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3 years ago

Which expressions are equivalent to 2(25)?

Mathematics

2 answers:

miskamm [114]3 years ago

8 0

Answer:

2(10+15)= 50

2(20+5)= 50

Step-by-step explanation:

2(25)=50

2(20+15) = 70

2(10+15)= 50

2(20+5)= 50

2(2+5) = 14

g100num [7]3 years ago

6 0

Answer:

2(20+5)

2(10+15)

Step-by-step explanation:

When you add 20+5 together you get 25 which is the same to 2(25)

When you add 10+15 together you get 25 which is the same to 2(25)

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Write the equation in standard form using integers y=3x + 5

strojnjashka [21]

Answer:

Put the equation into standard form

Ax+By=C

subtract 3x to the left

answer:

-3x+y=5

Ax+By=C

Step-by-step explanation:

4 0

2 years ago

HELP? I don't understand at all!!

ivanzaharov [21]

I do not know at all I am sorry

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3 years ago

Which of the following have the property that a(x)=a−1(x)? I. y=x II. y=1/x III.y=x^2 IV. y=x^3 A. I and II, only B. IV, only C.

valentina_108 [34]

Answer:

Correct answer:

A. I and II

Step-by-step explanation:

First of all, let us have a look at the steps of finding inverse of a function.

1. Replace y with x and x with y.

2. Solve for y.

3. Replace y with $f^{-1}(x)$

Given that:

$I.\ y=x \\II.\ y=\dfrac{1}x \\III.\ y=x^2 \\IV.\ y=x^3$

Now, let us find inverse of each option one by one.

I. y = x, a(x) = x

Replacing y with and x with y:

x = y

x = $a^{-1}(x)$ = $a(x)$ Hence, I is true.

II. $y =\dfrac{1}{x}$

Replacing y with and x with y:

$x =\dfrac{1}{y}$

$x=\dfrac{1}{a^{-1}(x)}$

$\Rightarrow a^{-1}(x) = \dfrac{1}{x}$

$a^{-1}(x)$ = $a(x)$ Hence, II is true.

III. $y =x^{2}$

Replacing y with and x with y:

$x =y^{2}\\\Rightarrow y = \sqrt x\\\Rightarrow a^{-1}(x) = \sqrt{x} \ne a(x)$

Hence, III is not true.

IV. $y =x^{3}$

Replacing y with and x with y:

$x =y^{3}\\\Rightarrow y = \sqrt[3] x\\\Rightarrow a^{-1}(x) = \sqrt[3]{x} \ne a(x)$

Hence, IV is not true.

Correct answer:

A. I and II

4 0

3 years ago

Justin bought 6 ribbons for an project . Each ribbons is 1/4 yard long . How many yards of ribbons did Justin buy?

d1i1m1o1n [39]

6 ribbons
1/4 yard long each
4 yards= 4 ribbons
4/4 yards
A: 6/4 Yards

3 0

3 years ago

Read 2 more answers

Factor the expression using the GCF (Greatest Common Factor) 12x + 36

navik [9.2K]

Answer:

12 ( x+3)

Step-by-step explanation:

We can factor a 12 out of each term

12 *x + 12*3

12 ( x+3)

5 0

2 years ago