MAKE SURE TO USE SURDS ANSWE ASAP

Answer:

3

Step-by-step explanation:

The expression is [tex]\sqrt{81} -(-1*-3*\sqrt{4})[/tex] Type the expression into a calculator.

Answer:

∠ D = 80°

Step-by-step explanation:

Δ BCA and Δ DCE are congruent ( SAS postulate )

Thus corresponding angles are congruent, thus

∠ D = ∠ B

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the 2 angles in Δ ABC from 180° to find ∠ B

∠ B = 180° - (30 + 70)° = 180° - 100° = 80°, then

∠ D = 80°

here: 4.2727757e+15. Please mark brainliest. Thanks.

Answer:

sin^2(a) I believe. Delete my response if needed.

Step-by-step explanation:

tan²(α) (2 cos²(α) + sin²(α) - 1)

Recall that sin²(α) + cos²(α) = 1 for all α. Then sin²(α) - 1 = -cos²(α) :

tan²(α) (2 cos²(α) - cos²(α))

tan²(α) cos²(α)

Rewrite tan(α) = sin(α) / cos(α) :

(sin(α) / cos(α))² cos²(α)

(sin²(α) / cos²(α)) cos²(α)

Cancel the factors of cos²(α) :

sin²(α)

Answer:

19*60

Step-by-step explanation:

Answer:

x = 6.8

Step-by-step explanation:

Answer:

for the green I think 7 : 15

Answer:

a) 7/15

b) 8/15

Step-by-step explanation:

a- 3 + 5 + 7 = 15 counters total, 7 green counters = 7/15

b- 3 blue + 5 red = 8 = 8/15 counters

I hope this helped, please mark Brainliest, thank you !!

Answer:

D

Step-by-step explanation:

Hope this helps. Pls give brainliest.

Answer:

I’m not sure what you need but this equation has: indefinitely many solutions because they are equivalent

Step-by-step explanation:

-5.3w+8.0w-11.6=14-25.6+2.7w

2.7w-11.6=14-25.6+2.7w

2.7w-11.6= -11.6+2.7w

m(w) = 8w + 17 looks like the best answer choice for me

Answer:

Number of quarters with Pablo = 4

Number of quarters with Laqueta = 12

Step-by-step explanation:

Given that:

Laqueta has three times as many quarters as Pablo.

They both spend $0.50.

After that Laqueta will have 5 times as many quarters as Pablo.

To find:

Number of quarters with Laqueta and Pablo now?

Solution:

Let number of quarters with Laqueta = [tex]x[/tex]

Let number of quarters with Pablo = [tex]y[/tex]

As per given statement:

[tex]x=3y ..... (1)[/tex]

In $0.50, there are 2 quarters:

After spending $0.50, number of quarters left with both of them:

Number of quarters left with Laqueta = [tex]x[/tex] - 2 =  [tex]3y-2[/tex]

Money left with Pablo = [tex]y[/tex] - 2

As per given statement:

[tex]3y-2 = 5(y-2)\\\Rightarrow 3y-2 = 5y-10\\\Rightarrow 2y = 8\\\Rightarrow y = 4[/tex]

Therefore, the answer is:

Number of quarters with Pablo = 4

Number of quarters with Laqueta = [tex]3 \times 4[/tex] = 12

Answer:

(a) An  = 2n +8

(b) F(n) = 10 + (n-1)2

(c) 38ft tall

Step-by-step explanation:

The tree is currently 10 feet long and grown 2 feet per year.

The arithmetic sequence is

10 , 12, 14 , 16 , 18 ..............

a( initial value) = 10 , d (common difference) = 2

Explicit forms

(a) An = a +(n-1)d

     An = 10 + (n-1)2

            = 10 + 2n -2

           An  = 2n +8

(b) F(n) = 10 + (n-1)2

(c) Height of the tree after 15 years

       F(15) = 10 + (15-1)2

                 = 10 + 28

                  = 38ft

So the tree will be 38ft tall after 15 years.

Answer:

C. [tex]-\frac{5}{6}[/tex]

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Edge 2020

Answer:d

Step-by-step explanation:

I got it right 100%

Answer:

You need to find out how much games he had and divide by nine.

Answer:

16[tex]\sqrt{2}[/tex]

Step-by-step explanation:

Using the rule of exponents/ radicals

[tex]a^{\frac{m}{n} }[/tex] = [tex]\sqrt[n]{a^{m} }[/tex] , then

[tex]n^{\frac{2}{3} }[/tex] = [tex]\sqrt[3]{n^2}[/tex] , then

[tex]\sqrt[3]{n^2}[/tex] = 8 ( cube both sides )

n² = 8³ ( take the square root of both sides )

n = [tex]\sqrt{8^3}[/tex]

   = [tex]\sqrt{512}[/tex]

   = [tex]\sqrt{256(2)}[/tex]

   = [tex]\sqrt{256}[/tex] × [tex]\sqrt{2}[/tex]

   = 16[tex]\sqrt{2}[/tex]

Answer:

12

General Formulas and Concepts:

Pre-Algebra

Step-by-step explanation:

Step 1: Define 1st equation

16x - 2 = 30

Step 2: Solve for x

Step 3: Solve equation

And we have our final answer!

Answer:

How to find the values ​​to put in a table of values ​​according to the problem?

Step-by-step explanation:

Answer:

Step-by-step explanation:

∠X ≅∠Z : Given

∠ZYV≅∠XYU

∠ZVY≅∠XUY Because ∠ZYV≅∠XYU, ∠X ≅∠Z.

So ∠YVW≅∠YUW

Draw VU

ΔVWU is an isosceles triange so ∠UVW≅∠VUW

So ∠YVU≅∠YUV

Therefore ΔYVU is also an isosceles triangle and YV = YU

So ΔZYV≅ΔXYU ( ASA)

So XU = ZV ( because of CPCTC)

Therefore XU + WU = ZV = VW : XW = ZV

ΔXWV ≅ΔZWU ( ASA)

Answer:

40 people

Step-by-step explanation:

One for each person

Answer:

3(2x-5)+4(x+2) =33

Step-by-step explanation:

3(2x-5)+4(x+2)

3(2(4)-5)+4(4+2)

3(8-5)+4(6)

3(3)+24

9+24

33

Hope this helps♥

Answer:

65

Step-by-step explanation:

remember a TRIANGLE always have a 180 degrees total angle,

so 45+70=115

180-115=65

Answer:

-56

Step-by-step explanation:

7 x (-7 + 15)

=7 x (-8)

=-56

hope this helped <3

Answer:

c

Step-by-step explanation:

a=8-1/x-b/x

b=8x-1-ax

Answer:

d 72

Step-by-step explanation: