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Tcecarenko [31]

2 years ago

12

1800 tens equals blank thousands

1 answer:

kifflom [539]2 years ago

3 0

18 thousands = 1800 what grade are u in

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Can anyone explain how to expand and simplify 3(2a+5) +5 (a-2)

Step2247 [10]

Take the first bracket and it's multiplication, 3(2a+5)
You expand my multiplying everything inside the bracket by the number outside.
3*2a = 6a
3*5 = 15
Then multiply out the second bracket, 5(a-2)
5*a = 5a
5*-2 = -10
So now you have 6a + 15 + 5a - 10
Simplify it by collecting like terms, and you have:
11a + 5
And that's the answer, hope I helped!

5 0

3 years ago

Read 2 more answers

Referring to the table below, are the events is female and owns a dog independent?

Readme [11.4K]

Answer:

No

Step-by-step explanation:

They are independent iff:

P(F & D) = P(F) × P(D)

15.278/100 = (55/100) × (27.778/100)

0.15278 = 0.125279 (false)

Therefore, not independent

3 0

2 years ago

Forty students took a statistics exam having a maximum of 50 points. The distribution of score is given in the stem-and-leaf plo

Aneli [31]

Based on the fact that Tess's score was 25 in the statistics exam as shown by the stem-and-leaf plot, her Tess's percentile was 30th.

<h3>What was Tess's percentile?</h3>

Tess's percentile depends on the number of people whose scores she is above.

When looking at the stem-and-leaf plot, we see that Tess's score of 25 is the 13th score.

Her percentile is therefore:

= (13 - 1) / 40

= 12 / 40

= 30th percentile

Rest of the question is:

Tess’s score was 25. What was her percentile?

Find out more on percentile scores at brainly.com/question/24245405

#SPJ1

5 0

1 year ago

Please solve this question for a

ohaa [14]

Answer:

<h2> $a = \frac{8A}{\pi {r}^{2} } + 1 \\$ </h2>

Step-by-step explanation:

$A = \frac{1}{8} \pi {r}^{2} (a - 1) \\$

First of all multiply through by 8 to eliminate the fraction

That's

$8A = 8 \times \frac{1}{8} \pi {r}^{2} (a - 1) \\8 A = \pi {r}^{2} (a - 1)$

<u>Divide both sides by πr²</u>

$\frac{8A}{\pi {r}^{2} } = \frac{\pi {r}^{2}(a - 1) }{\pi {r}^{2} } \\ a - 1 = \frac{8A}{\pi {r}^{2} }$

Move 1 to the other side of the equation to make a stand alone

We have the final answer as

$a = \frac{8A}{\pi {r}^{2} } + 1 \\$

Hope this helps you

7 0

3 years ago

Read 2 more answers

Prove that 2✓3 is an irrational number .

Ainat [17]

Answer:

$\bold{2\sqrt{3} ~is~irrational.}$

Step-by-step explanation:

Hi there!

$\bold{2\sqrt{3} }$ is an irrational number.

Now, what is an irrational number? An irrational number is a number that goes on for ever.

Examples: $\bold{\pi ,\sqrt{2} , \sqrt{3} ....}$

$\bold{\sqrt{3} }$ is a surd (an irrational square root)

If we multiply 2 times $\bold{\sqrt{3} }$ , we will get an irrational number.

Thus, $\bold{2\sqrt{3} }$ is an irrational number.

Hope it helps! Enjoy your day!

$\bold{GazingAtTheStars}$

3 0

1 year ago