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Firdavs [7]
2 years ago
7

Insert parentheses to make the statement true 21-8-6=7

Mathematics
1 answer:
Advocard [28]2 years ago
5 0

(21-8)-6=7

and that's it

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Negative nine is greater than or equal to the sum of two - fifths times a number and 9.
Bumek [7]

Answer:

W is either -22.5, or less than -22.5

Step-by-step explanation:

-9>=2/5 times w (I wasn't sure what you meant by "and" 9. Like 9w?)

W has to be a negative number, or else it would be greater than 9, which would make the equation wrong.

2/5 times -22 1/2=-9. So w can be -22 1/2 or -22.5

W can then be anything "lower" (on the left side) of -22.5.

W<-22.5

5 0
3 years ago
When you find 420% of 85, what are you looking for? Are you looking for the percent, the part, the whole or a ratio
maw [93]

Answer:

percent

Step-by-step explanation:

it has a percent sign

Please mark me brainliest

6 0
3 years ago
A rectangular prism is 10 inches tall, 7 inches wide, and 3 inches long. What is the volume of the prism?
zzz [600]

Answer:volume is lengthxwidthxheight

Step-by-step explanation:

Length=3

Width=7

Height=10

3x7x10=210 inches ^3

4 0
3 years ago
Can someone help me please?
Roman55 [17]

Answer:

X-16 the first one

Step-by-step explanation:

The first one is equal to x-4

3 0
3 years ago
(a) Use the definition to find an expression for the area under the curve y = x3 from 0 to 1 as a limit. lim n→∞ n i = 1 Correct
Luba_88 [7]

Splitting up the interval of integration into n subintervals gives the partition

\left[0,\dfrac1n\right],\left[\dfrac1n,\dfrac2n\right],\ldots,\left[\dfrac{n-1}n,1\right]

Each subinterval has length \dfrac{1-0}n=\dfrac1n. The right endpoints of each subinterval follow the sequence

r_i=\dfrac in

with i=1,2,3,\ldots,n. Then the left-endpoint Riemann sum that approximates the definite integral is

\displaystyle\sum_{i=1}^n\frac{{r_i}^3}n

and taking the limit as n\to\infty gives the area exactly. We have

\displaystyle\lim_{n\to\infty}\frac1n\sum_{i=1}^n\left(\frac in\right)^3=\lim_{n\to\infty}\frac{n^2(n+1)^2}{4n^3}=\boxed{\frac14}

6 0
3 years ago
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