Suppose a triangle has two sides of length 42 and 35, and that the angle
between these two sides is 120°. Which equation should you solve to find the
length of the third side of the triangle?

Answers

Answer 1

Answer:

you should use cosine law

it state that the third side lets name it c

c^2=a^2+b^2 -2 × a × b × cos (angle between the 2 sides)

a and b are the 2 sides given


Related Questions

Explain how you would add –3 + 4

Answers

Answer:

that would be 1

Step-by-step explanation:

if it was just 3 + 4 then it would be 7

but since it is -3  + 4

then it is just like subtracting 3 - 4 and that would be 1

please mark brainliest

Joyce is helping to make wreaths for her Women’s Club to sell at a local bazaar. She will be making the bows for each wreath. She has 61 feet of ribbon to start. She needs 1.5 feet of ribbon for each bow. Let x represent the number of bows made. Write an equation and solve for how many bows Joyce can make to end up with 10 feet of ribbon left.

Answers

Answer:

She can make 34 bows with 10 feet of ribbon left

Step-by-step explanation:

1.5x34=51

61-51=10 feet of ribbons left

51/1.5=x

The drama group has 909090 minutes to practice two scenes. They want to practice the pirate scene 444 times, and each time takes 131313 minutes. The mermaid scene takes 777 minutes. How many full times can the group practice the mermaid scene? times

Answers

Answer: 5.43 minutes

Step-by-step explanation:

Number of minutes for the drama group = 90 minutes

Number of times to practice the pirate scene = 4

Time taken to practice the pirate scene = 13

The number of minutes used for pirate scene will be:

= 4 × 13 = 52 minutes

The number of full times that the group can practice the mermaid scene will then be:

= (90 - 52) / 7

= 38 / 7

= 5.43 minutes

Mel makes arm bracelets. She is making one for each arm of her six friends. How many should she make?

Answers

Answer:

12

Step-by-step explanation:

Each friend has 2 arms, right? So 6 friends with 2 arms would be 6 x 2. 6 x 2 = 12

each arm. well ever person had two arms. so one for each arm. so 1 x 2 x 6 would be 12. so 12 bracelet

How many solutions does the equation 3x − 7 = 4 + 6 + 4x have?

Two
None
Infinitely many
One

Answers

one answer because when you simplify the equation you are left with x= -17

Answer:

one

Step-by-step explanation:

Help plzzzz plzzz plzzzzz plzzzzzzzz

Answers

Answer:

1 + X

Step-by-step explanation:

You just write whats there

Answer: I think it might be 1 + x or x = 1

Step-by-step explanation:

Does (3,6) make the equation y = 2x true? ves​

Answers

Answer:

Yes.

Step-by-step explanation:

In order to check if an equation is true, plug in the corresponding values for x and y.

Coordinates are written as (x, y). So, x = 3 and y = 6.

Plug in these values to the equation.

6 = 2 * 3

Multiply 2 and 3 to simplify:

6 = 6

This shows that the equation is true when given (3, 6)

What does a positive exponent show?

Answers

repeated multiplication by the base

I NEED HELP!!!!!!! due in 10 min PLZZZZZ!!!!

Answers

Answer:

-3, 6, 7

Step-by-step explanation:

hajskwnwhsjskakwnwhskskwk

The triangles are similar. Find
the missing side length x.

Answers

Answer:

x = 66

Step-by-step explanation:

The similarity ratio is DO/PA = 27/18 ➡3/2

So DT/PN ➡ x/44 = 3/2

132 = 2x divide both sides by 2

x = 66

Please Help!!!!! I will give brainliest!!!

Answers

Answer:

d.2x=16;X=8

Step-by-step explanation:

2*8=16

ok

What is the vertex of the quadratic function f(x)=x2+6x+16? Write your answer
as an ordered pair, (x,y).

