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4 years ago

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

∘

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

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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