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
olga2289 [7]
3 years ago
10

-13/20 - 7/5 = what ​

Mathematics
1 answer:
luda_lava [24]3 years ago
8 0

Answer:

Step-by-step explanation:

-13/20 - 7/5= -41/20 or -2 1/20 or -2.05

You might be interested in
Hi can someone help me with these? if its wrong then just tell me so i can fix those ;-;
musickatia [10]

Answer:

1) 1

2) 5

3) -8

4) 10

5) 9

6) -1

7) -3

8 0
2 years ago
Read 2 more answers
Find the slope of the line that passes through Point A $$(​−5,7) and Point B $$(2,5), using the formula $$m=
tester [92]

Answer:

slope = - \frac{2}{7}

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 5, 7 ) and (x₂, y₂ ) = (2, 5 )

m = \frac{5-7}{2-(-5)} = \frac{-2}{2+5} = - \frac{2}{7}

8 0
2 years ago
What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer
worty [1.4K]

Take  2 points: (0, 70) (30, 80)

SLOPE FORMULA: y2 -y1 / x2 - x1

y2 - y1: 80 - 70 = 10

x2 - x1: 30-0 = 30

10 / 30

simplify: 1/3

This is a PROPER FRACTION

5 0
3 years ago
You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con
Assoli18 [71]

Question:

You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on constructing a confidence interval; however, you are not sure how many citizens should be included in the sample. If you want your sample estimate to be within 5 years of the actual mean with a confidence level of 97% , how many citizens should be included in your sample? Assume that the standard deviation of the ages of all the citizens in this community is 18 years.

Answer:

61.03

Step-by-step explanation:

Given:

Standard deviation = 18

Sample estimate = 5

Confidence level = 97%

Required:

Find sample size, n.

First find the Z value. Using zscore table

Z-value at a confidence level of 97% = 2.17

To find the sample size, use the formula below:

n = (Z * \frac{\sigma}{E})^2

n = ( 2.17 * \frac{18}{5})^2

n = (2.17 * 3.6)^2

n = (7.812)^2

n = 61.03

Sample size = 61.03

4 0
3 years ago
At the football concessions stand, Tia sold 78 hamburgers and chicken tenders. If she
Murrr4er [49]

I am going to do this problem with more of an algebraic approach weather or not its the way your teacher wants you to do it like this.

The way to do things algebraically is to just set variables for what you want to find and set up equations to represent each sentence.

As seen there are hamburgers and chickens in this problem. So let's set the numbers of hamburgers to x, and the numbers of chickens to y.

Now write out each sentence using variables.

1.) Tia sold 78 hamburgers and chicken tenders.

x+y=78

2.) If she sold 24 more hamburgers than chicken tenders.

x=y+24

Now that we have the 2 equations, its time to solve.

Since we have x=y+24, we can replace the x in the first equation with the second equation

y+24+y=78

2y+24=78

Now we can subtract 24 from both sides.

2y=54

Simplify

y=27

Solve for x

x=27+24=51

Done!

6 0
2 years ago
Other questions:
  • 58 less than the product of 75 and a number is 283.
    5·1 answer
  • A 7/16- inch- long bolt is used in a machine.what is the length of the bolt written as a decimal?
    7·1 answer
  • From a point 80 feet in front of a library, the angles of elevation to the base of a flagpole, and to the top of the flag are 22
    6·2 answers
  • Which equation represents a linear function? Equation 1: y = 2x2 + 1 Equation 2: y = 8x + 1 Equation 3: y = 5x3 – 1 Equation 4:
    10·2 answers
  • Help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!<br> ._.
    5·2 answers
  • If 8 girls shared a pizza with 10. How can the solve their problem?
    9·2 answers
  • Yesterday, the snow was 2 feet deep in front of Archie’s house. Today, the snow depth dropped to 1.6 feet because the day is so
    8·2 answers
  • I need help with this problem.
    14·2 answers
  • Help please............
    6·2 answers
  • What’s the mean of 3 32 36 30 33 36
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!