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Vikentia [17]
3 years ago
8

0.4 (-4.1 - 3.6b) - 7.9b + 1.59-7.7-5.75.73.6​

Mathematics
1 answer:
Elza [17]3 years ago
7 0

Answer:

−9.34b−4.15

Step-by-step explanation:

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Which equation matches these solutions? x = 5, -7
weqwewe [10]
(x-5)(x+7).
explanation:
(x-5)(x+7)=0
<=> x-5=0 or x+7=p
<=> x=5 or x=-7
4 0
3 years ago
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Hank's gas tank holds 18.5 gallons. If the tank has 6 gallons of gasoline in it, what percent of the tank is empty?
sergij07 [2.7K]

18.5 - 6 = 12.5 gallons empty

12.5 / 18.5 = 0.676

0.676 x 100 = 67.6%

Answer: 67.6%

8 0
2 years ago
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Write the two missing values to make these equivalent fractions correct : ?/3 = 8/12= 4/?
Elodia [21]
X/3 = 8/12
12 * x = 8 * 3
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8 0
3 years ago
What is 15 to the 5 power
inna [77]
15^5 is 759,375
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6 0
3 years ago
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Solve x'=5t(sqrt(x)) x(0)=1
LekaFEV [45]

Answer:

2\sqrt{x}=\frac{5t^2}{2}+2

Step-by-step explanation:

Given: \frac{\mathrm{d} x}{\mathrm{d} t}=5t\sqrt{x}\,,\, x(0)=1

Solution:

A differential equation is said to be separable if it can be written separately as  functions of two variables.

Given equation is separable.

We can write this equation as follows:

\frac{dx}{\sqrt{x}}=5t\,dt

On integrating both sides, we get

\int \frac{dx}{\sqrt{x}}=\int 5t\,dt

Formulae Used:

\int \frac{1}{\sqrt{x}}=2\sqrt{x}\,\,,\,\,\int t\,dt=\frac{t^2}{2}

So, we get solution as 2\sqrt{x}=\frac{5t^2}{2}+C

Applying condition: x(0) = 1, we get C=2

Therefore, 2\sqrt{x}=\frac{5t^2}{2}+2

8 0
3 years ago
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