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Leto [7]
3 years ago
14

What’s the equation.?

Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0

Answer:

See below

Step-by-step explanation:

You know that he spent 1/3 of his earnings, and then 1/4. After this, he has $28.90. You can write the equation like this:

1/4(x * 1/3) = $28.90.

If you need to solve it:

1/4 * 1/3x = 28.90

1/12x = 28.90

x = 346.80

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mestny [16]

Answer:

B.

An investment account has the potential to earn more money than a savings account.

4 0
3 years ago
I forgot to bring pen and paper lol<br> If u click there will be pic ;)
creativ13 [48]

Answer:

99,117

Step-by-step explanation:

1) Use the partial sum method.

1 8 4 9 2

+ 8 0 6 2 5

9 0 0 0 0 (10000+80000)

8 0 0 0 (8000+0)

1 0 0 0 (400+600)

1 1 0 (90+20)

7 (2+5)

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9 9 1 1 7

6 0
2 years ago
Read 2 more answers
SAT verbal scores are normally distributed with a mean of 433 and a standard deviation of 90. Use the Empirical Rule to determin
laila [671]

34% of the scores lie between 433 and 523.

Solution:

Given data:

Mean (μ) = 433

Standard deviation (σ) = 90

<u>Empirical rule to determine the percent:</u>

(1) About 68% of all the values lie within 1 standard deviation of the mean.

(2) About 95% of all the values lie within 2 standard deviations of the mean.

(3) About 99.7% of all the values lie within 3 standard deviations of the mean.

$Z(X)=\frac{x-\mu}{\sigma}

$Z(433)=\frac{433-\ 433}{90}=0

$Z(523)=\frac{523-\ 433}{90}=1

Z lies between o and 1.

P(433 < x < 523) = P(0 < Z < 1)

μ = 433 and μ + σ = 433 + 90 = 523

Using empirical rule, about 68% of all the values lie within 1 standard deviation of the mean.

i. e. ((\mu-\sigma) \ \text{to} \ (\mu+\sigma))=68\%

Here μ to μ + σ = \frac{68\%}{2} =34\%

Hence 34% of the scores lie between 433 and 523.

8 0
3 years ago
How do you solve this question
Wewaii [24]

<h2>Solution:.</h2>

Let the ceilings be <em>a</em><em> </em><em>&</em><em> </em><em>b</em>

and the distance from one corner of the ceiling to the opposite be <em>c</em>

<em>then </em><em>using</em><em> </em><em>Pythagoras</em><em> theorem</em>

c =  \sqrt{a {}^{2} +  b  {}^{2} } \\  c =    \sqrt{16 {}^{2} +  12  {}^{2} } \\ c =  \sqrt{256 + 144 }  \\ c =  \sqrt{400}  \\ c = 20

hence ,c .°. the distance from one corner of the ceiling to the opposite is<em> </em><em>2</em><em>0</em>

3 0
2 years ago
Please help ASAP with geometry! Will give brainliest
Marysya12 [62]

Answer:

360

Step-by-step explanation:

All circles can be divided into 360 units called degrees. Since there is 270 already we subtract 270 from 360.

360 - 270 = 90

90 + 150 + 120 = 360

5 0
3 years ago
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