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3 years ago

3-2(1+2)? 1 (1+2) 1+2 3

Mathematics

2 answers:

drek231 [11]3 years ago

4 0

Answer:

your method is wrong, final answer should be -3

Step-by-step explanation:

symbols are used in the order of bracket first, then multiplication and division, then addition and subtraction

i.e.

3 - 2(1 + 2)

= 3 - 2(3)

= 3 - 6

= -3

tekilochka [14]3 years ago

3 0

Answer:

What? Can you be more specific?

Step-by-step explanation:

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Solve the equation:<br><br> 15x11+(29x42)=?

Katyanochek1 [597]

Answer:

1,383

Step-by-step explanation:

15x11+(29x42)

165 + (1,218)

= 1,383

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3 years ago

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Read the top and answer 100 points

77julia77 [94]

Answer:

1)30.1029995664

2)69.2980392812

3)168.080670083

4)(3x/3=13/3

x=4.33333333333

5)5x-(5000)=0

5x=5000

x=5000/5

x=1000

6)(2)3(x+2)=(6000)=0

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3 years ago

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LMN is a right-angle triangle. Angle NLM=90. PQ is parallel to LM. The area of triangle PNQ is 8cm^2. The area of triangle LPQ i

likoan [24]

Answer:

The area of LQM is $48cm^2$

Step-by-step explanation:

Given

Area of PNQ = 8

Area of LPQ = 16

See attachment for triangles

The area of PNQ is calculated as:

$Area = \frac{1}{2} * PQ * PN$

Substitute 8 for Area

$8 = \frac{1}{2} * PQ * PN$

$PQ * PN = 16$

The area of LPQ is calculated as:

$Area = \frac{1}{2} * PQ * LP$

Substitute 16 for Area

$16= \frac{1}{2} * PQ * LP$

From the attachment:

$PN + LP =LN$

Make LP the subject

$LP = LN -PN$

So:

$16= \frac{1}{2} * PQ * (LN -PN)$

We have:

$16= \frac{1}{2} * PQ * (LN -PN)$ and $PQ * PN = 16$

Equate both expressions:

$\frac{1}{2} * PQ *(LN - PN) = PQ * PN$

Divide both sides by PQ

$\frac{1}{2} (LN - PN) = PN$

Multiply both sides by 2

$LN - PN = 2PN$

$LN= 3PN$

Since PNQ is similar to LNM, the following equivalent ratios exist:

$\frac{LM}{PQ} = \frac{LN}{PN}$

Substitute $LN= 3PN$

$\frac{LM}{PQ} = \frac{3PN}{PN}$

$\frac{LM}{PQ} = 3$

$LM = 3PQ$

Area of LQM is:

$Area = \frac{1}{2} * LM * LP$

This gives:

$Area = \frac{1}{2} * 3PQ * LP$

$Area = 3 *\frac{1}{2} *PQ * LP$

Recall that:

$16= \frac{1}{2} * PQ * LP$

So:

$Area = 3 *16$

$Area = 48cm^2$

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3 years ago

An electrician charges $130 for a house call and $90 for each hour of work. How much will they charge for 7 hours of

babymother [125]

Answer:

Hope it helps

Step-by-step explanation:

Electricians usually charge between $50 to $100 per hour. For the entire project, you'll spend an average of $323, or within a range between $160 and $508 or more. Both hourly and project rates vary depending on the type of project, license and experience of the service provider.

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Best apps for math and science and english anyone of them you have plzzzz.

Maurinko [17]

Answer:

Try khan academy! It’s free and is really good. Has subjects from k-g12!

Step-by-step explanation:

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3 years ago

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