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Akimi4 [234]
3 years ago
9

Can someone help me with number 7 the circled one?

Mathematics
1 answer:
Ivenika [448]3 years ago
5 0
Your answer:
<span>Equation:
x(x+1) = 2(x+1)+77
-----

x^2+x = 2x+79
x^2-x-79 = 0
------
This quadratic does not have an integer solution.</span>
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Jina wants to measure the width of a river. She marks off two right triangles, as shown in the figure. The base of the larger tr
Brilliant_brown [7]

Answer:

width of a river = 45m

Step-by-step explanation:

ration and proportion

let x = width of a river

x            20.9 m

------  =    --------

56 m       26 m

x = (20.9 * 56) / 26

x = 45 m

therefore the width of a river is 45 m

7 0
4 years ago
Do I have it right ?
Deffense [45]

Answer:

No

Step-by-step explanation:

The answer would be B. because the father you go down the right the more greater it will be, so -7 would be less than -3 and -6 would be less than -5. Do you get it?

Hope this helps :)

6 0
3 years ago
Read 2 more answers
Find the slope of the Line <br> A -1/2<br> B 2<br> C -2<br> D 1/2
never [62]

Answer:

-1/2

Step-by-step explanation:

(0,1) , (2,0)

\frac{y2-y1}{x2-x1} = \frac{0-1}{2-0} = \frac{-1}{2}

8 0
3 years ago
Natalie paid $14.99 to join an online music service if she purchases non-songs each month at a cost of $.99 per song what will b
Liula [17]

Answer: The total amount is $14.99+4.95x.

Step-by-step explanation:

Let the number of songs be 'x'.

Cost of each song = $0.99

Amount paid to join an online music service = $14.99

Number of months = 5

So, According to question, we get that

Total amount =14.99+0.99\times 5\times x=14.99+4.95x

Hence, the total amount is $14.99+4.95x.

7 0
4 years ago
The base of a ladder is placed 5 feet away from a 13 foot tall wall. What is the minimum length ladder needed to reach the top o
zimovet [89]
Apply the Pythagorean theorem

a^2 + b^2 = c^2

a = 5, b = 13.

5^2 = 25, 13^2 = 169

25 + 169 = 194

square root 194 = 13.928, rounded to nearest foot = 14 ft. 

The minimum ladder length required to reach the top of the wall = 14 ft. 
  
Download docx
4 0
3 years ago
Read 2 more answers
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