3 years ago

Please help with this

Mathematics

1 answer:

solong [7]3 years ago

3 0

Could you retake the picture it’s hard to read

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−14a−(−48a)<br> mind helping

MrRa [10]

Answer:

34a

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A gumball machine contains gumballs in several different colors.

Leno4ka [110]

The correct answer is 1/11

7 0

3 years ago

I need help with this

morpeh [17]

each pumpkin costs $10.50

63/6 = 10.5 or $10.50 and $10.50 x 2 = $21

that's all I got sorry ~(>_<。)＼

3 0

3 years ago

A map has a scale of 2 inches : 25 miles. Chandra uses the map to find the distance from the zoo to her house. The distance on t

geniusboy [140]

Step-by-step explanation:

Turn the ratio into a fraction

2in /25 mi

You want to have miles so you can flip the fraction and mutiply to cancel out the inches

(25mi / 2in) x 5in = (25 mi x 5in) / 2in

5 0

3 years ago

A card is drawn at random from a standard deck of playing cards (no jokers). If the card is a spade, the player wins $7; if it i

Akimi4 [234]

The expected value of the game is the mean value of the game

The expected value of the game is $1

<h3>How to determine the expected value?</h3>

There are 13 spades in a deck of card of 52

So, the probability of selecting a spade is:

P(Spade) = 13/52

Simplify

P(Spade) = 1/4

Winning = $7

The probability of not selecting a spade is:

P(Not spade) = 1 - 1/4

Simplify

P(Not spade) = 3/4

Lose = $1

The expected value of the game is:

$E(x) = \sum x * P(x)$

This gives

$E(x) = \frac 14 * 7 - 1 * \frac34$

Simplify

$E(x) = \frac 74 - \frac34$

Evaluate

$E(x) = 1$

Hence, the expected value of the game is $1