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valentinak56 [21]

3 years ago

13

A librarian wants to spend no more than $800 on some new desks and chairs for the library. The librarian decides to spend $320 o

n desks.
If each chair costs $24, what is the maximum number of chairs the librarian can buy for the library and stay within the budget?

2 answers:

Ratling [72]3 years ago

6 0

Answer:

I think 20

Step-by-step explanation:

480/24

schepotkina [342]3 years ago

3 0

The answer is 20 because 480/24 is 20

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Can u guys help me on some of these please

GalinKa [24]

1. multiply 1 and 3 to equal 3 then subtract 4 to equal -1

3 0

3 years ago

In a right triangle the length of a hypotenuse is 6 and the length of one leg is 5. Find the length of the other leg,

ludmilkaskok [199]

Answer:

sqrt 11

Step-by-step explanation:

Pythagorean theorem again. a^2+b^2=c^2. The hypotenuse is the c value. One of the legs is either a or b, doesn't matter which. So you can make the equation 5^2+b^2=6^2. 25+b^2=36. Subtract 25 from each side to isolate the b variable. You're left with b^2=11. Now you take the square root of each side to get b. This makes b= sqrt 11.

7 0

3 years ago

Read 2 more answers

Statistics professors believe the average number of headaches per semester for all students is more than 18. From a random sampl

kompoz [17]

Complete Question

Statistics professors believe the average number of headaches per semester for all students is more than 18. From a random sample of 15 students, the professors find the mean number of headaches is 19 and the standard deviation is 1.7. Assume the population distribution of number of headaches is normal.the correct conclusion at $\alpha =0.001$ is?

Answer:

There is no sufficient evidence to support the professor believe

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 18$

The sample size is $n = 15$

The sample mean is $\= x = 19$

The standard deviation is $\sigma = 1.7$

The level of significance is $\alpha = 0.001$

The null hypothesis is $H_o: \mu = 18$

The alternative hypothesis is $H_a : \mu > 18$

The critical value of the level of significance from the normal distribution table is

$Z_{\alpha } = 3.290527$

The test hypothesis is mathematically represented as

$t = \frac{\= x - \mu }{ \frac{\sigma}{ \sqrt{n} } }$

substituting values

$t = \frac{ 19 - 18}{ \frac{1.7}{ \sqrt{15} } }$

$t = 2.28$

Looking at the value of t and $Z_{\alpha }$ we can see that $t < Z_{\alpha }$ so we fail to reject the null hypothesis.

This mean that there is no sufficient evidence to support the professor believe

3 0

3 years ago

Write x2 - 2x + 5 = 0 in vertex form. (Be sure to write your response in the form a(x-h)^2+k=0 with no spaces!)

Drupady [299]

To write the given quadratic equation to its vertex form, we first form a perfect square.

x² - 2x + 5 = 0
Transpose the constant to other side of the equation,
x² - 2x = -5
Complete the square in the left side of the equation,
x² - 2x + (-2/1(2))² = -5 + (-2/1(2))²
Performed the operation,
x² - 2x + 1 = -5 + 1
Factor the left side of the equation,
(x - 1)² = -4

Thus, the vertex form of the equation is,
<em> (x-1)² + 4 = 0</em>

4 0

3 years ago

What is the answer ? Please help !!

ch4aika [34]

Answer: p > $\frac{3}{7}$

Step-by-step explanation:

-21p + 69 > -49p + 81

-69 -69

-21p > -49p + 12

+49p +49p

28p > 12 divide both sides by 28

p > 12/28

reduce it p> 3/7

7 0

3 years ago