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satela [25.4K]
3 years ago
13

40 is 50% of what number? A. 20 B. 40 C. 60 D. 80

Mathematics
2 answers:
Alex787 [66]3 years ago
5 0

Answer:

D. 80

Step-by-step explanation:

multiply 40 by 2 cause its 50 percent

Nat2105 [25]3 years ago
5 0

Answer:

80

Step-by-step explanation

50% is half

So 40+40=80

80/2=40

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I’m confused on this one
ad-work [718]

The question is "What is the scale of the model to the actual statue"


That means you must put 2/15.


2 being the model


15 being the actual statue


Take that fraction and equal is to 1/x.


Multiply 15 to 1 and 2 to x.


In the end, to solve, you divide 15 by 2x.


The answer is X=7.5


1 : 7.5


7 0
3 years ago
please help im having such a hard time :( does this equation have no solution one solution or infinite solutions
WINSTONCH [101]

One solution!

Step-by-step explanation:

If we make a graph of the given equations, the lines will intersect at a point. We know that whenever lines intersect, it means the equations have one solution or a unique solution.

8 0
3 years ago
Read 2 more answers
Factor f(x) = 4x3 + 15x2 – 24x + 5 into linear factors given that - 5 is a zero of f(x).15f(x) = 4x3 + 15x2 - 24x + 5 =(Factor c
Basile [38]

If x=-5 is a zero, then the first factor of the polynomial would be (x + 5 )

To find the other two factors we can divide the polynomial by the expression (x+5).

Using synthetic division, we have:

-5 I 4 15 -24 5 (Coefficients of the dividend)

I -20 25 -5 (Multiplying each coefficient by the results of the substraction and adding)

-----------------------------------------------------------------------------------

4 -5 1 0 (Coefficients of the quotient)

The result of the division is 4x^2 - 5x + 1. Factoring it, we have:

4x^2 - 4x -x + 1 (Separating -5x into -x and -4x)

4x (x - 1) - (x -1) (Factoring each pair of terms)

(x-1)(4x-1) (Factoring using the common factor)

So the answer would be:

(x + 5 )(x-1)(4x-1)

3 0
10 months ago
What are the domain and range of the function f(x)=sqrt(x-7) +9
GenaCL600 [577]

Domain: x ≥ 7

Range (7,9)

5 0
3 years ago
Read 2 more answers
Rewrite the rational exponent as a radical by extending the properties of integer exponents.
maks197457 [2]

Answer:

\sqrt[4]{2}

Step-by-step explanation:

This was right on my test. I completely guessed so I don't really have an explanation.

6 0
3 years ago
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