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Delvig [45]
3 years ago
15

If DE=4x+10, EF=2x-1, and DF=9x-15, find DF. * Captionless Image

Mathematics
1 answer:
liq [111]3 years ago
6 0
Answer: 63

Hopefully the work makes sense but basically you will add equation DE and EF to get 6x+11 then use that equation with DF and solve for x which will get 26/3 then plug it into DF to get 63
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The capacity of a small bottle of glue is 185 ml. How much glue is there in 3 bottles?
Dmitrij [34]
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4 0
3 years ago
Find the percent of decrease from 280 to 210. Round to the nearest tenth of a percent, if necessary.
Vlada [557]
To find the decreased percentage,here's what we can do:
\frac{originl \: value - new \: value}{originl \: value}  \times 100\%

In this case,the eqaution would be:
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Hope it helps!
5 0
3 years ago
Correctly describe the slope of the graph of 2x + 5y = 6?
USPshnik [31]

Answer:

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6 0
3 years ago
It is known that the point P(-9,18) belongs to the graph of the function y=k/x. Find k.
riadik2000 [5.3K]

Answer:

k = (-162).

Step-by-step explanation:

A point of the form (x_{0},\, y_{0}) belongs to the graph of this function, y = k / x, if and only if the equation of this function holds after substituting in x = x_{0} and y = y_{0}.

The question states that the point (-9,\, 18) belongs to the graph of this function. Thus, the equation of this function, y = k / x, should hold after substituting in x = (-9) and y = 18:

y = k / x.

18 = k / (-9).

Solve this equation for the constant k:

\begin{aligned}k &= 18 \times (-9) \\ &= (-162)\end{aligned}.

Thus, k = (-162).

6 0
2 years ago
Anna lives 9 blocks from school. How many blocks does she walk to school in 3 days
netineya [11]
Multiply 9 by 3

she walks 27 blocks in three days
8 0
3 years ago
Read 2 more answers
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