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Romashka-Z-Leto [24]

3 years ago

15

Help me plz due today

1 answer:

kirill115 [55]3 years ago

6 0

Answer:

The coefficients are 4 and 2

Step-by-step explanation:

they are the ones in front of the variables

for example, the coefficient of 12x is 12

anyways, stan tokoroki for clear skin

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Solve for m .2m+4.34-m=2.3

alina1380 [7]

Answer:

2m + 4.34 - m = 2.3

Group like terms

2m - m + 4.34 = 2.3

Transpose

2m - m = 2.3 - 4.34

Evaluate

m = -2.04

M is -2.04

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3 years ago

Which of the following combinations cannot be the side lengths of a triangle?

Neporo4naja [7]

The sum of the two short legs must be at least as long as the longest leg.

This requirement for a triangle is NOT met by the 2nd selection. Those lengths cannot be a triangle.

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3 years ago

Diagram shows the composite solid formed by a cuboid and a right prism. Trapezium LMNP is the uniform cross section of the prism

kherson [118]

Answer:

MN = 7 cm

Step-by-step explanation:

Well the volume we can separate into pieces

first the ABCDEFGH (? you know this cuboid)

which has a volume of

$V = AB\cdot BC\cdot CH\\\\V = 3*6*(3+JY+4)$

if you ask where does the 4 come from

it comes from LP = KB = YC and JY + YC =JC

so

$V = 18(7+MX)$

this is because JY = MX

the other volume is of BCNPKLXY (hope you understand which one)

and the volume is

$V = BP*PN*NX\\\\V=8*6*4\\\\V = 192$

and the last one is KYXLMJ (the top "triangle")

the volume is

$V = \frac{LX*XM}{2}*LK\\\\V = \frac{6*MX}{2}*8\\\\V= 6*4*MX\\\\V=24MX$

so now add them up

and has to equal 444

$V_T = 18(7+MX)+192+24MX\\\\V_T = 126+18MX+192+24MX\\\\V_T = 318+42MX\\\\444=318+42MX\\\\444-318=42MX\\\\126=42MX\\\\MX = 3$

and finally we know that MN = MX + XN = 3+4 = 7

so here is our answer MN = 7 cm

a couple of notes

$1.\:\angle LXM = 90\\\\2.\:\angle KYX = 90$

3. the units don't matter due to the fact that everything is in cm

4. see the picture below to get a better idea of which prism I am talking of

5. tell me if you have questions :D

8 0

3 years ago

The sum of two numbers is 21. the second number is six times the first number . Work out the two numbers

jeyben [28]

Answer:

3 and 6

Step-by-step explanation:

3*6=18

18+3=21

7 0

3 years ago