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MrMuchimi
3 years ago
10

Lol this is from a test, help, please

Mathematics
1 answer:
Bess [88]3 years ago
7 0

Answer:

Perimeter or for a circle the circumfernce.

Step-by-step explanation:

    C  =  πd      or   C = 2π r

        =  (3.14) 7 inches

        =  21.99 inches       okay  22 inches

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WILL MARK THE BRAINIEST!!! LOTS OF POINTS!! HELP NOW
ElenaW [278]

cos (arctan (1))=

arctan (1) = 45   take it to the third quadrant = add 180  = 225

cos (225) = -1 / sqrt(2)

            never leave a sqrt in the denominator

     = -1 /sqrt(2) * sqrt(2)/sqrt(2)

   = -sqrt(2)/2


sin (arccos (1/2)

arccos (1/2) = 60    take it to the 4th quadrant   -60 degrees

sin (-60)

- sin 60

- sqrt(3)/2




3 0
3 years ago
(help pls)
Varvara68 [4.7K]

Answer:

\huge\blue{ \mid{ \underline{ \overline{ \tt  ♡ ANSWER ♡ }} \mid}}

➳ 0.

➳ 18 over 23.

7 0
3 years ago
Read 2 more answers
7 less than the product of 5 and a number
mote1985 [20]

are there multiple choice answers because i can help with those.

6 0
4 years ago
Read 2 more answers
Graph and write solution:<br><br> 2x + 1 = y<br><br> -4x + 6y = -10
PIT_PIT [208]

The graph is shown in figure below

The Solution Set is (-2,-3)

Step-by-step explanation:

We need to graph the equations and writ the solution.

For graphing we need to find the values of x and y.

For that, we need to solve the given equations:

2x + 1 = y\\-4x + 6y = -10

Let:

2x + 1 = y\,\,\,eq(1)\\-4x + 6y = -10\,\,\,eq(2)

We can solve this by using Substitution Method.

Putting value of y of eq(1) into eq(2) and finding value of x:

2x + 1 = y\,\,\,eq(1)\\-4x+6(2x+1)=-10\\-4x+12x+6=-10\\8x+6=-10\\8x=-10-6\\8x=-16\\x=-16/8\\x=-2

So, value of x = -2

Now put value of x in eq(1) to find value of y:

2x + 1 = y\\2(-2)+1=y\\-4+1=y\\y=-3

So, value of y = -3

Plotting on graph: x=-2 and y = -3

The graph is shown in figure below

The Solution Set is (-2,-3)

Keywords: graph the equations

Learn more about Graphing Equations at:

  • brainly.com/question/10541435
  • brainly.com/question/3126500
  • brainly.com/question/2334270

#learnwithBrainly

4 0
3 years ago
Calculate the factorization 16w^2+48w+36=(4w+[1])^2
stiv31 [10]

Answer:

  [1] = 6

  x = -3/2 is the root

Step-by-step explanation:

A perfect square trinomial is of the form ...

  (a + b)² = a² +2ab +b²

You have ...

  • a²=16w²   ⇒   a = 4w
  • b² = 36   ⇒   b = 6
  • 2ab = 2(4w)(6) = 48w

Then the factorization is ...

  16w² +48w +36 = (4w +6)²

This will be zero when x = -6/4 = -3/2.

3 0
3 years ago
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