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gregori [183]
3 years ago
11

Help with this please

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
3 0
<h2>Given:-</h2>

y = 2x + 50

x = 5

So,

y = 2(5) + 50

y = 10 + 50

y = 60

Hence, option B, y = 60, is correct.

<h2>Hope it helps...</h2>
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Graph f(x) = x2 + 2x - 3, label the function’s x-intercepts, y-intercept and vertex with their coordinates. Also draw in and lab
Semenov [28]
<h2>Answer with explanation:</h2>

The given function : f(x)=x^2+2x-3

Using completing the squares, we have

f(x)=x^2+2x+1-1-3        [∵ (x+1)^2=x^2+2x+1]

f(x)=(x+1)^2-4      (1)

Comparing (1) to the standard vertex form f(x)=(x-h)^2+k , the vertex of function is at (h,k)=(-1,-4)

For x-intercept, put f(x)=0 in (1), we get

0=(x+1)^2-4\\\\\Rightarrow\ (x+1)^2=4    

Square root on both sides, we get

x+1=\pm2\\\\x+1=-2\ or\ \ x+1=2\\\\=x=-3\ \ or\ x=1

∴ x intercepts : x= (-3,0) and (1,0)

For y-intercept put x=0 in (1), we get

f(1)=(1)^2-4=1-4=-3  

∴ y intercept : (0,-3)

Axis of symmetry : \dfrac{-b}{2a}

In f(x)=x^2+2x-3 , a=1 and b=2

Axis of symmetry=\dfrac{-2}{2(1)}=-1

5 0
3 years ago
1. Find the vertex of the following quadratic equations:<br> a) f(x) = (x – 4)2 + 7
RSB [31]

Answer: It is not possible to find the vertex of the stated equation as it is in the form of f(x) = mx + b, a linear equation.

Step-by-step explanation:

Being in the form f(x) = mx + b, it is not possible to find a vertex due to the fact that there is none. This is because when an equation is written in the linear form it is representing a line not a parabola.

Given a parabola it is possible to find a vertex because in that case there is one.

7 0
3 years ago
Read 2 more answers
-4 ^ 3 * 2 / 8 * 20 + 125​
attashe74 [19]
The answer is negative one hundred 95 or -195
3 0
3 years ago
Guys i’m begging someone help me please!!!!
IRISSAK [1]

Answer:

x= 35

Step-by-step explanation:

supposing we are finding x, we know that the line in the middle is the dimeter. so we know its a semicircle with an arc of 180 degrees. 180-110=70 divide that by two to get x which is 35.

4 0
3 years ago
Read 2 more answers
What is the simplified base of the function f(x) = One-fourth (Root Index 3 StartRoot 108 EndRoot) Superscript x?
Rainbow [258]

Answer:

The base is: 3 \sqrt[3]{4}

Step-by-step explanation:

Given

f(x) = \frac{1}{4}(\sqrt[3]{108})^x

Required

The base

Expand 108

f(x) = \frac{1}{4}(\sqrt[3]{3^3 * 4})^x

Rewrite the exponent as:

f(x) = \frac{1}{4}(3^3 * 4)^\frac{1}{3}^x

Expand

f(x) = \frac{1}{4}(3^3^\frac{1}{3} * 4^\frac{1}{3})^x

f(x) = \frac{1}{4}(3 * 4^\frac{1}{3})^x

Rewrite as:

f(x) = \frac{1}{4}(3 \sqrt[3]{4})^x

An exponential function has the following form:

f(x)=ab^x

Where

b \to base

By comparison:

b =3 \sqrt[3]{4}

So, the base is: 3 \sqrt[3]{4}

4 0
3 years ago
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