Pls help me i rlly need help im bad at math

Answer:

Step-by-step explanation:

Given the value 141700000, we are to express in scientific notation

The standard form is expressed as A * 10^n

A is any integer between 1 and 10

n is also any integer

141700000.= 1.47 * 10^8

Note that the decimal point was shifted back 8 times, main reason the power is 8

The measure of <B and <D are 110 degrees and 70 degrees

The sum of the opposite angle of the quadrilateral within the circle is 360 degrees.

Given the following parameters

<B = 3x - 4

<D = 2x - 6

Equate both equations

<B + <D = 180

3x - 4 + 2x - 6 = 180

5x - 10 = 180

5x = 190

x = 190/5

x = 38

Determine the measure of <B and <D

<B = 3x - 4 = 3(38) - 4

<B = 110 degrees

<D = 2x - 6

<D = 2(38) - 6

<D = 76 - 6

<D = 70 degrees

Hence the measure of <B and <D are 110 degrees and 70 degrees

Learn more on angles here: https://brainly.com/question/25716982

Answer:

120 children and 388 adults bought tickets for the swimming pool

Explanation:

Create two simultanous equations:

Let c stand for the number of children that bought a ticket, and a stand for the number of adults that bought a ticket, you get your first equation, being

c

+

a

=

508

then, you now create a second equation for the prices of the tickets.

(price of childrens tickets)(number of children that swam)+(price of adults tickets)(number of adults that swam) = total money collected

so:

1.75

c

+

2.25

a

=

1083.00

now we still know, that

a

=

508

−

c

so we can substitute it into the second formula

1.75

c

+

2.25

(

508

−

c

)

=

1083

now its just simple algebra

1.75

c

+

1143

−

2.25

c

=

1083

60

=

0.5

c

so:

c

=

120

now we know, that 120 children went to the swimming pool.

and we still have the formula from before:

a

=

508

−

c

so

a

=

388

Answer:

Surface area= 230.625 (Add 28.125 if u need the top too)

Step-by-step explanation:

3.75x7.5= 28.125x2=56.25

3.75x9= 33.75x2=67.5

7.5x9=67.5x2=135

Answer:

A . 496 ft²

Step-by-step explanation:

Area = ½ × base × height

= ½ × 62 × 16

=496 ft²

Answer:

I know for a fact I saw this query in class before the teacher said I was correct the answer is B have a nice day (:

Answer:

V=343in³

Step-by-step explanation:

A=6a2

V=a

3V=6A3/2

36=6·2943/2

36=343in³

Answer:

8 × 10 ^-6

Step-by-step explanation:

Answer:

the answer is C. 8 x 10^-5

Step-by-step explanation:

the reason is bc there are 5 zero's after the decimal

Answer:

it is a cord

it is diameter of the circle

it is 7cm long

Step-by-step explanation:

Hope it helps you in your learning process.

9514 1404 393

Answer:

  C.  The zeros are -1 and 5/2, because f(x) = (x + 1)(2x-5).

Step-by-step explanation:

The zeros of the function are the values that make the factors zero. The factors need to multiply out to give the original standard-form equation.

The sign of the constant (-5) tells you the product of the constants in the factors must be -5. That is only true for choices B and C.

Additionally, the x-term needs to match the result of multiplying out the factors.

  B.  (x -1)(2x +5) = 2x^2 +3x -5 . . . . . . . . . wrong x-term (not -3x)

  C.  (x +1)(2x -5) = 2x^2 -3x -5 . . . . . . . . . matches the given f(x)

The factors of C are zero when x=-1, x=5/2.

1- -8

2-  -10x + 16

_____________

Hope this helps!

-Lexi

Hey there!

One thing we can do to get an equivalent expression is to divide both sides by 3. That would get us [tex]\frac{-81x+27}{3}[/tex]. If we simplify this, we get [tex]-27x+9[/tex].

Another thing we can do is divide both sides by 27, because it is divisible by 27. That would get us [tex]\frac{-81x+27}{21}[/tex]. If we simplify this, we get [tex]-3x+1[/tex].

One last thing we can do is multiply it by 1, and add zero, because that does not change it at all. That would give us [tex]1(-81x+27)+0[/tex].

Have a terrificly amazing day! :D

Answer:E

Step-by-step explanation:

Answer:

[tex]x=-15.5[/tex]

Step-by-step explanation:

Write down what the problem is saying;

[tex]6(x+9)=2(x-4)[/tex]

Distribute;

[tex]6(x+9)=2(x-4)\\\\(6)(x)+(9)(6)=(2)(x)+(2)(-4)\\[/tex]

Simplify,

[tex]6x + 54 = 2x - 8[/tex]

Inverse operations,

[tex]6x + 54 = 2x - 8\\-2x\\\\4x + 54 = -8\\-54\\\\4x = - 62\\/4\\\\x =-15.5[/tex]

Answer:

15

Step-by-step explanation:

Answer:

(n+3) × n =40

n^2 + 3n =40

n^2 + 3n - 40=0

(n+8)(n-5)=0

n=-8 or n=5

Answer:

hdhdheeheiwhwvehdhevevwhw

25

Answer: 20

i just got it from the calculator

Answer: 7.5

Step-by-step explanation:

The formula for the area of a triangle is height times base (or width) divided by 2. It is written as:

BxH/2

So when you put your numbers in the calculator you get this:

3×5/2=7.5

Hope this helps :)

Answer: If your asking what c is its 9

Step-by-step explanation: How I did it was I did 72/8, which is 9. How I checked was I did 8*9 and I got 72

C is 9 if you multiply 8 and c to get 72.

Answer:

62

Step-by-step explanation:

60 + 58 + y = 180

118 + y = 180

y = 180 - 118

y = 62

$5.83-$5.50

=$0.33 tax rate charged

Answer:

6%

Step-by-step explanation:

5.83 - 5.50 = .33 sales tax

Sales price x sales tax rate - sales tax

5.50 x sales tax rate = .33

sales tax rate = .33/5.50

sales tax rate = .06 or 6%

9514 1404 393

Explanation:

A linear system of two equations in two variables will be a dependent system. This means both equations reduce to the same equation. The equations will be different only until they are reduced to the same form.

Here is one possible set of equations. The first is in slope-intercept form. The second is in point-slope form.

If we subtract the first equation from the second, we get ...

  (y -7) -(y) = (3(x -2)) -(3x +1)

  -7 = 3x -6 -3x -1 . . . . . eliminates y

  -7 = -7 . . . . . . . . . true for all values of x

There are an infinite number of solutions.

Answer:

False

Step-by-step explanation:

SO SO SO SO SO SO SO sry if this is wrong!!!! i'm 99.9 persecnt sure its right!!!!  :):)::)

Answer:

0.00243902439

Step-by-step explanation:

calculator