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maria [59]
2 years ago
8

How do I do this? (3x^2+8)-(2x^2+1) So first I add like terms? 5x^2 + 8 + 1

Mathematics
1 answer:
Gemiola [76]2 years ago
3 0
<span>   (3x</span>² <span>+ 8) - (2x</span>² <span>+ 1)
= </span>3x² + 8 - 2x² - 1
= 3x² - 2x² + 8 - 1
= x² + 7
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1) Original price of a goldfish: $7.70<br>Discount: 30%​
Leni [432]

Answer:

$5.39

Step-by-step explanation:

In order to solve for this equation, we are going to multiply 7.70 by 0.3 to find how much money was taken which was 2.31.

Subtract2.31 from 7.70 to recieve your new price :)

7.70*0.3=2.31\\7.70-2.31=5.39

Hope this Helps!

8 0
3 years ago
Write the equation of a function whose parent function, F(x)=x+5,is shifted 3units to the right
eduard
Got this and not sure but best luck with your studying

6 0
3 years ago
Read 2 more answers
Every day, the number of network blackouts has a distribution (probability mass function)
boyakko [2]
Expected Mean, E(X), is obtained by multiplying each pair of x and its P(x) and add up the answers

E(X) = (0×0.7) + (1×0.2) + (2×0.1) = 0.4

The formula to calculate the variance, Var(X), is given by E(X)² - (E(X))²

E(X²) = (0²×0.7) + (1²×0.2) + (2²×0.1) = 0+0.2+0.4 = 0.6
(E(X))² = (0.4)² = 0.16

Var(X) = 0.6 - 0.16 = 0.44

Translating these answers into the context we have

E(Y) = 0.4×500 = $200
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3 0
3 years ago
The composite figure is made up of three simpler shapes. What is the area of the figure?
OlgaM077 [116]

Answer:

C) 55 cm^2

Step-by-step explanation:

(12x3)+(8x2)+(1/2)(3)(2) = 55

6 0
2 years ago
Find [h(x) +m(x)]-[h(x)-m(x)]<br> H(x)=1/3x3/3 3x2+9x-2<br> M(x)=13 3/5x+6x3-2x2-4x
Andre45 [30]

Answer:

\frac{276}{5}-8x)

Step-by-step explanation:

We are given with

H(x)=1/3x3/3 3x2+9x-2

And

M(x)=13 3/5x+6x3-2x2-4x

And asked to determine

[h(x) +m(x)]-[h(x)-m(x)]

Opening the second parenthesis

h(x) +m(x)-h(x)+m(x)

As we subtracted the second bracket, the sign get reversed.

As h(x) has opposite signs , they get cancelled

h(x) +m(x)-h(x)+m(x)

=2m(x)

=2(13\tfrac{3}/{5}x+6x3-2x2-4x)

=2(\frac{13 \times 5 + 3}{5}+18-4-4x)

=2(\frac{68}{5}+14-4x)

=2(\frac{68+70}{5}-4x)

=2(\frac{138}{5}-4x)

=\frac{276}{5}-8x)

7 0
3 years ago
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