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Hatshy [7]
3 years ago
9

What is the square root of 91?

Mathematics
2 answers:
kupik [55]3 years ago
7 0

The answer is 9.53939201417

nordsb [41]3 years ago
5 0

Answer:

approx 9.54

Step-by-step explanation:

9*9=81

10*10=100

^^those are the 2 closest perfect squares

91 is closer to 100

100-91=9 (first part of answer)

100-81= 19

9/19 = approx 0.54 (second part of answer)

9+ 0.54 =9.54

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Consider the quadratic function: y = 2x^2 + 7x + 10
arsen [322]

Answer:

y-intercept: 10

concavity: function opens up

min/max: min

Step-by-step explanation:

1.) The definition of a y-intercept is what the resulting value of a function is when x is equal to 0.

Therefore, if the function's equation is given, to find y-intercept simply plug in 0 for the x-values:

y = 2x^2+7x+10 = 2(0)^2 + 7(0)+10 = 2(0) + 0 + 10 = 0 + 10 = 10

y intercept ( f(0) )= 10

2.) In order to find concavity (whether a function opens up or down) of a quadratic function, you can simply find the sign associated with the x^2 value. Since 2x^2 is positive, the concavity is positive. This is basically possible, since it is identifying any reflections affecting the y-values / horizontal reflections.

3.) In order to find whether a quadratic function has a maximum or minimum, you can use the concavity of the function. The idea is that if the function opens downwards, the vertex would be at the very top, resulting in a maximum. If a function was open upwards, the vertex would be at the very bottom, meaning there is a minimum. Like the concavity, if the value associated with x^2 is positive, there is a minimum. If it is negative, there is a maximum. Since 2x^2 is positive, the function has a minimum.

7 0
2 years ago
Why are the units of area squared? How does this help us remember the formula for area of a circle?
svp [43]

Answer:

Area is a size measurement of a two-dimensional surface. Those dimensions (x and y) are perpendicular to each other, and thats why it is squared.

8 0
2 years ago
Parallelogram R S T U is shown. Angle S is 70 degrees.
olya-2409 [2.1K]

Answer:

<h3>B. m∠R = 110°, m∠T = 110°, m∠U = 70°</h3>

Step-by-step explanation:

The opposite angles of the parallelogram are the same.

From the diagram;

<S = <U and <R = <T

Given

<S = 70°

Since <S = <U, hence <U = 70°

Since the sum of angles in a quadrilateral is 360 degrees, hence;

<R+<S+<T+<U = 360

Since <R = <T, then;

<Y+<S+<T+<U = 360

2<T + 70+70 = 360

2<T = 360-140

2<T = 220

<T = 220/2

<T = 110°

Since <T = <R, then < R = 110°

Hence m∠R = 110°, m∠T = 110°, m∠U = 70°. Option B is correct

4 0
3 years ago
Read 2 more answers
Simplify 5(2y+6)+(-24y)
JulsSmile [24]

Answer:

-14y + 30

Step-by-step explanation:

Tell me if I am wrong but I think this is it.

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3 years ago
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Three consecutive odd integers add up to 39.
elena-14-01-66 [18.8K]

Answer:

11 , 13 , and 15

Step-by-step explanation:

6 0
3 years ago
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