Which equations are balanced? Select four options.

Mathematics

1 answer:

Natalija [7]3 years ago

3 0

Answer:

C3H8 + 5O2 → 3MgO + 2NH3

Zn + 2HCl → ZnCl2 + H2

Ca(OH)2 + 2H3PO4 → Ca3(PO4)2 + 6H2O

4Al + 3O2 → 2Al2O3

Step-by-step explanation:

I have the exact same question and I got the answers correct.

You might be interested in

The table shows the relationship between the amounts of ginger ale and fruit juice needed to make punch.

Aleksandr-060686 [28]

Here is your answer
2 12
3 18
5 30
9 54

4 0

4 years ago

Researchers sampled 178 young women who recently participated in a STEM program. Of the 178 STEM participants, 110 were in urba

fenix001 [56]

Answer:

Probability from Urban Area = $\frac{55}{89}$

Probability NOT from Rural Area = $\frac{83}{89}$

Step-by-step explanation:

Total 178

Urban 110

Suburban 56

Rural 12

Hence, probability of x is number of x divided by total.

So, probability that she is from an urban area = 110/178 = 55/89

And

probability NOT a rural area (means urban and suburban which is 110+56=166) = 166/178 = 83/89

3 0

3 years ago

Find the slope of the line using the slope formula.<br> (-1 , 3 ) and ( -1, 0)

xenn [34]

Answer:

Three ways to find the slope of a line: You may have two points #(x_1,y_1)# and #(x_2,y_2)# (often one or both of these points may be intercepts of the #x# and/or #y# axes). The slope is given by the equation. #m=(y_2-y_1)/(x_2-x_1)#. You may have a linear equation that is either in the form or can be manipulated into the form. #y = mx + b#.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Commission Melanie receives a 3% commission on every house she sells. If she received a commission of $8571, what was the value

katrin2010 [14]

Given:

The percentage rate of commission, R=3%.

The commission recieved by Melanie, C=$8571.

The expression for commission amount is,