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jeka94
3 years ago
10

7(x−4)2−18=10 plsss help

Mathematics
2 answers:
Zigmanuir [339]3 years ago
8 0

Answer:

7(x - 4) {}^{2}  - 18 = 10 \\ 7 {x}^{2}  - 56x + 112 - 18 - 10 = 0 \\ 7x {}^{2}  - 56x + 84 = 0 \\ (x -  6)(x - 2) = 0 \\ x = 2 \: and \: 6

aleksandrvk [35]3 years ago
6 0

Answer:

7(x-4)2-18=12

x=6

Step-by-step explanation:

7(x-4)2-18=10

simplify:

14x-74=10

group all constants on the right side of the equation:

14z-74=10

14x-74+74=10+74

14x=10+74

14x=84

isolate the x:

14x=84

14x/14 = 84/14

x=84/14

x=6

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3 years ago
Graph the linear equation and answer each of the following questions. y>2/3 x-2 What is the y-intercept? What is the slope (i
lozanna [386]

Answer:

(i)

y-intercept is -2

(ii)

slope is \frac{2}{3}

(iii)

slope is positive

(iv)

another point is (3,0)

Step-by-step explanation:

We are given equation as

y=\frac{2}{3} x-2

now, we can compare it with slope intercept form of line

y=mx+b

where

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b is y-intercept

we get

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So,

(i)

y-intercept is -2

(ii)

slope is \frac{2}{3}

(iii)

we can see that

m=\frac{2}{3}

is a fraction and positive

so, slope is positive

(iv)

we can select any random value of x and find y

that will give us second point

Let's assume

x=3

y=\frac{2}{3}\times 3-2

y=2-2

y=0

So, another point is (3,0)

(v)

Graph:


4 0
4 years ago
Help plzz ill gve brailiest
kogti [31]

Answer:

The 2nd answer is the correct

Step-by-step explanation:

Hope this helps:)

3 0
3 years ago
One-third of a number is no less than six<br>A. x&lt;18<br>B. x&lt;2 <br>C. x&gt;2<br>D. x&gt;18​
polet [3.4K]

Answer:

X<2

Step-by-step explanation:

1/3x of a number not less then six =1/3x multiplied by let's say< 6. I. E x1/3 x <6=x<2

7 0
3 years ago
What is 1.3*10^4 in standard notation<br> A. 1.3^4<br> B. 13,000<br> C. 0.00013<br> D. 1300
Lelechka [254]

Answer:

13000

Step-by-step explanation:

If you go 4 steps forward at first, it is 13. Add three zeros and then it is at 10^4 and 13000

One zero added is one power in scientific notation

3 0
3 years ago
Read 2 more answers
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