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3 years ago

15

josie spent 4/7 of the money in her purse on some money on 18 markers. each marker cost $1.20. how much money was in Josie's pur

se to begin with

1 answer:

zloy xaker [14]3 years ago

3 0

Josie's purse contained $37.80 to begin with.

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Fifty-five percent of the members of the junior varsity swim team wear glasses. Of the team memebers who do not wear glasses, 30

GarryVolchara [31]

the probability that a randomly chosen member of the JV swim team does not wear glasses and is in the 10th grade is 14%.

Given, the members of the junior varsity swim team wear glasses is 55%.

And the members of junior varsity swim team who do not wear glasses and in 10th grade is 30%.

Let the total no. of members be x.

So, the members of the junior varsity swim team wear glasses (55%),will be

$0.55x$ .

The total number of members not wearing glasses, will be

$x - 0.55 x = 0.45 x$ .

Now, the no. of members not wearing glasses and in 10th grade will be,

$\frac{0.45x\times30}{100} =0.135x$

We know that the probability of an event E, P(E) will be,

$P(E)=\frac{No.\ of Favourable\ outcomes}{total \ no. \ of \ outcomes}$

So, the probability for no. of members not wearing glasses and in 10th grade will be,

$P(E)=\dfrac{0.135x}{x}$

$P(E)=0.135\\\\P(E)=13.5 \%$

Hence the nearest whole percent of probability is 14%.

For more details on probability follow the link:

brainly.com/question/795909

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2 years ago

Factor this polynomial completely x2 + 3x – 18 A. (x-2)(x + 9) B. (x+3)(x-6) оо C. (x - 3)(x+6) D. (x - 3)(x-6)

Umnica [9.8K]

Answer:

C. $(x-3)(x+6)$

Step-by-step explanation:

I think the equation meant $x^2+3x-18$ ?

Anyways, to factor these kinds of quadratic, keep into consideration:

$ax^2+bx+c=(x+w)(x+v)$

ONLY if:

$w+v=b\\wv=c$

Start off by finding factors of c, which in this case, -18:

±(1, 2, 3, 6, 9, 18)

If one of the numbers is negative then the other number must be positive.

Find which two factors will sum up to b, which in this case, is 3.

$1+(-18)\neq 3\\2+(-9)\neq 3\\3+(-6)\neq 3\\6+(-3)=3\\9+(-2)\neq 3\\18+(-1)\neq 3\\$

The only two factors that work are 6 and -3.

Replace them into the factored form:

$(x+w)(x+v)\\(x+6)(x-3)\\(x-3)(x+6)$

3 0

2 years ago

Read 2 more answers

Multiply.<br> (y- 4z) (4y - 7)<br> Simplify your answer

MrMuchimi

Answer:

4y²-7y+16yz+28z

Step-by-step explanation:

4y²-7y+16yz+28z

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3 years ago

alex bakes $24$ apple, blueberry, and cherry pies. The ratio of apple to blueberry to cherry pies is $1:4:3$. How many cherry pi

Kitty [74]

Answer:

Alex baked 9 cherry pies

Step-by-step explanation:

apple : blueberry : cherry = 1:4:3

apple + blueberry + cherry = 24

1 part: 24 / ( 1+4+3) = 24 / 8 = 3

** Cherry has 3 parts: 3 x 3 = 9

check: apple = 3 x 1 = 3

blueberry: 3 x 4 = 12

12 + 3 + 9 = 24

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3 years ago

How do you simplify this expression? <br> -12 divided by 3•(-8+(-4)*2-6)+2

garri49 [273]

0.1875

Step-by-step explanation:

Step 1:

Let the given expression in word form be expressed as

$(-12)/(3(-8 + ((-4)(2)) - 6) + 2)$

Step 2:

Let us we simplify it using BODMAS rule.

(-12)/ ( 3(-8-8-6) + 2)

(-12) / (3(-22)+2)

0.1875

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3 years ago