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3 years ago

Help please i am stuck

Mathematics

2 answers:

Flura [38]3 years ago

8 0

Answer:

it is because so you can evenly add it

Step-by-step explanation:

because it is easyer to add 5/10 + 2/10

than 5/10 + 1/5 isnt it?

cestrela7 [59]3 years ago

7 0

Answer:

I don't know

sorry man!!

Step-by-step explanation:

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2376/12 = 198

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3 years ago

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Question: 15-4+ (7 - 5)

GREYUIT [131]

Answer:

Step-by-step explanation:

15 - 4 + 7 - 5 = 13

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Find the value of x 2+4( 3 + 2x ) = 3x + 8

solniwko [45]

2 + 4(3+2x) = 3x + 8

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3 years ago

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Simplify the expression by using a double-angle formula or a half-angle formula. (a) 2 tan(5°) 1 − tan2(5°)

antoniya [11.8K]

The question is related to trigonometry and we have to use the formula of double angle .

Here we use double angle formula of tangent function which is

$tan(2x) = \frac{2tan(x)}{1-tan^2(x)}$

Given expression is

$\frac{2tan (5 \degree)}{1-tan^2(5 \degree)}$

Comparing it with double angle formula, we will get x = 5

SO the required expression is equal to

$\frac{2tan (5 \degree)}{1-tan^2(5 \degree)} =tan(2*5 )$

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So the answer is tan(10) .

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3 years ago

The grade you make on your exam varies directly with the number of correct answers you get on the exam.Answering 15 questions co

yuradex [85]

Answer:

The grade you make on your exam varies directly with the number of correct answers. The constant of variation is 5

Solution:

Given, The grade you make on your exam varies directly with the number of correct answers you get on the exam.

Answering 15 questions correctly will give you a grade of 75 what is the.

We have to find what is the Constant of variation.

Now, according to the given information, grade  number of correct answer

Then, grade = c x number of correct answers, where c is constant of variation.

Now, substitute grade = 75 and number of correct answers = 15

$\text { Then, } 75=c \times 15 \rightarrow c=\frac{75}{15}=5$

Hence, the constant of variation is 5

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3 years ago