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3 years ago

Que numero soy? Si me triplican, restan 7 y suman 4 obtienen 42.

Mathematics

1 answer:

Iteru [2.4K]3 years ago

4 0

Can you please say that in english?

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If two events A and B are independent, and you know that P(A) =

boyakko [2]

Answer:

i think its 7/10

Step-by-step explanation:

4 0

3 years ago

How many cubes with side lengths of 1/2 cm does it take to fill the prism?

MAVERICK [17]

You can download answer here

tinyurl.com/wtjfavyw

8 0

3 years ago

Can someone help please?

Mariulka [41]

Answer:

Part 1) The area of the structure is $2,453.25\ ft^{2}$

Part 2) The slab will contain $1,226.625\ ft^{3}$ of cement

Step-by-step explanation:

Part 1) Find the area of the structure

we know that

The area of the structure is equal to the area of rectangle plus the area of semicircle

Find the area of rectangle

The area of rectangle is equal to

$A=LW$

we have

$L=70\ ft$

$W=30\ ft$

substitute

$A=(70)(30)$

$A=2,100\ ft^{2}$

Find the area of semicircle

The area of semicircle is

$A=\frac{1}{2}\pi r^{2}$

we have

$\pi =3.14$

$r=15\ ft$

substitute

$A=\frac{1}{2}(3.14)(15)^{2}$

$A=353.25\ ft^{2}$

Find the area of the structure

Adds the areas

$A=2,100+353.25=2,453.25\ ft^{2}$

Part 2) If the structure is 6 in thick, how many cubic feet of cement will the slab contain?

Remember that

$1\ foot=12\ inches$

Convert inches to feet

$6\ in=6/12=0.5\ ft$

Find the volume of the structure

To obtain the volume , multiply the area by 0.5 ft (thick)

$V=2,453.25*0.5=1,226.625\ ft^{3}$

7 0

3 years ago

What is the vertex of the following graph?

boyakko [2]

The graph represents a parabola and a parabola is maximum or minimum at its vertex . So we need to check the graph , and find the point where the graph is maximum or minimum. And from the given graph , we can say that it is a downward up parabola which is minimum at its vertex . And the minimum point is (1.4). So the vertex is (1,4) .

6 0

4 years ago

What is the last step in solving 7/8 = 3x - 5/11 ? add to both sides of the equation subtract from both sides of the equation mu

nata0808 [166]

Answer:

The last step in solving this equation was D. Divide both sides of the equation by 3

Step-by-step explanation:

For finding the solution, let's solve the equation:

7/8 = 3x - 5/11

-3x = - 5/11 - 7/8

-3x = (-40 - 77)/88 (Subtracting at the right side of the equation)

-3x = -117/88

3x = 117/88 (Multiplying by - 1 at both sides of the equation)

x = (117/88)/3 (Dividing by 3 at both sides of the equation)

x = 117/264

The last step in solving this equation was D. Divide both sides of the equation by 3

4 0

4 years ago