4 years ago

I need help! Help a 6th Grader out! Please Asap!

Mathematics

1 answer:

natali 33 [55]4 years ago

5 0

There isn’t no question to answer

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(-3y3-5y-2)+(-7y2+5y+2)

Slav-nsk [51]

Answer:

=-23y

Step-by-step explanation:

(-3y3-5y-2)+(-7y2+5y+2)

=-3yX3-5y-2-7yX2+5y+2

=-3X3y-5y-7X2y+5y-2+2

=-3X3y-7X2y-2+2

=-9y-7X2y-2+2

=-9y-14y-2+2

=-23y-2+2

=-23y

I hope this helps!

4 0

3 years ago

Read 2 more answers

Y=3x write in form of ax+b

rosijanka [135]

Y=3X+0

It is already in the y= mx+b form.

4 0

3 years ago

Jackie has fewer than 20 h to work on her jewelry. It takes her half an hour to make a necklace and an hour to make a bracelet.

aivan3 [116]

Question 1.

(Jackie)

0.5x+y<20

y≥2x

x≥0

8 0

4 years ago

I have one dozen eggs and I discover hot only 1/3 of the broken and I need use 1/6 how many I have left

zhenek [66]

Answer:

$X=2$

Step-by-step explanation:

From the question we are told that:

Total eggs $n=12$

Broken eggs $n_b=1/3n=4$

Used eggs $n_u=1/6n=2$

Generally the equation for amount of eggs left X is mathematically given by

$12=X+n_b+n_u$

$12=X+4+2$

$X=\frac{12}{6}$

$X=2$

6 0

4 years ago

The temperature of a piece of Metal X with a mass of 95.4g increases from 25.0°C to 48.0°C as the metal absorbs 849 J of heat. W

Nataly_w [17]

Answer:

c = 0.38 J/g °C

Step-by-step explanation:

We have,

Mass of metal X is 95.4 g

Initial temperature was 25°C and final temperature is 48°C.

The metal absorbs 849 J of heat

The heat absorbed due to change in temperature is given by :

$Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{849}{95.4\times (48-25)}\\\\c= 0.38\ J/g^{\circ} C$

So, the specific heat of metal X is 0.38 J/g °C.

6 0

3 years ago