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Oxana [17]
3 years ago
15

If f(x)=5x+1 and g(x)=2f(x)+5 then g(-1)=

Mathematics
1 answer:
ollegr [7]3 years ago
4 0
We know f(x)=5x+1. Plug in f(x) in the g(x) function.
We get g(x)=2(5x+1)+5 Distribute the 2 to 5x and 1.
g(x)=10x+2+5
Simplify to get g(x)=10x+7
Now, we plug in -1 for x.
g(-1)=10(-1)+7
g(-1)=-10+7
g(-1)=-3 
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Two sides of a triangle measure 9 cm and 23 cm. Which could be the measure of the third side of the triangle?
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Hello,

Let's be x the length of the 3 side (9,x,23) ==>x>0

Using inequality triangular:

9<x+23==>x>9-23==>x>-14 (done)
x<9+23==>x<32
23<x+9==>x>14

SO 14<x<32


8 0
3 years ago
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Yes by SAS

Step-by-step explanation:

If you look at the triangles they have 2 side lenght in common (and since it is a right triange they have all the sides in commmon) and they share an angel

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2 years ago
Which of the following is NOT between -7 and -4 on the number line?
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-7.2 is NOT between -7 and -4 on the number line.

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8 0
2 years ago
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Best and Correct answer gets BRAINLIEST!!!
Karo-lina-s [1.5K]

Answer:

The constant of proportionality (k) is 1/5.

Step-by-step explanation:

The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other.

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2 years ago
1. Write the interval shown on the number line
shusha [124]

Answer:

x\geq 5

\{x\  |\  x \geq 5\}   OR {5, 6, 7, 8, .....}

Step-by-step explanation:

First of all, let us have a look at the interval shown on the number line and try to understand it properly.

The number line shows positive numbers starting from 3 that means numbers indicated will be positive numbers.

The number highlighted starts from 5 and there is filled circle at 5.

So, 5 is included in the interval.

The arrow is from 5 towards 8 and so on..

That means Numbers greater than or equal to 5 are represented by the interval.

So, writing as an inequality

Let x represents one of the numbers.

Hence, inequality can be written as:

x\geq 5

Using the set notation:

\{x\  |\  x \geq 5\}

OR

{5, 6, 7, 8, .....}

3 0
3 years ago
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