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anzhelika [568]
3 years ago
7

2 × 30 = 2 × (3 × 10)

Mathematics
2 answers:
ad-work [718]3 years ago
6 0

Answer: True

Step-by-step explanation: According to PEMDAS you multiply the numbers in the parentheses so you get 3x10=30 then you multiply 30 x 2=60 so 2x30=2x(3x10)

vampirchik [111]3 years ago
5 0

Answer:They are equivalent, if that's what your trying to find out.

Step-by-step explanation:

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I found a place that will give me 20% discount if I spend over $50. My pill is $75. How much money will I save?
olasank [31]
75*.2=15
you would save $15

hope that helps
5 0
3 years ago
The measured weights of 1,000 men in a certain village follow a normal distribution with a mean of 150 pounds and a standard dev
Hitman42 [59]
Z = (X-Mean)/SD 
<span>z1 = (165 - 150)/15 = +1 </span>
<span>z2 = (135 - 150)/15 = - 1 </span>
<span>According to the Empirical Rule 68-95-99.7 </span>
<span>Mean +/- 1SD covers 68% of the values </span>
<span>100% - 68% = 32% </span>
<span>The remaining 32% is equally distributed below z = - 1 and z = +1 </span>
<span>32%/2 = 16% 
</span>
<span>Therefore, 
</span>
<span>a) Number of men weighing more than 165 pounds = 16% of 1000 = 160 </span>
<span>b) Number of men weighing less than 135 pounds = 16% of 1000 = 160</span>
3 0
3 years ago
Read 2 more answers
How do you write 72% as a fraction in simplest form?
Step2247 [10]
72% = 72/100

72/100=36/50=18/25 
6 0
3 years ago
Solve systems of equations algebraically x+y=6 and 2x+3y=13
HACTEHA [7]
X+y=6 is..... 
solve for x=0... y=6 
solve for y=0... x=6 
intersect x-axis at (6,0)... calculate the slop: solve for x=1... 1+y=6... 6-1= 5 y=5
calculate the slope: a= y(x=1)-y(x=0)/1=-1 
x+y=6 
5 0
3 years ago
Solve: 5h + 2(11 - h) = -5 *<br> h = -9<br> h = 9<br> h = -8<br> h = 8
BigorU [14]

Answer:

-9

Step-by-step explanation:

do distributive property first to eliminate the parenthesis.

5h + 22 - 2h = -5

combine like terms

3h + 22 = -5

move the 22 over by subtraction

3h = -27

divide

h = -9

6 0
3 years ago
Read 2 more answers
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