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user100 [1]
3 years ago
10

What is x?0.6x+1.5=3.9

Mathematics
1 answer:
Digiron [165]3 years ago
3 0
0.6x + 1.5 = 3.9

0.6x = 3.9 - 1.5
0.6x = 2.4
x = 2.4 ÷ 0.6
x = 4
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What statement best describes the effect of replacing the function f(x)=2x-2 with the function g(x)=2x+3
madreJ [45]

You can easily see that

f(x) = g(x)-5

In fact, you have

g(x)-5 = 2x+3-5 = 2x-2 = f(x)

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f(x) \mapsto f(x)+k

result in a vertical translation, k units up if k>0, k units down if k

So, in this case, the graphs of f(x) and g(x) have the same shape, and they are vertically shifted 5 units apart, g(x) is higher and f(x) is lower.

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Determine the solution to the following system of linear equation: y=3x-2 y=-x+6
skad [1K]

Answer:

(2, 4)

Step-by-step explanation:

To solve this system, the easiest way would be to use the substitution method. You can simply plug in, or substitute the value of y from the second equation, which is -x + 6, into the first equation. So you would get:

-x + 6 = 3x - 2

6 = 4x - 2

8 = 4x

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To find y, just substitute the value of x, which is 2, into either equation:

y = 3(2) - 2

y = 6 -2

y = 4.

Make sure you write your answer as an ordered pair! So, the final answer is (2, 4). Hope that helped! :)

7 0
3 years ago
Two isosceles triangles are shown above. If b = 180-4a and a=35, What is the value of c?
Ymorist [56]

Answer:

a=35 given

b=40  

c=110

I couldn't complete see c. Please look at the picture to see what I assumed it to be.

Step-by-step explanation:

Hmmm... I guess a and b are not vertical.

We are given b=180-4a and a=35 so b=180-4(35)=180-140=40.

So b=40.

Isosceles triangles always have congruent base angles.  So let's call both of the base angles in the bottom triangle x.

That means x+x+40=180.

We need to solve this for x.

Combine like terms:

2x+40=180

Subtract 40 on both sides:

2x=140

Divide both sides by 2:

x=140/2

Simplify:

x=70

So I'm assuming that c and it's adjacent angle are sitting on a straightedge together which means 70+c=180.

70+c=180

Subtract 70 on both sides:

c=180-70

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4 0
3 years ago
1) Shannon and Kristoph are dividing numbers written in scientific notation.
mihalych1998 [28]

Answer:

<h3>(A)</h3>

The answers will have the same value, beacuse both scientific notations have the same coefficient, 4.2 and 1.4. Also, if you mentally subtract the exponents of those powers, you would have the same exponent. So, equal coefficient and equal exponent will give the same result.

<h3>(B)</h3>

The value of each expression can be found by dividing coefficients and powers.

\frac{4.2 \times 10^{9} }{1.4 \times 10^{4} }=3 \times 10^{9-4} = 3 \times  10^{5}

<h3>(C)</h3>

The value of each expression in standard form is

3 \times 10^{5}=300,000

Remember that standard form refers to the number without the ten-power.

5 0
4 years ago
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