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andrew-mc [135]
3 years ago
13

Please help me with this now!!!please!!

Mathematics
1 answer:
Alja [10]3 years ago
4 0

Answer:

C

Step-by-step explanation:

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Of the 520 students participating in a chess tournament, 35% were male. How many females were in the tournament?
elena55 [62]

Answer:

182

Step-by-step explanation:

take 520 and multiply by 0.35

8 0
3 years ago
Read 2 more answers
If ab = 9 and a² + b² = 81, then (a+b)² = ?​
Andre45 [30]

Answer:

99

Step-by-step explanation:

Through some clever algebra, we can combine our first two equations using the fact that

(a+b)^2=a^2+2ab+b^2

We have the a² and the b² in the equation a^2+b^2=81, and we <em>almost </em>have a 2ab in the equation ab=9. To get that 2ab, we can simply double both sides of the first equation to get 2ab=18. From there, we'll add the first two equations together, giving us the summed equation

a^2+b^2+2ab=81+18\\a^2+2ab+b^2=99

And since (a+b)^2=a^2+2ab+b^2, we can equivalently say that

(a+b)^2=99

5 0
3 years ago
Of the pupils in Year 9 say their favourite colour
guapka [62]

Answer:

I believe it's 675

Step-by-step explanation:

Im not saying I'm right tho so check before anyone uses this answer. I believe it's that because i think it's multiplying so I multiplied 75 x 9 and got 675.

6 0
3 years ago
How many pairs of angles are marked as congruent in the figures below?
MrRissso [65]

Answer:2

Step-by-step explanation:According to the diagram,there is a single angle marking for one pair of angles V and M,a double angle marking for angles X and L.

5 0
3 years ago
Read 2 more answers
Graphing the Solution of an Inequality on the Number Line
katrin2010 [14]

Answer:

x < 4

Step-by-step explanation:

Step 1: Simplify both sides of the inequality.

Step 2: Subtract x from both sides.

Step 3: Subtract 6 from both sides.

Step 4: Multiply both sides by 4/(-1).

6 0
3 years ago
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