3 years ago

Explain how you could use the distribute property and mental math to find 5 times 198

1 answer:

5 0

Multiply 100 times 5 in your head to get 500,

100 * 5 = 500
90 * 5 = 450
8 * 5 = 40
Put those 3 together into one equation, \/
(100 * 5) + (90 * 5) + (8 * 5) = 990 OR (100 * 5) + (98 * 5) = 990
depends on how distributed the teacher wants it to be.

You might be interested in

Jody is feeding her dog from a 10-pound bag. The dog goes through 1 1/4 pounds of food each week. Enter, in decimal form, how ma

swat32

Answer:6.25 pounds left

Step-by-step explanation: 3 x 1 1/4= 3.75 pounds gone so if you add 6.25 pounds more you are at 10 pounds so

6 0

2 years ago

PLAY is a kite what is the m<PSY?<br>a.45° c.180°<br>b.90° d.360°

timurjin [86]

90° is the correct answer

3 0

2 years ago

The population of a certain country since 1990 can be approximated by f(t)=0.008t2+2.1t+175 where f(t) is the population in mill

azamat

Answer:

$\frac{f(20)-f(0)}{20-0} = \frac{220.2-175}{20} = 2.26$

Step-by-step explanation:

as with all functions f(t), the average rate of change on [a.b] is

$\frac{f(b)-f(a)}{b-a}$

6 0

3 years ago

How many 10-digit ternary strings are there that contain exactly two 0s, three 1s, and five 2s?

Svet_ta [14]

There are $\dbinom{10}2$ ways of picking 2 of the 10 available positions for a 0. 8 positions remain.

There are $\dbinom83$ ways of picking 3 of the 8 available positions for a 1. 5 positions remain, but we're filling all of them with 2s, and there's $\dbinom55=1$ way of doing that.