Have an amazing day :)
Will give brainlst! Pls help

Answer:

3 dogs

Step-by-step explanation:

So there is 1 dog for every 5 cats

15 divided by 5 = 3

5 is 5 cats for each 1 dog

Answer:

What I don't get the question

Step-by-step explanation:

??

Answer:

$6.00

Explanation:

If you do 20x30% then the answer will be 6 and turn it into a decimal, it will be 6.00 and add the dollar sign and you will get the answer

Answer:

4 7/15

Step-by-step explanation:

Hope this helps :)

Answer: B

Step-by-step explanation:

multiply the 1/2 of a mile by 3 (to complete the full hour)

Answer:

C

Explanation:

They are the only ones you need to click as they are the equivalent expressions.

c) q + 10+ 3v= there are 3 v's so that clears 3v out, theres

a 10 and a q

C is the only answer

Sorry if this is weird, it forced me to write lol

D. 4s3 – 41 = 4 × s × s × s – 41

I cant tell if these are exponents, if they are, then these are right too

E.6c2 – 28 = 6 × c + c – 28

Answer:

a, b, c, d

Step-by-step explanation:

i did the test

mark brainliest if helped :)

Answer:

here is a videos look it up on you tube and it might help

Step-by-step explanation:

search this

Interpreting graphs of proportional relationships

Answer:

2 5/10

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

2 cookies + 2 cookies = 4 cookies!

The more cookies the better!

Answer:

Step-by-step explanation:

Given that:

[tex]\int^2_0 \int^2_x \ sin (y^2) \ dy dx \\ \\ \text{Using backward equation; we have:} \\ \\ \int^2_0\int^2_0 sin(y^2) \ dy \ dx = \int \int_o \ sin(y^2) \ dA \\ \\ where; \\ \\ D= \Big\{ (x,y) | }0 \le x \le 2, x \le y \le 2 \Big\}[/tex]

[tex]\text{Sketching this region; the alternative description of D is:} \\ D= \Big\{ (x,y) | }0 \le y \le 2, 0 \le x \le y \Big\}[/tex]

[tex]\text{Now, above equation gives room for double integral in reverse order;}[/tex]

[tex]\int^2_0 \int^2_0 \ sin (y^2) dy dx = \int \int _o \ sin (y^2) \ dA \\ \\ = \int^2_o \int^y_o \ sin (y^2) \ dx \ dy \\ \\ = \int^2_o \Big [x sin (y^2) \Big] ^{x=y}_{x=o} \ dy \\ \\= \int^2_0 ( y -0) \ sin (y^2) \ dy \\ \\ = \int^2_0 y \ sin (y^2) \ dy \\ \\ y^2 = U \\ \\ 2y \ dy = du \\ \\ = \dfrac{1}{2} \int ^2 _ 0 \ sin (U) \ du \\ \\ = - \dfrac{1}{2} \Big [cos \ U \Big]^2_o \\ \\ = - \dfrac{1}{2} \Big [cos \ (y^2) \Big]^2_o \\ \\ = - \dfrac{1}{2} cos (4) + \dfrac{1}{2} cos (0) \\ \\[/tex]

[tex]= - \dfrac{1}{2} cos (4) + \dfrac{1}{2} (1) \\ \\ = \dfrac{1}{2}\Big [1- cos (4) \Big] \\ \\ = \mathbf{0.82682}[/tex]

Answer:

ABE is the answer hope this helps

Answer:

2 11/12 cups of flour

Step-by-step explanation:

2 recipes are 2 1/2 cups of flour  

1/3 is 1/3 x 1 1/4= 1/3 + 1/12= 5/12  

So, 2 11/12 cups of flour

Answer:

The area of Alison's pizza would be 30 in.

Answer:

h=y/x

Step-by-step explanation:

Let's solve for h.

y=hx

Step 1: Flip the equation.

hx=y

Step 2: Divide both sides by x.

hx/x=y/x

h=y/x

Answer:

Step-by-step explanation:

Subtract s

Y - s = hx

divide by x

h = (y - s)/x

Answer:

x = 4

Step-by-step explanation:

6(+4)=48

6+24=48

6+24=48

6+24−24=48−24

6=24

6=24

6/6=24

...

Answer:1

Step-by-step explanation:it is right

Answer:

45% Of the cars are there

because it says 45% so I am pretty sure that is it

Answer:

132 ft³

Step-by-step explanation:

L=11    W=3   H=4

V=LWH

V=(11)(3)(4)

V=132 ft³

Answer:

maybe u should have paid attention in class buddy

Step-by-step explanation:

L

Answer:

can you give us the whole sheet?

