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Flauer [41]
3 years ago
6

What is negative 5(2+6)+7x

Mathematics
1 answer:
tatiyna3 years ago
4 0
-5(2+6)+7x= 
-5*8=-40
-40+7x
regroup to get 7x-40

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Brian's kite is flying above a field at the end of a 68m string.If the angle of elevation to the kite measures 70 degrees,how hi
Dvinal [7]

Answer:

h = 63.92\ m

Step-by-step explanation:

Given:

Angle of elevation = 70°

Length of string = 68 m

We need to find the height of the kite.

Solution:

Requirement figure attached in file.

Where:

BC = 68 m

AC = h (Height of the kite)

∠ABC = 70°

Using Cosine rule to find the height of the kite.

AC = BC\times sin(70)

h = 68\times 0.94

h = 63.92\ m

Therefore, height of the kite from Brian's head h = 63.92\ m.

4 0
4 years ago
Find the absolute maximum and minimum values of the function over the indicated​ interval, and indicate the​ x-values at which t
Yakvenalex [24]

Answer:

a. Maximum= 27, minimum= -5

b. Maximum= 19, minimum=-37

Step-by-step explanation:

We have the function f(x)=8x-5. Since the function correspond to a line, then the maximum and minimum values of the function over an interval are in the endpoints of the interval.

Observe that if the line has negative slope then the minimum value is in the right endpoint. If the line has positive slope the minimum value is in the left endpoint of the interval.

The function f(x) has slope m=8. Then

a. the minimum value of f(x) in the interval [0,4] is reach when x=0, and the minimum is f(0)=8*0-5=-5 and the maximum is f(4)=8(4)-5=32-5=27

b. the minimum value of f(x) in the interval [-4,,3] is reach when x=-4, and the minimum is f(-4)=8(-4)-5=-32-5=-37 and the maximum is f(3)=8(3)-5=24-5=19

3 0
4 years ago
X+1 ^ 16 what is the coefficient of x^5
kirza4 [7]
Binomial theorem:

(x+1)^{16}=\displaystyle\sum_{k=0}^{16}\dbinom{16}kx^{16-k}1^k=\sum_{k=0}^{16}\dbinom{16}kx^{16-k}

The x^5 term corresponds with the term in the sum for which 16-k=5\implies k=11. For this k, we get

\dbinom{16}{11}x^{16-11}=\dbinom{16}{11}x^5

So the coefficient you want to find is

\dbinom{16}{11}=\dfrac{16!}{11!(16-11)!}=4368
8 0
3 years ago
Hellp mee please because I don't know how to do this thing I offer 100 for who has the right answer
weqwewe [10]

Answer:

y = 1/4x - 3

Step-by-step explanation:

Rise/run  =  1/4

y intercept =  -3

y = 1/4x - 3

8 0
3 years ago
Read 2 more answers
BD is the angle bisector of ZABC<br> \sx-y<br> B<br> 2x+y<br> D<br> 14+y<br> /x+13<br> x=[?]
NemiM [27]

Answer:

x = 7

Step-by-step explanation:

BD is an angle bisector of ∠ABC,

Therefore, by angle bisector theorem,

∠ABD ≅ ∠CBD

m∠ABD = m∠CBD

(2x + y) = (14 + y)

2x = 14

x = 7

3 0
3 years ago
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