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2 years ago

I need help!!!!!!!!!

Mathematics

1 answer:

viva [34]2 years ago

6 0

I don't know this stuff
it looks really hard
I'm in 6 grade
what grade work is this
sorry but I can not help you
but one thing is for sure
I think think its the fourth one
it looks less than bla bla bla and greater than bla bla bla
people say I'm smart
its true I'm smart
but some work I don't understand
like don't get me wrong on this
this is suppose to be a app that helps people to do there work
not a app for other people to help others to do there work right
is that not true
this app just want to bla bla bla
you don't know ant to know
well it time for me to go
I'll mabey not see you again
because you'll be dead muhahahah
I'm a hacker I can hack you anytime I want muhahaha

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Help me please in geometry

weeeeeb [17]

A I think that is right

8 0

4 years ago

Write the ratio as a fraction in simplest form with whole numbers in the numerator and denominator

11Alexandr11 [23.1K]

Answer:

9/1

Step-by-step explanation:

45/5 = 9

7 0

3 years ago

The product of (a + b)(a − b) is a2 − b2. (1 point) Sometimes Always Never

jenyasd209 [6]

ANSWER

$\boxed{Always}$
EXPLANATION

The given product is

$( a - b)(a + b)$

This is always equal to

${a}^{2} - {b}^{2}$

The identity

$( a - b)(a + b) = {a}^{2} - {b}^{2}$

is called difference of two squares.

We can verify this by simply expanding the brackets using the distributive property to obtain,

$( a - b)(a + b) = a(a + b) - b(a + b)$

$( a - b)(a + b) = {a}^{2} + ab - ab- {b}^{2}$

This simplifies to

$( a - b)(a + b) = {a}^{2} - {b}^{2}$

6 0

3 years ago

Read 2 more answers

Birth weights are normally distributed with a mean of 3419 g and a standard deviation of 494 g. If a hospital plans to set up sp

Bas_tet [7]

Let X represent a random variable representing the birth weights of babies, and let x be the required cut-off, then
P(X < x) = 0.02
P(z < (x - 3419)/494) = 0.02
1 - P(z < (3419 - x)/494) = 0.02
P(z < (3419 - x)/494) = 1 - 0.02 = 0.98
(3419 - x)/469 = 2.04
3419 - x = 956.76
x = 3419 - 956.76 = 2462.24

Therefore, the weight to be used as cut-off is 2462.24 g

3 0

3 years ago

Find the squares of (y+3)

emmasim [6.3K]

Answer:

Since we know that

(a+b)

+2ab+b

(a−b)

−2ab+b

Now,

(i)

(x+3y)

+2×x×3y+(3y)

+6xy+9y

(ii)

(2x−5y)

=(2x)

−2×2x×5y+(5y)

=4x

−20xy+25y

(iii)

(a+

)

+2×a×

)

+1+

(iv)

(2a−1a)=(1a)

(1a)

=1a

Answer

8 0

3 years ago