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3 years ago

Solve x: (On the attachment), please help, due in for tomorrow! Xx

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

4 0

7-x / 5 = 7

Multiply each side by 5:

7-x = 35

Subtract 7 from each side:

-x = 28

Multiply each side by -1:

x = -28

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The two figures are proportional find the value of x

wolverine [178]

Answer:

c 30 inches

Step-by-step explanation:

7 0

3 years ago

PLEASE HELP

dsp73

Answer:

All events are independent

Step-by-step explanation:

You are given the table

$\begin{array}{cccc}&\text{Chocolate}&\text{Vanilla}&\text{Total}\\\text{Adults}&0.21&0.39&0.60\\\text{Children}&0.14&0.26&0.40\\\text{Total}&0.35&0.65&1.00\end{array}$

Two events A and B are independent when

$Pr(A\cap B)=Pr(A)\cdot Pr(B)$

a) A="Chocolate"

B="Adults"

A and B="Chocolate and Adults"

$Pr(A)=0.35\\ \\Pr(B)=0.60\\ \\Pr(A\cap B)=0.21$

Since $0.35\cdot 0.60=0.21$ events are independent

b) A="Children"

B="Chocolate"

A and B="Children and Chocolate"

$Pr(A)=0.40\\ \\Pr(B)=0.35\\ \\Pr(A\cap B)=0.14$

Since $0.40\cdot 0.35=0.14$ events are independent

c) A="Vanilla"

B="Children"

A and B="Vanilla and Children"

$Pr(A)=0.65\\ \\Pr(B)=0.40\\ \\Pr(A\cap B)=0.26$

Since $0.65\cdot 0.40=0.26$ events are independent

4 0

3 years ago

Find the mean, median, mode, and standard

Veronika [31]

Answer:

Step-by-step explanation:

mean = sum of data / no of data

20 + 58 + 74 + 77 + 77 + 85 + 86 + 90 + 95 + 98 / 10

760 / 10

to find median u should arrange the data from ascending to descending order.

since the given data is already arranged u dont need to change.

median = (N + 1)/2 (N means no of data)

=10 + 1 / 2

=11 / 2

=5.5

= 5 th term + 6 th term /2

=77 + 85 /2

=162 / 2

=81

mode means most repeating number . so in this given data 77 is repeated two times while others occured just one times . so the mode of the given data is 77.

Mode = 77

4 0

3 years ago

The denominator of a fraction is four more than the numerator. If both numerator and denominator are increased by eight, the sim

Naddik [55]

The denominator of the fraction is four more than the numerator. The fraction:
$\frac{x}{x+4}$

If both numerator and denominator are increased by eight, the simplified result is 5/6:
$\frac{x+8}{x+4+8}=\frac{5}{6} \\ \\
\frac{x+8}{x+12}=\frac{5}{6} \ \ \ |\times (x+12) \\ \\
x+8=\frac{5}{6}x+\frac{5}{6} \times 12 \\ \\
x+8=\frac{5}{6}x+10 \\ \\
x-\frac{5}{6}x=10-8 \\ \\
\frac{1}{6}x=2 \ \ \ |\times 6 \\ \\
x=12 \\ \\
\frac{x}{x+4}=\frac{12}{12+4}=\boxed{\frac{12}{16}}$

The original fraction is 12/16.

6 0

3 years ago

I need to know the area in the rectangle pictured above please!

bija089 [108]

Answer:

180 ft^2

Step-by-step explanation:

Area of the rectangle is calculated by multplying : height*widht*lenght

15*6*2 = 180 ft^2

6 0

2 years ago