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3 years ago

Which statements are correct for all values of x?

1 answer:

8 0

A), C), D), and E are all true because if you were to solve them, both sides of the = sign would be the same number. For example, if I were to solve the first one (A), I would get 16x=16x

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How to write a decimal as a fraction in simplest form 0.40?

Ulleksa [173]

You can change this into 0.4, which is 4 tenths. 4 tenths translates to 4/10 and you can simplify from there.

2/5 is the final answer as you can divide the numerator and denominator by 2.

7 0

3 years ago

15 = 5(x +2 ) x= ill mark brainliest and 20 points

Sliva [168]

Answer:

X=5

Step-by-step explanation:

15= 5(x+2)

Distribute

15= 5x+ 10

subtract 10 from all sides

5=5x

divide all sides by 5

5=x

x=5

8 0

3 years ago

Read 2 more answers

In a certain country, the true probability of a baby being a boy is 0.538. Among the next four randomly selected births in the c

masya89 [10]

Answer:

0.916

Step-by-step explanation:

In a certain country, the true probability of a baby being a boy is p = 0.538, then the true probability of a baby being a girl is q = 1 - 0.538 = 0.462.

Among the next four randomly selected births in the country, the probability that at least one of them is a girl is

$P=C^4_1p^{4-1}q^1+C^4_2p^{4-2}q^2+C^4_3p^{4-3}q^3+C^4_4p^{4-4}q^4$

$P=1-C^4_0p^{4-0}q^0=1-\dfrac{4!}{0!(4-0)!}p^4=1-\dfrac{4!}{4!}(0.538)^4=1-(0.538)^4\approx 0.916$

6 0

4 years ago

Find r 3(r - 7 ) = 4(2 - 2r) + 4

stiks02 [169]

$\bf 3(r-7)=4(2-2r)+4\implies \stackrel{\textit{distributing}}{3r-21=8-8r+4}\implies 3r-21=12-8r \\\\\\ 11r-21=12\implies 11r=33\implies r=\cfrac{33}{11}\implies r=3$

8 0

4 years ago

A parallelogram rotates about its center. At what angle of rotation will the image of the parallelogram coincide with its preima

Mkey [24]

Answer: 180 degrees

Step-by-step explanation: If a parallelogram rotates about its center, then taking the 180 degrees as the angle of rotation, finally the image of the parallelogram will coincide with its preimage. Hope this helps

6 0

3 years ago

Read 2 more answers