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3 years ago

Solve 7/4=3/x to the nearest tenth

Mathematics

2 answers:

trapecia [35]3 years ago

6 0

uhhh idk just ask ur teacher hehe

Tema [17]3 years ago

4 0

7:3 = 4:X
3X = 7×4
28 / 3 = X
X = 9.3
X ≈ 9.5

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A certain circuit board consists of two resistors, green and red. The circuit board manufacturer has two huge bins filled with t

Lesechka [4]

Answer:

(a) 0.675

(b) 0.3

Step-by-step explanation:

$P(R) = 90\% = 0.9$ (Probability of functional red)

$P(\sim R) = 90\% = 1 - 0.9 = 0.1$ (Probability of non-functional red)

$P(G) = 75\% = 0.75$ (Probability of functional green)

$P(\sim G) = 1 - P(G) = 1 - 0.75 = 0.25$ (Probability of non-functional green)

(a) The probability the board is functional is the probability that the red and the green resistors are functional.

$P(\text{board is functional}) = P(R\cap G) = P(R) \times P(G) = 0.9\times0.75 = 0.675$

(b) The probability that exactly one of the resistors chosen is functional is the probability that either red is functional and green is not or green is functional and red is not.

$P(\text{exactly one is functional}) = P((R\cap \sim G) \cup (G\cap \sim R))$

$P(\text{exactly one is functional}) = P(R\cap \sim G) + P(G\cap \sim R) = (P(R) \times P(\sim G)) + (P(G) \times P(\sim R))$

$P(\text{exactly one is functional}) = (0.9 \times 0.25) + (0.75 \times 0.1) = 0.225 + 0.075 = 0.3$

6 0

4 years ago

Read 2 more answers

Cars lose value the farther they are driven. A random sample of 11 cars for sale was taken. All 11 cars were the same make and m

ICE Princess25 [194]

Answer:

$y=-\frac{1}{4}x+40$

Step-by-step explanation:

Given

See attachment for graph

Required

Determine the equation of the line of best fit

First, calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

From the graph, we can have:

$(x_1,y_1) = (20,35)$

$(x_2,y_2) = (60,25)$

So, the slope is:

$m = \frac{25 -35}{60 - 20}$

$m = \frac{-10}{40}$

$m = -\frac{1}{4}$

The equation is then calculated as:

$y = m(x - x_1) + y_1$

$y = -\frac{1}{4}(x - 20) + 35$

$y = -\frac{1}{4}x + 5 + 35$

$y=-\frac{1}{4}x+40$

Hence, the equation is: $y=-\frac{1}{4}x+40$

6 0

3 years ago

2⋅10^ 4 −7 ^3 =? First person to solve gets 10 Points and will also be rewarding branliest answer (Btw already know this answer

8_murik_8 [283]

Answer:

19657

Step-by-step explanation:

$2\cdot 10^4 - 7^3=20000-343=19657$

Hope this helps!

5 0

3 years ago

What is the best definition for marginal cost?

Crazy boy [7]

Answer:

Marginal cost refers to the increase or decrease in the cost of producing one more unit or serving one more customer.

Step-by-step explanation:

Definition: Marginal cost is the additional cost incurred for the production of an additional unit of output. The formula is calculated by :

Marginal Cost = (Change in the total cost)/(Change in the product output)

6 0

4 years ago

Read 2 more answers

8(k - 6) +58 = 2(4k + 5) one solution no solutions infinite solutions

Sergeeva-Olga [200]

Answer:

infinite solutions

Step-by-step explanation:

Given

8(k - 6) + 58 = 2(4k + 5) ← distribute parenthesis on both sides

8k - 48 + 58 = 8k + 10 , that is

8k + 10 = 8k + 10

Since both sides are equal then any value of x will make the equation true.

There are an infinite number of solutions

8 0

3 years ago