Ask question

Ask question

All categories

3 years ago

14

-27+9-3+1 using sigma notation

1 answer:

Vesna [10]3 years ago

4 0

Do you have question choices if not then I'll try I guess...... -27+9-3+1 36-3+1 3

You might be interested in

Two friends leave their houses at the same time and run across town towards each other. The first friend runs at a speed of 8 mi

GalinKa [24]

2 and a half hours estimate

5 0

3 years ago

Read 2 more answers

A survey claims that 9 out of 10 doctors recommend aspirin for their patients with headaches. to test this claim against the alt

sineoko [7]

I think you should try on your own

8 0

3 years ago

Read 2 more answers

Factorize 2a^2+7a-15

loris [4]

$\huge\bf \pink {\underline{Solution :-}}$

$2 {a}^{2} + 7a - 15$

$= 2 {a}^{2} + 10a - 3a - 15$

$= 2a(a + 5) - 3(a + 5)$

$= (a + 5)(2a - 3)$

$\sf \red{Hence, Answer \: is \: (a + 5)(2a - 3).}$

$\\$

$\bf \purple{ \underline{ Important \: Formulas \: for \: Factorization :-}}$

$• \: {a}^{2} + 2ab + {b}^{2} = {(a + b)}^{2}$

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

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

$• \: {a}^{3} + 3 {a}^{2} b + 3a {b}^{2} + {b}^{3} = {(a + b)}^{3}$

$• \: {a}^{3} - 3 {a}^{2} b + 3a {b}^{2} - {b}^{3} = {(a - b)}^{3}$

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

$• \: {(a + b)}^{2} - {(a - b)}^{2} = 4ab$

$• \: (a + b)( {a}^{2} -ab + {b}^{2} ) = {a}^{3} + {b}^{3}$

$• \: (a - b)( {a}^{2} + ab + {b}^{2} ) = {a}^{3} - {b}^{3}$

$• \: {( \frac{a + b}{2} )}^{2} - ( {\frac{a - b}{2} } )^{2} = ab$

5 0

3 years ago

Read 2 more answers

How do I solve this question I don’t know how to do it at all

ICE Princess25 [194]

Answer:

x = 5.2

Step-by-step explanation:

See the diagram first.

We know that in a triangle if we draw a line parallel to the baseline then it will divide the other two lines of the triangle in the same ratio.

Therefore, from the given figure it is clear that $\frac{x}{13-x} = \frac{2}{3}$

⇒ 3x = 26 - 2x

⇒ 5x = 26

⇒ x = 5.2 (Answer)

4 0

3 years ago

WHAT IS ANOTHER WAY TO WRITE 6%

Rufina [12.5K]

Answer:

3/50 or 0.06

Step-by-step explanation:

6/100=3/50

6/100=0.06

4 0

3 years ago

Read 2 more answers