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
inysia [295]
3 years ago
6

A store advertises T-shirts: 5 for $13.00. If Hazael spent $20.80 on

Mathematics
1 answer:
atroni [7]3 years ago
8 0

Answer:  He bought 8 t-shirts

Step-by-step explanation:

Set up a proportional relationship

If t-shirts equals to $13, then how many t-shirts will equal to $20.80, we will represent that number of t-shirts by the variable x.

\frac{5}{x} = \frac{13}{20.80}  

13x = 104

x = 8

You might be interested in
Based on a sample of 150 textbooks at the store, you find an average of 70.69 and a standard deviation of 29.6. The point estima
Ugo [173]

Answer:

Step-by-step explanation:

Given that:

The sample size = 150

The sample mean = 70.69

The standard deviation = 29.60

The sample mean is equal  to the point estimate of the population = 70.69

At 99% confidence interval level is:

∝ = 1 - 0.99

∝ = 0.01

The critical value:

Z_{\alpha/2} = Z_{0.01/2} \\ \\  Z_{0.005} = 2.58  \ using \ Z \ tables

The Margin of error = Z_{\alpha/2} \times \dfrac{\sigma}{\sqrt{n}}

= 2.58 \times \dfrac{29.6}{\sqrt{150}}

= 2.58 × 2.4168

≅ 6.235

At 99% confidence interval; the estimate of the population mean lies within the interval:

= \overline x - E < \mu \ < \overline x + E

= 70.69 - 6.235 < μ <  70.69 + 6.235

= 64.455  < μ < 76.925

= (64.455 , 76.925 )

6 0
3 years ago
Can someone help me??
nekit [7.7K]

Answer:

4

Step-by-step explanation:

y^2-7y-8

-4^2-7(-4)-8

−16−(7)(−4)−8

−16−(−28)−8

12−8

4

3 0
4 years ago
Read 2 more answers
7^x=6^(x+7)
kondor19780726 [428]
If you have a graphing calculator you’d want to use log and it will pretty much give you the answer
4 0
3 years ago
What is the mode of 5, 12, 11, 5, 6, 19, 5, 7, 8, 6, 5, 11, 8?<br><br> 8<br> 5<br> 11
Alinara [238K]

The mode is the most common number in the list.

I see four 5s, which is more than two 11s or two 8s or two 6s or one of everything else.

Answer: 5

6 0
3 years ago
Please help divide 10u^2− 4u/2u
11111nata11111 [884]

Answer:

5u-2

-_-_-_-_-_-_-_-_-

6 0
3 years ago
Other questions:
  • A function is defined as {(0, 1), (2, 3), (5, 8), (7, 2)}. Isaac is asked to create one more ordered pair for the function. Whic
    9·1 answer
  • I am a two digit square number. the sum of my digits is 13. what Square number am I
    6·1 answer
  • Let f be the function given by f(x)=5cos2(x2)+ln(x+1)−3. The derivative of f is given by f′(x)=−5cos(x2)sin(x2)+1x+1. What value
    15·1 answer
  • Consider the equations 3x+2=14 and 2+3x=14 <br>Do they have the same solution? Why or why not?
    7·1 answer
  • Which of the following transformations will always produce a congruent figure?
    12·2 answers
  • PLEASE HELP WILL MARK BRAINLIEST ‼️‼️‼️‼️‼️‼️
    9·2 answers
  • 3. If the mZLKI - 174º and KR bisects LLKI, then find the mLLKR.
    5·1 answer
  • You have 18 pictures to paste to a poster. You want to arrange them on the poster in rows so that there are an equal number of p
    13·1 answer
  • Use The Cruise Ship room price Table To Determine The Percentile Rank Of $6,962
    10·1 answer
  • 3x-2y=12
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!