I don’t get this, can you guys help out?

Answer:

-56

Step-by-step explanation:

7 x (-7 + 15)

=7 x (-8)

=-56

hope this helped <3

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

Answer:

65

Step-by-step explanation:

remember a TRIANGLE always have a 180 degrees total angle,

so 45+70=115

180-115=65

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:

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:

3

Step-by-step explanation:

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

Answer:

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

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:

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:

A. or B.

Step-by-step explanation:

I

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

Step-by-step explanation:

a=8-1/x-b/x

b=8x-1-ax

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]

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

Answer:

x = 6.8

Step-by-step explanation:

Answer:

i) 45km/hr

ii)29 min

Step-by-step explanation:

average speed = distanced travelled / time elapsed

It took 36min and need to convert to hr

36min x [tex]\frac{hours}{60 min}[/tex] = [tex]\frac{36 hr}{60 min}[/tex] = [tex]\frac{9 }{15 }[/tex] hours

distanced travelled is 27 km;

average speed = 27km / (9/15hr) = 45 km/hr

Add 36min to 0837 becomes 0913, the train will arrive at 0942 and the wait will be the difference of 0942 - 0913 = 29 min

Answer:

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

Step-by-step explanation:

Answer:

d 72

Step-by-step explanation:

Answer:

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

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Edge 2020

Answer:d

Step-by-step explanation:

I got it right 100%

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

Answer:

40 people

Step-by-step explanation:

One for each person

Answer:

D

Step-by-step explanation:

Hope this helps. Pls give brainliest.

Answer:

5. 3050ft³ (rounded to 3 s.f.)

6. 4190ft³(rounded to 3 s.f.)

7. 4600ft³(rounded to 3 s.f.)

Formulas (For easier reference):

Volume of a cone: pi×r²×[tex]\frac{h}{3}[/tex]

Volume of cylinder: pi×r²×h

Volume of a sphere: [tex]\frac{4}{3}[/tex]×pi×r³

Volume of a hemisphere: [tex]\frac{2}{3}[/tex]×pi×r³

Step-by-step explanation:

You can just apply the formulas to the question:

5. Volume of cone = pi×9²×[tex]\frac{(16-10)}{3}[/tex]

                               = 162pi

  Volume of cylinder = pi×9²×10

                                   = 810pi

Volume of figure = 162pi+810pi

                            = 972pi

                            = 3050ft³ (rounded to 3 s.f.)

6. Volume of sphere = [tex]\frac{4}{3}[/tex]×pi×10³

                                   = 1333[tex]\frac{1}{3}[/tex]pi

                                   = 4190ft³(rounded to 3 s.f.)

7. Volume of hemisphere = [tex]\frac{2}{3}[/tex]×pi×(26÷2)³

                                          = 1464[tex]\frac{2}{3}[/tex]pi

                                          = 4600ft³(rounded to 3 s.f.)