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NARA [144]
2 years ago
4

Evaluate 2-(-4)+(-y) where y=7.

Mathematics
1 answer:
Zina [86]2 years ago
6 0

Answer: -1

Step-by-step explanation:

Let's plug in 7 for y:

2 - (-4) + (-y) --> 2 - (-4) + (-7), Now evaluate:

2 + 4 - 7 =

6 - 7 =

-1

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If f(x) = 4 – x^2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?
inna [77]

Answer:

23

Step-by-step explanation:

f(x)=4-x²

g(x)=6x

g(x)-f(x)=6x-(4-x²)

g(x)-f(x)=6x-4+x²

so, when (g-f)(3), it means that x=3

.:(g-f)(3)=6(3)-4+(3)²

= 18 - 4 +9

=14+9

=23

7 0
3 years ago
Evaluate F(1)
KonstantinChe [14]

ANSWER

B. 1

EXPLANATION

The given function is

f(x) =\left \{ {{x^{2} +3 (if) -5 \leq x< 1} \atop {x (if) 1 \leq x \leq 5 }} \right.

This is a piece-wise defined function.

We want to find f(1)

We substitute x=1 into f(x)=x because, 1 belongs to the interval,

1≤x≤5

f(1)=1

The correct answer is B.

8 0
4 years ago
Solve the inequality. 3 divided by 10 is greater than or equal to k minus the quantity 3 divided by 5 end of quantity
Mariana [72]

Inequality:

(3/10) ≥ k - (3/5)

Add 3/5 to both sides:

k ≤ (3/10) + (3/5)

Use LCD:

k ≤ (3/10) + (6/10)

Combine:

k ≤ 9/10
8 0
3 years ago
You take out a $32,000 loan. The amount that you must pay for your loan will increase at a rate of 4.5
seraphim [82]

Answer:

you owe $49,695 in total and $17,695 in interest alone

5 0
3 years ago
Winnie wrote the following riddle.I am a number between 60 and 100.My ones digit is two less than my tens digit.I am a prime num
Kazeer [188]

Answer:

79

Step-by-step explanation:

60<xy<100

y -2 =x


if it is prime

y cannot be even

so y could be      1,3,5,7,9

x would then be 9,1,3,5,7

but to be between 60 and 100

x must be 7 or 9

so the number must be 79 or 57

57 is not prime so

the number is 79

5 0
3 years ago
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