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schepotkina [342]
3 years ago
11

If f(x) = x + 1 and g(x) = 2x - 7, which expression is equivalent to [fo g|(3)?

Mathematics
1 answer:
Luden [163]3 years ago
8 0

Answer:

O (3 + 1)(2(3) -7)

Step-by-step explanation:

hope it helps you

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What is the factorization of 3x2 – 8x + 5?
Tanzania [10]

Answer:

(x-1)(3x-5)

Step-by-step explanation:

Factorize means convert and expression into multiple factors.

You have to find to factor that multiplied equals the original equation. Firts of all you split the expression of  square X into 3X an X, so you  guarantee that when you multiply 3X by X, the result is 3X^2.

After doing that, you need to think in numbers that equals the middle term (8X) and the constant (5).

-1 and -5 guarantee you that the multiplication of them results into +5, so you start with those numbers. Then you have to find where to put them in order to find the -8X.

-5 x X = -5X

-1 x 3X = -3X

And adding those two expresion you find the -8X that you need!

Please try to solve it multiplying term by term and check the final equation.

7 0
3 years ago
PLEASE PLEASE PLEASE HELP ME WITH THESE! Or I WILL FAIL!! PLEASE
Serga [27]
First ones 40 and I’m not sure bout the second one but through process of elimination either always or never cause nothing in math is uncertain or non existent
6 0
3 years ago
A family spends 1/10 of its annual income for housing, 1/4 for food and clothes, 1/5 for general expenses, and 2/15 for entertai
AlexFokin [52]
Add all the fractions together:
to do this find the lcd:
which is 60
1/10 = 6/60
1/4= 15/60
1/5= 12/60
2/15= 8/60
add them together
(6+15+12+8)/60
41/60 or C is the answer

6 0
2 years ago
Read 2 more answers
There are 100 runners entered in a marathon. How many different groups of three runners can finish in first, second, and third?
Lelu [443]
Any one of the runners could be 1st.
Every runner except for the one that was 1st could be 2nd.
Every runner that wasn't 1st or 2nd could be 3rd.

100*99*98=970200 groups.
This involves permutations because order does matter.

Hope this helps!
3 0
3 years ago
A Sociology student investigated the association between a country's Literacy Rate and Life Expectancy, and then drew the conclu
Gnom [1K]

Solution :

The term 'literacy rate' provides the ability of a person who is from a definite age group can read or write.

a). $R^2$ does not determine the rate at which the variable explains another, but it explains the amount the amount of variability in one of the variables as explained by the other variable.

b). The slope given provides an expected improvement but it cannot guarantee the improvement. The value may be less or it could be more also.

The regression model provides the prediction and not the actual values.

6 0
2 years ago
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