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3 years ago

PLZZZ HELP ME IT WILL BE QUICK

Mathematics

1 answer:

sineoko [7]3 years ago

4 0

Answer:

2i x 1.50b

Step-by-step explanation:

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Simplify: (–4) • (9) – (5) • (–2) A)2 B)–36 C)–26 D)82

lapo4ka [179]

Using the correct order of operations, your equation would simplify as:
-36 - 10 = -26

7 0

3 years ago

Please help I have spent hours trying to do...

Igoryamba

Answer:

914.4 mm
0.0479594 km

Step-by-step explanation:

For units conversion, use a conversion factor ratio with the units you do want in the numerator and the units you don't want in the denominator. The numbers in the numerator and denominator give the ratio a value of 1: the numerator is equal to the denominator--just in different units.

1. For feet to mm, you need a couple of additional conversion factors besides the ones shown:

1 foot = 12 in

1 cm = 10 mm

So, the conversion is ...

$(3\text{ ft})\times\dfrac{12\text{ in}}{1\text{ ft}}\times\dfrac{2.54\text{ cm}}{1\text{ in}}\times\dfrac{10\text{ mm}}{1\text{ cm}}=3\times12\times2.54\times10\text{ mm}\\\\=\boxed{914.4\text{ mm}}$

2. The additional factor you need for this problem is ...

1 mile = 5280 feet

So, the conversion is ...

$(157\text{ ft})\times\dfrac{1\text{ mi}}{5280\text{ ft}}\times\dfrac{1\text{ km}}{0.62\text{ mi}}=\dfrac{157}{5280\times0.62}\text{ km}\\\\\approx\boxed{0.0479594\text{ km}}$

_____

Additional comment

You can use Google to do units conversion by typing "3 feet to mm" or "157 feet to km". However, the conversion factor for the latter will be more exact than the one given in this problem. Hence the Google answer to the second question will not be applicable here.

7 0

3 years ago

Given the midpoint and one endpoint find the other endpoint. Endpoint (2,-9) Midpoint (-2,-1)

AfilCa [17]

Answer:

Step-by-step explanation:

(x + 2)/2 = -2

x + 2 = -4

x = -6

(y + (-9))/2 = -1

y - 9 = -2

y = 7

(-6, 7)

answer is C

6 0

3 years ago

Divide using a common factor of 3 to find an equivalent fraction for

kupik [55]

Answer:

3/4 is equivalent to 9/12,

Step-by-step explanation:

So we know that 3/4 is equivalent to 9/12, because 3×12=36 and 4×9=36. A simple way to look at how to check for equivalent fractions is to do what is called “cross-multiply”, which means multiple the numerator of one fraction by the denominator of the other fraction.

4 0

3 years ago

Read 2 more answers

The actual length of a machine is 12.25cm , the measured length 12.2cm find the Absolute error .

NeX [460]

Answer:

Absolute error is 0.05 cm.

Step-by-step explanation:

Given:

Actual length = 12.25 cm

Measured length = 12.2 cm

We need to find Absolute error.

Solution:

Now we can say that;

Absolute error is equal to measured length minus Actual actual.

framing in equation form we get;

Absolute error = $|Measured\ length - Actual\ length|= |12.2-12.25| = |-0.05|$

Hence Absolute error is 0.05 cm.

6 0

4 years ago