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4 years ago

Can someone please solve this please?!

Mathematics

1 answer:

sasho [114]4 years ago

4 0

Answer:

Step-by-step explanation:

This problem can be solved b using a combination. We're using a combination for this because the order in which you would pick the songs doesn't matter. To solve, we would plug in the number of songs we want to download, in this case 8, into the n value of the combination. Then we would plug in the number of songs that we can pick, in this case 3, in the r value of the combination. Solve the combination and we get 56.

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I need help in this one asappp!

Musya8 [376]

The picture is really blurry

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3 years ago

Which equation could be solved using this application of the quadratic formula? A. -2x2 â’ 8 = 10x â’ 3 B. 3x2 â’ 8x â’ 10 = 4 C

hodyreva [135]

The given question can be solve using quadratic formula.

The correct option is (c) $3x^2 +8x -10=-8$ .

Given:

The given equation is,

$x=\dfrac{-8\pm\sqrt{8^2-4(3)(-1)}} {2(3)}$ ---------------------------(1)

Write the general quadratic equation.

$ax^2 + bx +c=0$

Write the quadratic formula.

$x =\dfrac {-b \pm \sqrt{(b^2 - 4ac)} } {2a}$ ------------------------------- (2)

Compare equation (1) and (2).

$a=3\\b=8\\c=-2$

Substitute the value of $a$ , $b$ and $c$ in general quadratic.

$3x^2 +8x -2=0$

Subtract $8$ from each side of above equation.

$3x^2 +8x -2 -8=0-8\\3x^2 +8x -10=-8$

Thus, the correct option is (c) $3x^2 +8x -10=-8$ .

Learn more about quadratic equation here:

brainly.com/question/17177510

6 0

2 years ago

Find the area - PLSS HELPP AND HURRY PLS

Vilka [71]

Answer:

Step-by-step explanation:

its just 4 x 10, move the triangle to the other side

unless its not a triangle lol

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4 0

3 years ago

Read 2 more answers

Eunice wanted to save up for a mountain bike that costs £250. She baby-sits each week for 6 hours for £2.75 an hour, and does a

choli [55]

Answer:

Approximately 2 weeks

Step-by-step explanation:

Given data

Cost of bike= £250

<em>Assuming she works for 6 days</em>

1.Babysitting

6*2.75=£16.5 per day

for 6 days

=16.5*6

=£99

2. Saturday Job

=£27.50

Total earnings for the week

=£27.50+£99

=£126.5 weekly

Hence it will take her

=250/126.5

=1.97 week

Approximately 2 weeks to save up the amount

3 0

3 years ago

I WILL GIVE BRAINLIEST Ms. W has 400 followers on Twitter and is gaining 75 followers each day. Mrs. Hill has 1,000 followers on

Tems11 [23]

Answer:

7 items

Step-by-step explanation:

Sherry and Laura want to buy a new Ipod. Sherry has already saved $49 and will earn the rest by selling necklaces for $5 each. Laura doesn’t have any money saved, but will sell bracelets for $12 each. How many items must they sell to have the same amount saved for an Ipod?

49 + 5x = y

12x = y

7 items later

49+5(7)=84

12(7)=84

7 0

3 years ago

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