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Finger [1]
3 years ago
6

The sum of three consecutive counting numbers is 15 more than the greatest

Mathematics
1 answer:
Alex777 [14]3 years ago
7 0

Answer:

9

Step-by-step explanation:

x+x+1+x+2 = 15+x+2

3x+3=x+17

3x=x+14

2x=14

x=7

7+8+9=24

9+15 = 24

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Which multiplication properties is 1/5•5
allsm [11]

See picture for solution to your problem.

8 0
3 years ago
Select the two values of x that are roots of this equation.<br> 2x^2+ 1 = 5x
iren [92.7K]

Answer:

\frac{5+\sqrt{17}}{4},      \frac{5-\sqrt{17}}{4}

Step-by-step explanation:

One is asked to find the root of the following equation:

2x^2+1=5x

Manipulate the equation such that it conforms to the standard form of a quadratic equation. The standard quadratic equation in the general format is as follows:

ax^2+bx+c=0

Change the given equation using inverse operations,

2x^2+1=5x

2x^2-5x+1=0

The quadratic formula is a method that can be used to find the roots of a quadratic equation. Graphically speaking, the roots of a quadratic equation are where the graph of the quadratic equation intersects the x-axis. The quadratic formula uses the coefficients of the terms in the quadratic equation to find the values at which the graph of the equation intersects the x-axis. The quadratic formula, in the general format, is as follows:

\frac{-b(+-)\sqrt{b^2-4ac}}{2a}

Please note that the terms used in the general equation of the quadratic formula correspond to the coefficients of the terms in the general format of the quadratic equation. Substitute the coefficients of the terms in the given problem into the quadratic formula,

\frac{-b(+-)\sqrt{b^2-4ac}}{2a}

\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}

Simplify,

\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}

\frac{5(+-)\sqrt{25-8}}{4}

\frac{5(+-)\sqrt{17}}{4}

Rewrite,

\frac{5(+-)\sqrt{17}}{4}

\frac{5+\sqrt{17}}{4},      \frac{5-\sqrt{17}}{4}

8 0
3 years ago
**PLEASE HURRY**
kipiarov [429]

Step-by-step explanation:

so go to safari and look it up !!!

7 0
2 years ago
Justin wants to buy a new bike that costs $115. He has $40 and plans to
-BARSIC- [3]

15x+40=115

15x means 15 per week solve for x if you want to know how many weeks 40 is what he has only once

8 0
3 years ago
The graph shows the relationship between a gift card balance and the number
faltersainse [42]

Answer:

3

Step-by-step explanation:

We can see that the graph is constant.=> the path of the dot/ the pattern is constant or not changing.

The balance was 18 when there were no visits.

It was 0 after 6 visits.

=>the amount spent on each visit is

Balance/number of visits= 18/6= $3

This can clearly be seen on the graph.

It may not work with a graph where the patter is not constant/ keeps on changing.

5 0
3 years ago
Read 2 more answers
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