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4 years ago

PLEASE HELP LAST QUESTION

Mathematics

1 answer:

blagie [28]4 years ago

4 0

Answer:green area- triangle area = 72-9 = 63

Step-by-step explanation:

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Gina has a jar of marbles that contains 7 blue marbles, 5 red marbles, and 8 green marbles. She randomly selects a marble, recor

BigorU [14]

The probability that Gina randomly selected two red marbles is 1/19

<u>Explanation:</u>

Total number of marbles = 7 + 5 + 8

= 20

The probability of getting two red marbles in the fraction form is given as:

P(first red marble) = number of red marbles / total number of marbles

P(first red marble) = $\frac{5}{20} = \frac{1}{4}$

P(second red marble) = number of red marbles after 1 white marble is removed / total number of marbles after 1 red marble is removed.

P(first red marble) = $\frac{4}{19}$

P(two red marbles) = P(first) X P(second)

= $\frac{1}{4} X \frac{4}{19}$

= $\frac{1}{19}$

Therefore, the probability that Gina randomly selected two red marbles is 1/19

6 0

4 years ago

What is the solution to this equation?<br> -1/5(x+1 1/4)=-2 1/2

lubasha [3.4K]

$\large\displaystyle\text{$\begin{gathered}\sf -\frac{1}{5}\left(x+1\frac{3}{4}\right)=-2\frac{1}{2} \end{gathered}$}$

Multiply both sides of the equation by 20, the lowest common denominator of 5,4,2.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4\left(x+\frac{4+3}{4}\right)=-10(2\times2+1) } \end{gathered}$}$

Add 4 and 3 to get 7.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4\left(x+\frac{7}{4}\right)=-10(2\times2+1) } \end{gathered}$}$

Use the distributive property to multiply −4 times x 4/7.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-4\times\left(\frac{7}{4}\right)=-10(2\times2+1) } \end{gathered}$}$

Multiply −4 by 4/7.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-7=10(2\times2+1) \ \ \to \ \ [Multiply \ 2\times2] } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-7=10(4+1) \ \ \to \ \ [Add] } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-7=10\times5 \ \ \to \ \ [Multiply] } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x-7=-50 } \end{gathered}$}$

Add 7 to both sides.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x=-50+7 \ \ \to \ \ [Add] } \end{gathered}$}$

$\large\displaystyle\text{$\begin{gathered}\sf \bf{-4x=-43 } \end{gathered}$}$

Divide both sides by −4.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{x=\frac{-43}{-4} } \end{gathered}$}$

The fraction $\bf{\frac{-43}{-4}}$ can be simplified to $\bf{\frac{43}{4}}$ by removing the negative sign from the numerator and denominator.

$\large\displaystyle\text{$\begin{gathered}\sf \bf{x=\frac{43}{4} } \end{gathered}$}$

simplify

$\large\displaystyle\text{$\begin{gathered}\sf \bf{x=10\frac{3}{4} \ \ \to \ \ \ Answer } \end{gathered}$}$

<h2>{ Pisces04 }</h2>

8 0

2 years ago

Read 2 more answers

The answers are here I just need the work please!!

Flura [38]

the answer 236e

plzzzzzzzzzzz f u ck off

4 0

4 years ago

Question 2 of 10

Levart [38]

Answer:

D. y ≥ 0

Step-by-step explanation:

The range of the function refers to the possible y values which come under the limits of the function.

Here, we can see that no y values are less than 0.

Hence, the range of the function is :

D. y ≥ 0

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2 years ago

Survey indicate that between 50% and 60% of computers have virus. If these results apply to a security agency of 1,200 agents ea

elena-14-01-66 [18.8K]

The answer is 600, which is B.

8 0

3 years ago