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djverab [1.8K]
1 year ago
15

Perform the calculation then

Mathematics
2 answers:
Andru [333]1 year ago
5 0

Answer:

416 (3 s.f.)

Step-by-step explanation:

To multiply decimals, begin by multiplying the numbers as if there is <u>no decimal</u>:

\large\begin{array}{cccccc}&& 1 & 2 & 8 & 5\\\times && & 3 &2 & 4\\\cline{1-6} && 5 & 1 & 4 & 0\\&2&5&7&0&0\\3&8&5&5&0&0\\\cline{1-6}4&1&6&3&4&0\\\cline{1-6}^1&^1&^1&&\phantom{^{\frac{1}{2}}}&\end{array}

Count the number of digits <u>after</u> the decimal point in each factor:

  • 128.5 → 1 digit after the decimal point.
  • 3.24 → 2 digits after the decimal point.

Therefore, there is a total of 3 digits after the decimal points.

Put the same number of digits after the decimal point in the product.

Therefore, the solution is to the multiplication is:

  • 416.340

The factor with the <u>fewest signification figures</u> is 3.24.

This number has 3 significant figures.

Therefore, the solution to 3 significant figures is:

  • 416 (3 s.f.)
Sladkaya [172]1 year ago
3 0

Answer: 416.34

Step-by-step explanation:

128.5

⋅

3.24

Multiply using long multiplication.

128.5×3.24

To find the number of decimal places needed in the answer, add the number of decimal places in the multiplier and multiplicand. In this case, there is a total of

3

, so the answer must have

3

decimal places as well.

416.34

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Alecsey [184]
1200, (2)3+(2)2+2 = 6+4+2 = 12 12(100)= 1200
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3 years ago
Which three of the following expenses can student aid cover? tuition television school supplies parties and socializing boarding
Hitman42 [59]

The tuition, school supplies, and boarding/housing for the expenses can student aid cover.

<h3>What is decision-making?</h3>

The process of making choice is by identifying the correct decision, gathering information, and assessing alternative solutions.

The following expenses can student aid cover.

A.  Tuition - A student aid cover can be utilized to promote the tuition.

B.  Television - There is no use of the student aid cover for selling the TV.

C.  School supplies - We can use the face of the topper on the school supplies to promote schooling.

D.  Parties and socializing - There is no need for student aid cover for parties and socializing.

E.  Boarding or housing - We can use student aid cover to promote the hostel for the student.

More about the decision-making link is given below.

brainly.com/question/3369578

5 0
2 years ago
How do you earn $120 from his job yesterday. Today he expects to earn 15% less than yesterday and tomorrow he expects to earn 15
Ilya [14]
They took tax from his work
5 0
3 years ago
Write your answer as a decimal or whole number.<br><br> ___% of $75=$42
Basile [38]

Answer:

x=56

Step-by-step explanation:

\frac{x}{100} · \frac{42}{75}

then cross multiply

4200=75x

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3 0
3 years ago
The rational number lies between −67/7 and−78/8
zheka24 [161]

9514 1404 393

Answer:

   -135/14

Step-by-step explanation:

There are an infinite number of rational numbers between any pair of numbers you name. These two number have the decimal values ...

  -67/7 = -9 4/7 = -9.571428... (repeating)

  -78/8 = -9 3/4 = -9.75

So, numbers like -9.6 = -48/5, or -9.7 = -97/10 are rational numbers that lie in the range you specified.

If you like, you can convert these numbers to ones with a common denominator (56).

 -67/7 = -536/56

 -78/8 = -546/56

These limits suggest several possible rational numbers with 56 as a denominator: -540/56 = -135/14, for example.

7 0
2 years ago
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