3 years ago

Steve had $10 dollar sign, 10 in his drawer. He put in an additional $5 dollar sign, 5 before his parents doubled his money.

Mathematics

2 answers:

vodomira [7]3 years ago

8 0

I’m pretty sure they are right

Mkey [24]3 years ago

3 0

Answer:

30 $ is in the drawer

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Edgar earns $13 for each hour of yard work. How many hours in all will it take Edgar to earn $39? hours

Art [367]

3 hours because 39 divided by 13 equals 3 and to check just do 13x3 and it will get you to 39. in conclusion edgar will have to do 3 hours of hard work to get $39

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3 years ago

Plz help me I don’t understand this

Firlakuza [10]

The answer should be 31/10

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Sophia exchanged 1000 U.S. dollars for the South African currency which is called the rand. The exchange rate was 8.05 rand to 1

saw5 [17]

Answer:

Sophia gets 7,150

Step-by-step explanation:

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3 years ago

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k0ka [10]

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Step-by-step explanation:

the first answer is D

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4 years ago

Given the vectors u= <2, 1> and v= <5, 4>, determine the components of a vector represented by 2u - 3v

kati45 [8]

Answer:

C.) <-11, -10>

Step-by-step explanation:

Let's define how to work with vectors.

For two vectors:

V = <a, b>

W = <c, d>

The product of a scalar k and a vector is given by:

k*V = k*<a, b> = <k*a, k*b>

And the sum (or difference) of two vectors is given by:

V ± W = <a, b> ± <c, d> = <a ± c, b ± d>

Now that we know this, we can solve the problem.

Here we have the vectors:

u = <2, 1>

v = <5, 4>

then:

2u - 3*v = 2*<2, 1> - 3*<5, 4>

= <2*2, 2*1> - <3*5, 3*4>

= <4, 2> - <15, 12>

= <4 - 15, 2 - 12>

= < -11, -10>

Then the correct option is C.

5 0

3 years ago