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anastassius [24]

4 years ago

11

Calculate the slope between the points (5,2) and (1,-6).

2 answers:

schepotkina [342]4 years ago

7 0

Answer:

go to ur right 5 up 2 the put a dot then for the other one go to ur right one time then down 6

Step-by-step explanation:

zepelin [54]4 years ago

5 0

Answer:

2

Step-by-step explanation:

The slope formula is change in y over change in x, in this case it's $(2-(-6))/(5-1) = 8/4 = 2$

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9. Combine the radical expression, if possible.

Anastaziya [24]

Answer:

we conclude that:

$3\sqrt{125}+4\sqrt{20}=23\sqrt{5}$

Hence, the last option i.e. $23\sqrt{5}$ is correct.

Step-by-step explanation:

Given the expression

$3\sqrt{125}+4\sqrt{20}$

Combining the radical expressions

$3\sqrt{125}+4\sqrt{20}$

let us first solve

$3\sqrt{125}$

$=3\sqrt{5^3}$

$=3\sqrt{5^2\cdot \:5}$

Apply radical rule: $\sqrt{ab}=\sqrt{a}\sqrt{b},\:\quad \:a\ge 0,\:b\ge 0$

$=3\sqrt{5^2}\sqrt{5}$

Apply radical rule: $\sqrt{a^2}=a,\:\quad \:a\ge 0$

$=3\cdot \:5\sqrt{5}$

$=15\sqrt{5}$

Thus,

$3\sqrt{125}=15\sqrt{5}$

similarly solving

$4\sqrt{20}$

$=4\sqrt{2^2\cdot \:5}$

Apply radical rule: $\sqrt{ab}=\sqrt{a}\sqrt{b},\:\quad \:a\ge 0,\:b\ge 0$

$=4\sqrt{2^2}\sqrt{5}$

Apply radical rule: $\sqrt{a^2}=a,\:\quad \:a\ge 0$

$=4\cdot \:2\sqrt{5}$

$=8\sqrt{5}$

Thus,

$4\sqrt{20}=8\sqrt{5}$

so we get

$3\sqrt{125}=15\sqrt{5}$

$4\sqrt{20}=8\sqrt{5}$

so the expression becomes

$3\sqrt{125}+4\sqrt{20}=15\sqrt{5}+8\sqrt{5}$ ∵ $3\sqrt{125}=15\sqrt{5}$ , $4\sqrt{20}=8\sqrt{5}$

$=23\sqrt{5}$ ∵ $15\sqrt{5}+8\sqrt{5}=23\sqrt{5}$

Therefore, we conclude that:

$3\sqrt{125}+4\sqrt{20}=23\sqrt{5}$

Hence, the last option i.e. $23\sqrt{5}$ is correct.

7 0

3 years ago

Find amplitude and midline of the function y=4cos(4)-5.

Nat2105 [25]

Amplitude: 4

If midline means center, it is -5
I'm also implying that there is an x in cos(4x)

7 0

3 years ago

Grey ran 2.4 times as many miles as Emory. If Emory ran 2.08 miles, how many miles did Grey run

MrRissso [65]

2.08 x 2.4= 4.992
Round answer=5 miles

6 0

4 years ago

What is the imaginary number

Sphinxa [80]

Answer:

i

Step-by-step explanation:

you have nothing for us to solve so if you need the definition of it just let me know, but it is represented by the letter "i"

7 0

4 years ago

Read 2 more answers

The question is in the picture

antiseptic1488 [7]

Answer:

$10^{19}$

$10^{-6} * 10^{25} = 10^{19}$

Step-by-step explanation:

10^46/ 10^-4 = $10^{50}$

$\sqrt{10^{50} } = 10^{25}$

7 0

3 years ago