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svetoff [14.1K]
4 years ago
6

How to solve right triangles

Mathematics
1 answer:
umka2103 [35]4 years ago
5 0
Subtract one side from 90 and get the other side
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Solve for x I got x=28.394. is that correct?
quester [9]
Cosine 65 = 12 / x
0.4226183 = 12 / x
x = 12 / 0.4226183
<span> <span> <span> x = 28.39441</span></span></span>

So, I'd say you are correct.

6 0
3 years ago
Need help fast!!! Algebra question!!!
ddd [48]
AVERAGE between 90 and 100%
means not including 90 and 100% but not including 90 or 100%


average=(sum of values in set)/(how many values in the set)

so
4 exams, so there are 4 values
average=(sum)/4

the sum is the known+unknwon
sum=76+99+86+x

so
90<span><</span>average and average <span><</span>100
or
90<span><</span>average<span><</span>100


lets say average=a

a=sum/number
a=(76+99+86+x)/4

90<(76+99+86+x)/4<100
90<(76+99+86+x)/4 and (76+99+86+x)/4<100

solve each for x and find intersection

90<span><</span>(76+99+86+x)/4
times 4 both sides
360<span><</span>261+x
minus 261 both sides
99<span><</span>x


(76+99+86+x)/4<u><</u>100
times 4 both sides
261+x<u><</u>400
minus 261 both sides
x<u><</u>139


so

99<u><</u>x<u><</u>139
since max score is 100
99<u><</u>x<u><</u>100

interval notaion is
[99,100]


answer is 2nd one


3 0
3 years ago
Read 2 more answers
What is the rate of change and initial value for the linear relation that includes the points shown in the table?
Wittaler [7]

Answer:

Initial value 12, rate of change: -2

Step-by-step explanation:

Step 1

Find the rate of change

we know that

In a linear equation the rate of change is equal to the slope

The formula to calculate the slope between two points is equal to  

m=\frac{y2-y1}{x2-x1}  

we have

A(1,10)\ B(2,8)  

Substitute the values  

m=\frac{8-10}{2-1}

m=-2  ----> rate of change

Step 2

Find the initial value

The equation of  the line into slope-point form is equal to

y-y1=m(x-x1)

Substitute

y-10=-2(x-1)

y=-2x+2+10y=-2x+12

The initial value is the value of y when the value of x is equal to zero (is the y-intercept)

y=-2*0+12=12----> initial value

7 0
3 years ago
Read 2 more answers
The sum of the exterior angles of a polygon is always 180 degrees.<br><br> True<br> or<br> False
Bezzdna [24]
False. it said ,"The sum of the exterior angles of a polygon is always 360 degrees<span>. ... By an inductive proof, this is </span>true<span> for all </span>polygons." that is what i think.
5 0
3 years ago
Read 2 more answers
A company printed 10,398 flyers for its sales people. Each sales person received the same
Vlad1618 [11]

Answer:

3,2,6

Step-by-step explanation:

if you divide 10,398 by all numbers 3,2 and 6 have whole numbers:)

4 0
2 years ago
Read 2 more answers
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