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umka21 [38]
3 years ago
14

Simplify the following expression! Please

Mathematics
2 answers:
Alex Ar [27]3 years ago
6 0
2(-20)+3[5/4(-20)]

-40 + 3[-25]
-40 + -75
-115

-115 is your final answer.
Aleonysh [2.5K]3 years ago
4 0
-40+-75 is the answer. 2 x -20 is -40. 5/4 x -20 = -25. -25x3= -75. leaving you with -40 + -75.
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What is 3 3/4 x 2 4/5
algol13

Answer:

10 \frac{1}{2}

Step-by-step explanation:

to multiply, convert each fraction into an improper fraction. you do that by multiplying the denominator by the whole number and adding the numerator. so 3 \frac{3}{4} will be \frac{15}{4} and 2 \frac{4}{5} will be \frac{14}{5}. now you multiply the numerator by the numerator and the denominator by the denominator. your fraction will be \frac{210}{20}. to simplify, you divide 210 by 20 and you will get 10 \frac{1}{2} :)

8 0
4 years ago
Read 2 more answers
What is the sum of all the positive integers from √24 to √102
nalin [4]

Answer:

\sqrt{24}   = 4.9

\sqrt{102}  = 10.1

positive integers = x

4.9 < x < 10.1

x = 5, 6, 7, 8, 9, 10

sum = 5 + 6 + 7 + 8 + 9 + 10

= 45

6 0
3 years ago
The graph of f(x) = X is reflected over the y-axis. Use the graphing calculator to graph this reflection. Which list contains
Maksim231197 [3]

Answer:

Option A.

Step-by-step explanation:

Note : The given function is linear, all options are incorrect for linear function.

Consider the given function is

f(x)=\sqrt{x}

For x=81,

f(81)=\sqrt{81}=9

For x=36,

f(36)=\sqrt{36}=6

For x=1,

f(1)=\sqrt{1}=1

It means the given function passes through the points (81,9), (36,6) and (1,1).

If a graph reflected across y-axis then

(x,y)\rightarrow (-x,y)

So, the new function is

g(x)=\sqrt{-x}

(81,9)\rightarrow (-81,9)

(36, 6)\rightarrow (-36, 6)

(1, 1)\rightarrow (-1, 1)

It means points (-81, 9), (-36, 6) and (-1, 1) lie on the graph of the reflection.

Therefore, the correct option is A.

4 0
3 years ago
Read 2 more answers
janice bought her mother a bunch of 10 flowers. two of the flowers are daisies. one half of the remaining flowers are tulips. wr
Paul [167]
2/10, or simplified as 1/5.
Since the part that are daisies is 2, and the total number of flowers is 10, the fraction is 2/10 or 1/5.
3 0
4 years ago
2 1/2 divide by 1/4 and how to write a real problem for it
den301095 [7]
2 1/2 = (2*2+1)/2 = 5/2
5/2 : 1/4 = 5/2 * 4/1 = 20/2 = 10
5 0
4 years ago
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