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1 year ago

Help im so confused!!! Evaluate m + n – l when m = –8, n = 2, and l = –3. –9 –3 –1 7

Mathematics

1 answer:

Veseljchak [2.6K]1 year ago

4 0

Answer: -38

Step-by-step explanation:

First, plug in the numbers.

-8 +2 -3-9-3-17

Then solve.

-38

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Simplify and express the result in power notation with positive exponent

Molodets [167]

Answer:

3²

Step-by-step explanation:

Given expression:

$\sf (3^{-3} \div 3^{-10}) \times 3^{-5}$

Following the <u>order of operations</u>, carry out the calculations inside the parentheses first.

$\textsf{Apply the quotient exponent rule} \quad a^b \div a^c=a^{b-c}:$

$\implies \sf 3^{-3-(-10)} \times 3^{-5}$

$\implies \sf 3^{-3+10} \times 3^{-5}$

$\implies \sf 3^{7} \times 3^{-5}$

$\textsf{Apply the product exponent rule} \quad a^b \times a^c=a^{b+c}:$

$\sf \implies 3^{7+(-5)}$

$\sf \implies 3^{7-5}$

$\sf \implies 3^2$

Learn more about exponent rules here:

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4 0

1 year ago

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paris run 3 1/2 laps around the circular track in the school gym. The track has a diameter of 1/2 mile. About how far does paris

fiasKO [112]

Answer:

5.497787144 miles

Step-by-step explanation:

Remember that circumference of a circle can be calculated with:

$2\pi r$

r=radius

We also know that the radius is just a half of the diameter.

So, the radius of the track is (1/2)/2=1/4 miles

Now, use the circumference of a circle formula to find how much she runs in 1 lap.

$2\pi (\frac{1}{4} )$

Simplify

$\frac{\pi }{2}$

This is how much she runs in 1 lap.

Multiply by 3.5 for 3 and a half laps.

$\frac{\pi }{2}*3.5$

The answer is around 5.497787144 miles.

7 0

2 years ago

942 ÷ 7 = ? A. 134 R4 B. 136 C. 134 R2 D. 133 R1

zimovet [89]

Answer:

Step-by-step explanation:

134

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2 years ago

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GIVING OUT BRAINLIEST ANSWER !! PLS HELP ME OUT !! (last minute)

Dima020 [189]

Answer:

.764

Step-by-step explanation:

do it on a calculator (TI84)

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2 years ago

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simplify negative 3 and 1 over 9 − negative 8 and 1 over 3. negative 11 and 1 over 12 negative 5 and 2 over 9 5 and 2 over 9 11

garri49 [273]

-3 1/9 - (-8 1/3) = -3 1/9 + 8 1/3 = 5 2/9

5 0

2 years ago