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3 years ago

What is the answer to: -8-(+10)?

Mathematics

1 answer:

11Alexandr11 [23.1K]3 years ago

7 0

Answer:

positive 2 or +2

Step-by-step explanation:

coz of rules if negative minus negative u must add the two number

if one is negative and the other one is positive you must subtract and copy the highest number sign

-8 - +10=2

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Help please I’m confused

kipiarov [429]

Answer:

h = 5.4

Step-by-step explanation:

Basically these are 2 similar triangles. That means:

Corresponding sides are proportional.

We can set up a ratio of each triangle separately and equate, cross multiply and solve for "h".

h corresponds to 2.4

2.9 corresponds to 1.3

Setting up the ratio and solving for h:

$\frac{h}{2.4}=\frac{2.9}{1.3}\\1.3h=2.4*2.9\\1.3h=6.96\\h=\frac{6.96}{1.3}\\h=5.35$

Rounded to 1 decimal place,

h = 5.4

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2 years ago

Sin5A/SinA-cos5A/cosA=4cos2A

irina1246 [14]

Answer:

See Explanation

Step-by-step explanation:

$\frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} = 4\cos2A \\ \\ LHS = \frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} \\ \\ = \frac{ \sin5A \:\cos A - \cos5A \: \sin A}{\sin A \:\cos A } \\ \\ = \frac{ \sin(5A -A )}{\sin A \:\cos A} \\ \\ = \frac{ \sin 4A}{\sin A \:\cos A} \\ \\ = \frac{ 2\sin 2A \: \cos 2A}{\sin A \:\cos A} \\ \\ = \frac{ 2 \times 2\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A} \\ \\ = \frac{ 4\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A} \\ \\ =4\cos 2A \\ \\ = RHS \\ \\ thus \\ \\ \frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} = 4\cos2A \\ \\ hence \: proved$

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2 years ago

Last week, Benjamin spent $82.80 on groceries and $132.48 on bills. The amount he spent on groceries

Genrish500 [490]

Answer:

amount spend on groceries = 82.80

percent spend in groceries = 15%

let total paycheck be x

15%of x= 82.80

x=552

percent spend on bills = 132.48/552 = 24%

Step-by-step explanation:

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2 years ago

PLEASE HELP ME I GIVE BRAINLIEST

mariarad [96]

Decimal Form: 11.5

Fraction Form: 11 1/2

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1 year ago

Read 2 more answers

shawn has two fields on his farm. he plants two types of corn. each field has 60 rows of cornstalks. type a grows better so ther

WINSTONCH [101]

Type a= 8x60

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b=3x60

=180

6 0

3 years ago