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3 years ago

CAN SOMEONE HELP PLEASE

Mathematics

1 answer:

Arisa [49]3 years ago

6 0

Answer:an equivalent answer is 4/14 or 18/63

Step-by-step explanation:

i really dont understand stand the question but there

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At a temperature of t degrees Fahrenheit, sound travels s feet per second, where s equals 21.9 StartRoot 5 t plus 2457 EndRoot

mafiozo [28]

Answer:

32.63 F

Step-by-step explanation:

The function:

$s = 21.9 \; \sqrt{ 5 t + 2457 }$

represents sound travels s at feet per second, where t is the temperature at Fahrenheit degrees.

We know that sound traveled at a rate of 1121 ft/sec. To find the temperature we need to replace with s value and isolate t for the above function.

$1121 = 21.9 \; \sqrt{ 5 t + 2457 }$

$\frac{1121}{21.9} = \sqrt{ 5 t + 2457 }$

$51.19^2 = 5 t + 2457$

$2620.13 - 2457 = 5 t$

$\frac{163.13}{5} = t$

$32.63 \; F= t$

8 0

3 years ago

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In a factory, a parabolic mirror to be used in a searchlight was placed on the floor. it measured 50 centimeters tall and 90 cen

slavikrds [6]

Y=-2/81x^2+50 is the answer

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4 years ago

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Help me with Question 4

ruslelena [56]

Answer:

Step-by-step explanation:

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3 years ago

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Match the products of rational expressions with their simplest forms.

Alborosie

Lets simplify each one of the rational expressions using the product rule of exponents: $a^n*a^m=a^{n+m}$ and the quotient rule of exponents: $\frac{a^n}{a^m} =a^{n-m}$ .

1. $\frac{-3x^2}{2y^2} * \frac{y^2}{9x} =- \frac{x}{6} = \frac{-1}{6} x$

2. $\frac{5y^2}{10x^2} * \frac{4x^2}{y} =2y$

3. $\frac{-9y^2}{5x} * \frac{-10x^2}{3y} =6xy$

4. $\frac{14x^2}{5y} * \frac{-10y}{7x} =-4x$

We can conclude that you should pair the rational expressions with their simplest form as follows:
$6xy-----\ \textgreater \ \frac{-9y^2}{5x} * \frac{-10x^2}{3y}$
$\frac{-1}{6} x-----\ \textgreater \ \frac{-3x^2}{2y^2} * \frac{y^2}{9x}$
$-4x-----\ \textgreater \ \frac{14x^2}{5y} * \frac{-10y}{7x}$
$2y-----\ \textgreater \ \frac{5y^2}{10x^2} * \frac{4x^2}{y}$

7 0

3 years ago

Jackson weighed 6 pounds and 3 ounces when he was born. When he was 4 weeks old, he weighed 128 ounces. How much weight did Jack

IceJOKER [234]

128 at 4 weeks

6 lb 3 oz born

There are 16 ounces in a pound

Multiply 16 by 6 you get 96

Add the three you get 99

He was 99 oz day of his birth

Now subtract the two

128-99
29

He gained 29 ounces

7 0

3 years ago