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alisha [4.7K]
3 years ago
13

Are all of these four right ? If not,plz help

Mathematics
1 answer:
abruzzese [7]3 years ago
6 0

I think 3 is actually 0

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> Which expression is equivalent to 1/3b - 7
LiRa [457]

Answer:

option 2

Step-by-step explanation:

1/3(b-21)= 1/3b - 7

1/3 of -21 is -7

7 0
3 years ago
Read 2 more answers
3x - 2x^2 + 7 - 3x^2
inn [45]
3x-2x^2+7-3x^2
=3x-2x^2-3x^2+7
=3x-5x^2+7
=-5x^2+3x+7 that’s how it’s solved and that’s the answer as well. Come back for help
7 0
3 years ago
The sum of two numbers is four and their product is ten. If one number is x, write an expression for the other number ​
lyudmila [28]

Answer:

4y - y^2 = 10

Step-by-step explanation:

Let x and y be the two numbers

x+y = 4

xy = 10

Taking the first equation and solving for x

x = 4-y

Substituting this into the second equation

(4-y) *y = 10

4y - y^2 = 10

3 0
4 years ago
Five friends split the rent of an apartment.
Sophie [7]

Answer:

each person pays $190

all together the rent is $950

Step-by-step explanation:

240 - 50 = 190

190 x 5 = 950

6 0
3 years ago
Let f(x)=-2x-7 and g(x)=-4+6 find (g°f)(-5)
Korolek [52]

Answer:

-59

Step-by-step explanation:

g(-5) = -4*(-5)+6 = 26

f(g(-5)) = f(26) = -2*26 - 7 = -59

8 0
3 years ago
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