# ∠A and ∠B are complementary angles of right triangle ABC, cos A = 0.83, and cos B = 0.55. What is sin A + sin B? A) 0.28 B) 1 C) 0.38 D) 1.38

QUESTION POSTED AT 18/01/2020 - 06:07 AM

QUESTION POSTED AT 18/01/2020 - 06:07 AM

**Answer:**

1.38

**Step-by-step explanation:**

The answer would be B simply because it sounds more reasonable.

ANSWERED AT 19/02/2020 - 04:59 PM

QUESTION POSTED AT 19/02/2020 - 04:59 PM

C, it's always c, when in doubt, pick c

ANSWERED AT 19/02/2020 - 04:28 PM

QUESTION POSTED AT 19/02/2020 - 04:28 PM

He has to make a 95.

77*5=385

80*6(tests)=480

480-385=95

77*5=385

80*6(tests)=480

480-385=95

ANSWERED AT 19/02/2020 - 03:56 PM

QUESTION POSTED AT 19/02/2020 - 03:56 PM

**Answer:**

**Option C is correct.**

The kind of growth model is shown in the table is exponential

**Step-by-step explanation:**

**Exponential growth function **is in the form of : ......[1]; where a is the initial value and b> 0.

**Consider any two point from the table:**

(1 , 5) and ( 2 , 25)

Substitute these in the equation [1] we get;

......[2]

......[3]

**Divide equation [3] by [2] we have;**

Simplify:

Now substitute this value in equation [2] we get;

Divide both sides by 5 we get;

Simplify:

1=a or a = 1

**Therefore, the table shown the exponential growth function is, **

ANSWERED AT 19/02/2020 - 03:44 PM

QUESTION POSTED AT 19/02/2020 - 03:44 PM

I believe it's the associative

ANSWERED AT 19/02/2020 - 03:19 PM

QUESTION POSTED AT 19/02/2020 - 03:19 PM

The answer is D !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

ANSWERED AT 19/02/2020 - 01:34 PM

QUESTION POSTED AT 19/02/2020 - 01:34 PM

we know that

if two lines are perpendicular

then the product of their slopes is equal to minus one

so

in this problem we have

the value of m2 must be equal to

we know that

The formula to calculate the slope between two points is equal to

__Find the slopes of each of ordered pairs and compare with m2__

__case a) __

Substitute in the formula

The slope is equal to m2

so

The ordered pair case a) could be points on a line that is perpendicular to the given line

__case b) __

Substitute in the formula

The slope is not equal to m2

so

The ordered pair case b) could not be points on a line that is perpendicular to the given line

__case c) __

Substitute in the formula

The slope is not equal to m2

so

The ordered pair case c) could not be points on a line that is perpendicular to the given line

__case d) __

Substitute in the formula

The slope is not equal to m2

so

The ordered pair case d) could not be points on a line that is perpendicular to the given line

__case e) __

Substitute in the formula

The slope is equal to m2

so

The ordered pair case e) could be points on a line that is perpendicular to the given line

therefore

__the answer is__

ANSWERED AT 19/02/2020 - 01:33 PM

QUESTION POSTED AT 19/02/2020 - 01:33 PM

Then it would be 52inches or 160 inches depends of your looking for area or perimeter

ANSWERED AT 19/02/2020 - 12:49 PM

QUESTION POSTED AT 19/02/2020 - 12:49 PM

1-b

2-c

good luck .......

2-c

good luck .......

ANSWERED AT 19/02/2020 - 12:22 PM

QUESTION POSTED AT 19/02/2020 - 12:22 PM

There exists the same question with the figure as shown in the attachment.

The given are:

g = 40 degrees

k = 45 degrees

Ask:

angle of " l "

So this is how to solve this:

Step 1:

Since CEF is an equilateral triangle, then each has 60 degrees.

i is equal to l because they are opposite angles

Step 2:

angle l is inside CEF, then the value of angle l is 60

The given are:

g = 40 degrees

k = 45 degrees

Ask:

angle of " l "

So this is how to solve this:

Step 1:

Since CEF is an equilateral triangle, then each has 60 degrees.

i is equal to l because they are opposite angles

Step 2:

angle l is inside CEF, then the value of angle l is 60

ANSWERED AT 19/02/2020 - 12:21 PM

QUESTION POSTED AT 19/02/2020 - 12:21 PM

-- State-A . . . Population = 1 · (1.08)ˣ

-- State-B . . . Population = 2 · (1.08)ˣ

' x ' = number of years after the original population

At the beginning, x=0.

