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3 years ago

Find the value of the expression 3m2 + 2p2 − 15 when m = 3 and p = 10.

Mathematics

2 answers:

photoshop1234 [79]3 years ago

6 0

The answer would be 212 :)

Marianna [84]3 years ago

3 0

Answer:

212

Step-by-step explanation:

The given expression is $3m^2+2p^2-15$

Substituting m = 3 and p = 10 in the expression

$3(3)^2+2(10)^2-15$

Now, simplify this expression

$3\times9+2\times100-15\\\\=27+200-15\\\\=227-15\\\\=212$

Therefore, the value of the expression is 212.

Third option is correct.

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(1) a) 5270 cl= ? dal

Ivanshal [37]

Answer:

Check below

Step-by-step explanation:

1) These metric volume units can be easily converted by dividing or multiplying by 10 and its multiple. Like this: each step up on the ladder multiply by 10. Each step down divide by 10

$a)5270 \:cl=527\:dl\\b)kl=5.3 \times 10=530 hl\\c)58000ml=5.8 dal =(\frac{58000}{10000})\\d)0.39 dal=3.9 l\\e)7.8 dal=780 dl\\f)57.2 ml=5.72 cl$ .

2) When it comes to area, the "ladder scheme" remains valid but now we'll multiply or divide by

$10^3$

Bear in mind these useful relations:

$1litre =\frac{1}{10^3}m^{3}$

$1 cm^{3} =1 ml$

$a) 3.7 l=3700 cm^{3}\\b)29.6 dm^{3}\\29.6 dm^{3} \rightarrow 29.6\times10^{3} cm^3=29.6\times10^{3} ml = 29.6\times10^{2} cl \:or\:2960 cl\\c)8.1l=8100 cm^{3}\\d)5l=\frac{5}{10^{-3}} m^{3}\\e)5.2 cl=52ml=52 cm^{3}=52\times10^{3}=52000 \:mm^{3}\\f)375 ml=375 cm^{3}\\g) 1300 cm^{3}=1300 ml=13 dl\\h) 8.6 ml= 8.6 cm^{3}\times\: 10^{3}=8600 mm^{3}\\i) 51.8\times 10^{11} l \rightarrow 51.8\times 10^{-11}km^{3}$

6 0

3 years ago

Rachel is packing up her room to move to a new city.Together,all the books on her bookshelf weigh 85 pounds.She wants to divide

attashe74 [19]

Answer:

21.25

Step-by-step explanation:

85/4 = 80/4+5/4 = 20 + 1 + 1/4 = 21 + 0.25 = 21.25

3 0

3 years ago

Please help me branniest <br> Explain answers

Nana76 [90]

when a number is raised to two powers, the first step is to multiply the two powers together:

1/3 * 3 = 1

Now you have 5^1 which equals 5.

The answer is B. 5

7 0

3 years ago

A storage container is rectangular and has a length of 15ft and a width of 4ft. It will hold 270 cubic feet of materials. What i

KonstantinChe [14]

Volume of a rectangular prism = l × w × h.

In this case,

V = 270 cubic feet

l = 15 feet

w = 4 ft

h = ?

Plug our values into the volume formula.

270 cubic feet = 15 feet × 4 feet × h.

Simplify the right side

270 = 60 × h.

Divide each side by 60.

4.5 = h

The height is 4.5 feet.

5 0

3 years ago

Math math math!!!! :/

vekshin1

the answer is B your welcome

6 0

3 years ago

Read 2 more answers