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
Kipish [7]
3 years ago
11

Last week Matt's total sales were $12,000. This week his total sales were only $2,000. By what percent did his sales for the wee

k decrease
Mathematics
1 answer:
Ad libitum [116K]3 years ago
3 0
Decrease = $12000 -$2000
Decrease = $10000
% of decreasse = $10000/ $12000 *100
% of decrease = 83.333333
To the nearest whole percent is 83%
You might be interested in
A hiker walks an average rate of 2 miles per hour. Write a multiplication equation to find how long it will take for the hiker t
kykrilka [37]
Y= X/2

-----
y= 11/2
y= 5.5 hrs
7 0
3 years ago
Prove that the roots of x2+(1-k)x+k-3=0 are real for all real values of k​
masha68 [24]

Answer:

Roots are not real

Step-by-step explanation:

To prove : The roots of x^2 +(1-k)x+k-3=0x

2

+(1−k)x+k−3=0 are real for all real values of k ?

Solution :

The roots are real when discriminant is greater than equal to zero.

i.e. b^2-4ac\geq 0b

2

−4ac≥0

The quadratic equation x^2 +(1-k)x+k-3=0x

2

+(1−k)x+k−3=0

Here, a=1, b=1-k and c=k-3

Substitute the values,

We find the discriminant,

D=(1-k)^2-4(1)(k-3)D=(1−k)

2

−4(1)(k−3)

D=1+k^2-2k-4k+12D=1+k

2

−2k−4k+12

D=k^2-6k+13D=k

2

−6k+13

D=(k-(3+2i))(k+(3+2i))D=(k−(3+2i))(k+(3+2i))

For roots to be real, D ≥ 0

But the roots are imaginary therefore the roots of the given equation are not real for any value of k.

6 0
3 years ago
Please help me find y and show work/steps. I don't know how to do it
trasher [3.6K]

We will check if y and 60cm are parallel.

If the lengths 28cm, 56cm and 15cm, 30cm are in proportion, then y and the segment 60cm are parallel.

\dfrac{56}{28}=\dfrac{30}{15}\\\\2=2\qquad CORRECT!

OK. We know: y and 60cm are parallel. Therefore we have equation:

\dfrac{y}{28+56}=\dfrac{60}{56}\\\\\dfrac{y}{84}=\dfrac{15}{14}\qquad|\text{cross multiply}\\\\14y=15\cdot84\qquad|\text{divide both sides by 14}\\\\y=90cm

<h3>Answer: y = 90 cm.</h3>
5 0
3 years ago
Read 2 more answers
Jojo, my cat, had eight kittens. Three were black with white spots. Four were all black. The last one was gray. What is the rati
Ann [662]
4:8 simplified to 1:2
7 0
3 years ago
Read 2 more answers
Pls answer i need to answer it in 10-15 mins plsss
Tcecarenko [31]
The sum of two odd numbers is an even number
8 0
2 years ago
Read 2 more answers
Other questions:
  • 6 and<br> Find the value of this expression if x<br> y--1.<br> xy2<br> -5
    9·1 answer
  • Please help me on this quick!! Thanks and please show work.
    7·1 answer
  • How do you work this problem? 5 - 2x = 0
    13·1 answer
  • Plss finish fast the question is linked thank you for ur help
    5·2 answers
  • Sophia bought snacks for her team's practite. She bought a bag of chips for $1.84 and
    9·2 answers
  • 19<br> Work out the highest common factor (HCF) of 75 and 105
    10·2 answers
  • Help me with just 27​
    15·1 answer
  • What is 4*6 i need help
    8·2 answers
  • The perimeter of a rectangle is 84. If the length is 2 more than three times the width, what are the dimensions of the rectangle
    8·1 answer
  • Find x. Round your answer to the nearest tenth of a degree.<br> X<br> 11<br> 8
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!