Answers

Answer:

The vertex of the quadratic function is:

[tex](x_{v}, y_{v})=\left(-3,\:7\right)[/tex]

Step-by-step explanation:

Given the function

[tex]f\left(x\right)=x^2+6x+16[/tex]

As the vertex of the form [tex]y=ax^2+bx+c[/tex] is defined as:

[tex]x_v=-\frac{b}{2a}[/tex]

As the quadratic function of parabola params are

[tex]a=1,\:b=6,\:c=16[/tex]

so

[tex]x_v=-\frac{b}{2a}[/tex]

[tex]x_v=-\frac{6}{2\cdot \:1}[/tex]

[tex]x_v=-3[/tex]

Putting [tex]x_v=-3[/tex] to determine [tex]y_v[/tex]

[tex]y_v=\left(-3\right)^2+6\left(-3\right)+16[/tex]

[tex]y_v=3^2-18+16[/tex]

[tex]y_v=9-2[/tex]

[tex]y_v=7[/tex]

Therefore, the vertex of the quadratic function is:

[tex](x_{v}, y_{v})=\left(-3,\:7\right)[/tex]

10) Alayah's puppy weighed 12 lbs. when they brought it home from the Humane Society.
Over the past 6 months, the puppy gained the same amount of weight each month and
now weighs 36 lbs. How much weight was gained each month?
Answer Statement:

Answers

it gained 4 lbs:) 6*4 = 24
24+12 = 36

The point A (−5,4) is reflected over the point (−2,5) and its image is point B. What are the coordinates of point B?

Answers

Answer:

The coordinates of B are (1,6)

Step-by-step explanation:

Point Reflection

Given the point P(x,y) and its reflection P'(x',y') with respect to the point C(xc,yc), C is the midpoint of the segment PP'.

This means the coordinates of C are:

[tex]\displaystyle x_c=\frac{x+x'}{2}[/tex]

[tex]\displaystyle y_c=\frac{y+y'}{2}[/tex]

If the coordinates of the midpoint are given, then the endpoint P' can be found solving for x' and y':

[tex]x'=2x_c-x[/tex]

[tex]y'=2y_c-y[/tex]

The point P' is the reflection of P over C.

We are given the coordinates of A(-5,4) and the point (-2,5). We need to find the coordinates of point B(x',y'). Let's use the formulas as if A was point P and C=(-2,5):

[tex]x'=2(-2)-(-5)=-4+5=1[/tex]

[tex]y'=2(5)-4=10-4=6[/tex]

The coordinates of B are (1,6)

b2-b - 12 = 0
What is the answer

Answers

Answer:

b = 4 or -3

Step-by-step explanation:

You mean this?;

b² - b - 12 = 0

Using quadratic formula (attached):

b = (1 ± (1 + 48)^1/2) ÷ 2 = (1 ± 7) ÷ 2 = 4 or -3

Luke's turkey chili recipe calls for 2.5 pounds of ground turkey for every 5 servings. How many servings can he make if he has 6 pounds of ground turkey? Complete the explanation. When entering the equation, use y to represent how many servings he can make and x to represent how many pounds of ground turkey he has.

Answers

Answer:

12 servings

Step-by-step explanation:

Luke's turkey chili recipe calls for 2.5 pounds of ground turkey for every 5 servings. How many servings can he make if he has 6 pounds of ground turkey?

From above question:

2.5 pounds of ground turkey = 5 servings

6 pounds of ground turkey = x

Cross Multiply

2.5 × x = 6 × 5

x = 6 × 5/2.5

x = 12 servings

Hence, 6 pounds of ground turkey can make 12 servings.

Completing the explanation.

The equation is

5x = 2.5y

where:

x = represent how many pounds of ground turkey he has = 6 pounds

y = to represent how many servings he can make

Hence,

5 × 6 = 2.5y

y = 5 × 6/2.5

y = 12 servings

Larry says 5×900 is less than 5×9000 is greater than 9000​

Answers

Answer:

???? i dont understand

Step-by-step explanation:

i think yes

Answer:

???

Step-by-step explanation:

can someone explain how you divide 32 by 15 times 45 and add 65 so

32÷15x45+65=?

