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SSSSS [86.1K]
3 years ago
8

If a/b = c/d, then ad = bc.

Mathematics
1 answer:
Nikolay [14]3 years ago
7 0

Answer:

The statement is true

see the explanation

Step-by-step explanation:

we have the proportion

\frac{a}{b}=\frac{c}{d}

we know that

To solve the proportion multiply in cross

so

(a)(d)=(b)(c)

ad=bc

therefore

The statement is true

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The value of cosine is undefined at pi and 2pi radians.<br> TRUE<br> FALSE
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Answer: False

Step-by-step explanation:

False, the value of cosine at pi and 2pi is equal to -1 and 1 respectively. You can test this by using the pi circle or a calculator. Let pi = 180 degrees. Cosine is always defined and alternates between 1 and -1.

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Multiplicative inverse of a neggative<br>rational number is​
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for \: a \: rational \: number \:  \frac{a}{b}   \: such \: that \: 0  > a \:  \:  \:  \:  \:  \: 0  <  b \\ its \: multiplicative \: inverse \: is \:  -  \frac{b}{a}

6 0
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Jose sold 102 raffle tickets for his basketball team. If he was given 125 tickets to sell, about what percentage of his tickets
Setler [38]
He sold about <span>80%  of his tickets</span>
4 0
3 years ago
What is the equation of the line that passes through the point (-2,0) and has a slope of -2
Tcecarenko [31]

Answer:

y = -2x -4

Step-by-step explanation:

The equation of a line is y = mx + b, where m is the slope of the line, and b is the y-intercept.  We are told that the slope of the line is -2, so we can start with

y = mx + b

y = -2x + b

We can figure out the value of b by plugging in the coordinates of the point given (-2, 0)

0 = -2(-2) + b

0 = 4 + b

Subtract 4 from both sides of the equation

-4 = b

Then plug that value of b back into the equation above:

y = -2x + (-4) or y = -2x -4

6 0
3 years ago
Read 2 more answers
Tickets to a show cost $5.50 for adults and $4.25 for students. A family is purchasing 2 adult tickets and 3 student tickets.
jarptica [38.1K]

The exact cost is $23.75 for the show, and the exact change they should get is $1.25.

An adult ticket to the show costs $5.50

A student ticket to the show costs $4.25.

A family buys two adult tickets and three student tickets. This would imply that the total cost of two adult tickets would be

⇒ 2 × 5.5 = $11

It also implies that the total cost of three student tickets is

3 × 4.25 = $12.75

The total cost of two adult tickets and three student tickets is

⇒ 11 + 12.75 = $23.75

If the family pays $25, the exact change they should get is

⇒ 25 - 23.75 = $1.25

Thus, the exact cost is $23.75 for the show, and the exact change they should get is $1.25.

Learn more about Arithmetic operations here:

brainly.com/question/25834626

#SPJ1

5 0
1 year ago
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