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2 years ago

Will mark brainliest Please help with these two questions for me

Mathematics

2 answers:

USPshnik [31]2 years ago

7 0

Answer:

Go ahead give him Brainlyist I need it but he can have since he is really good

Step-by-step explanation:

My name is Ann [436]2 years ago

4 0

refer to attachments

Attachment 1=Solution 1
Attachment 2=Solution 2

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Find the exact value of cot7pi/4

nata0808 [166]

Answer:

-1

Step-by-step explanation:

The radian gives the coordinates: ( $(\sqrt{2 } /2,-\sqrt{2 } /2)$ (found using the unit circle)

cot=x/y

Plug the x and y coordinates into their respective places in the equation.

You get the answer of -1.

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2 years ago

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A ruler is used to measure the width of the spine of a book.

sp2606 [1]

Answer:

1.00 cm Is the greatest level of precision possible for the measurement of the width of the spin of the book

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3 years ago

The desired percentage of SiO2 in a certain type of aluminous cement is 5.5. To test whether the true average percentage is 5.5

Ket [755]

Answer:

since p value < x(0.05) so we reject the null hypothesis

step 5 ( conclusion)

reject the null hypothesis and there is sufficient evidence to support the claim that the true average percentage differs from 5.5.

Step-by-step explanation:

check the attachment for detailed explanation

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3 years ago

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In triangle ABC the measure of angle B is 8 degrees more than three times the measure of angle A. The measure of angle C is 37 d

katrin [286]

B is 8 plus 3A
C is 37 plus A
A is A
A plus B plus C is 180
A plus 8 plus 3A plus 37 plus A is 180
5A plus 45 is 180
5A is 135
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3 years ago

123 12 a d 3 and which term are like terms?

Anna11 [10]

Answer:

3ad3 will be the answer

Step-by-step explanation:

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3 years ago

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