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amid [387]
1 year ago
10

Calculate the density of a piece of wood with a mass of 80g and a volume of 90cm³

Mathematics
1 answer:
likoan [24]1 year ago
4 0

Answer:

0.89 g/cm³

Step-by-step explanation:

used the formula d=M/V

M is mass which is = 80g

V is volume which is = 90cm³

d = 80/90

d = 0.89 g/cm³

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Can someone check my answer?
ivanzaharov [21]

The measure of EC is 1 ft.

Solution:

Given data:

AD = 8 ft, DB = 2 ft, AE = 4 ft

To find the measure of EC:

Using triangle proportionality theorem,

<em>If a line is parallel to one side of a triangle intersects the other two sides, then it divides the two side proportionally.</em>

$\frac{AD}{DB} =\frac{AE}{EC}

$\frac{8}{2} =\frac{4}{EC}

Do cross multiplication.

8EC=2\times 4

8 EC = 8

Divide by 8 on both side of the equation, we get

EC = 1

EC = 1 ft

Hence the measure of EC is 1 ft.

7 0
3 years ago
Log; (3x+2) = log,(4x-6)
egoroff_w [7]

Answer:

x = 8

Step-by-step explanation:

Using the rule of logarithms

log x = log y ⇔ x = y

Given

log(3x + 2) = log(4x - 6), then

4x - 6 = 3x + 2 ( subtract 3x from both sides )

x - 6 = 2 ( add 6 to both sides )

x = 8

5 0
3 years ago
Which expression is equivalent to 17s - 10 + 3(2s +1)?
klemol [59]

Answer:

7s

Step-by-step explanation:

17s-10=3(2s+1)

17s-10 = 7s

2s+1=3s

7s+3s=10

10-3=7s

6 0
3 years ago
5. Lines s and t intersect as shown in the picture. Which pair of angles are vertical?
Tanzania [10]

Answer: angle 7 and angle 10

Step-by-step explanation: trust me its correct

4 0
2 years ago
READ THE IMAGE, CHECK ALL THAT APPLY
iren [92.7K]
Its D becuase of math thing :) its D


8 0
3 years ago
Read 2 more answers
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