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tigry1 [53]
2 years ago
14

Which expression is equivalent to ? A. B. C. D.

Mathematics
2 answers:
Lorico [155]2 years ago
8 0

\longrightarrow{\green{   D. \: 18 \frac{1}{5}   +  22  \frac{2}{5}   +  40 \frac{1}{5}  }} 

\sf \bf {\boxed {\mathbb {STEP-BY-STEP\:EXPLANATION:}}}

18 \frac{1}{5}  - ( - 22  \frac{2}{5} ) - ( - 40 \frac{1}{5} )\\

= 18 \frac{1}{5}   +  22  \frac{2}{5}   +  40 \frac{1}{5} \\

<h3><u>Note</u>:-</h3>

( - ) x ( - ) = ( + )

\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35☂}}}}}

sweet-ann [11.9K]2 years ago
7 0
The answer is B, A, and D
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Answer irdk just need points lol.
3 0
2 years ago
Which value of x must be excluded from the domain of the function, y = 9 / 2(x + 7)?
svlad2 [7]
B) -7 because the dominator must be different by 0.

2(x + 7) ≠ 0    |divide both sides by 2

x + 7 ≠ 0    |subtract 7 from both sides

x ≠ -7
8 0
2 years ago
Alberto measures the length of a piece of wire to be 105 cm. The actual length of the wire was 120 cm. What was the percent erro
natali 33 [55]

Answer:

12.5%

Step-by-step explanation:

105 over 120 is the fraction that he got so you subtract 105 from 120 to get how much he missed. 120-105=15

He miscalculated by 15 cm out of the total of 120, 15/ 120

15/120=5/40=2.5/20 multiply the top and bottom by 5 to get the percentage out of 100. 2.5 times 5 =12.5, so he miscalculated by 12.5%

7 0
3 years ago
Line g passes through points (1, 1) and (10,9). Line h is perpendicular to g. What is the
shusha [124]

Answer:

-9/8

Step-by-step explanation:

Slope m = (y2-y1)/(x2-x1)

using (1,1) and (10,9)

m = (9 - 1)/(10 - 1)

m = (8)/(9)

m = 8/9

slope of line g is 8/9

Perpendicular lines have slopes that are negative reciprocals of one another

so slope of h is -9/8

5 0
2 years ago
Select the correct answer(s) from the given options:
Olegator [25]

Answer:

A

Step-by-step explanation:

All you have to is multiply 5x20 = 100 and 5 x 10 = 50 Then add and you get 150.

5 0
3 years ago
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