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True [87]
3 years ago
15

class="latex-formula">
Mathematics
1 answer:
torisob [31]3 years ago
8 0

n+7=13

Subtract the 7 and eliminate the 7 then subtract from 13 on the other side.

n=6

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36 singers in the choir 5/6 are boys how many of the singers are girls
Aleksandr [31]

Answer:

6

Step-by-step explanation:

5/6 of 30 = ?

5            x

----    =   ----

6             36

36 x 5 = 180

180/6 = 30

That means 30 singers are boys.

36 - 30 = 6 (the number of girls)

5 0
3 years ago
What is the slop and y-intercept of this line y = x - 5
raketka [301]

Answer:

The slope is  

1

y -intercept is  

− 5

.

Step-by-step explanation:

7 0
3 years ago
What adds to 9 and multiplies to -360
Korvikt [17]
The answer is 40 cause 4 times 9 = 36 so juat add the 0 to 4 and it makes it 40 times 9 ='360
7 0
2 years ago
Read 2 more answers
Plz show work to get brainliest
gogolik [260]

Answer:

45 students speak Spanish at Francis Lewis High School

Step-by-step explanation:

Option1:

  \frac{72}{400}  = \frac{x}{250}

  18000 = 400x

  x = 45 students speak Spanish at Francis Lewis High School

Option2:

  72 ÷ 400 = 0.18

  0.18 * 250 = 45 students speak Spanish at Francis Lewis High School

4 0
3 years ago
Part 1. Determine the molar mass of a 0.622-gram sample of gas having a volume of 2.4 L at 287 K and 0.850 atm. Show your work.
sdas [7]

If a sample of gas is a 0.622-gram, volume of 2.4 L at 287 K and 0.850 atm. Then the molar mass of the gas is 7.18.

<h3>What is an ideal gas equation?</h3>

The ideal gas equation is given below.

PV = nRT

The equation can be written as

\rm PV = \dfrac{m}{M} \ RT\\\\\\MPV = mRT

Where M is the molar mass, P is the pressure, V is the volume, R is the universal gas constant, T is the temperature, and m is the mass of the gas.

Then the molar mass of a 0.622-gram sample of gas has a volume of 2.4 L at 287 K and 0.850 atm.

V = 2.4 L = 0.0024

P = 0.85 atm = 86126.25 Pa

T = 287 K

m = 0.622

R = 8.314

Then we have

\begin{aligned} \rm M \times 86126.25 \times  0.0024&= 0.622 \times  8.314 \times 287\\\\\rm M &= 7.18 \end{aligned}

Then the molar mass of the gas is 7.18.

More about the ideal gas equation link is given below.

brainly.com/question/4147359

#SPJ1

6 0
1 year ago
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