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3 years ago

Can someone help my teacher didnt teach me this yet !!!!!!!

Mathematics

1 answer:

Ivan3 years ago

3 0

Volume= length x width

So the length and width are 13 so 13x13= 169 but it says ROUND to the nearest whole number so 169 rounded to the nearest whole number is 170. So your answer is 170. I hope this helps

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Solve the following triangle. Given A=51 degrees b=40 c=45

STALIN [3.7K]

Answer:

$a=36.87\ units$

$B=57.47^o$

$C=71.53^o$

Step-by-step explanation:

step 1

Find the length side a

Applying the law of cosines

$a^2=b^2+c^2-2(b)(c)cos(A)$

substitute the given values

$a^2=40^2+45^2-2(40)(45)cos(51^o)$

$a^2=1,359.4466$

$a=36.87\ units$

step 2

Find the measure of angle B

Applying the law of sines

$\frac{a}{sin(A)} =\frac{b}{sin(B)}$

substitute the given values

$\frac{36.87}{sin(51^o)} =\frac{40}{sin(B)}$

$sin(B)=\frac{sin(51^o)}{36.87}{40}$

$B=sin^{-1}(\frac{sin(51^o)}{36.87}{40})=57.47^o$

step 3

Find the measure of angle C

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

$A+B+C=180^o$

substitute the given values

$51^o+57.47^o+C=180^o$

$108.47^o+C=180^o$

$C=180^o-108.47^o=71.53^o$

5 0

3 years ago

five less than a number is at least 40. write and solve an inequality to find the minimum value of the number

mina [271]

Answer:

Step-by-step explanation:

5 less than your number is at least 40. Let the number be x. So rephrasing the statement, 5 less than x is greater than or equals 40.

x-5 ≥ 40

x-5+ 5 ≥ 40+5 (adding 5 to both sides to single out the x in LHS)

∴x ≥ 45

In other words, x is at least 45.

Therefore, the minimum value of x is 45.

8 0

3 years ago

If Tan is 3/4 what is sin?

Pani-rosa [81]

Answer:

tanA=34⟹sinA=332+42−−−−−−√=35

Now, we have

sinAcosA=tanA

⟹3/5cosA=tanA

⟹cosA=13×54×3

⟹cosA=45

⟹cosAsinA=4×35×5=1225

Step-by-step explanation:

7 0

3 years ago

nevsk [136]

Answer:

46 cm

Step-by-step explanation:

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4 0

3 years ago

Explain text functions, count, countif and averageif functions in own words. Looking for some original content.

Lilit [14]

Answer:

count: Sum up a pre-set interval of values in excel cells.

countif: sum up a pre-set interval of values according to certain rules determined by the user.

averageif: sum the values in cells and the divides the result by the total of cells considered in the function.

Step-by-step explanation:

count: Sum up a pre-set interval of values in excel cells.

countif: sum up a pre-set interval of values according to certain rules determined by the user.

averageif: sum the values in cells and the divides the result by the total of cells considered in the function.

3 0

3 years ago