Find the angle between u=〈−2​,5〉 and v=〈5​,2〉 to the nearest tenth of a degree.

Answer:

26. $46.75

27. $4.80

28. $32.00

29. $3.60

Answer:

it depends on the larger number

Step-by-step explanation:

A positive and a negative is the same as subtracting

ex: 7 + (-2) = 7 -2 = 5

ex: -7 + 2 = 2-7 = -5

Answer:

-5 + 6=1

but

-6+5=. -1

Step-by-step explanation:

it depends , if the negative number is lesser than the positive then the answer will be in the positive, but if the negative number is greater than the positive it is a negative

Answer:

a,d,e

Step-by-step explanation:

In this question, we apply limit concepts to get the desired limit, finding that the correct options are: A, D and E, leading to the result of the limit being [tex]\frac{1}{6}[/tex].

Limit:

The limit given is:

[tex]\lim_{x \rightarrow 7} \frac{\sqrt{x+2}-3}{x-7}[/tex]

If we apply the usual thing, of just replacing x by 7, the denominator will be 0, so this is not possible.

When we have a term with roots, we rationalize it, multiplying both the denominator and the denominator by the conjugate.

Multiplication by the conjugate:

The term with the root is:

[tex]\sqrt{x+2} - 3[/tex]

It's conjugate is:

[tex]\sqrt{x+2}+3[/tex]

Multiplying numerator and denominator by the conjugate, meaning option A is correct:

[tex]\lim_{x \rightarrow 7} \frac{\sqrt{x+2}-3}{x-7} \times \frac{\sqrt{x+2}+3}{\sqrt{x+2}+3}[/tex]

We do this because at the numerator we can apply:

[tex](a+b)(a-b) = a^2 - b^2[/tex]

Thus

[tex]\lim_{x \rightarrow 7} \frac{\sqrt{x+2}-3}{x-7} \times \frac{\sqrt{x+2}+3}{\sqrt{x+2}+3} = \lim_{x \rightarrow 7} \frac{(\sqrt{x+2})^2 - 3^2}{(x-7)(\sqrt{x+2}+3)} = \lim_{x \rightarrow 7}\frac{x+2-9}{(x-7)(\sqrt{x+2}+3)} = \lim_{x \rightarrow 7}\frac{x-7}{(x-7)(\sqrt{x+2}+3)}[/tex]

Thus, we can simplify the factors of x - 7, meaning that option D is correct, and we get:

[tex]\lim_{x \rightarrow 7} \frac{1}{\sqrt{x+2}+3}[/tex]

Now, we just calculate the limit:

[tex]\lim_{x \rightarrow 7} \frac{1}{\sqrt{x+2}+3} = \frac{1}{\sqrt{7+2}+3} = \frac{1}{3+3} = \frac{1}{6}[/tex]

Thus, option E is also correct.

Using a limit calculator, as given by the image below, we have that 1/6 is the correct answer.

For more on limits, you can check https://brainly.com/question/12207599

Answer:

Between the deductible and the two x-rays, the customer will have to pay $648 in total for the two x-rays.

Step-by-step explanation:

Given that, with a certain medical insurance policy, the customer must first pay an annual $ 150 deductible, and then the policy covers 70% of the cost of x-rays, and the first x-ray cost $ 680, and the second x-ray cost $ 980, to determine how much in total you will need to pay for these x-rays, the following calculation must be performed:

150 + (0.3 x 680) + (0.3 x 980) = X

150 + 204 + 294 = X

648 = X

Thus, between the deductible and the two x-rays, the customer will have to pay $ 648 in total for the two x-rays.

Answer:

5/6

Step-by-step explanation:

Answer:

The answer is 5/6

Step-by-step explanation:

4        5           20             2

-   x   -       =      -      =       -

5       6            30             3

Answer:

The answer is D i.e an=34-4n

Answer:

an=34−4n

Step-by-step explanation:

Answer:

the median is 43

Step-by-step explanation:

Answer:

A) 3, 4, and 5

D) 9, 12, and 15

Step-by-step explanation:

A) 3, 4, and 5

D) 9, 12, and 15

If you square and add the first two, you get the third one squared.  That doesn’t work for B and C.

Answer:

100 and 80

Step-by-step explanation:

Congruent means the same, so the other 2 angles are the same as 80 and 100

Answer:

B) 544in

Step-by-step explanation:

The area for the front triangle is 48in. So the back triangle is also 48in.

The area for the side rectangles are each 140in.

And the area for the bottom rectangle is 168in.

Add all the values together: 48+48+140+140+168=544

Hope this makes sense...?

