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3 years ago

Which of these units is a part of both u.s. and metric systems A. Second B. Ounce C. Meter D.kilogram

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

4 0

A. Second would be both u.s. and metric systems..

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A student has 10 coins in her pocket that have a value of $0.85. The coins are either

il63 [147K]

Answer:

$\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.$

Step-by-step explanation:

<u>System of Equations</u>

Let's call:

x = number of nickels in the student's pocket

y = number of dimes in the student's pocket

Each nickel has a value of $0.05, so x nickels have a value of 0.05x

Each dime has a value of $0.10, so y dimes have a value of 0.10y

The student has a total of 10 coins, thus:

$x+y=10$

The total value of the coins is $0.85, thus

$0.05x+0.10y=0.85$

The system of linear equations that represents this scenario is:

$\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.$

5 0

2 years ago

Please solve it for me!! The answer is 97.3cm

Arada [10]

Answer:

which class do you read now?

5 0

3 years ago

Read 2 more answers

Answer?350x+22,000=410x+16,000 true?

tekilochka [14]

Answer:

x=100 if im correct

Step-by-step explanation:

3 0

3 years ago

In ΔDEF, the measure of ∠F=90°, the measure of ∠D=66°, and EF = 32 feet. Find the length of FD to the nearest tenth of a foot.

Butoxors [25]

Answer:

14.2 ft

Step-by-step explanation:

tan 66° = 32/ FD

FD = 32 / tan 66° = 32 / 2.246 = 14.2

7 0

3 years ago

Please help me need help me please please help me

Reil [10]

9514 1404 393

Answer:

(3) y = (x -3)²

Step-by-step explanation:

Try the first value of x in each function:

(1) y = 3² -3 ≠ 0

(2) y = (3 +3)² ≠ 0

(3) y = (3 -3)² = 0 . . . . . . matches the table value for f(3)

(4) y = 3² +3 ≠ 0

The only viable choice is (3).

5 0

2 years ago