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arlik [135]
3 years ago
12

Basalt is a very acid volcanic rock; the lava form of granite. True False

Mathematics
1 answer:
yulyashka [42]3 years ago
6 0

Answer: False

Explanation :

Although basalt is very acidity due to its non calcareous nature, it is made up of grains that are so fine that they are impossible to differentiate without the aid of a microscope (that is they can't be seen with the naked eyes or even with the use of magnifying lens), but this it's features are very different from that of granite which is composed of crystals of the four particles hornblende, quartz, feldspar, mica big enough to be easily seen without a microscope.

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Simplify (2 3/5) divided ( -3 3/4)
Ostrovityanka [42]

Flip over the second fraction

2 3/5= 13/5 ( Multiply the whole number with the denominator, 2*5=10 then add the numerator 10+3=13

-3 3/4= -15/4

13/5 * -4/15= -52/75

Answer :-52/75

4 0
3 years ago
Expand( a/3 - b/6 -1)^2
Artemon [7]

Answer:

Hello!

~~~~~~~~~~~~~~~~~~~~

( a/3 - b/6 -1)^2 as expanded form:

\frac{a^2}{9} - \frac{ab}{9} - \frac{b^2}{36} - \frac{2a}{3} - \frac{b}{3} + 1

Step-by-step explanation: You have to Simplify the expression.

Hope this helped you. Brainliest would be nice!

3 0
3 years ago
In triangle ΔABC, ∠C is a right angle and CD is the height to AB , Find the angles in ΔCBD and ΔCAD if: m∠A = 20°
Igoryamba
 triangle CBD = 180-20-90=70
trangle CAD=20
4 0
3 years ago
Read 2 more answers
Please help!! Will mark brainly! Flip the signs if needed.
emmainna [20.7K]

Answer:

1)

5 OVER THE SECOND POWER=25

6XDIVIDEDBY25=4.167

-4 OVER THE THIRD POWER=-64

-64DIVIDEDBY9X=-7.1


2) 7X+8(X-5)

8TIMESX=8X

8TIMES-5=-40

7XPLUS8X=15X

15XDIVIDEDBY-40==2.67

62-12=50

FOR #2THE SIGN WILL BE TURNED THE OTHER WAY.....

3) -12TIMES3/4=-16X

-12TIMES2=-24

-16XDIVIDEDBY-24=1.5

45+3=48

EVERYTHING IN BOLD IS THE AWSNERS I JUST SHOWED MY WORK HOPE THIS HELPS GOOD LUCK.....



7 0
3 years ago
What is the perimeter?<br> Explain how you got that.
Serga [27]

Answer:

The perimeter is 60in.

Step-by-step explanation:

Perimeter = the outer length

Add all the lengths

8 + 8 + 4 + 8 + 4 + 8 + 4 + 12 + 4

= 60 in

8 0
3 years ago
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