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LuckyWell [14K]
4 years ago
6

7th grade math help. Check answers too please

Mathematics
1 answer:
seraphim [82]4 years ago
6 0

Answer: It looks correct to me !

Step-by-step explanation:

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Is 4/3y=x a direct variation?
Masja [62]

Answer:

1 yes 2 no 3 no

Step-by-step explanation:

7 0
3 years ago
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harrison pours sand into a bucket at a constant rate. the graph shows the total weight of the bucket and the sand over time. aft
mash [69]

Answer:

The answer is "\bold{y=4x+17}".

Step-by-step explanation:

In the given statement the graph is missing. So, the correct solution to this question can be described as follows:

Given

graph point: \bold{(2, 25)}

Line points: \bold{(0,10), \ \  and \ \ (10,50)}

The Formula of slope:

\boxed{M= \frac{y_2-y_1}{x_2-x_1}}\\\\\Rightarrow x_1= 0, y_1= 10 \\\\\Rightarrow x_2= 10, y_2=50\\\\\Rightarrow M= \frac{50-10}{10-0}\\\\\Rightarrow M=\frac{40}{10}\\\\\Rightarrow M= 4\\

Assuming  point: (x,y)

Graph point: (2,25)

M= 4

Equation:

\Rightarrow \frac{25-y}{2-x}=4\\\\\Rightarrow 25-y=4(2-x)\\\\\Rightarrow 25-y=8-4x\\\\\Rightarrow y= 4x-17\\

7 0
3 years ago
If AB=7x, CB=5x+8 and BD AC what is the length of CB
seropon [69]

Answer:

x = 4

CB = 28

Step-by-step explanation:

In triangle ABC,

AB = CB..... (given)

Therefore,

7x = 5x + 8

7x - 5x = 8

2x = 8

x = 8/2

x = 4

CB = 5x + 8 = 5*4 + 8 = 20 + 8 = 28

8 0
3 years ago
Answer correctly and i’ll mark brainliest, pls help
snow_lady [41]

Answer:

22.5% increase.

Step-by-step explanation:

Because her collection grows by 9, that means it increases by 9/40 total. As a decimal, this would be 0.225. Then, as a percent you multiply that by 100 to get 22.5%. Pilar's collection increased by 22.5%

8 0
3 years ago
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Write the equation 2 x + 3y = 12 in slope intercept form
kicyunya [14]

Answer:

y = -2/3x + 4

Step-by-step explanation:

2x + 3y = 12

3y = -2x+12

y = -2/3x + 12/3

y= -2/3x + 4

6 0
2 years ago
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