4 years ago

Please help me!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Nataly_w [17]4 years ago

6 0

I think the answer is d

Lunna [17]4 years ago

4 0

129 / 20 = 6.45.
The answer should be D because that is the closest to the dot.

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How to solve 7m + 2n = 21 and 10m + 4n = -10 using substitution. Step by step please and thank you!

ryzh [129]

7m+2n=21
-7m -7m

2n=21-7m
2 2

n=21-7m
 2

10m+4(21-7m/2)= -10
-10m -10m

4(21-7m/2)= -10-10m

(84-28m/2)= -10-10m
x2 x2

84-28m = -20-20m
+20+28m +20+28m

104 = 8m
8 8

m=13

10(13) + 4n = -10
-130 -130

4n = -140
4 4

n= -35

If anything is unclear please feel free to ask.

5 0

4 years ago

the Andersons kept track of the time they spent watching television. Part A wich bar diagram represents the number of hours the

DENIUS [597]

Part A:

Part B:

$\begin{gathered} 4\frac{5}{6}=\frac{29}{6} \\ 3\frac{4}{6}=\frac{11}{3} \\ so\colon \\ \frac{29}{6}+\frac{11}{3}=\frac{17}{2}=8\frac{3}{6} \end{gathered}$

Part C:

$\begin{gathered} 3\frac{1}{6}=\frac{19}{6} \\ 2\frac{3}{6}=\frac{15}{6} \\ so\colon \\ \frac{29}{6}+\frac{11}{3}+\frac{19}{6}+\frac{15}{6}=\frac{85}{6}=14\frac{1}{6} \end{gathered}$

Part D: