4 years ago

In which line did the student make the first mistake? (4 points)

Mathematics

1 answer:

Luba_88 [7]4 years ago

7 0

There is no way to answer this without more information available

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Find the value of two numbers if their sum is 16 and their difference is 2.4

Verdich [7]

Lets x and y are the value of two numbers.

x + y = 16

x - y = 2.4

If x + y = 16 then x = 16 - y

Substitute x = 16 - y into x - y = 2.4

16 - y - y = 2.4

16 - 2y = 2.4

2y = 13.6

y = 6.8

x = 16 - y

x = 16 - 6.8

x = 9.2

Answer:

The value of two numbers are 9.2 and 6.8

7 0

3 years ago

1. At the school bookstore, Harrison purchases 3 notebooks for $2.50 each, 10 pens for $0.35 each, and 5 mechanical pencils for

Artemon [7]

Find cost of pens and mechanical pencils

pen cost=number of pens times cost pe pen
pencost=10 times 0.35=3.50

mech cost=number of mechs times cost pe mech
mechcost=5 times 0.89=4.45

4.45 is more than 3.50
yes, mech cost mre than pens

8 0

3 years ago

mr burns class is taking a field trip to the planetarium. The trip will cost $27 for each student. There are 18 students in his

avanturin [10]

So, 27=30 and 18=20 rounded

so what you would do now is multiply 30 x 20 and you get $600

3 0

4 years ago

Read 2 more answers

Can you guys answer this ?

nika2105 [10]

Answer:

-7

...................

7 0

3 years ago

Read 2 more answers

The blank of a number says how many times to use that number ia a multiplication

Evgesh-ka [11]

I'm pretty sure the answer is exponent since it tells you how many times to multiply the number beside it by itself.

Example:

${3}^{4}$
It is NOT 3 × 4 = 12

It is 3 × 3 × 3 × 3 = 9 × 3 × 3 = 9 × 9 = 81

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey

4 0

3 years ago