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irakobra [83]
3 years ago
10

PLEASE HELPPPPPPPPP MEEE!​

Mathematics
2 answers:
Gennadij [26K]3 years ago
7 0

Let's calculate

4/15×285 + 3/20×320 = 124

124 students are participating in these exercises.

Pie3 years ago
6 0

7 students is participating

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Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. In the equation√n+5
Yuki888 [10]

Answer:

n = 59

Step-by-step explanation:

The given equation of n is \sqrt{n + 5} - \sqrt{n - 10} = 1 and we have to solve it for n.

\sqrt{n + 5} - \sqrt{n - 10} = 1 ........... (1)

⇒ \frac{(n + 5) - (n - 10)}{\sqrt{n + 5} + \sqrt{n - 10}} = 1  

{Rationalizing the numerator}

⇒ \sqrt{n + 5} + \sqrt{n - 10} = 15 .............. (2)

Now, adding (1) and (2) we get

2\sqrt{n + 5} = 16

⇒ n + 5 = 64 {Squaring both sides}

⇒ n = 59 (Answer)

4 0
3 years ago
Use the diagram.<br> What is the length of }EG ?<br> A 1 B 4.4<br> C 10 D 16
nataly862011 [7]

Answer:

Option (D)

Step-by-step explanation:

Length of the bar EG = 1.6x

If F is a point on the bar such that,

EF + FG = EG

Measure of segment EF = 6

Measure of FG = x

By substituting measures of each side,

6 + x = 1.6x

1.6x - x = 6

0.6x = 6

x = 10

Length of EG = x + 6

                      = 10 + 6

                      = 16 units

Option (D) will be the correct option.

3 0
3 years ago
What IS 20 divided by 13 ?
goldenfox [79]

Solution,\mathrm{Convert\:improper\:fractions\:to\:mixed\:numbers}:\quad \frac{20}{13}=1\frac{7}{13}

Steps:

\frac{20}{13}

\mathrm{Long\:Division}\:\frac{20}{13}:\quad 1\quad \mathrm{Remainder}\quad \:7

Convert\:to\:mixed\:number:\:Quotient\frac{Remainder}{Divisor},\\\frac{20}{13}=1\frac{7}{13}

Hope\: This\: Helps!!!

4 0
4 years ago
Read 2 more answers
Baxter has a sandbox that holds Kinetic sand. The diagram
NARA [144]

It's a cuboid

  • Length=L=3-3/4=3.75ft
  • Breadth=11/12ft=0.92ft
  • Height=H=4ft

Volume:-

  • LBH
  • 3.75(0.92)(4)
  • 13.8ft²

6 0
3 years ago
Read 2 more answers
Two fifths of the cross-country team arrived at the weight room at 7 a.m. Ten minutes later, 3/10 of the team showed up. The res
frosja888 [35]

Answer:

7/10 of the team showed up

Step-by-step explanation:

5 0
3 years ago
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