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
natima [27]
3 years ago
8

Simplify the expression (-5-c)(-1)

Mathematics
1 answer:
Alla [95]3 years ago
6 0

Answer:

5+c

Step-by-step explanation:

You might be interested in
What is the value of x in the solution to this system of equations? 3x = 2y + 14<br> y = -6x + 18​
zmey [24]
Use substitution
3x = 2(-6x + 18) + 14
3x = -12x + 36 + 14
3x = -12x + 50
15x = 50, x = 50/15 = 10/3
Solution: x = 10/3
4 0
2 years ago
4. Is rap music more popular among young Indians than among young Asians? A sample survey compared 634 randomly chosen Indians a
bulgar [2K]

Answer:

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap music every day.

Step-by-step explanation:

Given  a sample survey compared 634 randomly chosen Indians aged 15 to 25 with 567 randomly selected Asians in the same age group.

p_{1} = \frac{368}{634} =0.580

It found that 368 of the Indians and 130 Asians listened to rap music every day.

p_{2} = \frac{130}{567} =0.229

Null hypothesis H0: there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

p_{1} = p_{2}

Alternative hypothesis:- p_{1} \neq  p_{2}

Level of significance α = 0.05

The test of statistic

z = \frac{p_{1} -  p_{2}}{\sqrt{pq(\frac{1}{n_{1} }+\frac{1}{n_{2} })  } } }

where p = \frac{n_{1}p_{1} + n_{1}p_{2}}{n_{1}+n_{2}} = \frac{634(0.580)+567(0.229)}{634+567}

       p = 0.414

and q = 1-p = 1- 0.414 =0.586

Z = \frac{0.580-0.229}{\sqrt{0.414(0.586)(\frac{1}{634} +\frac{1}{567} } } }

on calculation , we get

z = 0.300 ><1.96 at 95 % level of significance

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

3 0
3 years ago
What steps do I need to do to get 18×8.7<br><br>23×56.1<br><br>and<br><br>47×5.92
eimsori [14]
For 18 x 8.7 = 156.6

For 23 x 56.1 = 1290.3

For 47 x 5.92 = 278.24

but i don't know how to explain the steps, just the answers.
but hope i helped.
3 0
3 years ago
Read 2 more answers
The width of a rectangular field is 20 feet less than its length. The area of the field is 12,000 ft? What is the length of the
Scilla [17]

Answer:

The answer is 120 feet.

Step-by-step explanation:

The area of the field (A) is:

A = w · l       (w - width, l - length)

It is known:

A = 12,000 ft²

l = w - 20

So, let's replace this in the formula for the area of the field:

12,000 = w · (w - 20)

12,000 = w² - 20

⇒ w² - 20w - 12,000 = 0

This is quadratic equation. Based on the quadratic formula:

ax² + bx + c = 0      ⇒  

In the equation w² - 20w - 12,000 = 0, a = 1, b = -20, c = -12000

Thus:

So, width w can be either

or

Since, the width cannot be a negative number, the width of the field is 120 feet.

6 0
2 years ago
Read 2 more answers
9(w - 2) = – 18<br> someone help me
drek231 [11]

Step-by-step explanation:

First multiply

9w - 18 = - 18

9w = - 18 + 18

9w = 0

w = 0 / 9 = 0

w = 0

6 0
3 years ago
Read 2 more answers
Other questions:
  • Dog weighs 5 kg or 50 kilogram
    10·2 answers
  • Given square ABCD. Two isosceles triangles ABP and BCQ are constructed with bases
    12·1 answer
  • rex house is located at point (2, -5) on a coordinate plane. The location of Terrell's house is the reflection of the location o
    8·1 answer
  • Which algebraic expression represents the phrase "the quotient of negative eight and the sum of a number and three?"
    5·2 answers
  • Select the equation that is true for all values of x.
    10·1 answer
  • Y = 1/4x<br><br> x + 4y = 8<br> pls help
    6·1 answer
  • 1. If the demand (price) function is P(Q) = 100 − 4Q, find expressions for revenue function, R(Q) and marginal revenue function,
    14·1 answer
  • From a group of 10 children, a team of 5 (the red team) is randonnly chosen. The remaining 5 children
    7·1 answer
  • How much times bigger is 1 to 1/4
    7·1 answer
  • J
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!