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2 years ago

Pls help! I don't get this!!

Mathematics

1 answer:

SVETLANKA909090 [29]2 years ago

8 0

Answer:

5; 2n + 5 ≤ 15

6; n/5 ≤ 15

7; 5n ≥ 15

Step-by-step explanation:

"a number" means a variable denoted "n"

"product" means to multiply

"quotient" means to divide

"The sum" means to add

"is at least" means greater than or equal to or ≥

"is no greater than" means less than or equal to or ≤

"Is at most" means less than or equal to or ≤

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Will side lengths of 12, 18, and 6 make a right triangle? A Yes, because 12 + 6 = 18 B Yes, because 62 = 12 C No, because 36 + 1

seropon [69]

The answer is A. Yes Bc 12 +6 =18

6 0

2 years ago

Chris is a college student who can work a maximum of 40 hours per week. He needs to make at least $900 in order to cover his exp

IgorC [24]

Equation 1: x + y = 40 ; therefore y = 40 - x
Equation 2: 25x + 15y = 900
Find x first:

25x + 15 (40 - x) = 900
25x + 600 - 15x = 900
10x = 900 - 600
x = 300÷10
x = 30 hours Chris needs to spend for tutoring job

y = 40 - 30
y = 10 hours Chris needs to spend for referencing job

7 0

3 years ago

Another easy one what is 5x1000

Angelina_Jolie [31]

Answer:

5000

Step-by-step explanation:

i hate how j have to add 20 character to sendddd

7 0

3 years ago

Read 2 more answers

Let f(x) = cxe−x2 if x ≥ 0 and f(x) = 0 if x < 0.

sergij07 [2.7K]

(a) If f(x) is to be a proper density function, then its integral over the given support must evaulate to 1:

$\displaystyle\int_{-\infty}^\infty f(x)\,\mathrm dx = \int_0^\infty cxe^{-x^2}\,\mathrm dx=1$

For the integral, substitute u = x ² and du = 2x dx. Then as x → 0, u → 0; as x → ∞, u → ∞:

$\displaystyle\frac12\int_0^\infty ce^{-u}\,\mathrm du=\frac c2\left(\lim_{u\to\infty}(-e^{-u})-(-1)\right)=1$

which reduces to

c / 2 (0 + 1) = 1 → c = 2

(b) Find the probability P(1 < X < 3) by integrating the density function over [1, 3] (I'll omit the steps because it's the same process as in (a)):

$\displaystyle\int_1^3 2xe^{-x^2}\,\mathrm dx = \boxed{\frac{e^8-1}{e^9}} \approx 0.3678$

5 0

2 years ago

X - 5y = -20 y = ax + b

GuDViN [60]

Answer:

I Graphed It

Step-by-step explanation:

6 0

3 years ago