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Tcecarenko [31]
4 years ago
12

Find the value for a that makes sins=cos25

Mathematics
1 answer:
maria [59]4 years ago
4 0

Answer:

Ans: 0.766

Step-by-step explanation:

Use the trig identity: cos (a + b) = cos a,cos b - sin a.sin b

cos (25 + 15) = cos (40) = cos 25.cos 15 - sin 25.sin 15.

The arc

40

∘

doesn't have exact functional value.

You may get its approx. value by calculator.

cos 40 = 0,766

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The distance from Jason’s house to school is 0.5 kilometers.What is the distance in meters?
inn [45]

Answer:


Step-by-step explanation:

So we know that we have 1000 m in 1 km.

So convert 0.5 km to m we multiply 0.5 by 1000

0.5*1000 = 500

7 0
3 years ago
Read 2 more answers
A teenager’s heart pumps an average of 7200 L of blood every 24 hours. What is the rate of change of volume of blood?
love history [14]

Answer:

300L per hour

Step-by-step explanation:

The rate of change of volume of blood pumped by the teenager's heart expresses the volume of blood pumped with respect to hour.

Rate of change of volume of blood = \frac{volume of blood}{time}

                           = \frac{7200L}{24}

                           = 300L/hour

The rate of change of volume of blood by the teenager's heart is 300 litres per hour. This implies that his/ her heart pumps 300 litres of blood every hour.

7 0
3 years ago
Which is the best estimate for the average rate of change for the quadratic function graph on the interval 0 ≤ x ≤ 4?
tatuchka [14]

Answer:

The best estimate for the average rate of change is -2

Step-by-step explanation:

we know that

the average rate of change using the graph is equal to

\frac{f(b)-f(a)}{b-a}

In this problem we have

f(a)=f(0)=0  

f(b)=f(4)=-8

a=0

b=4

Substitute

\frac{-8-0}{4-0}=-2

4 0
4 years ago
Read 2 more answers
How do I solve this question (19a)?
fredd [130]
Answer i think would be
l-4x+4l
---------
x-1
8 0
4 years ago
Help this is due tmr!!
Mumz [18]

Answer:

A is correct

Step-by-step explanation:

4 0
3 years ago
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