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prohojiy [21]
2 years ago
7

In a class of 25 students, 15 of them have a cat,

Mathematics
1 answer:
mote1985 [20]2 years ago
8 0

(I cannot draw the Venn diagram, sorry)

25 students in a class, 3 of them have neither -> Only 22 students have at least a pet.

15 of them have a cat, 16 of them have a dog -> There are 31 - 22 = 9 students that have both a cat and a dog


So, the probabilty of a person chosen at random that has a cat and a dog is 9 : 25 = 0.36 -> 36%.

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L'Shanda can choose between 3 sweaters and 4 skirts. If she selects 1 sweater and 1 skirt, how many possible outcomes are in a s
Alex787 [66]

Answer:

12 outcomes are possible

Step-by-step explanation:

3x4=12

5 0
3 years ago
Simplify the expression below. (-3x2 + 2x - 4) + (4x2 + 5x +9)
TiliK225 [7]

Answer: =x2+7x+5

Step-by-step explanation:

−3x2+2x−4+4x2+5x+9

=−3x2+2x+−4+4x2+5x+9

Combine Like Terms:

=−3x2+2x+−4+4x2+5x+9

=(−3x2+4x2)+(2x+5x)+(−4+9)

=x2+7x+5

Answer:

=x2+7x+5

4 0
4 years ago
Read 2 more answers
Jason is covering an ottoman with fabric. The ottoman is in the shape of a rectangular prism that is 37 cm long, 21 wide, and 30
GrogVix [38]

Answer:

4,257 m²

Step-by-step explanation:

step 1

Find the lateral area of the rectangular prism (ottoman)

The lateral area is

LA=PH

where

P is the perimeter of the base

H is the height of the prism

Find the perimeter of the base P

P=2(37+21)=116 cm

we have H=30 cm

<em>Find the lateral area</em>

LA=116(30)=3,480 m²

step 2

Find the area of the top of the ottoman

B=37*21=777 m²

step 3

we know that

The fabric needed to cover the sides and top of the ottoman is equal to sum the lateral area plus the area of the top

3,480+777=4,257 m²

7 0
3 years ago
What is the volume of the rectangular prism​
drek231 [11]

Answer:

Step-by-step explanation:

V=WHL

8 0
3 years ago
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Last question please help((: #10
GrogVix [38]
We would use the sine function because we have an angle the hypotenuse, and the unknown opposite side.

sin(x)=opposite/hypotenuse
sin(60)=x/30
√3/2=x/30 (cross multiply)
30*√3/2=x (divide numerators and denominators by 2)
x=15√3 ft. 
So the correct answer is A

Hope this helps
6 0
4 years ago
Read 2 more answers
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