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Natali [406]
3 years ago
6

Need help on this so yeah ​

Mathematics
1 answer:
lapo4ka [179]3 years ago
7 0

Answer:

None of them

Step-by-step explanation:

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If four times a number plus 3 is 11, what is the number
garri49 [273]
4x + 3 = 11
4x = 11 -3
4x = 8
x =8/4
x =2

answer
the number is 2
3 0
3 years ago
Read 2 more answers
In an insect colony there are 270 insects after 9 days. If there were initially 80 insects how long will it take the population
Semenov [28]

Answer:

The time it will take the population to grow to 800 insects is 17 days.

Step-by-step explanation:

The growth function of the insects is exponential.

The exponential growth function is:

y=a(1+r)^{t}

Here,

<em>y</em> = final value

<em>a</em> = initial value

<em>r</em> = growth rate

<em>t</em> = time taken

It is provided that there were 270 insects after 9 days and initially there were 80 insects.

Compute the value of <em>r</em> as follows:

y=a(1+r)^{t}\\\\270=80(1+r)^{9}\\\\3.375=(1+r)^{9}\\\\\ln(3.375)=9\cdot \ln(1+r)\\\\0.135155=\ln(1+r)\\\\1+r=1.14471\\\\r=0.145

Now, compute the time it will take the population to grow to 800 insects as follows:

800=80(1+0.145)^{t}\\\\10=(1.145)^{t}\\\\\ln(10)=t\cdot \ln(1.145)\\\\t=17.00522\\\\t\approx 17

Thus, the time it will take the population to grow to 800 insects is 17 days.

7 0
3 years ago
The function f(x) = 1.50x – 30 gives the amount of money Amelia has to spend each week for x school lunches, after taking money
Naya [18.7K]
To find the inverse, switch the x and y, and then solve for y (f(x) is the same as y)

So we get:
x=1.50y-30 (add 30 to both sides)
x+30=1.50y (divide both sides by 1.5)
x/1.5+30/1.5=y
y=x/1.5+20

Hope this helps
7 0
3 years ago
Can someone help please
Alik [6]

Answer:

6

Step-by-step explanation:

base + 2(legs) = 56  (2 legs are the same because it's isosceles)

x + 2(5x - 5) = 56

x + 10x - 10 = 56

11x -10 = 56

11x = 66

x = 6

5 0
3 years ago
3) Find the percent of each number<br> 38% of 50=<br> 27% 300=<br> 60% 75=​
Scrat [10]

Answer:19, 81, 45

Step-by-step explanation:

7 0
3 years ago
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