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3 years ago

The number line shows the graph of an inequality:Which statement explains whether −2.5 can be a value in the shaded region?

Mathematics

1 answer:

4vir4ik [10]3 years ago

6 0

Yes it can be.... because -3.5 is on the left of 2.5

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Find the distance d (P1,P2) between the given points P1 and P2 P1= (5,4) P2=(-4,5)

oee [108]

Answer:

$\sqrt{82 }$

Step-by-step explanation:

d = $\sqrt{(x_{1} - x_2)^2+(y_1-y_2)^2 }$

d = $\sqrt{(5 - (-4))^2+(4-5)^2 }$

d = $\sqrt{(9)^2+(-1)^2 }$

d = $\sqrt{81+1 }$ = $\sqrt{82 }$

5 0

3 years ago

Plzzzzzzzzzzzzzz answer

Aleksandr-060686 [28]

If the amount of weeks is w, then -1.5w is the amount of hair cut off due to that she subtracts 1.5 from her hair every week. Therefore, since the base amount is 11.5, we have to add that to the expression to get 11-1.5w

6 0

3 years ago

Plz plz answer this i'll give 11 points

shutvik [7]

Answer:

A =bh

Step-by-step explanation:

2 1/2 times 5 1/4 = 13.125

4 0

3 years ago

Help! Will give brainliest and 10 points!

Genrish500 [490]

Answer:

its b

Step-by-step explanation:

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8 0

3 years ago

A student repeatedly measures the mass of an object using a mechanical balance and gets the following values: 560 g, 562 g, 556

MrRissso [65]

Answer: 2.76 g

Step-by-step explanation:

The formula to find the standard deviation:-

$\sigma=\sqrt{\dfrac{\sum(x_i-\overline{x})^2}{n}}$

The given data values : 560 g, 562 g, 556 g, 558 g, 560 g, 556 g, 559 g, 561 g, 565 g, 563 g.

Then, $\overline{x}=\dfrac{\sum_{i=1}^{10} x_i}{n}\\\\\Rightarrow\ \overline{x}=\dfrac{560+562+556+558+560+556+559+561+565+563}{10}\\\\\Rightarrow\ \overline{x}=\dfrac{5600}{10}=560$

Now, $\sum_{i=1}^{10}(x_i-\overline{x})^2=0^2+2^2+(-4)^2+(-2)^2+0^2+(-4)^2+(-1)^2+1^2+5^2+3^2\\\\\Rightarrow\ \sum_{i=1}^{10}(x_i-\overline{x})^2=76$

Then, $\sigma=\sqrt{\dfrac{76}{10}}=\sqrt{7.6}=2.76$

Hence, the standard deviation of his measurements = 2.76 g

6 0

3 years ago