All categories

2 years ago

Need help on my math test. Any Answers?

Mathematics

2 answers:

julsineya [31]2 years ago

8 0

I don’t get how some people be knowing how to do the shape thing

nasty-shy [4]2 years ago

6 0

Answer:

use symbolab

Step-by-step explanation:

You might be interested in

Find the dimensions of a rectangle with perimeter 76 m whose area is as large as possible. m (smaller value) m (larger value)

Sladkaya [172]

Answer:

19 m

Step-by-step explanation:

Perimeter = 2(length + width) ; P = 2(l+w) - - (1)

Area = Length * width ; A = l*w - - - (2)

76 = 2(l+w)

76/2 = l+w

l+w = 38

l = 38 - w

Put l = 38 - w in (1)

A = (38-w)*w

A = 38w - w²

At maximum point:

dA/dw = 0

dA/dw = 38 - 2w

38 - 2w = 0

38 = 2w

w = 38/2

w = 19

5 0

2 years ago

You can write ratio in three different ways

Maru [420]

Correct the first way is 1to1, 1:1, 1 boy to 1 girl .

4 0

3 years ago

Simplify the expression 2x - 7 + 4x

bija089 [108]

Answer:

6x−7

Step-by-step explanation:

2x−7+4x

=2x+−7+4x

Combine Like Terms:

=2x+−7+4x

=(2x+4x)+(−7)

=6x+−7

3 0

3 years ago

Read 2 more answers

Is 7/10 greater or less than or equal to 2/5?

seraphim [82]

Answer:

Greater than.

Step-by-step explanation:

$\frac{2}{5} * 2 = \frac{4}{10}$

5 0

3 years ago

Read 2 more answers

Prove that for all n in the naturals, n(n+1)(n+2) is divisible by 3

DerKrebs [107]

By induction:

It's true for $n=1$ , since $1\cdot2\cdot3$ clearly contains a factor of 3.

Suppose it's true for $n=k$ , that $k(k+1)(k+2)$ is divisible by 3. Then

$(k+1)(k+2)(k+3)=\dfrac{k(k+1)(k+2)(k+3)}k=\dfrac{3m(k+3)}k$

where $m$ is an integer. This reduces to

$\dfrac{3m(k+3)}k=3m+9\dfrac mk$

and both terms are clearly multiples of 3. We know that $\dfrac mk$ is an integer since we had set $m=k(k+1)(k+2)$ previously, which implies $m$ is a multiple of $k$ . So the statement is true.

6 0

3 years ago