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3 years ago

Geometry please help

Mathematics

2 answers:

const2013 [10]3 years ago

8 0

Answer:

<h2>Option C</h2>

Step-by-step explanation:

Make an equation to solve for x.

10x=90+10

Then solve.

10x=90+10

10x=100

x=10

So the answer is x=10.

Ivahew [28]3 years ago

7 0

Answer:

Option 3) x = 10

Step-by-step explanation:

Since each of it's angle has a measure of 90 degrees, So,

=> 10x-10 = 90

=> 10x = 90+10

=> 10x = 100

Dividing both sides by 10

=> x = 10

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3/4 foot =___inches Fill in the Blank

MrMuchimi

The answer is 9 inches

8 0

3 years ago

Read 2 more answers

millicent earned $435 last year in interest. If $3000 was invested at a certain rate of return and $4500 was invested in a fund

tatiyna

Answer:

7% and 5%

Step-by-step explanation:

The computation of the two rates of interest is shown below;

The interest rate for $3,000 be x%

And, for $4,500 the interest rate is (x -2%)

The total interest earned is

= x% of $4,500 + (x - 2)% of $4,500

So, the two rates of interest is

x% of $4,500 + (x - 2)% of $4,500 = $435

30x + 45(x - 2) = $435

30x + 45x - 90 = $43

75x = $25

x = 7%

x - 2 = 7 - 2

= 5%

8 0

3 years ago

Please help!! I will give brainilest. look at the picture!

xxMikexx [17]

Answer:

Rows 126

last row has 41

last row is not full because its an odd number

Step-by-step explanation:

4 0

3 years ago

A pack of pencils, p, costs $1.99. A school buys $129.35 worth of pencils.

rosijanka [135]

Answer:

p=65. the value of p is the amount of pencils packs.

Step-by-step explanation:

1.99p=129.35

129.35/1.99=65

6 0

3 years ago

A particular battery claims to have a mean life of 400 hours with a standard deviation of 30 hours. Approximately what percent o

Svetach [21]

Using the normal distribution, it is found that 25.14% of the batteries will last more than 420 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

$Z = \frac{X - \mu}{\sigma}$

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, we have that the mean and the standard deviation are given, respectively, by:

$\mu = 400, \sigma = 30$ .

The proportion of the batteries will last more than 420 hours is one subtracted by the p-value of Z when X = 420, hence:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{420 - 400}{30}$

Z = 0.67

Z = 0.67 has a p-value of 0.7486.

1 - 0.7486 = 0.2514.

0.2514 = 25.14% of the batteries will last more than 420 hours.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

3 0

2 years ago