20 points and brainliest

Answers

Answer:

32/675x+65

Step-by-step explanation:

well set it up as 35 dividing all the other numbers. Then multiply 15 and 46 to get 675x+65

    1)    32                            2)     45 x 2^5              3)

          -----   x  45  +  65                ---------                        3^2-1  x  2^5+65

          15                                         3 x 5

     4)                                5)                        

           96+65                            161

what is -5/7 as a decimal​

Answers

Answer:

-0.7143

Step-by-step explanation:

Answer: It is - .7142857143

Or - .71 if rounded

The second new path will increase access to the gazebo. It will be perpendicular to the the existing path and pass through g (7,2). Which equation represents which this new this path on the map

A.y=-4x+30

B.y=-1/4x+15/4

C.y=1/4x+1/4

D.y=4x-26

Answers

Answer:

C. y = 1/4x + 1/4

Step-by-step explanation:

Just did it on Edmentum and got it right

Answer:

C. y=1/4x+1/4

Step-by-step explanation:

Like the first path, this path will have a slope that is the opposite reciprocal of -4, the slope of the path passing through F(4,14) and G(7,2).

Substitute 1/4  and the coordinates of point G into slope-intercept form, and solve for b

Then, substitute 1/4 for m and 1/4  for b to find the equation of the line that’s perpendicular to the original path and passes through G(7,2)

What is an equation in point slope form of the line that passes through the point (6,-2) and had a slope of 3

Answers

Answer:

y - 6 = 3(x + 2)

Step-by-step explanation:

Point-slope form: y - y1 = m(x - x1)

Given: m(slope) = 3, (6, -2)

(x1, y1) = (6, -2)

Input the given values of the slope and the point into the equation for point-slope form:

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

y + 2 = 3(x - 6)

The equation written in point-slope form is: y + 2 = 3(x - 6)

what’s an algebraic expression for 25 less than a number

Answers

Answer:

Step-by-step explanation:

Let the no. be x

25 less than a no. = 25 - x

Hope this helps

plz mark as brainliest!!!!!!

The algebraic expression for 25 less than a number is;y=25-x

What is an algebraic expression?

An algebraic expression  is a set of terms that have been combined using operations like addition, subtraction, multiplication, and division.

The algebraic expression for 25 less than a number is;

y=25-x

All the obtained value of y is less than 25.

Hence,the algebraic expression for 25 less than a number is;y=25-x.

To learn more about the algebraic expression, refer:

https://brainly.com/question/953809

#SPJ2

PLEAAASE HELP! i will manifest good things for you. i will mark u brainliest LOL

Answers

Answer:

(c) is m=1 i am working on the other ones

Consider the words typically associated with geometry.
Are there any words that would be hard to precisely
define? What words can you think of?

Answers

Answer:

Point, line and plane

Step-by-step explanation:

Words are defined using other defined words or terms. However, these three terms are very difficult to find other words to describe. Without using other terms, we create circular definitions; thus these are called the "undefined terms" of geometry.

Hope this helps :)

5 ( x + 3) + 2 ( x + 7)

Answers

Answer:

7x+29

Step-by-step explanation:

First take away ( ), so it would be 5x+15+2x+14. Then, just add the alike terms together. 7x+29

Pls answer all questions clearly. If u don’t know pls don’t answer it’s really important

Answers

Answer:

1) no

2) no

3) yes

4 no

5) 1.5 is the constant of proportionality, $1.50 per

profet per shirt sold.

6) $1.99 per apple

7) $3.96

8) 24 ounces and $1.89

9) 2.5 pages per minute for Martin, same for Gabriel

Step-by-step explanation:

I hope this helps.

What is 1/4 x (20) 1/3= ???

Answers

The answer is 5 1/12 ;5.083; 61/12
I believe it’s 5/3 but the formatting of this question is confusing

Use the graph to evaluate the function for the given input value.
A)5
B)-5
C)2
D)-2

Answers

Answer:

Step-by-step explanation:

I think its 5 correct me if im wrong sorry little bit rsusty at math since last year

Convert the equation 2y^2- 5x+12y +23 = 0into standard form.

(2y+3)^2= 5(x-1)

(y+3)^2=5/2(x-1)

(y+3)^2= 5/2(x+1)

(2y+3)^2= 5(x+1)

Answers

Answer:

(y+3)^2=5/2(x-1)

Step-by-step explanation:

collect y terms on left side and then complete the square

6(3x + 5) and 15x + □ + 3x

Answers

Answer:

d

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

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