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3 years ago

7

In a class of 7 there are 2 students who forgot their lunch. If the teacher chooses 2 students what is the probability that both

of them forgot their lunch

1 answer:

Sever21 [200]3 years ago

6 0

It is about a 28% chance.

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BD bisects ∠ABC. Find m∠ABD and m∠CBD.

Pepsi [2]

Answer: angle ABD=1/2 angle ABC ,Angle CBD =1/2 angleCBD

3 0

3 years ago

%of 25 is 14.<br><br> what percent of 20 is 11?<br><br> 15 is

ikadub [295]

The first question:

'is' in mathematics means equal
'of' in mathematics means multiplication

$\frac{x}{100} \times 25 = 14\\\\\frac{x}{4} = 14\\\\\boxed{\bf{x=56}}$

56% of 25 is 14.

And the second question:

'is' in mathematics means equal
'of' in mathematics means multiplication

$\frac{x}{100} \times 20 = 11\\\\\frac{x}{5} = 11\\\\\boxed{\bf{x = 55}}$

55% of 20 is 11<span>.</span>

4 0

4 years ago

Solve for w in the proportion.

Svet_ta [14]

Answer:

w=40

Step-by-step explanation:

5 0

3 years ago

The coordinates of the vertices of triangle cde are c (-3, 1), d (-1, 4) and e (-6, 4). a transformation applied to triangle cde

Aloiza [94]

Answer:

The coordinates of point s are (-3 , 3)

Step-by-step explanation:

* Lets revise some transformation

- If the point (x , y) translated horizontally to the right by h units

then the new point = (x + h , y)

- If the point (x , y) translated horizontally to the left by h units

then the new point = (x - h , y)

- If the point (x , y) translated vertically up by k units

then the new point = (x , y + k)

- If the point (x , y) translated vertically down by k units

then the new point = (x , y - k)

* Now lets solve the problem

∵ The vertices of triangle cde are c (-3 , 1) , d (-1 , 4) , e (-6 , 4)

∵ The new coordinates of two vertices are q (-1 , 6) , r (-6 , 6)

- The image of point d is q and the image of point e is r

∵ Point d = (-1 , 4) and point q = (-1 , 6)

∵ Point e = (-6 , 4) and point r = (-6 , 6)

- The x-coordinate has no change but the y-coordinate added by 2

∴ The triangle cde translated vertically up by 2 units to create the

congruent triangle sqr

- Lets translate point c two units up to find the coordinates of point s

∵ Point c = (-3 , 1)

∴ Poin s = (-3 , 1 + 2) = -3 , 3)

* The coordinates of point s are (-3 , 3)

6 0

3 years ago

Tricia is looking to buy speakers that cost $349 plus the sales tax rate, which is 2.7%. What is the total amount she will pay a

m_a_m_a [10]

Answer:

The total amount she will pay after taxes is $339.58

Step-by-step explanation:

The Total cost of the speaker plus tax = $349

The tax rate applied = 2.7%

Tax payable = $349 * 2.7% = $9.423

The tax amount on the speaker is Tricia = $9.423

Thus, the total amount she will pay after taxes (i.e. paying $9.423) for purchase of the Speaker will be = $349 - $9.423 = $339.58.

The original price of the speaker excluding tax is $339.58.

5 0

3 years ago