Any quantity raised to the zero power = 1.

At the beginning, when x=0, the original populations were

State-A = 1 · 1 = 1

State-B = 2 · 1 = 2

The original population of State A**was half** of

the original population of State B.

-- State-B . . . Population = 2 · (1.08)ˣ

' x ' = number of years after the original population

At the beginning, x=0.

Any quantity raised to the zero power = 1.

At the beginning, when x=0, the original populations were

State-A = 1 · 1 = 1

State-B = 2 · 1 = 2

The original population of State A

the original population of State B.

ANSWERED AT 19/02/2020 - 11:53 AM

QUESTION POSTED AT 19/02/2020 - 11:53 AM

B. Calculate the value of MN

ANSWERED AT 19/02/2020 - 11:52 AM

QUESTION POSTED AT 19/02/2020 - 11:52 AM

Sqrt(42)= 6.487406984078602

confirm this answer on your calculator

confirm this answer on your calculator

ANSWERED AT 19/02/2020 - 11:03 AM

QUESTION POSTED AT 19/02/2020 - 11:03 AM

C would be the answer

ANSWERED AT 19/02/2020 - 10:42 AM

QUESTION POSTED AT 19/02/2020 - 10:42 AM

I hope this helps you

(f.g) (x)=(-2x+7)(-6x+3 )

(f.g)(x)=12x^2-6x-42x+21

(f.g)(x)=12x^2-48x+21

A

(f.g) (x)=(-2x+7)(-6x+3 )

(f.g)(x)=12x^2-6x-42x+21

(f.g)(x)=12x^2-48x+21

A

ANSWERED AT 19/02/2020 - 10:19 AM

QUESTION POSTED AT 19/02/2020 - 10:19 AM

5 miles per second. The speed increased from 10-70 so 60 mps but it happened in 12 seconds so, you would divide 60 by 12 to get 5.

ANSWERED AT 19/02/2020 - 10:08 AM

QUESTION POSTED AT 19/02/2020 - 10:08 AM

It is given that P(A) = 1/2 and P(B) = 0

P(A Î B) = P (A ∩ B) / P(B) = P (A ∩ B)/0

As zero is in the denominator, the expression can't be defined.

**In short, final answer is not defined.**

Hope it helped.

P(A Î B) = P (A ∩ B) / P(B) = P (A ∩ B)/0

As zero is in the denominator, the expression can't be defined.

Hope it helped.

ANSWERED AT 19/02/2020 - 09:40 AM

QUESTION POSTED AT 19/02/2020 - 09:40 AM

**Answer:**

i believe its D!

**Step-by-step explanation:**

ANSWERED AT 19/02/2020 - 01:14 AM

QUESTION POSTED AT 19/02/2020 - 01:14 AM

SAS stands for "side, angle, side" and means that we have two triangles where we know two sides and the included angle are equal. If two sides and the included angle of one triangle are equal to the corresponding sides and angle of another triangle, the triangles are congruent.

In the given triangles RQS and NTV ,RQ ≅ NT and <∠Q ≅ ∠T .We need one more side to be equal to prove the triangles to be congruent.

Among all the options option c. No, it is necessary to know that another set of corresponding sides is congruent is the right answer.

ANSWERED AT 19/02/2020 - 01:06 AM

QUESTION POSTED AT 19/02/2020 - 01:06 AM

The sum of the interior angles of an n-sided polygon can be calculated using formula

It is easy to verify:

1. If n=3 (the smallest possible number of sides for polygon), then the polygon is triangle and the sum of the measures of interior angles of triangle is always 180° .

