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gizmo_the_mogwai [7]

3 years ago

15

A bag contains 30 cookies: 9 vanilla, 9 chocolate, and 12 oatmeal. What is the probability that a chocolate is randomly selected

?
A) .30
B) .33
C) .40
D) .60

1 answer:

telo118 [61]3 years ago

3 0

There is 9 chocolate cookies, so the probability of choosing chocolate is $\frac{9}{30}$ . We then simplify to get $\frac{3}{10}$ , or 0.3.

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A season ticket to the olde theater costs $76 and admits you to 6 plays. single tickets to each play cost $15. how much do you s

Maksim231197 [3]

Answer:

14

Step-by-step explanation:

6×15=90 90-76=14 you save 14 dollars

4 0

3 years ago

X^2 - y^2 = 100

luda_lava [24]

Answer:

20

Step-by-step explanation:

Let's start by rewriting the second equation in terms of "x":

$x+y=5$

Subtract y from both sides:

$x=5-y$

Now, substitute "5-y" for "x" in the first equation:

$(5-y)^2-y^2=100$

Note that:

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

$25-10y+y^2-y^2=100$

Cancel out like terms:

$25-10y=100$

Subtract 25 from both sides:

$-10y=75$

Divide both sides by -10

$y=\frac{75}{-10}=\frac{15}{-2}=-\frac{15}{2}$

Now, substitute this value back into either of the equations to solve for x.

$x+y=5\\x-\frac{15}{2}=5\\$

Add 15/2 to both sides:

$x=5+\frac{15}{2}\\x=\frac{10}{2}+\frac{15}{2}\\x=\frac{25}{2}$

Now, find the difference:

$x-y=\frac{25}{2}-(-\frac{15}{2})=\frac{25}{2}+\frac{15}{2}=\frac{40}{2}=20$

8 0

3 years ago

daniiel is currently 26 years older than his son. in 6 years he will be three times older than his son. how old are both of them

Molodets [167]

Answer:

Daniiel is 33 years old.

The son is 7 years old.

Step-by-step explanation:

x+26=3x

The x represents the son.

To solve for x:

-26=x-3x

-26=-2x

x=13

Since the father will be 3 times his son's age in six years we subtract 6.

x=7

This means the son is 7 years old as of right now. To find the father's age you do 7+26=33

7 0

3 years ago

URGENT EXPLANATION AND SOLVING

Alex787 [66]

$\cfrac{a}{\sin(a)} = \cfrac{b}{\sin(b)} 
$

$\cfrac{31}{\sin(42)} = \cfrac{37}{\sin(x)} 
$

$31\sin(x) = 37 \sin(42)$

$\sin(x) = \cfrac{37 \sin(42) }{31}$

$x = \sin^{-1}(\cfrac{37 \sin(42) }{31} )$

$x = 53 \textdegree$

Answer: 53°

7 0

4 years ago

Read 2 more answers

Solve for X, will give you brainliest and a like

grigory [225]

Answer

Step-by-step explanation:

One solution :

x = -1/3 = -0.333

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

-5*(3*x+1)+4*x-(10*x+2)=0

Step by step solution :

Step 1 :

Equation at the end of step 1 :

((0 - 5 • (3x + 1)) + 4x) - (10x + 2) = 0

Step 2 :

Step 3 :

Pulling out like terms :

3.1 Pull out like factors :

-21x - 7 = -7 • (3x + 1)

Equation at the end of step 3 :

-7 • (3x + 1) = 0

Step 4 :

Equations which are never true :

4.1 Solve : -7 = 0

4 0

3 years ago

Read 2 more answers