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2 years ago

you have 3 times as many pencils as your friend , if you have 21 pencils how many does your friend have ?

Mathematics

2 answers:

Fofino [41]2 years ago

8 0

Answer:

Step-by-step explanation:

zysi [14]2 years ago

8 0

7.
this is because 21 divided by 3 is 7.

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HELP PLEASE.........

sleet_krkn [62]

Answer: $\bold{\dfrac{41}{80}}$

<u>Step-by-step explanation:</u>

$\dfrac{puppies}{total}+\dfrac{kittens}{total}+\dfrac{unicorns}{total}\\\\\\=\dfrac{15}{80}+\dfrac{16}{80}+\dfrac{10}{80}\\\\\\=\large\boxed{\dfrac{41}{80}}$

5 0

3 years ago

a country will produce 3000 missels this year. each of the short range missles costs $200,000 to produce. Each of the medium ran

guapka [62]

Answer:

Step-by-step explanation:

3000/10=300 300=10% of total missiles

300*3=900(30%) That country (assuming it is Iran) would produce 900 short missiles and 900 medium missiles. 3000-900(2)=3000-1800=1200.

Iran will produce 1200 long range missiles.

For the cost of the missiles,

200,000*900=180,000,000. 300,000*900=270,000,000.

870M-(180M+270M)=870M-450M=420M

420,000,000/1200=350,000.

Long Range Missiles are $350,000 each... got me thinkin bout buying some...

5 0

3 years ago

Please help me on this one i need it

sergiy2304 [10]

Sophia is more correct in her solution.

7 0

3 years ago

Evaluate the expression:<br><br> x^2+2x−xy when x = 250 and y = −120

NikAS [45]

Answer:

33000

Step-by-step explanation:

Substituting 250 for x and -120 for y, we get:

(250)^2 + 2(250) - (250)(120) = 62500 + 500 - 30000, or

32500 + 500, or 33000

5 0

3 years ago

Help please...........

ElenaW [278]

Parallel lines always have the same slope. In fact that is the definition of parallel lines :P (Technically they have the same slope and different y-intercepts, because parallel lines can never intersect...)

D

7 0

3 years ago