3 years ago

I’ll mark brainliest!

Mathematics

1 answer:

Over [174]3 years ago

6 0

Answer:

Step-by-step explanation:

By estimation, if you multiply 50 x 78 you get your answer.

You might be interested in

Cloud [144]

Answer:

y=4x

Step-by-step explanation:

you just have to find the slope!

3 0

3 years ago

Sheep go bark.<br> Cows go Chirp.

Lady_Fox [76]

Answer:

Sheep: Baaah

Cows: Moo

Dogs: Bark

Birds: Chirp

Step-by-step explanation:

3 0

3 years ago

Help Fast Please!!!!!!!!

SVEN [57.7K]

Answer:

answer is -8.4 if you add 3.6 and two it's 5.6 times 1.5 it will be -8.4

8 0

3 years ago

Read 2 more answers

Which number means the same as 2,000,000,000 70,000,000 6,000,000 300,000 40,000 2,000 100 10 7?

ale4655 [162]

The answer is b because 2,000,000,000
70,000,000
6,000,000
300,000
40,000
2,000
100
10
7

3 0

3 years ago

Find the value of x² - x+1 when x=√3 -1, in the form a+b√3 where a and b are integers

lidiya [134]

Answer:

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

Step-by-step explanation:

We are given $x=\sqrt{3}-1$ and we are asked to find the value of $x^2-x+1$ .

So we will need to find $x^2$ .

$x=\sqrt{3}-1$

Square both sides:

$x^2=(\sqrt{3}-1)^2$

Expand using identity: $(x-a)^2=x^2-2ax+a^2$ .

$x^2=(\sqrt{3})^2-2(\sqrt{3})(1)+1^2$

$x^2=3-2\sqrt{3}+1$

$x^2=4-2\sqrt{3}$

Let's go back to the full $x^2-x+1$ .

$x^2-x+1$

$(4-2\sqrt{3})-(\sqrt{3}-1)+1$

$4-2\sqrt{3}-\sqrt{3}+1+1$

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

5 0

4 years ago