1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
suter [353]
3 years ago
8

Please solve!!!!thanks

Mathematics
2 answers:
alukav5142 [94]3 years ago
5 0

Answer:

h = 11. 5.

Step-by-step explanation:

(4h - (21 - 8h)/3 = (15 + 6(h - 1)/2

Cross multiplying, we get:

2(4h - (21 - 8h) = 3(15 + 6(h - 1)

8h - 2(21 - 8h) = 45 + 18(h - 1)

8h - 42 + 16h = 45 + 18h - 18

8h + 16h - 18h = 45 - 18 + 42

6h = 69

h = 11. 5

butalik [34]3 years ago
3 0

Answer:

11.5

Step-by-step explanation:

\frac{4h-(21-8h)}{3}  =   \frac{15 + 6(h - 1)}{2}  \\  \frac{4h - 21 + 8h}{3}  =  \frac{15 + 6h - 6}{2}  \\ 3(15 + 6h - 6) = 2(4h - 21 + 8h) \\ 45 + 18h - 18 = 8h - 42 + 16h \\ 27 + 18h = 24h - 42 \\ 18h - 24h =  - 42 - 27 \\  - 6h =  - 69 \\ h =   \frac{ - 69}{ - 6}  \\ cancel \: the \: minus \: signs \\  h= 11.5

<em>HOPE</em><em> </em><em>IT</em><em> </em><em>HELPS</em><em> </em>

<em>HAVE</em><em> </em><em>A</em><em> </em><em>NICE</em><em> </em><em>DAY</em><em> </em><em>:)</em><em> </em>

<em>XXITZFLIRTYQUEENXX</em><em> </em>

You might be interested in
You are interested in estimating the the mean weight of the local adult population of female white-tailed deer (doe). From past
alisha [4.7K]

Answer:

n=(\frac{2.33(19)}{7})^2 =39.996 \approx 40

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X represent the sample mean  

\mu population mean

\sigma=19 represent the assumed population standard deviation

n represent the sample size (variable of interest)  

Confidence =0.98 or 98%

Me=0.07 represent the margin of error for this case

Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}  (1)  

And on this case we have that ME =7 and we are interested in order to find the value of n, if we solve n from equation (1) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (2)

The critical value for 98% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.01,0,1)", and we got z_{\alpha/2}=2.33, replacing into formula (2) we got:

n=(\frac{2.33(19)}{7})^2 =39.996 \approx 40

So the answer for this case would be n=40 rounded up to the nearest integer

6 0
3 years ago
Product is to multiplications as quotient is to​
Rama09 [41]
Division. When you divide, the quotient is what you get as the answer
7 0
2 years ago
Which equation represents a line which is perpendicular to the line 5y-4x=-15 5y−4x=−15?
Lady bird [3.3K]
Y = -5/4x + b is the equation that represents a line that is perpendicular to the line 5y-4x=-15

If you want it in standard form, it is 5x+4y=-15
4 0
3 years ago
Find two positive numbers whose difference is 30 and whose product is 2584.
kvasek [131]

Answer:

38 and 68.

Step-by-step explanation:

Let x be the smaller one of the two number.

x must be a positive integer. The other number would be (x + 30).

The question states that the product of the two numbers is 2584. In other words:

x\, (x + 30) = 2584.

Rearrange this equation and solve for x:

x^{2} + 30\, x - 2584 = 0.

The first root of this quadratic equation would be:

\begin{aligned}x_{1} &= \frac{(-30) + \sqrt{30^{2} - 4 \times (-2584)}}{2} \\ &= \frac{(-30) + \sqrt{900 + 10336}}{2} \\ &= \frac{(-30) + \sqrt{11236}}{2} \\ &= \frac{(-30)}{2} + \sqrt{\frac{11236}{2^{2}}} \\ &= (-15) + \sqrt{2809} \\ &= (-15) + 53 \\ &= 38 \end{aligned}.

Similarly, the second root of this quadratic equation would be:

\begin{aligned}x_{1} &= \frac{(-30) - \sqrt{30^{2} - 4 \times (-2584)}}{2} \\ &= (-15) - 53 \\ &= -68\end{aligned}.

Since the question requires that both numbers should be positive, x > 0. Therefore, only x = 38 is valid.

Hence, the two numbers would be 38 and (38 + 30), which is 68.

6 0
3 years ago
Read 2 more answers
Health Maintenance Organizations: By choosing an HMO Plan, you’ll be paying for your coverage in advance, rather than paying for
GenaCL600 [577]
Is there a question with this

7 0
3 years ago
Other questions:
  • Helps pls! brailiest, thanks, rattings, etc. 20 full points!
    9·2 answers
  • 2f+10 distributive property
    10·2 answers
  • If the perimeter of the semicircle is 10.28mm. What is the semicircles radius?
    11·1 answer
  • How do you solve this? Show work and answer
    12·2 answers
  • An article when sold at a profit of 5% yields Rs 50 more than when sold at a loss of 5%. What was the cost price of the article?
    9·2 answers
  • Where Q and R are polynomials and the degree of R is less than the degree of B.
    11·1 answer
  • Find the original price if the price was 420 after a 10% discount
    15·1 answer
  • If the sixth term of a sequence is 128 and the common ratio is 2, then what is the first term? 1, 2 or ,4
    14·1 answer
  • loly beought a bag of hummy bears and ate one third of them the next say she ate 16 more hummy bears if she ate a total of 37 gu
    11·1 answer
  • Is 100% considered a rational or whole number?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!