All categories

3 years ago

Help me solve # 15 & 16

Mathematics

1 answer:

makkiz [27]3 years ago

6 0

Answer:

15) $C=frac{5}{9}(F-32)$

16) 12 hours

Step-by-step explanation:

15) $F=\frac{9}{5}C+32 \\F-32 = \frac{9}{5}C\\\frac{5}{9}(F-32)=C$

16) If Jim drove 168 mi in 4 hours, this means it takes him

$\frac{4 hours }{168 mi}$

this many hours to drive 1 mile. So if we multiply this by 504 mi:

$\frac{4 hours }{168 mi} 504 mi = 4 \cdot 3 hours = 12 hours$

You might be interested in

Which line has a constant of proportionality between y and x of 4/3<br><br>

Licemer1 [7]

Answer:

Line A: constant of proportionality is 4/3

Step-by-step explanation:

The equation in question is y = (4/3)x, where (4/3) is the constant of proportionality as well s the slope of the line. The only line here that has a slope greater than 1 is the blue line (A).

6 0

3 years ago

Read 2 more answers

The result of =ROUND(513.2413,2) is __

timama [110]

Answer:

513.24132

Step-by-step explanation:

None of the numbers are large enough to make the next number higher. Therefore that would just be your answer.

5 0

2 years ago

The measure of angle O is 7pi/6. The measure of its reference angle is.... ° and sin O is .....

scoray [572]

$\frac{7 \pi }{6}$ is in the 3rd quadrant... (It is also 210 degrees)
To find the reference angle (which is the distance to the x-axis)
$\frac{7 \pi }{6} - \pi = \frac{ \pi }{6}$ (or 30 degrees)

sin $\frac{ \pi }{6} = \frac{1}{2}$

6 0

3 years ago

In the equation y = x - 5, the slope is

mezya [45]

Answer:

the slope is x or 1x

Step-by-step explanation:

i hope this helps :)

4 0

3 years ago

yo can someone pls help me with this i’ve been crying for the last hour bc i can’t figure it out and it’s due in 30 minutes. the

mr Goodwill [35]

9514 1404 393

Answer:

area: 524 cm²
perimeter: 124.8 cm

Step-by-step explanation:

The rectangle in the middle has a width equal to the radius of the semicircular ends, so (20 cm)/2 = 10 cm.

The semicircular ends, together, make a complete circle of radius 10 cm.

The area is the sum of the areas of the parts:

A = LW = (21 cm)(10 cm) = 210 cm² . . . . . . rectangle area

A = πr² = π(10 cm)² = 100π cm² ≈ 314 cm² . . . . . circle area

The total area is ...

210 cm² +314 cm² = 524 cm² . . . . area of the figure

The perimeter of the figure is the sum of the lengths of all of the edges. From the left, working clockwise, we have ...

P = (1/2 circle of diameter 20) + (rectangle top = 21) +(1/2 circle of diameter 20) +(circle radius = 10) +(rectangle bottom = 21) +(circle radius = 10)

The two 1/2 circles add to a whole circle with a circumference of ...

C = πd = (3.14)(20 cm) = 62.8 cm

Then the whole perimeter is ...

P = 62.8 cm + 21 cm + 10 cm + 21 cm + 10 cm = 124.8 cm

_____

Note that we have used 3.14 for pi. If you use a more exact value, your answers will be slightly different.

4 0

3 years ago