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STatiana [176]
2 years ago
9

Solve the following quadratic function

Mathematics
1 answer:
earnstyle [38]2 years ago
4 0

Answer:

x = 10/7 or x = -10/7

Step-by-step explanation:

By using the completing the squares method, we have to divide the coefficient of the x term by 2, square it and add to both sides

From what we have here, the coefficient of the x term is 0

Thus, we have it that;

0 = 100 - 49x^2

We can proceed to use the difference of two squares here;

Whereby;

a^2 - b^2 = (a-b)(a + b)

0 = (10-7x)(10+7x)

10 - 7x = 0 or 10 + 7x = 0

7x = 10 or 7x = -10

x = 10/7 or x = -10/7

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The local park will create a platform made of concrete. Determine the volume of the composite solid.
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2 years ago
8) The sides of a flower garden are shown in the diagram below. What is the perimeter of the flower garden? 4m 2 m​
jeka94

Answer:

18.28 m

Step-by-step explanation:

Given the flower garden in the question :

The shape is composite and can be divided into 2 semicirles and rectangle

The perimeter of a semicircle is the Circumference of the semicircle = πr

Hence, 2 semicirles = 2πr

Radius of semicircle = 2/2 = 1

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The perimeter of rectangle; length and width are 6m and 2 m respectively :

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8 0
2 years ago
Find the value of x.
ehidna [41]

Answer:

x = 25

Step-by-step explanation:

We know that the remaining angles add up to 90°, because the right angle (triangles have 180° total.)

2x + 15 + x = 90 | Given

3x + 15 = 90 | Combine x

3x = 75 | Subtract 15

x = 25

4 0
2 years ago
Please help don't understand how to do this, show steps
Anit [1.1K]
First get what equals 20
6 0
3 years ago
Let f(x)=-2x+7 and g(x)=x^2+9 find f(5)+g(5)
trapecia [35]
Substitute 5 into both the equations...
-2 (5)+7=-3
5^2+9=34

-3+34=31
hope this helpsss
7 0
3 years ago
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