3 years ago

Help pleaseeeeeeeeee

Mathematics

1 answer:

Anna11 [10]3 years ago

8 0

where is the question sir??

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2. Sheldon was doing a science experiment about temperature. He first measured the

Burka [1]

Answer:

Temperature dropped by 28°C in two hours

Step-by-step explanation:

Initial measurement:

t = 17°C

Measurement 2 hours later:

t = - 11°C

The difference:

-11°C - 17°C = -28°C

Temperature dropped by 28°C in two hours

7 0

3 years ago

Which of the following points are more than 5 units from the point P(−2, −2)? Select all that apply. A A (2, 1) B B (4, −1) C C

netineya [11]

The distance between any 2 points P(a,b) and Q(c,d) in the coordinate plane, is given by the formula:

 $|PQ|= \sqrt{ (a-c)^{2} + (b-d)^{2}}$

Using this formula we calculate the distances |PA|, |PB|, |PC|, |PD| and |PE| and compare to 5.

$|PA|= \sqrt{ (-2-2)^{2} + (-2-1)^{2}}= \sqrt{16+9}= \sqrt{25}=5$

$|PB|= \sqrt{ (-2-4)^{2} + (-2+1)^{2}}= \sqrt{36+1}= \sqrt{37} \approx 6$

$|PC|= \sqrt{ (-2-2)^{2} + (-2+3)^{2}}= \sqrt{16+1}= \sqrt{17}\approx4$

$|PD|= \sqrt{ (-2+6)^{2} + (-2+6)^{2}}= \sqrt{16+16}= \sqrt{32}\ \textgreater \ \sqrt{25}=5$

$|PE|= \sqrt{ (-2+5)^{2} + (-2-1)^{2}}= \sqrt{9+9}= \sqrt{16}=4$

Answer: B and D

3 0

3 years ago

Being tested hurry pls.

Nikolay [14]

Answer:

Step-by-step explanation:

4 0

3 years ago

Eight times what equals 226

PSYCHO15rus [73]

Answer:

28.25

Step-by-step explanation:

just do 226 divided by 8

3 0

3 years ago

Read 2 more answers

Please help me!! Just help me solve

Kruka [31]

The solution for the system of equations are:
$x = \frac{7}{5} \\ y = \frac{11}{5}$
Attached is the graph of lines y=3x-2 and y=-2x+5.

4 0

3 years ago