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MA_775_DIABLO [31]
2 years ago
14

−4x−2 + 3y0 if x = 2 and y = 5

Mathematics
1 answer:
Kazeer [188]2 years ago
5 0

Hey there!

-4x^-2 + 3y^0

= -4(2)^-2 + 3(5)^0

= -4(1/4) + 3(5)^0

= -1 + 3(5^0)

= -1 + 3(1)

= -1 + 3

= 2

Therefore, the answer should be: 2

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

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Makovka662 [10]
It might be 9 if it's not 6 ...but I can't see how it wouldn't be 6?
7 0
3 years ago
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- 4|7x + 2|=32<br><br> Please help, absolute value!
Nana76 [90]

Answer:

x= 6/7 or x = −10/7

Step-by-step explanation:

Let's solve your equation step-by-step.

4(|7x+2|)=32

Step 1: Divide both sides by 4.

4(|7x+2|)/4 =32/4

|7x+2|=8

Step 2: Solve Absolute Value.

|7x+2|=8

We know either 7x+2=8 or 7x+2=−8

7x+2=8 (Possibility 1)

7x+2−2=8−2 (Subtract 2 from both sides)

7x/7 = 6/7

(Divide both sides by 7)

7x/7= 6/7

x= 6/7

7x+2=−8 (Possibility 2)

7x+2−2=−8−2 (Subtract 2 from both sides)

7x/7 = −10/7

(Divide both sides by 7)

x= −10/7

Answer:

x= 6/7 or x = −10/7

3 0
3 years ago
alejandro solved the equation 5(7x^2-2)-8=3. He wrote 5(7x^2-2)=11 as his first step. Which property justifies his first step?
Dmitrij [34]
The property is inverse operation because he add 8 to both side.
6 0
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Three types of tickets for a football game are​ available: sidelines,​ goal-view, and​ upper-deck. The sidelines tickets cost ​$
Simora [160]

Answer:

Upper deck = $38

Goal View = $63

Sidelines = $88

Step-by-step explanation:

Represent

- Sidelines with S

- Goal-view with G

- Upper-deck with U

We have that:

S = 25 + G

S = 50 + U

G = 2U - 13

Required

Solve for S, G and U

Substitute 25 + G for S in the second equation

25 + G = 50 + U

Make G the subject

G = 50 -25+ U

G = 25+ U

Substitute 25 + U for G in the third equation

25 + U = 2U - 13

Collect Like Terms

U - 2U = -13 - 25

-U = -38

U = 38

Substitute 38 for U in G = 25+ U

G = 25 + 38

G =63

Substitute 63 for G in S = 25 + G

S = 25 + 63

S = 88

3 0
3 years ago
Find (f*g)(x) for f (x) = 3x^2 and g (x) = 5-x
ludmilkaskok [199]
(F*g) means f ( g(x) ) . Knowing this we can say
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= 3 (5-x)(5-x)
=
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