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3 years ago

Evaluate -3(8).

Mathematics

2 answers:

Ostrovityanka [42]3 years ago

4 0

Answer: -24

Step-by-step explanation: When you're asked to multiply

positives and negatives together, the rules are simple.

positive times a positive is a positive

positive times a negative is a negative

negative times a positive is a negative

negative times a negative is a positive

One way that I think will help you is to think

about the problem in terms of the signs.

If the signs are the same, the product will always be positive.

For example, (+3) · (+6) = +18 and (-6) · (-2) = +12.

If the signs are different, the product is negative.

So (+6) · (-4) is -24 and (-10) · (+5) is -50.

So don't get caught up on the signs.

Do the problem first, then determine if the

signs are the same or if they are different.

nadya68 [22]3 years ago

3 0

Answer:

-24

Step-by-step explanation:

-3 multiply 8 = -24

Because when ever you multiply a negative number with a positive number result will always be negative and 3 multiply 8 is 24.

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#1 $11.49 for 3 packages and fid the unit rate.round to the nearest hundredth if necessary

mote1985 [20]

If you would like to find the unit rate, you can calculate this using the following steps:

$11.49 ... 3 packages
$x = ? ... 1 package

11.49 * 1 = 3 * x
11.49 = 3 * x /3
x = 11.49 / 3
x = $3.83

The correct result would be $3.83.

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3 years ago

Read 2 more answers

The area of a rectangular rug is given by the trinomial r^2-4r-77. What are the possible dimensions of the rug? Use factoring.

Softa [21]

When you factor the equation...

r^2-4r-77

r^2+7r-11r-77

r(r+7)-11(r+7)

(r-11)(r+7) so each parenthetical term is a dimension.

Note that r>11 though for any possible real solution.

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3 years ago

At the city museum, child admission is $5.30 and adult admission is $9.20 . On Monday, 166 tickets were sold for a total sales o

Sonbull [250]

C+a=166
a=166-c
5.3c+9.2a=1254.2
5.3c+9.2(166-c)=1254.2
5.3c+1527.2-9.2c=1254.2
5.3c-9.2c=1254.2-1527.2
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Hope this helps!

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3 years ago

17) Convert the number to scientific notation 0.00317

Masteriza [31]

Answer:

3.17x10^-3

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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3 years ago

Write and solve an equation to find your final score. Use x to represent your final score.

attashe74 [19]

Let your final bowling score be x. It is 14 pins less than your friends final score. Your friends final bowling score is 105. Then x is 14 pins less than 105.
1 way: This means that 105 is greater than x by 14. Mathematically,
105-x=14,
-x=14-105,
-x=-91,
x=91.
2 way: When you add 14 to x, you'll get 105.
x+14=105,
x=105-14,
x=91.
Answer: Your final score is 91.

8 0

2 years ago