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sammy [17]
3 years ago
11

Solve the equation -5(y +0.2) = 25. y =

Mathematics
2 answers:
lora16 [44]3 years ago
6 0
Y=-5.2
Divide both sides of the equation by -5
Y+0.2=-5
Y=-5-0.2 this one will be more correct
Y=-5.2
katovenus [111]3 years ago
4 0

Answer:

y= -5.2

Step-by-step explanation:

-5(y+0.2)= 25

y+0.2 = -5

y= -5 - 0.2

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Scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean 495 and standard deviation 11
Karolina [17]

Answer:

(c) 118/V100 11.8

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\sigma = 118, n = 100

So

s = \frac{118}{\sqrt{100}} = 11.8

So the correct answer is:

(c) 118/V100 11.8

8 0
3 years ago
Sherry claims that the expression 1/x will always be equivalent to a repeating decimal whenever x is an odd number greater than
fomenos

Answer:

The correct options are :

b. 5

e. 25

Step-by-step explanation:

The question is incomplete. The missing part is :

'' Which of these values will prove Sherry's claim is false :

a. 3

b. 5

c. 7

d. 11

e. 25 ''

One way to prove that Sherry's claim is false is finding one odd number greater than 1 that when we replace it in the denominator of the expression \frac{1}{x} the result isn't equivalent to a repeating decimal.

Let's analyze each option :

  • a. 3

3 is an odd number greater than 1 ⇒ If we replace in the expression \frac{1}{x} ⇒

\frac{1}{3}  ≅ 0.3333 (repeating decimal)

The option a. 3 won't prove that Sherry's claim is false.

  • b. 5

5 is an odd number greater than 1 ⇒ If we replace in the expression \frac{1}{x} ⇒

\frac{1}{5}=0.2

The result isn't a repeating decimal.

The option b. 5 will prove that Sherry's claim is false.

  • c. 7

7 is an odd number greater than 1 ⇒ If we replace in the expression \frac{1}{x} ⇒

\frac{1}{7} ≅ 0.1428 (repeating decimal)

The option c. 7 won't prove that Sherry's claim is false.

  • d. 11

11 is an odd number greater than 1 ⇒ If we replace in the expression \frac{1}{x} ⇒

\frac{1}{11} ≅ 0.0909 (repeating decimal)

The option d. 11 won't prove that Sherry's claim is false.

  • e. 25

25 is an odd number greater than 1 ⇒ If we replace in the expression \frac{1}{x} ⇒

\frac{1}{25} ≅ 0.04

The result isn't a repeating decimal

The option e. 25 will prove that Sherry's claim is false.

3 0
3 years ago
a family's monthly income is $3375. the family spends 3/4 of this on rent. how much is spent on rent.
Ksenya-84 [330]
$2531.25 is spent on rent
5 0
3 years ago
Solve it plz 29x < 38x + 18
storchak [24]

Answer:

x= -2

Step-by-step explanation:

The first thing I did was isolate the x's on one side.  I subtracted 38x from both sides.  This gives me:

-9x=18.  

Now i divide both sides by -9.  Giving me x=-2

5 0
3 years ago
It takes liam 56 minutes to lift 4 tyres<br> If he works for 42 minutes how many tyres would he lift
faust18 [17]

He would lift 3 tyres in 42 minutes.

Hope this helps!

7 0
4 years ago
Read 2 more answers
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