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3 years ago

Given that f(x)= x^2+4, evaluate f(-2)

Mathematics

1 answer:

Evgen [1.6K]3 years ago

5 0

Answer:

f=-x^2/2-2

Step-by-step explanation:

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Evaluate the expression 7 + 10 /5

Anestetic [448]

Answer:

Step-by-step explanation:

Use PEMDAS (Parenthesis, exponent, multiplication, devision, addition, subtraction)

So....

7 + 2 .... Simplified ( 10/5 =2)

9 ..... Added

Hope this helps!

4 0

3 years ago

Read 2 more answers

Evaluate: g(x) = 3•2^x+2 + 3 g(3)

sertanlavr [38]

If the 3 is supposed to be replaced by any x's, then the answer would be 29 I believe.

4 0

3 years ago

How much interest would be paid on $75 at 5% interest rate for 2 years??

V125BC [204]

Answer:

Step-by-step explanation:

Step one: because fractions are out of 100% you do

5%+100%= 105

105 divide by 100 which is equal to 1.05

Step two: it’s says two year so what you do is times the amount by the number you got

75x $1.05{2}$

=82.68 answer

4 0

3 years ago

Help !! Please I can’t find the answer

SVETLANKA909090 [29]

Answer:

$\large\boxed{r^2=(x+5)^2+(y-4)^2}$

Step-by-step explanation:

The equation of a circle:

$(x-h)^2+(y-k)^2=r^2$

(h, k) - center

r - radius

We have diameter endpoints.

Half the length of the diameter is the length of the radius.

The center of the diameter is the center of the circle.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the given points (-8, 2) and (-2, 6):

$d=\sqrt{(6-2)^2+(-2-(-8))^2}=\sqrt{4^2+6^2}=\sqrt{16+36}=\sqrt{52}$

The radius:

$r=\dfrac{d}{2}\to r=\dfrac{\sqrt{52}}{2}$

The formula of a midpoint:

$\left(\dfrac{x_1+x_2}{2},\ \dfrac{y_1+y_2}{2}\right)$

Substitute:

$x=\dfrac{-8+(-2)}{2}=\dfrac{-10}{2}=-5\\\\y=\dfrac{2+6}{2}=\dfrac{8}{2}=4$

$(-5,\ 4)\to h=-5,\ k=4$

Finally:

$(x-(-5))^2+(y-4)^2=\left(\dfrac{\sqrt{52}}{2}\right)^2\\\\(x+5)^2+(y-4)^2=\dfrac{52}{4}\\\\(x+5)^2+(y-4)^2=13$

5 0

3 years ago

Noelia has 144 role-playing cards. She and

scZoUnD [109]

Noelia has 216 cards after buying part of the set with her friends.

<h3>What is addition?</h3>

Combining items and counting them as a single, large group is done through addition.

Given that, Noelia has 144 role-playing cards.

Now, she bought 72 cards more, therefore, the number of cards Noelia has is:

144 + 72

= 216

Hence, Noelia has 216 cards after buying part of the set with her friends.

Learn more about the addition:

brainly.com/question/29560851

#SPJ1

7 0

1 year ago

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