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1 year ago

Fill in the blank with the correct number to balance the equation: 4Cr + 3O2 → Cr2O3

Mathematics

1 answer:

ivanzaharov [21]1 year ago

4 0

Answer:

Step-by-step explanation:

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A plumber charges a base fee of $ 60, and then each hour of work costs $ 15. Yesterday Joe hired the plumber to fix his sink, at

lutik1710 [3]

Answer:

12 hours

Step-by-step explanation:

Step one:

given data

base fee= $60

charge per hour= $15

let the number of hours the plumber work be x

the linear function for the charge is the equation of line.

that is y=mx+c

Step two:

given that y=$240

240=15x+60

240-60=15x

180=15x

divide both sides by 15 we have

x=180/15

x=12

<u>The number of hours is 12</u>

4 0

2 years ago

8.3 as a mixed number

Alik [6]

Step-by-step explanation:

8.3 = 8+ 0.3

= 8 + 3/10

= 8 3/10

6 0

2 years ago

Read 2 more answers

A bag contain 5 red marbles,4 green marbles and 1 blue marble. A marble is chosen at random from the bag and not replaced; then

jarptica [38.1K]

Answer:

$\frac{2}{15}$

Step-by-step explanation:

GIVEN: A bag contain $5$ red marbles, $4$ green marbles and $1$ blue marble. A marble is chosen at random from the bag and not replaced, then a second marble is chose.

TO FIND: What is the probability both marbles are green.

SOLUTION:

Total marbles in bag $=10$

total number of green marbles $=4$

Probability that first marble will be green $P(A)=\frac{\text{total green marbles}}{\text{total marbles}}$

$=\frac{4}{10}=\frac{2}{5}$

Probability that second marble will be green $P(B)=\frac{\text{total green marble in bag}}{\text{total marble in bag}}$

$\frac{3}{9}=\frac{1}{3}$

As both events are disjoint

probability both marbles are green $=P(A)\times P(B)$

$=\frac{2}{5}\times\frac{1}{3}=\frac{2}{15}$

Hence the probability both marbles are green is $\frac{2}{15}$

8 0

2 years ago

What letter on this number line represents -(3/2)?

Rina8888 [55]

Answer:

Step-by-step explanation:

- 3/2 is - 1.5 , and B is - 1.5

6 0

1 year ago

Find the slope of the line that passes through (-6,1) and (4,-3)

Aleonysh [2.5K]

$Slope\ formula=\frac{rise}{run}=\frac{y_2-y_1}{x_2-x_1}=\\\\\frac{-3-1}{4-(-6)}=\\\\\frac{-4}{10}=\\\\{\boxed{Slope=-\frac{2}{5}}$

7 0

2 years ago