Since, PRST is a parallelogram and then let m∠T=x then m∠R=3x.

From the figure, we get that m∠T+m∠R=180°(Adjacent angles)

x+3x=180°

x=45°

Therefore, m∠T=45° and m∠R=135°.

Also, in parallelogram, opposite angles are equal, therefore m∠R=m∠S=135°.

Now, We know that sum of all the angles of the parallelogram =360°, then

From the quadrilateral DRMS,

∠DRM+∠RMS+∠MSD+∠SDR=360°

∠DRM+90°+135°+90°=360°

∠DRM=360°-315°

∠DRM=45°

3 0
3 years ago
Mrs. Johnson informed her students that their exam will have at most 25 questions.
Natasha_Volkova [10]

Answer:

it would be x>25 because it would either be up to 25 questions or less

7 0
3 years ago
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