32 people are in one class 75% are girls.how much is the % of boys

Answer:

17.91

Step-by-step explanation:

Answer:

6751080 different ways

Step-by-step explanation:

President: 190 choices

Vice president 189 choices

secretary: 188 choices

190*189*188 =6751080 different ways

Answer:

23

Step-by-step explanation:

the difference between each number in the sequence is 4. Taking 4 away from 27 gives you 23

Hope this helps!

Answer:

$585

Step-by-step explanation:

simply find 13% of 4500. 0.13 x 4500 is $585

Answer:

8 cups

Step-by-step explanation:

hope I could help

Answer:

y = -(x + 1)^2

Step-by-step explanation:

I graphed the parabola on the graph below so you can see that it has a vertex at (-1,0) and opens down.

Answer:

Weak positive correlation

Step-by-step explanation:

Because it can’t be strong otherwise the points would have been very close to the line of best fit

Answer:

y = -2.5x - 22

Step-by-step explanation:

Answer:

x = ±6

Step-by-step explanation:

=> [tex]x^3 = 216\\[/tex]

Taking cube root on both sides

=> x = ±6

Answer

[tex]\sqrt[7]{a^{5} }[/tex] is the correct answer to the given question.

Step-by-step explanation:

The given question is incomplete the options are missing also the question is also not well described the question is  [tex]a^{5/7}[/tex].

[tex]a^{5/7}[/tex]

So it can be written as    [tex]\sqrt[7]{a^{5} }[/tex] is the correct answer.

Answer:

Step-by-step explanation:

The dimensions of the portrait are attached.

The total area of the portrait is represented by its width 5+x and its length x+1.

We know by definition that the area of a rectangle is

[tex]A= w \times l[/tex]

Where [tex]w[/tex] is the width and [tex]l[/tex] is the length.

Using the given expressiones, we have

[tex]A=(5+x)(x+1)=5x+5+x^{2} +x=x^{2} +6x+5[/tex]

Therefore, the right answer is D.

Answer:

I have given it step by step below.

Step-by-step explanation:

(i) Mean = sum of observations/total no. of observation

= 23 + 20  + 4 + 19 + 28 + 35 + 25 + 0  +1 + 30/ 10

= 185/10

= 18.5

(ii) additional 35 runs

New Mean

=previous total  + 35/10 + 1     (the 1 gets added in denominator because of                                           the additional observation)

= 185 + 35/11

= 220/11

= 20

Hope this helps you!

Answer:

you can do 4/3 x 1 if I get it wrong im sorry

Answer:

C

Step-by-step explanation:

The answer is X+4

Please see the attached picture for full solution

Hope it helps

Good luck on your assignment

Answer:

x = -16

Step-by-step explanation:

2/3x +1 = 1/6x - 7

Multiply each side by 6 to get rid of the fractions

6(2/3x +1) = 6(1/6x - 7)

4x +6 = x - 42

Subtract x from each side

4x-x +6 = x-x-42

3x +6 = -42

Subtract 6 from each side

3x +6-6 = -42-6

3x = -48

Divide each side by 3

3x/3 = -48/3

x = -16

So the right answer is -16

Look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

1/49

Step-by-step explanation:

7^-2= 1/7^2 = 1/49

Solution,

7^-2

=1/7^2

=1/49

Hope it helps

Good luck on your assignment

Answer:

The correct option is AAS.

Step-by-step explanation:

Consider the diagram below.

If two angles are congruent it implies that they are same in degrees or radians.

So, the angles ∠XWZ and ∠XYZ are equal.

So, in the diagram below, one of the triangles have two angles that are equal to the corresponding angles on the other triangle and the two triangles share a side.

Then according to the Angle-Angle-Side (AAS) statement the triangles △ WXZ and △ YZX are congruent.

Thus, the correct option is AAS.

The congruence theorem that can be used to prove that △WXZ ≅ △YZX is; AAS

ΔWXZ and ΔYZX share side XZ

∠WXZ and ∠XZY are right angles

∠XWZ and ∠XYZ are congruent

Read more about AAS Congruency at; https://brainly.com/question/7727792

Answer: The coordinates will be  (0,2) after a  180 degrees rotation.

Step-by-step explanation:

                  90         180

 (0,-2) →    ( -2,0)→   ( 0,2)

Answer:

(0,2)

Step-by-step explanation:

Rule for a rotation of 180° about the origin: [tex](x,y)\rightarrow(-x,-y)[/tex]

We are given the point (0, -2).

Applying the rule:

[tex](0,-2)\rightarrow(0,2)[/tex]

A' should be at (0,2).

2: V = 330 m^2

3: V = 144 m^2

Step-by-step explanation:

All the figures shown are rectangular prisms.

You can find the volume of a rectangular prism through this formula:

[tex]V = wlh[/tex], where w is the width, l is the length, and h is the height.

To find the volume of a composite figure, find the volume of each smaller figure, then add them together.

Question 2: 330 m^2

V = 3 * 5 * 6 (smaller prism)

V = 8 * 5 * 6 (larger prism)

smaller prism = 90 m^2

larger prism = 240 m^2

240 + 90 = 330 m^2

Question 3: 144 m^2

V = 3 * 4 * 2 (small prism 1)

V = 3 * 4 * 2 (small prism 2)

V = 12 * 4 * 2 (large prism)

small prisms: 24 m^2

large prism: 96 m^2

24 + 24 + 96 = 144 m^2

Answer:

D.

