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2 years ago

4. John wants to cover a box entirely with silver paper. How many square centimetres

Mathematics

2 answers:

Mice21 [21]2 years ago

7 0

Answer: 4=C. 4 164 sq cm

5=A. 5.0 sq dm

6=B. 272.6 sq dm

HOPE THIS HELPS

Bess [88]2 years ago

4 0

Answer:

l=22cm

b:16cm

h:10cm

surface area =2(lb+bh+lh)=2(22*16+16*10+22*10)

=1464cm²

a=2.5dm

area cubical soda cracker box=6a²=6*2.5²=37.5dm²

r=1.5dm

area of ball=4πr²=4π×1.5²=28.27dm² per ball

for 10 bal =28.27×10=282.6dm²

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Us the expression (8x + 2) + (- 9x + 7)

malfutka [58]

Answer:

8x2=16 9x7=63

63+16=79

Step-by-step explanation:

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2 years ago

A robotic machine fills containers with an acid solution at the rate of 50 + 5 t milliliters (mL) per second, where t is in seco

Alika [10]

Answer:

12,000

Step-by-step explanation:

The machine fills the containers at a rate of 50+5t milliliters (mL) per second.

Therefore, the rate of change of the number of containers, N is:

$\dfrac{dN}{dt}=50+5t, 0\leq t\leq 60$

$dN=(50+5t)dt\\$Taking integrals of both sides\\\int dN=\int (50+5t)dt\\N(t)=50t+\frac{5t^2}{2}+C $(C a constant of integration)\\\\When t=0, , No containers are filled, therefore:$ N(t)=0\\0=50(0)+\frac{5(0)^2}{2}+C\\C=0\\$Therefore, N(t)=50t+2.5t^2$

When t=60 seconds

$N(60)=50(60)+2.5(60)^2\\N(60)=12000$ mL$

Therefore, 12,000 milliliters of acid solution are put into a container in 60 seconds.

7 0

2 years ago

Adam is going to cook a turkey for 14 people and wants to allow ¾ lb of turkey for each person.

Kobotan [32]

Missing info:
Turkey Sizes:
small - 2kg - 3.9kg 
medium - 4kg - 5.4kg 
large - 5.5kg - 7.2kg 
extra large - 7.3kg - 9.2kg 

Turkey Prices: 
Small / Medium - £5.99 per kg 
Large / Extra Large - £4.99 per kg

3/4 lb x 14 persons = (3*14)/4 = 42/4 = 10.5 lbs

1 lb = 450 grams

10.5 lbs * 450grams/lb = 4,725 grams

1 kg = 1000 grams

4,725 grams * 1kg/1000 grams = 4725 kg / 1000 = 4.725 kg.

4.725 kg is under the Medium size of the Turkey.

Medium sized turkey costs £5.99 per kg.

4.725 kg * £5.99 per kg = £28.30

A turkey would cost £28.30 for 14 people.

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3 years ago

Which expression is equivalent to 6√8 · √2 48√2 48 24 24√2

NikAS [45]

I think the answer is C. 24

Explanation:

Square root of 8 times square root of 2 is square root of 16. The square root of 16 is 4. 6•4=24

Brainliest my answer if it helps you out?

3 0

3 years ago

What’s the answer to this

ss7ja [257]

Answer:

I think D

Step-by-step explanation:

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2 years ago