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IrinaVladis [17]
2 years ago
13

A shipment contains 9 igneous, 7 sedimentary, and 7 metamorphic rocks. If 7 rocks are selected at random, find the probability t

hat exactly 5 are sedimentary.
Mathematics
1 answer:
yKpoI14uk [10]2 years ago
7 0

Answer:

75 percent

Step-by-step explanation:

see the thing is

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A block of wood has the shape of a triangular prism. The bases are right triangles. Find its surface area. 4.5 in 6 in 16 in 7.5
yanalaym [24]

Answer:

315 in²

Step-by-step explanation:

the surface area is the sum of the areas of all the individual shapes in the surface.

so, we have the 2 triangular bases and 3 rectangles as is sides.

the area of a rectangular triangle is a×b/2

we need them twice, so that is then a×b

a=4.5

b=6

a×b = 27 in²

one rectangle is 16×7.5 = 120 in²

one rectangle is 16×6 = 96 in²

one rectangle is 16×4.5 = 72 in²

total surface area is therefore

A = 27+120+96+72 = 315 in²

4 0
3 years ago
Factorise<br> x<br> 2<br> +<br> 2<br> x<br> −<br> 48
Hatshy [7]

Answer:

x^2+ 2x +-48

product: -48  sum: 2

8, -6

x^2 +8x - 6x - 48

=> x(x+8) -6(x+8)

=> (x+8)(x-6)

Hope it helps...........

8 0
3 years ago
Point Q'Q ′ Q, prime is the image of Q(0,6)Q(0,6)Q, left parenthesis, 0, comma, 6, right parenthesis under the translation (x,y)
Marina86 [1]

Q is located at (0,6)

The translation rule is (x,y) \to (x+7,y-5) which says to add 7 to the x coordinate and subtract 5 from the y coordinate. Doing that to (0,6) moves it to (7,1) which is where point Q' is located.

In other words, if you shift point Q(0,6) seven units to the right and five units down, then it arrives at Q ' (7,1)

<h3>Answer: (7, 1)</h3>

8 0
3 years ago
a restaurant worker used 5 loaves of wheat and 2 loaves of rye bread to make sandwiches for an event.what does the ratio 7:2 mea
kvasek [131]
The ratio  7: 2 means the total loaves of loaves to the total loaves of rye bread.

total loaves : Rye 
        7          :  2

7 0
3 years ago
GIVING OUT BRAINLIEST HELP MEE PLSSS
SIZIF [17.4K]

Answer:

15

Step-by-step explanation:

Hope this helps

Please pick me as the  brainest

3 0
3 years ago
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