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3 years ago

Helppppppppppppppppppppppppppp

Mathematics

1 answer:

Paul [167]3 years ago

6 0

Answer:

20, and 26 are the middle - 23 is the average. Your answer is 23.

Step-by-step explanation:

So since they are in order from least to greatest, basically it's the middle one.

Since there is an even number and there isn't a middle one (like it is here) then, it is the average of the middle two.

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Blank minus 3/8 equals 3/4

jeka57 [31]

Answer:

1 1/8

Step-by-step explanation:

3/4 = 6/8 ( 3x2= 6 numerator ) ( 4x2= 8 denominator )

6/8 + 3/8 = 9/8 = 1 1/8

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2 years ago

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There are 15 apples but 1.3 we’re ate how many are left

Nikolay [14]

Answer:

not completely sure but I think it's it's 13.4

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2 years ago

Solve -9(t - 2) = 4(1-15).

snow_lady [41]

Answer:

t = 74 / 9

Step-by-step explanation:

-9(t - 2) = 4(1 - 15)

-9t + 18 = 4 - 60

-9t + 18 = -56

-18 -18

-9t = -74

/-9 /-9

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t = 8.22

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3 years ago

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Sabendo que "K" satisfaz a equação {2(k-8) + 3(-k+1) = -4k +11} Os valores reais de x que satisfazem a equação 15x² - kx + 1 = 0

erastova [34]

Answer:

D) 1/5 e 1/3

Step-by-step explanation:

You have the following quadratic equation:

$15x^2-kx+1=0$ (1)

In order to find the values of x that are solution to the equation (1), you first find the solution for k in the following equation:

$2(k-8)+3(-k+1)=-4k+11\\\\2k-16-3k+3=-4k+11\\\\2k-3k+4k=11+16-3\\\\3k=24\\\\k=8$

Next, you replace the previous value of k in the equation (1) and you use the quadratic formula to find the roots:

$15x^2-8x+1=0\\\\x_{1,2}=\frac{-(-8)\pm \sqrt{(-8)^2-4(15)(1)}}{2(15)}\\\\x_{1,2}=\frac{8\pm 2}{30}\\\\x_1=\frac{1}{5}\\\\x_2=\frac{1}{3}$

Then, the roots of the equation (1) are

D) 1/5 e 1/3

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3 years ago

Two more than five times a number is less than or equal to 47

Sliva [168]

5x + 2 < 47

Side note: put the line under the

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2 years ago