2. If n>3, draw (n-3) diagonals from one vertex. This diagonals partition the polygon into (n-2) triangles. Thus, the sum of the interior angles of an n-sided polygon is equal to the sum of the measures of interior angles of (n-2) triangles that is

**Answer: **correct choice is B

ANSWERED AT 19/02/2020 - 01:06 AM

QUESTION POSTED AT 19/02/2020 - 01:06 AM

The answer is A.

tbch i plugged them into a graphing calculator... ,:D too tired atm

tbch i plugged them into a graphing calculator... ,:D too tired atm

ANSWERED AT 19/02/2020 - 01:00 AM

QUESTION POSTED AT 19/02/2020 - 01:00 AM

**Answer: Option 'C' is correct.**

**Step-by-step explanation:**

Since we have given that

Value of gift card Joylin receives = $50

Let the amount she spends on snacks be x

Let the amount she spends on movie tickets be x+6

**So, according to question, we get**

So, Amount she spent on movie will be

**Hence, Option 'C' is correct.**

ANSWERED AT 19/02/2020 - 01:00 AM

QUESTION POSTED AT 19/02/2020 - 01:00 AM

**Answer:**

**a) (i) 1553 ants**

**(ii) 4823 ants**

**b) 12 weeks **

**Step-by-step explanation:**

Given,

The initial number of ants, P = 500,

Also, the rate of increasing per week, r = 12% = 0.12,

So, the number of ants after x weeks,

**a) **(i) If x = 10 weeks,

The number of ants would be,

**(ii) **If x = 20 weeks,

The number of ants would be,

**b)** If A = 2000

Taking log both sides,

log(4) = xlog(1.12)

⇒** x **= 12.23 ≈ **12 weeks**

ANSWERED AT 19/02/2020 - 12:58 AM

QUESTION POSTED AT 19/02/2020 - 12:58 AM

**Answer:**

**Rotation about 90° counter clockwise (x , y) →→ ( -y, x ). **

**Step-by-step explanation:**

Given : Triangle XYZ has vertices X(1, 3), Y(0, 0), and Z(–1, 2). The image of triangle XYZ after a rotation has vertices X'(–3, 1), Y'(0, 0), and Z'(–2, –1).

To find : Which rule describes the transformation.

Solution : We have given

vertices X(1, 3) →→ X'(–3, 1)

Y(0, 0) →→ Y'(0, 0),

Z(–1, 2) →→ Z'(–2, –1).

**Here , we can see in each coordinates value of y become -x and x become y.**

(x , y) →→ ( -y, x ) this the rule of rotation about 90° counter clockwise.

**Therefore, rotation about 90° counter clockwise (x , y) →→ ( -y, x ). **

ANSWERED AT 19/02/2020 - 12:56 AM

QUESTION POSTED AT 19/02/2020 - 12:56 AM

15/12 simplified would be A) 3:4

ANSWERED AT 19/02/2020 - 12:55 AM

QUESTION POSTED AT 19/02/2020 - 12:55 AM

The answer is C I think

ANSWERED AT 19/02/2020 - 12:53 AM

QUESTION POSTED AT 19/02/2020 - 12:53 AM

**Answer**

**The rule of rotation about the origin in counter-clockwise is given by:**

**The rule of rotation of about the origin in clockwise is given by:**

Given the coordinates of triangle RST :

R(1, 1)

S(-2, -4)

T(-3, -3)

**We have to find the coordinates of S'**

Apply the rule of rotation 270 degree counterclockwise on RST:

To find the S'

**Apply the rule of rotation 270 degree clockwise** **we have;**

**Therefore, the coordinates of S' counterclockwise is: (-4, 2) and clockwise is: (4, -2)**

ANSWERED AT 19/02/2020 - 12:49 AM

QUESTION POSTED AT 19/02/2020 - 12:49 AM

Isosceles Triangle has 2 equals sides

ANSWERED AT 19/02/2020 - 12:42 AM

QUESTION POSTED AT 19/02/2020 - 12:42 AM

I hope this helps you

if 6 tickets $20

1 tickets $ ?

?.6=1.20

?=20/6

?=3.3

if 6 tickets $20

1 tickets $ ?

?.6=1.20

?=20/6

?=3.3

ANSWERED AT 19/02/2020 - 12:39 AM

QUESTION POSTED AT 19/02/2020 - 12:39 AM

ANSWERED AT 19/02/2020 - 12:37 AM

QUESTION POSTED AT 19/02/2020 - 12:37 AM