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3 years ago

8

How is place value used to model and find products when multiplying 2 digit numbers?

1 answer:

Aleksandr-060686 [28]3 years ago

6 0

Answer:

1 x 4=4 (Both numbers are in the ones place, so their value are ones.)

Step-by-step explanation

In order to use place value to multiply, we use the distributive property to break apart each place. Always begin with the ones place. We can break apart a 2-digit by 1-digit number into 2 simpler problems. 1 x 4=4 (Both numbers are in the ones place, so their value are ones.)

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Determine the ratio in which the point (–6, m) divides the join of A(–3, –1) and B(–8, 9). Also, find the value of m.

PSYCHO15rus [73]

Answer:

Ratio = 3 : 2 and value of m = 5.

Step-by-step explanation:

We are given the end points ( -3,-1 ) and ( -8,9 ) of a line and a point P = ( -6,m ) divides this line in a particular ratio.

Let us assume that it cuts the line in k : 1 ratio.

Then, the co-ordinates of P = $( \frac{-8k-3}{k+1},\frac{9k-1}{k+1} )$ .

But, $\frac{-8k-3}{k+1}$ = -6

i.e. -8k-3 = -6k-6

i.e. -2k = -3

i.e. $k = \frac{3}{2}$

So, the ratio is k : 1 i.e $\frac{3}{2} : 1$ i.e. 3 : 2.

Hence, the ratio in which P divides the line is 3 : 2.

Also, $\frac{9k-1}{k+1}$ = m where $k = \frac{3}{2}$

i.e. m = $\frac{\frac{9 \times 3}{2}-1}{\frac{3}{2}-1}$

i.e. m = $\frac{27-2}{3+2}$

i.e. m = $\frac{25}{5}$

i.e. m = 5.

Hence, the value of m is 5.

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3 years ago

Read 2 more answers

Guys what the question to this i need it ASAP

adelina 88 [10]

Answer:(8+24) divided by (12 * 4)

Step-by-step explanation: 8 + 24 = 32 and 12 * 4 = 48. 32 divided by 48 is 2/3.

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A park measures 85.5 square yards. A family rents 3/10 of that area to host a birthday party. How large is the area that the fam

motikmotik

Answer:

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Step-by-step explanation:

The area is 85.5 yd^2

He rents 3/10ths

Multiply the area by the fractional part he rents

85.5 * 3/10

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3 years ago

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kykrilka [37]

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Step-by-step explanation:

Add up everything and you get <em>41 </em>as the SA.

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frutty [35]

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Step-by-step explanation:

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