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maxonik [38]
3 years ago
11

If -7 +3x=-25, what is the value of x^2-6x+9

Mathematics
2 answers:
Musya8 [376]3 years ago
4 0
Add seven to both sides of the equal sign. Now you have 3x= -18 Then divide by three on each side. Now you have x= -6 Then plug it in. -6^2-6(-6)+9 The answer to that is 9
Debora [2.8K]3 years ago
3 0
It's so much better when there's a pic. :D

Work is attached.

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Which equation will solve the following word problem? One small pitcher and one large pitcher can hold 12 cups of water. If the
Inessa [10]

Answer:

Option (1).

Step-by-step explanation:

Amount of water hold by both the pitchers (Large + small) = 12 cups

Let the small pitcher holds the water = S cups

If the water hold by the large pitcher is twice the size of the small pitcher, then the amount of water hold by large pitcher = 2S

Total amount water hold by both = S + 2S

Equation for this situation will be,

S + 2S = 12

Therefore, Option (1) will be the answer.

7 0
3 years ago
2x^2-7x=-1 what are the solutions in decimal form?
Scorpion4ik [409]
0.14921894<span>3 or 3.3507811

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8 0
3 years ago
Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.
Vinvika [58]

Answer:

The point estimate for population mean is 8.129 Mpa.

Step-by-step explanation:

We are given the following in the question:

Data on flexural strength(MPa) for concrete beams of a certain type:

11.8, 7.7, 6.5, 6.8, 9.7, 6.8, 7.3, 7.9, 9.7, 8.7, 8.1, 8.5, 6.3, 7.0, 7.3, 7.4, 5.3, 9.0, 8.1, 11.3, 6.3, 7.2, 7.7, 7.8, 11.6, 10.7, 7.0

a) Point estimate of the mean value of strength for the conceptual population of all beams manufactured

We use the sample mean, \bar{x} as the point estimate for population mean.

Formula:

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

\bar{x} = \dfrac{\sum x_i}{n} = \dfrac{219.5}{27} = 8.129

Thus, the point estimate for population mean is 8.129 Mpa.

4 0
3 years ago
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e-lub [12.9K]

Answer:

a nd c

Step-by-step explanation:

5 0
2 years ago
Dilating a triangle changes the angles and side length of the triangle. A. True B. False
Bogdan [553]
False, it may change the side length (not 100% sure) but I know for sure dilating doesn't change the angle
3 0
3 years ago
Read 2 more answers
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