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3 years ago

Hey guys!! U think u can help me on this plsss... :)))

Mathematics

1 answer:

liraira [26]3 years ago

8 0

Answer:

4\7

Step-by-step explanation:

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How do you find the perimeter in a triangle

FromTheMoon [43]

Answer: P=a+b+c

Step-by-step explanation: You use this formula to find perimeter of a triangle.

4 0

3 years ago

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<img src="https://tex.z-dn.net/?f=3%284x-5%29-4x%2B1%3D-6" id="TexFormula1" title="3(4x-5)-4x+1=-6" alt="3(4x-5)-4x+1=-6" align=

DaniilM [7]

Answer:

$x=1$

Step-by-step explanation:

Expand the brackets by multiplying each term in the bracket by the expression outside the bracket:

$3(4x-5)-4x+1=-6$

⇒ $12x-15-4x+1=-6$

Gather like terms and combine:

⇒ $12x-4x+1-15=-6$

⇒ $8x-14=-6$

Add 14 to each side of the equation:

⇒ $8x-14+14=-6+14$

⇒ $8x=8$

Divide both sides by 8:

⇒ $8x \div8=8\div8$

⇒ $x=1$

8 0

2 years ago

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A 150-pound person uses 4.8 calories per minute when walking at a speed of 4 mph. How long must a person walk at this speed to u

Lena [83]

Figure it out that’s so easy

5 0

3 years ago

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PLEASE HELP WITH THIS QQUESTION! 35 POINTS!!!!!!!!!!!

Ivenika [448]

Yes; 23+147 = 170
No: 112+48 = 160

Since its asking for a ratio of those who have to those who haven't, the ratio should be-

170 ; 160

Simplified:
34 ; 32 ( divided by 5 )

7 0

4 years ago

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A bacteria colony increases in size at a rate of 4.0565e1.3t bacteria per hour. If the initial population is 54 bacteria, find t

Dovator [93]

Answer:

Population of bacteria four hours later $A=616.5187$ or nearest whole number

$A=616$

Step-by-step explanation:

Given,

Let amount of bacteria four hours later is=A

Rate of increase of bacteria per hour $=\frac{\partial x}{\partial t}=4.0565e^{1.3t}$

Initial population of bacteria is =54

Time 4 hours

Find the population of bacteria 4 hours later

Solution,

$\int_{54}^{A}dx=\int_{0}^{4}4.0565e^{1.3t}dt$

$\left [ x \right ]_{54}^{A}=4.0565/1.3\left [e^{1.3t} \right ]_{0}^{4}$

$A-54=4.0565/1.3\left ( e^{1.3\times 4} -1\right )$

$A-54=562.5187301$

$A=562.5187301+54$

$A=616.5187$

Population of bacteria 4 hours later is $A=616$

8 0

4 years ago