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olasank [31]
2 years ago
13

Evaluate the expression for x = 4: 6+ (10 - x)2 - 20​

Mathematics
1 answer:
Liono4ka [1.6K]2 years ago
4 0

6 + (10 - 4)2 - 20 = 6 + 12 - 20 = 18 - 20 = -2

Assuming that the two in the middle of the expression is multiplied by (10 - x) the answer would be -2. I apologize if I did not read your question right.

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Neeeeeeeeeeeeeedddddddddddddddddddd will give brain
Igoryamba

Answer:

7

Step-by-step explanation:

11 times 7 =77

6 0
3 years ago
Huilan is 9 years younger than Thomas. The sum of their ages is 85. What is Thomas's age?
Naya [18.7K]

Answer:

Step-by-step explanation:

                                                                                                                        thomas age is 47

4 0
3 years ago
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The ratio of muscisians to actors was 2 to 5. If there were 28 musicians, how many actors were there?
julsineya [31]
2•14=28 which is the musicians

5•14=70 which would be the actors

The ratio would be 28:70
5 0
3 years ago
(\tan ^(2)\theta \cos ^(2)\theta -1)/(1+\cos (2\theta ))=
Vitek1552 [10]

(tan²(<em>θ</em>) cos²(<em>θ</em>) - 1) / (1 + cos(2<em>θ</em>))

Recall that

tan(<em>θ</em>) = sin(<em>θ</em>) / cos(<em>θ</em>)

so cos²(<em>θ</em>) cancels with the cos²(<em>θ</em>) in the tan²(<em>θ</em>) term:

(sin²(<em>θ</em>) - 1) / (1 + cos(2<em>θ</em>))

Recall the double angle identity for cosine,

cos(2<em>θ</em>) = 2 cos²(<em>θ</em>) - 1

so the 1 in the denominator also vanishes:

(sin²(<em>θ</em>) - 1) / (2 cos²(<em>θ</em>))

Recall the Pythagorean identity,

cos²(<em>θ</em>) + sin²(<em>θ</em>) = 1

which means

sin²(<em>θ</em>) - 1 = -cos²(<em>θ</em>):

-cos²(<em>θ</em>) / (2 cos²(<em>θ</em>))

Cancel the cos²(<em>θ</em>) terms to end up with

(tan²(<em>θ</em>) cos²(<em>θ</em>) - 1) / (1 + cos(2<em>θ</em>)) = -1/2

7 0
2 years ago
5 friends share 11 cookies. What fraction of a cookie will each of the 5 friends receive?
sukhopar [10]
Five goes into 11, two times. So each friend gets two cookies and 1/5 of the last one. So the answer is 2 and
1/5
3 0
3 years ago
Read 2 more answers
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