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
Svetach [21]
3 years ago
7

A card is drawn from a standard deck of 52 playing cards. find the probability that the card is an ace or a heart.

Mathematics
1 answer:
inn [45]3 years ago
7 0
1 of 52 because there is one ace of hearts in a deck. so if there is only one card you can only have a chance to get that one card out of all 52.

hope this helped :)

You might be interested in
A researcher working in a Human Resources department was interested in gender and sales figures so he conducted a t-test. The me
irina1246 [14]

Answer:

d = \frac{78.24 -66.25}{\sqrt{\frac{7^2 +7^2}{2}}}= 1.713

For the interpretation we consider a value for d small is is between 0-0.2, medium if is between 0.2-0.8 and large if is higher than 0.8.

And on this case 1.713>0.8 so we have a large effect size

This value of d=1.713 are telling to us that the two groups differ by 1.713 standard deviation and we will have a significant difference between the two means.

Step-by-step explanation:

Previous concepts

The Effect size is a "quantitative measure of the magnitude of the experimenter effect. "

The Cohen's d effect size is given by  the following formula:

d = \frac{\bar X_1 -\bar X_2}{\sqrt{\frac{s^2_1 +s^2_2}{2}}}

Solution to the problem

And for this case we can assume:

\bar X_1 =78.24 the mean for females

\bar X_2 =66.25 the mean for males

s_1 = s_2= 7 represent the deviations for both groups

And if we replace we got:

d = \frac{78.24 -66.25}{\sqrt{\frac{7^2 +7^2}{2}}}= 1.713

For the interpretation we consider a value for d small is is between 0-0.2, medium if is between 0.2-0.8 and large if is higher than 0.8.

And on this case 1.713>0.8 so we have a large effect size

This value of d=1.713 are telling to us that the two groups differ by 1.713 standard deviation and we will have a significant difference between the two means.

4 0
3 years ago
Find three solutions of the equation y = 7x – 5.
soldi70 [24.7K]
 y=7x-5 This is the same as saying y-7x = -5 Well easy. You just make up numbers that make this work. Let x be 1 y-7=-5 y=-5+7 y=2 So one ordered pair is (1,2) Let x=2 y-14=-5 y=9 So another ordered pair is (2,9) Let x=3 y-21=-5 y=-5+21 y=16 So another ordered pair is (3,16) 
hope it helps
5 0
3 years ago
A student has some $1 and 5$ bills. He has a total of 15 bills that are worth $47. How many of each bill does he have?
Trava [24]

Answer:

Seven one dollar bills and eight five dollar bills.

Step-by-step explanation:

8 + 7 = 15 bills

8 x 5 = $40

7 x 1 = $7

40 + 7 = $47

47 dollars and 15 bills.

7 0
3 years ago
Read 2 more answers
What is the slope of a line that passes (4, 10) and (1, 10)
SpyIntel [72]

Answer:

The slope of the a straight line is given by the ratio of the Rise to the Run

of the line. The rise between the given points is zero.

The slope of the line that passes through the points (4, 10) and (1, 10) is zero.

Step-by-step explanation:

The given points are; (4, 10) and (1, 10)

The slope of a line, m, is given by the following formula;

Where;

(x₁, y₁) = (4, 10) and (x₂. y₂) = (1, 10), we get;

The slope of the line that passes through the points (4, 10) and (1, 10) is 0.

3 0
2 years ago
Read 2 more answers
Order these from least to greatest -[4], [-4], [2], [-8]
iren [92.7K]
-[4]   [2]    [-4]    [-8]
mark me brainliest if i right ty :))
5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for x.<br><br> 8x=4x−32
    13·1 answer
  • A school bought pens, each costing $1, and pencils, each costing $0.5. The cost of the whole purchase was $220. How many pens an
    9·1 answer
  • The random variable X has the following probability mass function.X -1 0 2 6 7P(x) 0.3 0.1 0.3 0.2 0.1Answer the next 4 question
    11·1 answer
  • Frank had $65. He spent $2 per day for 7 days. Then he was given $9 to divide equally between himself and his 2 brothers. The fo
    14·1 answer
  • You decreased the amount of $80.00 by $16.00. What percent of the original amount is the new amount?
    14·2 answers
  • What is the answer to this question <br> x + x + y x y (the last x is a times sign)
    11·1 answer
  • W+w+w+w+w+15-7 I got this wrong on a math question. I did 5w+8 = 13w ​
    7·2 answers
  • Given the following exponential function, what is the initial amount y 60(1.71)^x?
    11·1 answer
  • Solve the following. Write the answer on your sheet
    9·1 answer
  • What is the missing number. Explain how you determined your answer. <br><br> 5–8–14–26–50–?—194
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!