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3 years ago

A solid right pyramid has a square base. The base edge length is 2 cm longer than the height of the pyramid.

2 answers:

7 0

Base length = 2 + height
height = 6
base length = 8
Volume of pyramid = width x length x height /3 = 8 x 8 x 6/3 = 128 cm^3

Tasya [4]3 years ago

5 0

Answer:

128cm

Step-by-step explanation:

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Solve 3(x + 2) > X. {xlx<-1} {x1x>-17 {x\x<-3) [x\x>-31

Georgia [21]

Answer:

-3 < x

Step-by-step explanation:

3(x + 2) > X.

Distribute

3x+6 >x

Subtract 3x from each side

3x-3x +6 >x-3x

6> -2x

Divide each side by -2, remembering to flip the inequality

6/-2 < -2x/-2

-3 < x

7 0

3 years ago

How do u solve (2d-5)/2 = (5d+2)/9

Rzqust [24]

Answer:

D= 49/8

Step-by-step explanation:

Cross-multiply.

(2d-5)/2 = (5d+2)/9

(2d−5)*(9)=(5d+2)*(2)

18d−45=10d+4

Subtract 10d from both sides.

18d−45−10d=10d+4−10d

8d−45=4

Add 45 to both sides.

8d−45+45=4+45

8d=49

Divide both sides by 8.

d= 49/8

So the answer is 49/8

I hope it's right!

8 0

3 years ago

A picture inside a frame is 2 inches longer than it is wide. The picture is in a frame that has a width of 3 inches on each side

geniusboy [140]

Answer:

The dimensions of the frame are 15 in x 13 in

Step-by-step explanation:

Let

x ----> the length of the picture

y ----> the width of the picture

we know that

$x=2+y$ -----> equation A

The area of the picture, including the frame is

$A=(x+6)(y+6)$

$A=195\ in^2$

$195=(x+6)(y+6)$ ----> equation B

substitute equation A in equation B

$195=(2+y+6)(y+6)$

solve for y

$195=(y+8)(y+6)\\y^2+6y+8y+48=195\\\\y^2+14y-147=0$

solve the quadratic equation by graphing

The solution is y=7 in

see the attached figure

Find the value of x

$x=2+7=9\ in$

Find the dimensions of the frame

$x+6=9+6=15\ in$

$y+6=7+6=13\ in$

therefore

The dimensions of the frame are 15 in x 13 in

7 0

3 years ago

write how much has passed. 10:45 am to 11:15 am. 2:15 pm to 2:30 pm 6:15 am to 6:45 am 3:30 pm to 4:30 pm 9:15 am to 10:00 am

liq [111]

Answer:

1. 30 minutes

2. 15 minutes

3. 30 minutes

4. 60 minutes/ 1 hour

5. 45 minutes

Step-by-step explanation:

1. 60 - 45 = 15

15+15 = 30

2. 30 - 15 = 15

3. 45 - 15 = 30

4. 60 - 30 = 30

30 + 30 = 60

5. 60 - 15 = 45

3 0

3 years ago

If a string is 28cm, what is the length of the side of a square?

12345 [234]

Answer:

hope will help you

good afternoon

6 0

2 years ago