Ask question

Ask question

All categories

3 years ago

8

Estimate the quotient using compatible numbers. 3,512 ÷ 9 30 400 300 40

1 answer:

madreJ [45]3 years ago

5 0

Answer:

400. just use simple devision and it'll tell you.

You might be interested in

How to solve this :') please help

blsea [12.9K]

Answer:

3/2

Step-by-step explanation:

sin(3π/4 - β) = sin(3π/4)cosβ - cos(3π/4)sinπ =

$\sin(\frac{3\pi}{4}-\beta)=\sin(\frac{3\pi}{4})\cos\beta-\cos\frac{3\pi}{4}\sin\beta\\=\frac{1}{\sqrt{2}}\cos\beta-(-\frac{1}{\sqrt{2}})\sin\beta\\\\=\frac{1}{\sqrt{2}}(\cos\beta +\sin\beta)\\\\\sin^2(\frac{3\pi}{4}-\beta)=\frac{1}{2}\cos\beta +\sin\beta)^2=\frac{1}{2}(\cos^2\beta +\sin^2\beta+2\sin\beta\cos\beta\\=\frac{1}{2}(1+\sin2\beta)=\frac{1}{2}(1-\frac{1}{5}) = \frac{2}{5}\\$

Use $\cot^2x=\csc^2x-1=\frac{1}{\sin^2x}-1$

so

$\cot^2(\frac{3\pi}{4}-\beta)=\frac{1}{\sin^2(\frac{3\pi}{4}-\beta)}-1 = \frac{1}{\frac{2}{5}}-1=\frac{5}{2}-1=\frac{3}{2}$

7 0

2 years ago

What expression represents the phrase eight less than the product of a number and two

JulijaS [17]

Answer:

Step-by-step explanation:

eight less then the product of a number and 2

" the product " means multiply

the product of a number and 2.......2x

eight less....-8

2x - 8 <=== ur expression

5 0

3 years ago

Read 2 more answers

What is the length (c) of the hypotenuse of the right triangle

aniked [119]

Answer:

13

Step-by-step explanation:

Pythagorean Theorem.

4 0

3 years ago

The probability that it rains in London on any particular day is 0.3.

kirill [66]

Answer:

Day 1=0.075

Day 2=0.0375

Step-by-step explanation:

Divide each day by 2

4 0

3 years ago

Read 2 more answers

Let u = {5, - 12} and c = -3 . What is || cu ||?

NISA [10]

Answer:21 I used math. way. it is a great app

you do 5-12= -7x-3=21 . in the calculator you don't need the (-s)

7 0

3 years ago

Read 2 more answers