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frez [133]
3 years ago
6

Which expression is equivalent to -3(2m-1)-n

Mathematics
2 answers:
KatRina [158]3 years ago
8 0
-6m+3-n is equivalent to -3(2m-1)-n
Sergeu [11.5K]3 years ago
7 0

Answer:

-6m-n+3.

Step-by-step explanation:

We have been given an expression -3(2m-1)-n. We are asked to find the equivalent expression to our given expression.

Using distributive property a(b+c)=ab+ac, we will get:

-3\times 2m-3\times-1-n

-6m+3-n

-6m-n+3

Therefore, the expression -6m-n+3 is equivalent to our given expression.

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(b) What portion of the official U.S. poverty threshold (roughly $29,000 for a family of four) is met by the World Bank’s measur
otez555 [7]
World Bank's threshold for poverty is $1.25 per person per day. 
For a family of four this gives:
Daily income = (number of people) * threshold
Daily income = 4 * $1.25
Daily income = $5
For a year this is:
Yearly income = (daily income) *365
Yearly income = $5 *365
Yearly income = $1825

U.S. poverty threshold is set at $29000. Portion of threshold can be calculated as:
Portion\text{ }of\text{ }threshold= \frac{Poverty\text{ }threshold\text{ }(World\text{ }Bank)}{Poverty\text{ }threshold\text{ }(U.S.)} *100\% \\  \\ Portion\text{ }of\text{ }threshold= \frac{1825}{29000} *100\% \\  \\ Portion\text{ }of\text{ }threshold=6.29\%

The poverty threshold measured by World Bank is 6.29% of the U.S. poverty threshold.
5 0
3 years ago
Which product will be negative?
inysia [295]

Answer:

7x(-9)

Step-by-step explanation:

-3x-5 becomes positive 15

-2x-1 becomes positive 2

6x6 is 36

7x-9 is -63

5 0
3 years ago
Read 2 more answers
a rectangle has a width of 4 cm and a length of 8cm is scaled by a factor of 6.what are the side lengths of the scaled copy
vichka [17]

Answer:

\huge\boxed{\text{Width: } 24 \ \ \ \text{Length: } 32}

Step-by-step explanation:

When we scale an object by a scale factor, the side lengths become the scale factor times bigger than the previous sides. Therefore, with a scale factor of 6, the side lengths would be multiplied by 6.

4 \cdot 6 = 24\\\\4 \cdot 8 = 32

Hope this helped!

6 0
3 years ago
Read 2 more answers
Find the zeros of polynomial function and solve polynomials equations.<br> f(x)=x^2-x-90
victus00 [196]

The zeros are:

10 and -9

(ten and negative-nine)

6 0
3 years ago
Sally buys a hang bag. There was a discaount of 35percent . If Sally paid $56.80 what was the original price?
Ksju [112]
Discount = 35%
Percentage after discount = 100% - 35% = 65%

65% = $56.80
1% = $0.8738
100% = $87.38

Answer: The original price is $87.38
4 0
2 years ago
Read 2 more answers
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