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3 years ago

A system of linear inequalities is below.

Mathematics

1 answer:

Kryger [21]3 years ago

6 0

(-4,0 ) because equalism

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I need help with this slope proplems

Leto [7]

Answer:

Melissa = D

Victor = C

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A spinner has 10 equal-sized sections. Two of the sections are red.

hichkok12 [17]

Answer:

a. Probability of landing on red = $\frac{1}{5}$

b. <em>See Explanation</em>

Step-by-step explanation:

Given

A Spinner

Number of section = 10 (equal sized)

Number of red section = 2

Required

- Probability of landing on red

- Describe the probability in words

Calculating the probability of landing on red

The formula used in calculating probability is as follows

Probability = Number of required outcomes / Number of possible outcomes

In this case, the number of required outcomes is the number of red section.

Hence, number of required outcomes = 2

And the number of possible outcomes is the total section of the spinner

Hence, Number of possible outcomes = 10

By Substitution

Probability of landing on red = $\frac{2}{10}$

Probability of landing on red = $\frac{1}{5}$

Describe the probability in words

From (a) above, we have that the probability of the spinner landing on color red is $\frac{1}{5}$

This means that, for every five times, you spin the spinner, it's likely that one of the outcomes will be red.

8 0

4 years ago

Evaluate ( r - s ) 3 t r 2 r =-3 s=-4

puteri [66]

Answer:

-9t

Step-by-step explanation:

(r-s) 3 × t × r

(-3- -4) 3 × t × -3

3 × t × -3

-9t

3 0

4 years ago

Does anybody know this

Dmitrij [34]

Step-by-step explanation:

The equation used to determine the amount of radioactive material left is

$A = A_0(2)^{-t/HL}$

We are have the following given quantities:

t = 30 seconds

$A_0$ = 50 grams

HL = 6 seconds

Plugging these into our equation we get

$A = (50\:\text{grams})(2)^{-(30s/6s)}$

$\:\:\:\:= (50\:\text{grams})(0.03125)$

$\:\:\:\:= 1.56\:\text{grams}$

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%7Ba-3b%7D%7Ba%2B2b%7D%20%3D%20%5Cfrac%7B4%7D%7B3%7D" id="TexFormula1" title="\frac{a-3

choli [55]

Answer:

$a:b = -17:1$

Step-by-step explanation:

Given

$\frac{a-3b}{a+2b} = \frac{4}{3}$

Required

Find a:b

$\frac{a-3b}{a+2b} = \frac{4}{3}$

Cross Multiply

$3(a-3b) = 4(a+2b)$

Open brackets

$3a - 9b = 4a + 8b$

Collect Like Terms

$3a - 4a = 8b+9b$

$-a = 17b$

Divide through by -b

$\frac{-a}{-b} = \frac{17b}{-b}$

$\frac{a}{b} = \frac{17}{-1}$

$\frac{a}{b} = \frac{-17}{1}$

Represent as a ratio

$a:b = -17:1$

5 0

3 years ago