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3 years ago

10

How many significant figures does the number 546.000 have

1 answer:

lana66690 [7]3 years ago

6 0

The significant figures are those digits that carry meaning contributing to its precision and includes all digits except: leading and trailing zeros that are placeholders or scales and spurious digits. 546.000 has 3 significant figures.

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Compared to a model of 9/12 , a model of 3/4 will show -------------(A)3 Times as many B)1/3 times as many D)The same number of)

aleksandrvk [35]

9514 1404 393

Answer:

B, B

Step-by-step explanation:

A model of 9/12 will have 12 parts, 9 of which are shaded.

A model of 3/4 will have 4 parts (1/3 as many), 3 of which are shaded. Each part of this model will correspond to 3 parts of the 9/12 model. Hence, each part is 3 times the size of a part in the 9/12 model.

B) 1/3 times as many

B) 3 times the size

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3 years ago

1. tan a = cot(a + 10°)

Temka [501]

Answer:

$a=40+90n$

Step-by-step explanation:

Use a cofunction identity on the right hand side or left hand side...

So $\tan(a)=\cot(90-a)$ .

We have the equation:

$\tan(a)=\cot(a+10)$

Make the above replacement:

$\cot(90-a)=\cot(a+10)$

Since cotangent has period 180 degrees, we can also write this as:

$\cot(90-a+180n)=\cot(a+10)$

So solving the following will give us a set of solutions for $a$ :

$90-a+180n=a+10$

Add $a$ on both sides:

$90+180n=2a+10$

Subtract 10 on both sides:

$80+180n=2a$

Divide both sides by 2:

$40+90n=a$

Symmetric property:

$a=40+90n$

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3 years ago

1. What is the measure of ∠ABC? What is the measure of ∠ABD?

borishaifa [10]

Answer:

<em> $\angle ABC=145\°$ and $\angle ABD=35\°$ </em>

Step-by-step explanation:

According to the given diagram, points C, B and D are in a straight line and AB is a common terminal side of both $\angle ABC$ and $\angle ABD$ .

So, $\angle ABC$ and $\angle ABD$ are pair of linear angles.

In the diagram, we can see that the side $AB$ lies on $145$ from left side and on $35$ from right side.

So, $\angle ABC=145\°$

and $\angle ABD=35\°$

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Bess [88]

4 is a regular rhombus I think don't quote me on that. I am pretty sure though

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How to solve 17.1 - 8.2y = -7.02

Wewaii [24]

the answer is

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3 years ago