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3 years ago

Pleaseeeer help I’ll mark u as brainlest

Mathematics

2 answers:

Lerok [7]3 years ago

7 0

The first one because it contains millimeter measurement to give you a exact or near exact answer.

ohaa [14]3 years ago

7 0

The first one is your answer

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How does the value of the digit 4 in 3.546 compare to the value of the digit 4 in 4.23

JulijaS [17]

Answer:

the digit 4 in 3.546 is called hundredth because it is after the decimal point you add -th behind it while the digit 4 in 4.23 is called a unit

3 0

3 years ago

Camilla makes and sells jewelry. She has 8,160 silver beads and 2,880 black beads to make necklaces. Each necklace will contain

Katarina [22]

8,160 ÷ 85 = <span>96

2,880 </span>÷ 30 = 96

SO, Camilla can make 96 necklaces.

Hope I helped:P

5 0

3 years ago

Read 2 more answers

The heat developed in an electric wire varies jointly as the wires resistance, the time the current flows, & the square of t

never [62]

Answer:

4 ohms

Step-by-step explanation:

The question is "In two minutes a current of 5 amps develops 1,200 heat units in a wire of 8 ohms resistance. What resistance does a similar wire have, which develops 6,000 heat units with a current of 10 amps in 5 minutes?"

Current, I₁ = 5 A

Heat, Q₁ = 1200 units

Resistance, R₁ = 8 ohms

Time, t₁ = 2 min = 120 s

New heat, Q₂ = 6000 units

Current, I₂ = 10 A

New time, t₂ = 5 min = 300 s

We need to find the new resistance.

Heat developed is given by :

$Q=I^2Rt$

$\dfrac{Q_1}{I_1^2R_1t_1}=\dfrac{Q_2}{I_2^2R_2t_2}\\\\R_2=\dfrac{Q_2\times I_1^2R_1t_1}{Q_1I_2^2t_2}\\\\R_2=\dfrac{6000\times 5^2\times 8\times 120}{1200\times 10^2\times 300}\\\\=4\ \Omega$

So, the new resistance is 4 ohms.

5 0

2 years ago

Help me with this please I will give you brainlist!

Volgvan

Answer:

it might be D

Step-by-step explanation:

im pretty sure

4 0

2 years ago

Need help with tree diagrams

oksian1 [2.3K]

There is a 50% chance.

Explanation:

There is always a 50-50 chance that the coin will land on either heads or tails.

6 0

2 years ago