Step-by-step explanation:

Because its three times as much as 42 so its opposite of multiplication so its division with is also 3x=42 and to solve that you divide 3x by 3 and just get x then you divide 42 and 3 and u get your answer( im not gonna do the math lol)

Answer:

a) [tex]P(148<X<175)=P(\frac{148-\mu}{\sigma}<\frac{X-\mu}{\sigma}<\frac{175-\mu}{\sigma})=P(\frac{148-160}{8}<Z<\frac{175-160}{8})=P(-1.5<z<1.875)[/tex]

[tex]P(-1.5<z<1.875)=P(z<1.875)-P(z<-1.5)= 0.970-0.0668= 0.9032[/tex]

b) [tex]P(X>164)=P(\frac{X-\mu}{\sigma}>\frac{164-\mu}{\sigma})=P(Z>\frac{164-160}{8})=P(z>0.5)[/tex]

[tex]P(z>0.5)=1-P(z<0.5)= 1-0.691= 0.309[/tex]

c) [tex]P(X<179)=P(\frac{X-\mu}{\sigma}<\frac{179-\mu}{\sigma})=P(Z<\frac{179-160}{8})=P(z<2.375)[/tex]

[tex]P(z<2.375)= 0.991[/tex]

Step-by-step explanation:

Let X the random variable that represent the heights of Guinean travels , and for this case we know the distribution for X is given by:

[tex]X \sim N(160,8)[/tex]  

Where [tex]\mu=160[/tex] and [tex]\sigma=8[/tex]

Part a

We are interested on this probability

[tex]P(148<X<175)[/tex]

We can ue the z score formula given by:

[tex]z=\frac{x-\mu}{\sigma}[/tex]

Using this formula we got:

[tex]P(148<X<175)=P(\frac{148-\mu}{\sigma}<\frac{X-\mu}{\sigma}<\frac{175-\mu}{\sigma})=P(\frac{148-160}{8}<Z<\frac{175-160}{8})=P(-1.5<z<1.875)[/tex]

And we can find this probability with this difference using the normal standard distribution or excel:

[tex]P(-1.5<z<1.875)=P(z<1.875)-P(z<-1.5)= 0.970-0.0668= 0.9032[/tex]

Part b

[tex]P(X>164)=P(\frac{X-\mu}{\sigma}>\frac{164-\mu}{\sigma})=P(Z>\frac{164-160}{8})=P(z>0.5)[/tex]

And we can find this probability with this difference using the normal standard distribution or excel:

[tex]P(z>0.5)=1-P(z<0.5)= 1-0.691= 0.309[/tex]

Part c

[tex]P(X<179)=P(\frac{X-\mu}{\sigma}<\frac{179-\mu}{\sigma})=P(Z<\frac{179-160}{8})=P(z<2.375)[/tex]

And we can find this probability with this difference using the normal standard distribution or excel:

[tex]P(z<2.375)= 0.991[/tex]

Answer:

m = 2

Step-by-step explanation:

Given

y = mx + 2

Since (- 3, - 4) is a point on the line then it satisfies the equation.

Substitute x = - 3 and y = - 4, the coordinates of the point, into the equation and solve for m, that is

- 4 = - 3m + 2 ( subtract 2 from both sides )

- 6 = - 3m ( divide both sides by - 3 )

2 = m

Answer:

B. Tamar is correct.

Step-by-step explanation:

A triangle can be proven as a right angle triangle if  it follows Pythagoras theorem. The pythagoras theorem can be use to know if a triangle is right angled triangle. Therefore, pythagoras theorem is expressed as

c² = a² + b²

where

c = hypotenuse sides

a and b can be any of the opposite or adjacent sides.

The hypotenuse side is the longest side so the triangle with length side of 40, 42 and 58 will have the hypotenuse as 58 . The other sides will be the opposite and adjacent sides

c² = a² + b²

58² = 40 ² + 42²

3364 = 1600 + 1764

3364 = 3364

Therefore, it obeys Pythagoras principle. Tamar's work is correct . The triangle is a right angled triangle.

Answer:

B

Step-by-step explanation:

Answer:

t =2 seconds

Step-by-step explanation:

We have, a function that represents the height y of the pebble after dropping the balcony as follows :

[tex]y=80-16t^2[/tex]

The pebble lands on the top of a sign that is 16 feet high.

It is required to find the time does the pebble drop before hitting the sign. The above equation becomes,

[tex]80-16t^2=16\\\\-16t^2+80=16\\\\-16t^2=64\\\\t^2=4\\\\t=2[/tex]

So, the pebble hits the sign after 2 seconds.

Answer:

9,11,19

Step-by-step explanation:

let x be the hours and y the percentage

x=0 , y=100

x=8 , y=80

x=9  , y=0

x=10 , y=100 , x=11 still charging so it is still plugged in

x=16 , y=60 and so on ....

x=18  , y=20

and it will charged again

the answer is 9,11,19

Answer:

"Perfect square trinomials" are quadratics which are the results of squaring binomials. (Remember that "trinomial" means "three-term polynomial".)

For instance:

(x + 3)2

= (x + 3)(x + 3)

= x2 + 6x + 9

...so x2 + 6x + 9 is a perfect square trinomial.

9514 1404 393

Answer:

Step-by-step explanation:

Assuming angles are numbered clockwise at each intersection before moving to the next intersection, corresponding angles will differ in their numbers by a factor of 4.

Among the offered choices, the differences of angle numbers are ...

2, 12, 5, 4, 1, 7

Of those pairs listed, angles 2 and 14, and angles 3 and 7 are corresponding angles.

Answer:

Of course Piano,keyboard and guitar.

Answer:

El angulo mide 150 grados.

Step-by-step explanation:

I have attached the work to your problem // Agregué una foto con tu trabajo.

Please see the attachment below // Mirala abajo.

I hope this helps! // Espero que te ayude mi foto. Saludos de Colombia.