Answer:

A

Step-by-step explanation:

y -2 = -5/6(x -3)

y-2 = -5/6x + 15/6

y = -5/6x + 27/6

y = -5/6x + 9/2

Answer:

11,401 I think!!! if not please say

Answer:

Finding the Volume of a rectangular prism is to find there

C) 135

Step-by-step explanation:

L x W = A x H = V

9 x 5 = 45 x 3 = 135

Answer:

None

Step-by-step explanation:

V=1/3×a×b×h

=1/3×9×3×5

=45

Answer:

Distance between points = 8.6

Step-by-step explanation:

Formula :

Distance between two points = √(xB−xA)2+(yB−yA)2(xB-xA)2+(yB-yA)2

Solution :

Distance between two points = √(−2−−9)2+(−6−−1)2(-2--9)2+(-6--1)2

= √72+(−5)272+(-5)2

= √49+2549+25

= √7474 = 8.6023

Distance between points (-9, -1) and (-2, -6) is 8.6023

Answer:

A,M,V

Step-by-step explanation:

Answer:

try c

Step-by-step explanation:

i dont know

Answer:

1) 49 degrees

2) It is a trapezoid

Step-by-step explanation:

1) the angles of a quadrilateral are 360 degrees, 78 + 102 + 132 + ? = 360

312 + ? = 360

? = 48

Answer:

D is the best answer to the question

Answer:

Shopping malls are replacing small shops

Answer: (x2 - x - 1) • (2x + 1)

Step-by-step explanation:

((2x3 - x2) - 3x) - 1

STEP

2

:

Checking for a perfect cube

2.1 2x3-x2-3x-1 is not a perfect cube

Trying to factor by pulling out :

2.2 Factoring: 2x3-x2-3x-1

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1: -3x-1

Group 2: 2x3-x2

Pull out from each group separately :

Group 1: (3x+1) • (-1)

Group 2: (2x-1) • (x2)

Bad news !! Factoring by pulling out fails :

The groups have no common factor and can not be added up to form a multiplication.

Polynomial Roots Calculator :

2.3 Find roots (zeroes) of : F(x) = 2x3-x2-3x-1

Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient

In this case, the Leading Coefficient is 2 and the Trailing Constant is -1.

The factor(s) are:

of the Leading Coefficient : 1,2

of the Trailing Constant : 1

Let us test ....

P Q P/Q F(P/Q) Divisor

-1 1 -1.00 -1.00

-1 2 -0.50 0.00 2x+1

1 1 1.00 -3.00

1 2 0.50 -2.50

The Factor Theorem states that if P/Q is root of a polynomial then this polynomial can be divided by q*x-p Note that q and p originate from P/Q reduced to its lowest terms

In our case this means that

2x3-x2-3x-1

can be divided with 2x+1

Polynomial Long Division :

2.4 Polynomial Long Division

Dividing : 2x3-x2-3x-1

("Dividend")

By : 2x+1 ("Divisor")

dividend 2x3 - x2 - 3x - 1

- divisor * x2 2x3 + x2

remainder - 2x2 - 3x - 1

- divisor * -x1 - 2x2 - x

remainder - 2x - 1

- divisor * -x0 - 2x - 1

remainder 0

Quotient : x2-x-1 Remainder: 0

Trying to factor by splitting the middle term

2.5 Factoring x2-x-1

The first term is, x2 its coefficient is 1 .

The middle term is, -x its coefficient is -1 .

The last term, "the constant", is -1

Step-1 : Multiply the coefficient of the first term by the constant 1 • -1 = -1

Step-2 : Find two factors of -1 whose sum equals the coefficient of the middle term, which is -1 .

-1 + 1 = 0

Observation : No two such factors can be found !!

Conclusion : Trinomial can not be factored

Final result :

(x2 - x - 1) • (2x + 1)

Answer:

A, C, D

Step-by-step explanation:

Answer:

There is a 1-a ​chance, where a is the complement of the confidence​ level, that the true value of p will fall in the confidence interval produced from our sample.  ( B )

Step-by-step explanation:

Confidence level depicts the probability that the confidence interval actually contains the values of p ( true values of P ) hence

There is a 1-a ​chance, where a is the complement of the confidence​ level, that the true value of p will fall in the confidence interval produced from our sample Is a complete misinterpretation of the confidence interval therefore it is NOT true

Answer:

Benson could use a deck of cards.

Diamonds for the first dog.

Clubs for the second dog.

Hearts for the third dog.

Spades for the fourth dog.

Answer:

The answer would be D

Step-by-step explanation:

X = 3.9 *10^7 - 1.3 * 10^6

X= 3.7 * 10^7

Answer:

A = 66.7 in²

Step-by-step explanation:

The shaded sections of the trapezoid are right triangles.

Therefore the area of the shaded sections = the area of the two triangles

Area of a triangle = ½*bh

✔️Area of the first triangle with the following dimensions:

b = 8 in

h = 9.2 in

Area = ½*8*9.2 = 4*9.2 = 36.8 in²

✔️Area of the second triangle with the following dimensions:

b = 6.5 in

h = 9.2 in

Area = ½*6.5*9.2

= 29.9 in²

✔️Area of the shaded sections = 36.8 + 29.9 = 66.7 in²