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3 years ago

Find the size of the angle a.Diagram not drawn accurately

Mathematics

1 answer:

pickupchik [31]3 years ago

6 0

Answer:

45°

Step-by-step explanation:

Since,

3a + a + 2a + 2a = 360°

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Vicki puts 10 books on a shelf.

nadezda [96]

$the\ mean\ hickness\ of\ Vicki's\ books= \frac{28\ cm}{10} =2.8\ cm\\\\28\ cm\ \rightarrow\ 10\ boocks\\120\ cm\ \rightarrow\ x\\\\x= \frac{120\cdot 10}{28} \approx42.9\\\\Ans.\ Vicki\ can\ put\ 42\ books.$

6 0

3 years ago

Help<br><br> (5a-3a^3)*(4a-1)

ivann1987 [24]

Answer:

$-12a^{4} + 3a^{3} + 20a^{2} -5a$

Step-by-step explanation:

$(5a-3a^{3} )$ • $(4a-1)$

Let's use FOIL (first, outer, inner, last) to solve this. We'll multiply the terms by one another in that fashion.

$20a^{2} - 5a - 12a^{4} + 3a^{3}$

Rearrange in decreasing exponents.

$-12a^{4} + 3a^{3} + 20a^{2} -5a$

3 0

3 years ago

One pound of ground beef is $3.09. How much is 4.5 pounds? Round to the nearest hundredth, if necessary.

olga55 [171]

Since 1 pound is $3.09, 4.5 pounds will be:

$4.5*3.09=13.905$

It says to round to nearest hundredth, so your answer is $13.91.

5 0

3 years ago

Read 2 more answers

How many positive integer factors of 100! are multiples of 2 or 3?

elena-s [515]

Positive integer factors of 100:

1, 2, 4, 5, 10, 20, 25, 50, 100

Now find if they are a multiple of 2 or 3.

2, 4, 10, 20, 50, 100

That is 6 factors.

3 0

3 years ago

How to do this question plz

Akimi4 [234]

Answer:

the answer is 17.60

Step-by-step explanation:

if im not mistaken the answer is 17.60. this is because 1/3 of 24 is 8, and 12x2 (the two kids) equals 24, and 60% off of 24 is 9.6. 8+9.6 is 17.6(0) :)

8 0

3 years ago

Find the size of the angle a.Diagram not drawn accurately​

Find the size of the angle a.Diagram not drawn accurately