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Aliun [14]
2 years ago
8

Solve the quadratic equation: -x^2+8x=7

Mathematics
1 answer:
Burka [1]2 years ago
5 0

Answer:

Step-by-step explanation:

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Four times the larger of two numbers is equal to seven times the smaller the sum of the numbers is 22 find the numbers
Alexus [3.1K]

Answer:

8 and 14

Step-by-step explanation:

X + Y = 22

X= 22-Y

4X= 7Y

4(22-Y) = 7Y

88-4Y=7Y

88= 11Y

8=Y

X= 22-Y= 22-8=14

4 0
3 years ago
What is the value of A, B, and C?
Varvara68 [4.7K]

Answer: a's value is (6,8) B is (-3,7), and C is (-7,-2)

4 0
2 years ago
Determine the number of real solutions of -2x2 + 5x - 3 = 0.
andrew11 [14]

-2x^2 + 5x -3 =0

Find the discriminate:

In the given formula a = -2, b = 5 and c = -3

The discriminate is found using the formula b^2 - 4(ac)

Replace the letters with their values:

5^2 - 4(-2*-3)

25 - 4*6

25-24 = 1

When the discriminate is greater than or equal to 0, there are two real solutions.

The answer is c) 2

4 0
3 years ago
A local citizen wants to fence a rectangular community gardenn. The length of the garden should be at least 110ft,and the distan
Arte-miy333 [17]
The question is incorrect
the correct question is
A local citizen wants to fence a rectangular community garden. The length of the garden should be at least 110 ft,and the distance around should be no more than 380 ft. Write a system of inequality that model the possible dimensions of he garden. Graph the system to show all possible solutions

let
x---------------> t<span>he length of the garden
</span>y---------------> the wide of the garden

we know that
x>=110
2x+2y <=380---------------> x+y <= 190

Part A) <span>Write a system of inequality that model the possible dimensions of he garden
</span>
the answer part A) is
x>=110
x+y <= 190


Part B) <span>Graph the system to show all possible solutions

using a graph tool
see the attached figure
the solution is the triangle show in the figure

</span><span>the possible solutions of y (wide) would be between 0 and 80 ft
</span>the possible solutions of x (length) would be between 110 ft and 190 ft

5 0
3 years ago
For 20 points, 5 stars, and a thanks, can some one answer these 5 questions about percent increase and decrease?
Galina-37 [17]

Answer:

380; 5% increase is 399

39; 33% decrease 26.13

48; 15% increase 55.2

3,000; 325% increase 12,750

160; 20% decrease 128

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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