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sleet_krkn [62]
2 years ago
12

Please help this is for my test

Mathematics
1 answer:
Volgvan2 years ago
3 0

Answer:

Step-by-step explanation:

for qn 14 use the SOH CAH TOA method

use cos for this so. cos 47 degree= x/13

solve for x.

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If it takes a sloth 10 minutes to climb 7.5 feet what’s its climbing speed in miles per hour
qwelly [4]

Answer:

.009  miles/hour

Step-by-step explanation:

\frac{7.5}{10}\frac{feet}{minutes} * \frac{1}{5280}   \frac{miles}{feet} *\frac{60}{1}\frac{minutes}{hour}

This is the method you should take with unit conversions in general, just set up fractions so the units cancel out, like the 7.5 feet cancels out with the feet in the 1/5280 so miles is left on top.  

7 0
3 years ago
A radio station requires DJs to play to commercials for every 10 songs they play. What is the unit rate of this song to commerci
deff fn [24]
There will be 10 commercials if one hundred songs
5 0
3 years ago
Solve x2 + 1/2x +1/16=4/9
kolezko [41]

<u>Answer:</u>

x = 0.417 or x = -0.917

<u>Step-by-step explanation:</u>

We are given the following expression and we are to solve it for the variable x:

x ^2 + \frac { 1 } { 2 } x + \frac { 1 } { 1 6 } = \frac { 4 } { 9 }

We will find the least common multiple of 2. 6 and 9:

x^2 \times 144 +\frac{1}{2}x \times 144 +\frac{1}{16} \times 144 = \frac{4}{9} \times 144

Simplifying it to get:

144x^2+72x+9=64

144x^2+72x+9-64=0

144x^2+72x-55=0

Using the quadratic formula to solve for x:

x=\frac{-b \pm\sqrt{b^2-4ac} }{2a}

x=\frac{-72 \pm\sqrt{72^2-4(144)(-55)} }{2a}

x=\frac{5}{12} or 0.417

x=-\frac{11}{12} or -0.917

3 0
3 years ago
What is the volume of a sphere with an 18 inch diameter ?
photoshop1234 [79]
18 inch diameter = 9 inch radius
Sphere Volume   = <span>  4/3 • <span>π <span>• r³
</span></span></span><span>Sphere Volume   = <span>  4/3 * PI * 9^3
</span></span><span>Sphere Volume   = <span>  4/3 * PI * 729
</span></span><span><span>Sphere Volume   =   </span>3,053.628 </span>




3 0
3 years ago
Read 2 more answers
What is the value of 100?
Nesterboy [21]

Answer:

10

Step-by-step explanation:

Means back the numbers into multiples of several small numbers

Like:; 1. We take LCM of 40

Just break into multiples of small number

40= 2×2×2×5

2. We take LCM of 50

50= 5×5×2

So LCM for 100 is 2×2×5×5

after that see the pairs in the LCM like 2×2 or 3×3 or 4×4(same numbers)

Then write the the single number in place of two multipled numbers

Like:; 2×2 is written as 2 // 3×3 is written as 3

So we can write 100 into 2×2×5×5 and then after selecting pairs (2×2)×(5×5)

write pairs in single number 2×5

And so we get 2×5=10

So we find root of 100 that is 10

8 0
3 years ago
Read 2 more answers
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