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LekaFEV [45]
4 years ago
8

Please help PLEASE I really need help with this question

Mathematics
1 answer:
Semenov [28]4 years ago
4 0

Answer:

f(-4) = 9

Step-by-step explanation:

To find which expression to use, see which one x = -4 fits in. That is <em>x² - 5</em>, since -4 < 3.

Then, plug in the number: (-4)² - 5

Square: 16 - 5

Subtract: 9

f(-4) = 9

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Which of the numbers given below is an irrational number ?
Temka [501]

Answer:

<h2>2.14367............. is a irrational number.</h2>
5 0
3 years ago
Find the lateral and surface area of a cone with an altitude of 5 and a slant height of 91/2 feet
GuDViN [60]

Answer:

sry i cant i to dubm need points tho

Step-by-step explanation:

4 0
3 years ago
Please help me work plz
xxTIMURxx [149]

Answer:

Yes

Step-by-step explanation:

<u>7^2 + 4x</u>:

Fill in for x :

7^2+4(2)

solve:

49+8

=57

<u>4x+(7 x 7)</u>:

Fill in for x:

4(2) + (7 x 7)

solve:

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Thus, the correct answer is yes

3 0
4 years ago
A pair of equations is shown below: y = 7x − 8 y = 5x − 2 Part A: Explain how you will solve the pair of equations by substituti
Alexus [3.1K]
Part A) If would probably be smart to use substitution because y is already solved for, so we can substitute the value of y as a function of x into the other equation.
y=7x-8
y=5x-2

7x-8=5x-2
    +8     +8
-----------------
7x=5x+6
-5x  -5x
----------------
2x=6
/2   /2
-----------
x=3

y=7x-8
y=21-8
y=13

Part B) The lines will intersect at point (3, 13), because idk it just makes sense
4 0
3 years ago
What is the simplified form of square root of 400 to the 100th power ?
lisov135 [29]

Answer:

‭1.267650600228229401496703205376e+130‬

Step-by-step explanation:

√400 =20

20¹⁰⁰ = ‭1.267650600228229401496703205376e+130‬

Hope this helps!

6 0
3 years ago
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