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Luden [163]
4 years ago
11

How old am i if 300 reduced by 3 times my age is 219

Mathematics
1 answer:
Crazy boy [7]4 years ago
7 0
Isn't it 27? Because if you went backwards 300-219 is 81 and 81 divided by 3 is 27. if you went forwards, 27 times 3 is 81 and 300 reduced by 81 is 219.
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What is the image point of (2, 4) after a translation left 4 units and down 1 unit?
alexandr402 [8]

Answer:

-2,3

Step-by-step explanation:

because you are going to the left you would end up getting -2 for the x and since you are going one down you would have 3 for the y.

7 0
4 years ago
What is the answer to 7(2x + 9)
Damm [24]

Answer:

14x + 63

Step-by-step explanation:

7(2x+9)\\\\14x+63\\\\\left \{ {{7*2x=14x} \atop {7*9=63}} \right.

Hope this helps.

7 0
3 years ago
Find the product and sum of the roots of the equation:<br> 2x^2-9x-10=0
BabaBlast [244]

Answer:

<h3>           sum of the roots:    x_1+x_2=4\frac12</h3><h3>           product of the roots:     x_1x_2=-5             </h3><h3> Step-by-step explanation:</h3>

2x^2-9x-10=0\quad\implies\quad a=2\,,\ b=-9\,,\ c=-10

b^2-4ac=(-9)^2-4(2)(-10)=81+80=161>0

From Vieta's formulas applied to quadratic polynomial we have:

if    b^2-4ac\geqslant0   then

sum of roots:    x_1+x_2=-\dfrac ba=-\dfrac{-9}2=4\frac12

product of the roots:     x_1x_2=\dfrac ca=\dfrac{-10}2=-5

3 0
3 years ago
An aquarium holding African cichlids is 4 inches higher than it is wide. Its length is 30 inches, and its volume is 4200 cubic i
artcher [175]
H = w + 4 ;
V = h × w × l ;
Then, 4200 = ( w + 4 ) × w × 30 ;
4200 ÷ 30 = ( w + 4 ) × w  ;
140 = ( w + 4 ) × w  ;
w^2 + 4w - 140 = 0 ;
<span><span> <span>For </span><span>ax^2 + bx + c = 0</span><span>, the value of </span>x<span> is given by:</span></span>  <span>  ;
In our case, a = 1 ; b = 4 ; c = - 140 
Roots are - 14 and 10 ;
The correct answer is w = 10inches because w > 0 ;
Finally, h = 14 inches .</span></span>
8 0
4 years ago
Please try to answer before 1:20 pm!!! thank you
VMariaS [17]

I’m not sure but I think it’s C

4 0
4 years ago
Read 2 more answers
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