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xxTIMURxx [149]
2 years ago
9

Given: a and b are first-quadrant angles, sin a = 5/13 , and cos b = 3/5 , evaluate cos(a + b).

Mathematics
1 answer:
Tanzania [10]2 years ago
7 0

Step-by-step explanation:

please mark me as brainlest

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Lines a and bare parallel 79 What is the measure of angle b? Enter your answer in the box b=​
Len [333]

If lines a and b are parallel, then aº = 79º = dº = bº.

6 0
3 years ago
There are 5 boys and 10 girls in the glee club. Which ratio represents the number of boys in the club to the total number of stu
Misha Larkins [42]

Answer:

2:1

Step-by-step explanation:

If you that this would be 10:5 you would be half correct

Solution:

No. of boys in glee club:No.of girl in glee club

10:5

(divided by the table of on both sides)

2:1

5 0
3 years ago
Read 2 more answers
Tammy learns in science class that water freezes when its temperature is
Oksanka [162]

The required number line that shows all of the possible

temperatures is option A.

<h3>Inequalities and number line</h3>

From the given question, we have that water freezes when its temperature is no more than 32 °F

The statement no more than 32 °F shows that the temperature cannot be greater than 32 but less than or equal to 32. This is written mathematically as;

t ≤ 32.

We are to select the number line that shows all of the possible temperatures. The required number line that shows all of the possible

temperatures is option A.

Learn more on number lines here: brainly.com/question/24644930

7 0
2 years ago
Evaluate each using the values given.<br> 7) 3 - x + x + y; use x = 4, and y=-1
kkurt [141]

Answer:

2

Step-by-step explanation:

3-4+4+(-1) (-4+4=0)

=3-1

=2

4 0
3 years ago
Mrs. Fronkos class for evry 6 boys there are 8 girls. Write the ratio of boys to girls in simplest form
Rama09 [41]

Answer:

3:4

Step-by-step explanation:

there are 6 boys for every 8 girls, so the initial ratio is 6:8. however, this can be simplified by finding a number both 6 and 8 are evenly divisible by. In this case, you can divide the ratio by 2. 6/2 = 3 and 8/2 = 4, which is why the simplified form is 3:4

5 0
3 years ago
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