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Natali5045456 [20]
3 years ago
5

Explain how modeling partial products cans be used to find products of greater numbers

Mathematics
1 answer:
frozen [14]3 years ago
7 0
It is easier to multiply. For example: 63 multiply by 7
63 x 7 = (60+3) x 7 =  60 x 7 + 3 x 7 =  420 + 21  =  441

Another example : 25 x 73
25 x 73 = (20+5) x (70+3) = 20 x 70 + 20x3 + 5x70 + 5x3

                                         = 1400 + 60 + 350 + 15           =  1875

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True or false:<br> the following equation is in standard form. <br> (x - 4.2)^2 - 3 = 0
natita [175]

Answer:

false

Step-by-step explanation:

standard form cannot contain fractions or decimals

3 0
2 years ago
The distribution of the weights ofloaves of bread from a certain bakery follow approximately a normaldistribution. Based on a ve
slega [8]

Answer:

D)

Step-by-step explanation:

ASSUMING NORMAL DISTRIBUTION, LESS THAN 10% AT LOWER END

OF 15.34 MEANS     [DENOTING MEAN BY M AND Standard Deviation. BY S]

M±AS=20%....................M-AS=15.34

FOR 20% LEVEL .......A=1.281........FROM TABLES

M-1.281×S=15.34............................1

SIMILARLY

M±BS=40%...................M+BS=16.31

FOR 40% LEVEL .............B=0.841...................FROM TABLES

M+0.841×S=16.31.............................2

EQN.2 - EQN.1

2.122×S=0.97

S=0.457=0.46

M=15.926= 15.93

HENCE, D IS THE ANSWER

that is D. μ = 15.93, σ =.46

8 0
3 years ago
WILL MARK BRAINLEIST
lina2011 [118]

Answer:

decrease by 50%

Step-by-step explanation:

\frac{0.4x}{0.8y} =\frac{x}{2y}      

Decreased by 60% = (100%-60%)x = 0.4x.

Decreased by 20% = (100%-20%)x = 0.8x.

\frac{x}{y} initial fraction, and we can see that denominator will increase 2 times, so fraction will decrease 2 times, or decrease by 50%.

6 0
3 years ago
Helppp which one is it pleasee
solong [7]

Answer:

I think is D because u are putting the opposite in the first solutions u got a positive equation so for the other solutions i think u maybe are going to got the opposite I may be wrong But I just trying to help so sorry if u got it wrong

4 0
3 years ago
Angles 1 and 2 are complementary and congruent. What is the measure of angle 1
ExtremeBDS [4]

Answer:

45 i think i dont know

Step-by-step explanation:

m

∠

2

=

x

holds true.

Complementary angles have a sum of

90

˚

. Thus, if

∠

1

and

∠

2

are complementary,

m

∠

1

+

m

∠

2

=

90

Substitute the equivalent forms of these angle measurements

(

x

,

x

)

.

x

+

x

=

90

Solve algebraically.

2

x

=

90

x

=

45

Each angle is

45

˚

.

6 0
3 years ago
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