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3 years ago

Please help me i’m am struggling hard on these questions !!!!

Mathematics

2 answers:

pochemuha3 years ago

8 0

Answer:

5. 6.

4 boys 8 boys 16 tires 4 tires

----------- = -------------- ---------------- = ---------------

7 girls 14 girls 4 cars 1 car

7. 8.

8 correct 40 correct 16 pearls 8 pearls

-------------- = ----------------- -------------- = --------------

10 total 50 total 20 opals 10 opals

9. 10 .

32 pencils 8 pencils 7 balls 21 balls

---------------- = ---------------- ------------- = -------------

8 erasers 2 erasers 9 bats 27 bats

neonofarm [45]3 years ago

4 0

Answer:

5. 14

6. 8

7. 40

8. 10

9. 2

10. 21

Step-by-step explanation:

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Rewrite each equation in vertex form by completing the square. Then identify the vertex.

ioda

ANSWER

Vertex form;

$y = 3( {x + \frac{3}{2} })^{2} - \frac{35}{4}$

Vertex

$V( - \frac{3}{2} , - \frac{35}{4} )$

EXPLANATION

Given:

$f(x) = 3 {x}^{2} + 9x - 2$

We complete the square as follows:

$y = 3( {x}^{2} + 3x) - 2$

$y = 3( {x}^{2} + 3x + \frac{9}{4} ) - 2 - 3 \times \frac{9}{4}$

The vertex form is:

$y = 3( {x + \frac{3}{2} })^{2} - \frac{35}{4}$

The vertex is

$V( - \frac{3}{2} , - \frac{35}{4} )$

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3 years ago

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3 years ago

Which is the better buy on a swing set that has a retail price of $449?

Naddika [18.5K]

A) 20% of 449 = 89.8

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