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
fgiga [73]
3 years ago
14

Simplify -5 1/4 - (-7 1/2)

Mathematics
1 answer:
ehidna [41]3 years ago
7 0
-5 \dfrac{1}{4} - (-7 \dfrac{1}{2} ) = -5 \dfrac{1}{4} + 7 \dfrac{1}{2} =-5 \dfrac{1}{4} + 7 \dfrac{2}{4} = 7 \dfrac{2}{4} -5 \dfrac{1}{4} =2 \dfrac{1}{4}
You might be interested in
Julia is taking a test with multiple choice and true/false question the test has twentg question altogether . julia gets five po
Sonbull [250]
X=number of corect
y=number of incorrect
5 points for each correct so 5x
-1 point for each incorrect so -y

5x-y=76
solve for x and y

I like putting it into slope intercep tofrm which is y=mx+b
add y to both sides
5x=76+y
subtract 76 from both sides
5x-75=y
y=5x-76

subsitute values for x and get values for y
remember, that julia cannot answer a negative number of incorrect questions so y must be greater than or equal to 0

so solve for minimum
0<u><</u>5x-76
add 76 to both sides
76<u><</u>5x
divide by 5
15.2<u><</u>x
you cannot answer a fraction of a correct quesiton so round up
16 is the minumum number of queswtions correctlyh answered


so
x<u>></u>16

subsitute 16 for x
y=5(16)-76
y=80-76
y=4

as we subsitute more numbers over 16, we get these points
so (x,y) 
(16,4)
(17,9)
(18,14)
(19,19)
(20,24)
(21,29)
(22,34)
(23,39)
x=correct answer
y=wrong answers
5 0
3 years ago
!!!!!!!!HELP PLEASE!!!!!!!!       In ΔSTU, SU = 18 and TU = 13. Find m∠T to the nearest tenth of a degree.
tatyana61 [14]
We can use a trig function to find the measure of angle T.

tan(T) = 18/13

Take the archtangent on both sides since we are searching for an angle.

arctan(tan T) = arctan(18/13)

T = 54.16°

The measure of angle T is 54.16°.
4 0
3 years ago
Find the value of x. Round to the nearest tenth.
Svet_ta [14]
Right triangle means:
sin, cos, and tangent

Here, we can see that:
sin 35° = \frac{x}{20}

Simplify.

20sin 35° = x

Multiply 20 by sin of 35 degrees.

x = 11.47(ROUNDED)

Answer: Choice C
8 0
3 years ago
Read 2 more answers
I NEED HELP ASAPPPP
Yuliya22 [10]
Pythagorean Theorem- A^2+B^2=C^2
1) 6^2+9^2= x^2
2) 36+81= 117
Square root 117 =10.82

Hope this helped :)
4 0
3 years ago
A drawer contains 6 blue socks, 8 white
sesenic [268]
You would most likely choose the purple one the answer is A and perimeter is 8
3 0
3 years ago
Other questions:
  • In ∆ABC, point D is the centroid. If (AE) ̅=15, (BF) ̅=27, and (CD) ̅=8, find the following lengths
    5·1 answer
  • Which measurement below has four significant figures? A. 14,052 km B. 12.05 L C. 0.0230 kg D. 12.501 m
    10·1 answer
  • What are two expressions that are equivalent to 2(x+4)
    13·1 answer
  • If a bike is $125 how much will it be when its discounted by 20%
    6·2 answers
  • Which recursive formula can be used to generate the sequence shown, where f(1) = 5 and n &gt; 1?
    13·2 answers
  • Plls help im failing
    9·2 answers
  • Measures of variability,i have learned that​
    14·1 answer
  • Two numbers have a sum of 136 and a difference of 32. Find the smaller of the two numbers.
    13·2 answers
  • Can someone answer this problem please
    12·1 answer
  • Help me to solve all of this questions
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!