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PSYCHO15rus [73]
3 years ago
5

Ssomeone help me in this one now please​

Mathematics
1 answer:
Georgia [21]3 years ago
7 0
270 men is the answer
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PLS HELP ME
MrRa [10]


false... even if you got 100 on the next test, you would only have an 84 average


Hope this helped!!! :) (comment if you don't understand)

3 0
3 years ago
if postage costs $0.54 for the first once and $0.22 for each additional ounce, calculate the cost of mailing a 10-once envelope
Dvinal [7]
You would just multiply $0.22 8 times then add the $0.54 to it and you get $2.30
8 0
4 years ago
Read 2 more answers
Prove that.....cos^2α(cosec^2α-cot^2α)=cos^2α​
Dafna1 [17]

Step-by-step explanation:

We must prove that

cos²a(csc²a-cot²a) = cos²a

If we look at both sides, we can see that we have cos²a * something = cos²a. Therefore, if we can get that something to equal 1, we have our proof. In this case, that something is csc²a-cot²a. Using this information, we can work from within the parenthesis and go from there.

We can start by expanding the items in the parenthesis. Taking that csc(x) = 1/sin(x) and cot(a) = cos(x)/sin(x), we can say that

cos²a(csc²a-cot²a) = cos²a(1/sin²a - cos²a/sin²a). Because both items in the parenthesis have a denominator of sin²a, we can subtract cos²a from 1 to get

cos²a(1/sin²a - cos²a/sin²a)= cos²a((1-cos²a)/sin²a))

Next, we know that cos²a+sin²a=1, so 1-cos²a = sin²a. Plugging that in, we get

cos²a((1-cos²a)/sin²a)) = cos²a(sin²a/sin²a)

= cos²a(1)

= cos²a

4 0
3 years ago
Plz don’t answer saying I can’t see or I don’t understand
Norma-Jean [14]
The answers should be

1. -12d-2
2. 56a+32b
3. 6a-12b+18
4. 8g+8h-16
5 0
2 years ago
Given: ΔABC; a= 10; b = 13, and ∠C = 70°. Find the length of side c to the nearest whole number
Alexxandr [17]

Answer:

c=13\ units

Step-by-step explanation:

we know that

Applying the law of cosines

c^2=a^2+b^2-2(a)(b)cos(C)

we have

a=10\ units\\b=13\ units\\C=70\°

substitute

c^2=10^2+13^2-2(10)(13)cos(70\°)

c^2=180.07

c=13\ units

6 0
3 years ago
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