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Luden [163]
3 years ago
14

1.7a + 0.3a = 4/5 Please help....

Mathematics
2 answers:
muminat3 years ago
5 0

2a = 4/5

a = 4/5 / 2

a = 0.4

The answer is 0.4

pochemuha3 years ago
5 0

Answer:

The value of the equation is  a= \frac{2}{5} or 0.4

Step-by-step explanation:

Consider the provided equation.

We need to solve the equation for a.

1.7a + 0.3a = \frac{4}{5}

Add the like terms.

2a= \frac{4}{5}

Now divide both sides by 2.

\frac{2a}{2}= \frac{4}{5\times 2}

a= \frac{2}{5} or a= 0.4

Hence, the value of the equation is a= \frac{2}{5} or 0.4

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Across which Axis was point H reflected?
Vedmedyk [2.9K]

Answer:

X - axis

Step-by-step explanation:

H(9, - 1) \rightarrow H'(9, 1)

Since in the above reflection x coordinate remains the same and y-coordinate changes from 1 to - 1, hence point H is reflecting across X - axis.

4 0
3 years ago
How many liters of a 20% alcohol solution must be mixed with 60 liters of a 90% solution to get a 30% solution?
Alex17521 [72]
You would need to add 360L of the 20% ethanol solution. 
7 0
3 years ago
PHOTO ABOVE <br> (13x-57). (6x-10). Z. <br> Find the values of x and z
Lera25 [3.4K]
X=13 and z=112
you know that (13x-57) + (6x-10) = 180 since they are supplementary, so you will solve that. it will give you x=13. now that you know x, you can solve for z by plugging in 13 for x on 13(x)-57 since that and angle z are congruent. when you simplify, you will get z=112.
you can check your answer by doing (6x-10) +112=180. this is because they are supplementary. you should get x=13, and that is how you know you are right.
4 0
3 years ago
The first digit of two different numbers is in the hundred million's place. Both numbers contain the same digits. Can you determ
attashe74 [19]
Given situation: The first 2 digit of the 2 different numbers is in the hundred millions place.
Then both numbers also have the same digit.
Now, which is greater. Of the two numbers?
The answer would be the same. The same because they both have the place value of millions place and they also share the same digits.
Thus, I conclude the both different numbers have the same value.
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5 0
3 years ago
a carpenter has been asked to build an open box with a sqaure base. the sides of the box will cost $3 per m^2 and the base will
slamgirl [31]
<h2>Dimension of box is 2 m x 2 m x 1.33 m</h2>

Step-by-step explanation:

Let a be base side and h be the height.

Volume of box, V = a²h

The sides of the box will cost $3 per m² and the base will cost $4 per m². Cost for making is $48.

That is

                 4a² + 3 x 4 x a x h = 48

                 4a² + 12 a x h = 48

                 a² + 3 ah = 12  

                 h=\frac{12-a^2}{3a}

So volume is

                    V=a^2\times \frac{12-a^2}{3a}=4a-\frac{a^3}{3}

At maximum volume we have derivative is zero,

                    dV=4da-3\times \frac{a^2}{3}da\\\\0=4-a^2\\\\a=\pm 2

Negative side is not possible, hence side of square base is 2m.

Substituting in  a² + 3 ah = 12  

                           2² + 3 x  2 x h = 12  

                             h = 1.33 m

Dimension of box is 2 m x 2 m x 1.33 m

5 0
3 years ago
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