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
o-na [289]
3 years ago
10

for each homemade greeting card Jacqui sells, she makes a profit of $0.35. In one week, she made a profit of $42. She sells the

cards for $0.75 each. About how many greeting cards did Jacqui sell that week?
Mathematics
1 answer:
kondaur [170]3 years ago
6 0
She sold about 120 because 42/0.35 is 120

You might be interested in
PLEASE SOLVE THIS FOR ME sorry if it’s blurry :(
daser333 [38]

Answer:

A=500

Step-by-step explanation:

for mylar for polygon Area =ap/2

where a =apathem,p =perimeter

A=10*100/2

1000/2

500=a

the perimeter is the square of all the sides of the given polygon =10 sides =100

6 0
3 years ago
2 _<br> 3 --- + 2.3=<br> 3<br><br><br> giving 25 points for the right answer asap
meriva

3 \frac{2}{3}  + 2.3 \\\implies 3 \frac{2}{3} + \frac{23}{10} \\\implies \frac{11}{3} + \frac{23}{10} \\\implies \frac{110+69}{30} \implies \frac{179}{30}

8 0
3 years ago
Read 2 more answers
You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you beli
zhuklara [117]

Answer:

We need to sample at least 1069 parents.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

How many parents do you have to sample?

We need to sample at least n parents.

n is found when M = 4, \sigma = 79.5. So

M = z*\frac{\sigma}{\sqrt{n}}

4 = 1.645*\frac{79.5}{\sqrt{n}}

4\sqrt{n} = 1.645*79.5

\sqrt{n} = \frac{1.645*79.5}{4}

(\sqrt{n})^{2} = (\frac{1.645*79.5}{4})^{2}

n = 1068.92

Rounding up

We need to sample at least 1069 parents.

6 0
3 years ago
Read 2 more answers
A scientist needs 60 liters of a 40​% acid solution. He currently has a 20 % solution and a 50 % solution. How many liters of ea
Stella [2.4K]

percent ---------------- quantity

Acid type I 60.00% ---------------- x liters

acid type II 30.00% ------ 60 - x liters

Mixture 40.00% ---------------- 60

Total 60 liters

60.00% x + 30.00% ( 60 - x ) = 40.00% * 60

60 x + 30 ( 60 - x ) = 2400


60 x + 1800 - 30 x = 2400

60 x - 30 x = 2400 - -1800

30 x = 600

/ 30

x = 20 liters 60.00% Acid type I

40 liters 30.00% acid type II

brainliest plzz

6 0
3 years ago
When using substitution to solve this system of equations, what is the result of the first step?
Fittoniya [83]

Answer:

answer

Step-by-step explanation:

one of you answer this question

6 0
3 years ago
Other questions:
  • 9x – 5 &lt; –41 or 3x + 13 &gt; 7
    7·2 answers
  • What is the inverse function f(x)=-3x-2
    5·1 answer
  • 7. The pair of polygons is similar. Find the value of x.
    14·1 answer
  • What is the domain and range?
    11·1 answer
  • What are two numbers that multiply to 35 and add to negative 12?
    15·1 answer
  • Find the sum of the interior angles of a convex hexagon?
    13·1 answer
  • the value of x - y is negative an X and Y are both positive what can conclude about the values of X and Y?
    11·1 answer
  • Which statements about the diagram are true?
    9·1 answer
  • A man who can ride a bicycle 50 miles in 2 hrs and 25 minutes has what average speed <br> in mph?
    14·1 answer
  • An expression is shown below:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!