Step-by-step explanation:

Answer:

l

Step-by-step explanation:

Answer:

E(X) = 38.9346

Var(X) = 25.588

E(Y) = 38.25

Var(Y) = 26.1875

Step-by-step explanation:

Given - Four buses carrying 153 high school students arrive to Montreal. The buses carry, respectively, 36, 46, 32, and 39 students. One of the students is randomly selected.One of the 4 bus drivers is also randomly selected.

To find - Compute the expectations and variances of X and Y.

Proof -

Let us assume that,

X be The number of students that were on the bus carrying this randomly selected student.

Y denote the number of students on his bus.

Now,

E(X) =  [tex]\frac{36(36) + 46(46) + 32(32) + 39(39)}{153}[/tex]

       = [tex]\frac{5957}{153}[/tex]

       = 38.9346

⇒E(X) = 38.9346

Now,

E(Y) = [tex]\frac{36 + 46 + 32 + 39}{4}[/tex]

      =  [tex]\frac{153}{4}[/tex]

      = 38.25

⇒E(Y) = 38.25

Now,

Var(X) = [tex]\frac{36(36 - 38.9346)^{2} + 46(46 - 38.9346)^{2} + 32(32 - 38.9346)^{2} + 39(39 - 38.9346)^{2}}{153}[/tex]

          = [tex]\frac{310.0276 + 2296.3144 + 1308.5091 + 0.1668}{153}[/tex]

          = [tex]\frac{3915.0179}{153}[/tex]

          = 25.588

⇒Var(X) = 25.588

Now,

Var(Y) = E(Y²) - [E(Y)]²

          = [tex]\frac{36^{2} + 46^{2} + 32^{2} + 39^{2} }{4} - (38.25)^{2}[/tex]

          = [tex]\frac{5957}{4} - 1463.0625[/tex]

          = 1489.25 - 1463.0625

          = 26.1875

⇒Var(Y) = 26.1875

The mistake is in the first step. You seem to want to divide through by 7, but you only did it correctly with the x ² term. What you should have after doing this is

7x ² + 9x + 2 = 0

→   x ² + 9/7 x + 2/7 = 0

This step isn't actually necessary to begin with since the starting quadratic is easily factorized:

7x ² + 9x + 2 = (7x + 2) (x + 1) = 0

Then

7x + 2 = 0   or   x + 1 = 0

7x = -2   or   x = -1

x = -2/7   or   x = -1

Answer:

Step-by-step explanation:

Divide the pentagon radially into 5 congruent, isosceles triangles.

Area of one triangle = ½×7.2×4.955 = 17.838 mm²

area of pentagon = 5×17.838 mm ≅ 89.2 mm²

Answer: The answer is B

Step-by-step explanation:

Answer:

a)  CI =  (  - 0,0352  ;  0,1472 )

b)  The CI  include 0 since that means we   don´t have sufficient evidence at α = 1 % to support differences between the two proportions

Step-by-step explanation:

From sample 1.    ( assigned to surgery)

sample size   n = 367

sample proportion   p₁  =  245/367    p₁  = 66,8 %   or p₁ = 0,668

Then  q₁ = 1 - 0,668   q₁ =  0,332

From sample 2.  ( assigned to observation )

sample size  n₂  = 364

sample proportion   p₂  =  223/364    p₂  = 61,2 %   or p₂ = 0,612

Then  q₂ = 1 - 0,612   q₁ =  0,388

Test Hypothesis is:

Null hypothesis                 H₀        p₂  =  p₁

Alternative Hypothesis    Hₐ        p₂ ≠ p₁

a) CI ( 99 %)     if  CI = 99%     significance level α = 1 %     α = 0,01

α/2 = 0,005  n z-table we look z (c) for  0,005

z(c)  = 2,578

CI    =              ( p₁  -  p₂  ) ± z(α/2) √(p₁*q₁) / n₁] + [ p₂*q₂/n₂

CI =(0,668 -0,612 ) ± 2,578 * √(0,668*0,332) /367 + (0,612*0,388)/364

CI = 0,056 ± 2,578*√6,04 *10⁻⁴ + 6,52 *10⁻⁴

CI = 0,056 ±  2,578*3,54*10⁻²

CI  = ( 0,056 - 0,0912 ;  0,056 + 0,0912 )

CI =  (  - 0,0352  ;  0,1472 )

b) The CI  include 0 since that means we   don´t have sufficient evidence at α = 1 % to support differences between the two proportions

Answer:

Im pretty sure it is 48 but it could be 96

Step-by-step explanation:

I just found the area and halved that.