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Ostrovityanka [42]
3 years ago
11

What's the equivalent algebraic expression?

Mathematics
1 answer:
densk [106]3 years ago
3 0
-10c+70, just distribute the the -10 to everything in the expression
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If there are 420 students in a school.if 40% of them are girls find the number of girls​
pshichka [43]

Answer:

168 girls

Step-by-step explanation:

420 × 0.40

= 168

4 0
3 years ago
Read 2 more answers
Line a slope of -2 and passes throughlthe point (- 5, - 2)
Rzqust [24]

Answer:

y = -2x -12

Do you want me to explain?

5 0
2 years ago
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I need help please either discord me the answer at F4deG0d#0988 or do it on here cause this is important.
algol13

Answer:

x= 12.5

So

2x = 25

4x = 50

6x = 75

Step-by-step explanation:

line CG is 180 degrees, so 12x + 30 = 180

x = 12.5

7 0
3 years ago
Tara has 3/4 cup of ice cream. How many 1/5 -cup servings are in 3/4 cup of ice cream?​
saw5 [17]

Answer:

4/15

Step-by-step explanation:

because 1/5÷3/4=4/15

8 0
3 years ago
(1+x^2)dy/dx+2xy-4x^2=0 bu using Bernoulli's Equation
erastovalidia [21]
Not of Bernoulli type, but still linear.

(1+x^2)\dfrac{\mathrm dy}{\mathrm dx}+2xy=4x^2

There's no need to find an integrating factor, since the left hand side already represents a derivative:

\dfrac{\mathrm d}{\mathrm dx}[(1+x^2)y]=(1+x^2)\dfrac{\mathrm dy}{\mathrm dx}+2xy

So, you have

\dfrac{\mathrm d}{\mathrm dx}[(1+x^2)y]=4x^2

and integrating both sides with respect to x yields

(1+x^2)y=\displaystyle\int4x^2\,\mathrm dx
(1+x^2)y=\dfrac43x^3+C
y=\dfrac{4x^3}{3(1+x^2)}+\dfrac C{1+x^2}
7 0
3 years ago
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