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
wlad13 [49]
4 years ago
7

Plz help me with this and explain how u got the answer

Mathematics
1 answer:
kolbaska11 [484]4 years ago
6 0
I'm going to set up an equation to find the amount of momey Elisa has, then we can check our answer

e + 2e + 2e + 5 + 2e + 5 · 3 + e + 2e = 69
Simplify:
10e + 30 = 69
Subtract 35 from each side:
10e = 39
Divide by 10 on each side
e = 3.9

We can check our answer by putting the value in the simplified equation.
10 · 3.9 + 30 = 69
Yep! The equation is correct. Now for the answer.

Elisa
3.9
Jacob
7.8
Sandra
12.8
Damian
38.4
Martin
11.7

Hope this helped! If you have anymore questions or don't understand, please comment on my profile or DM me. :)
You might be interested in
Find the missing angles.​
Klio2033 [76]

Answer:

Angle 1 = 128

Angle 2 = 52

Angle 3 = 47

Angle 4 = 133

Angle 5 = 81

Step-by-step explanation:

Angle 5 is 81

Angle 3 is 47

Angle 4 is 133

Angle 2 is 52

Angle 1 is 128

4 0
3 years ago
Seven more than 4 times a number is 43 solve in algebraic equation?
zzz [600]

Answer:

x = 9

Step-by-step explanation:

4x + 7 = 43

4x = 36

x = 9

6 0
3 years ago
20 POINTS If the perimeter of a triangle is 14.4. What is the area?
sweet-ann [11.9K]

Answer:

A = 9.9648

Step-by-step explanation:

if the triangle is equilateral =>

P = 3L => L = 14.4/3 = 4.8

A = L²√3/4

= (4.8)²√3/4

= 23.04√3/4

= 5.76×1.73

= 9.9648

7 0
4 years ago
Find the Total surface area of the triangular prism below.
zaharov [31]

Answer:

The surface area of any prism is the total area of all its sides and faces. A triangular prism has three rectangular sides and two triangular faces. To find the area of the rectangular sides, use the formula A = lw, where A = area, l = length, and h = height. To find the area of the triangular faces, use the formula A = 1/2bh, where A = area, b = base, and h = height. Once you have the areas of all sides and faces, you simply add them together to get the surface area.

Step-by-step explanation:

Formula

Area of a triangle

A = 1/2bh

Area of a rectangle  

A = lw

Surface area of triangular prism  

SA = bh + (s1 + s2 + s3)H

Hope it helps... Please mark as the Brainliest!!!

8 0
3 years ago
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
4 years ago
Other questions:
  • How do you find the solution
    5·1 answer
  • Show by means of an example that lim x-&gt; a [f(x) + g(x)] may exist even though neither lim x-&gt; a f(x) and lim x -&gt; a g(
    10·1 answer
  • - 5y – 10x=45<br>- 3y + 10x = -5​
    12·2 answers
  • Lilie is starting a savings account with $366. She earns $222 every month. How many months until Lilie has saved $898? Round you
    14·1 answer
  • The circumference of a tire is 100.48 inches. Determine the radius of the tire. Use 3.14 for π.
    10·2 answers
  • Simplify the expression.
    9·1 answer
  • Marvin has 2 rabbits. The number of rabbits triples
    7·2 answers
  • MY SISTER TO BE A PROFESSTIONAL PLAYER WHEN SHE 'S GROWN UP
    7·2 answers
  • Zoe is 16 years old. Her brother, Luke, is 3 years more than half her age. Write a numerical expression for Luke's age.
    10·1 answer
  • Find p.<br> 30°<br> O<br> 60°<br> 7 in
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!