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3 years ago

What is 3.82 to the nearest whole number

Mathematics

2 answers:

padilas [110]3 years ago

7 0

Answer:

It would be 4

Step-by-step explanation:

3.82 would be closer to 4 then to 3 if you were to put it on a number line.

Klio2033 [76]3 years ago

6 0

4 !!! Since you round up

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Which expression is equivalent to (7 + 2i)(-3 - 4i)?

malfutka [58]

B -13 -34i

(7 + 2i)(-3 - 4i)
Take the 7 then times it buy the second bracket 7x(-3-4i) then take 2i from the first bracket and times it with the second bracket 2ix (-3-4i)

Then keep simplifying

5 0

2 years ago

To replace a number with another number that tells how many or how much

Papessa [141]

It's subtraction or multiplacation

8 0

3 years ago

Can someone explain or help me out

Akimi4 [234]

Answer:

The bird has to fly 7.5 m

Step-by-step explanation:

Please see diagram in attached image.

Notice that there is a right angle triangle that defines the situation, and you know two elements of such triangle;

1) one acute angle ( $15^o$ ), and

2) the side opposite to that angle.

What you need to find is the side adjacent to the angle, which is what the bird needs to fly horizontally to be above the fish. We named that "x".

The trig function that relates such triangle elements is the tangent:

$tan(\theta)=\frac{opposite}{adjacent} \\tan(15^o)=\frac{2\,m}{x} \\x=\frac{2\,m}{tan(15^o)} \\x=7.46 \,\,m$

which rounded to the nearest tenth is: 7.5 m

8 0

3 years ago

Your coach said to spin no less than 27 minutes practicing each day if you practice for 9 in the morning how many more minutes d

Fudgin [204]

Answer:

Step-by-step explanation:

first find the total 27min then you find the amount he already practiced 9min. now you have everything you need. if you here, how many more, it usually means subtract. so 27-9=D is the formulated answer

8 0

2 years ago

The table shows the battery life of four different mobile phones:

Pie

Answer:

A 20

Step-by-step explanation:

Given

Phone Battery Life (hours)

A 20

B 25

C 10

D 18

8.45% of the battery life of each mobile phone is used in a day by a typical user

Calculating Hours of battery life in a day for each mobile

A 20

Battery life for A = $\frac{8.45}{100}\times 20 = 1.69$ hours

B 25

Battery life for B = $\frac{8.45}{100}\times 25 = 2.11$ hours

C 10

Battery life for C = $\frac{8.45}{100}\times 10 = 0.845$ hours

D 18

Battery life for D = $\frac{8.45}{100}\times 18 = 1.52$ hours

Therefor Mobile phone A 20 uses a total of 1.69 hours of battery life in a day

4 0

3 years ago