Mathematics High School

Which of the following expressions are equivalent to -(-8/-4)
1. -(-8/4)
2. 2
3. none of the above

Answers

Answer 1

Answer:

None of the above

Step-by-step explanation:

Related Questions

Explain why dividing each side of \small 3x^2=6x by \small 3x is not a reliable way to solve the equation.

Answers

Answer:

See Explanation

Step-by-step explanation:

Given

[tex]3x^2 = 6x[/tex]

Required

Why dividing by [tex]3x[/tex] is not reliable

The reason is that, the given expression is a quadratic equation and as such, it will most likely have two solutions.

So, when the expression is divided by [tex]3x[/tex], the solution will be [tex]x = 2[/tex], leaving out the other possible solution.

The right way is:

[tex]3x^2 = 6x[/tex]

Subtract 6x from both sides

[tex]3x^2 - 6x = 6x - 6x[/tex]

[tex]3x^2 - 6x = 0[/tex]

Factorize

[tex]3x(x - 2) = 0[/tex]

Split

[tex]3x = 0\ or\ x - 2 = 0[/tex]

Solve for x in both cases:

[tex]x = 0\ or\ x = 2[/tex]

This is 7th grade math just trying to see if I’m doing it right so I need this answer please hurry

Answers

Answer:

I assume you are trying to find the area of it, then it would be 182m.^2

Help pls!! Find the value of x and the measure of angle C

Answers

Answer:

x= 34, <C = 126°

..................

I didn't work it out...I just put the value of x in each option till I got angle c correct...and the only one that worked was the third option

Which order pair could represent the location of point h

Answers

What does the work look like first

PLEASE HELP ME!! I WILL GIVE BRAINLIEST. ITS DUE IN AN HOUR

Answers

Answer:

1. c/5=3.25

2. 16.25

Answer:

The last box.

Step-by-step explanation:

The "c/5" means c divided by 5.

plz give some one answrer​

Answers

Answer:

x=120 (opp. angles of //gram)

Step-by-step explanation:

Because DA//CB and AB//DC (given)

Therefore ABCD is a parallelogram (opp. sides equal)

Therefore,

∠DAB = ∠DCB (opp. ∠s of //gram)

x = 120

HELP WILL GIVE BRainlist 20 points

Answers

Answer:

11. x = 5

12. x = 24

Step-by-step explanation:

11.

8x° + 140° = 180°

(Linear pair angles)

8x° = 180° - 140°

8x° = 40°

x ° = 40°/8

x° = 5°

x = 5

12.

2x° + 42° = 90°

(complementary angles)

2x° = 90° - 42°

2x° = 48°

x ° = 48°/2

x° = 24°

x = 24

I don’t understand and need help please.Thank you

Answers

Answer:

yes

Step-by-step explanation:

nice

$55,000 at 16% compounded
semiannually for 2 years

Answers

hope Answer:

74.826.89

Step-by-step explanation:

hopefully helps

Answer: equation for compound interest A=P(1+r/n)^nt

Answer: $74,826.89

Step-by-step explanation: Fill in the numbers for the formula!

At a sale, a camera was reduced by $8. This represented 10% of the
original price. On the last day of the sale, the camera was sold at 75% of
the original price. What was the final selling price?

Answers

Answer:

The answer is 60.

Step-by-step explanation:

1. 8*10=80 #original price

2. 80.....100%

x...... 75%

=> 100x = 6000 => 60

NEED HELP WITH THESE

f(x)=x^2-x+1
g(x) = 5 - 3x

Evaluate the following.
1) f(-1)
2)g( -8)
3)f( 1)
4) g(5)
5) f(3)
6) g(-3)

Answers

Step-by-step explanation:

1 .f(x)=[tex]x^{2}[/tex]-x+1

   f(-1)= (-1)-(-1)+1

   f(-1)= 1+1+1

      = 3

3.f(x)=[tex]x^{2}[/tex]-x+1

 f( 1)=(1)-1+1

  f( 1)=1-1+1

        =1

5. f(x)=[tex]x^{2}[/tex]-x+1

    f(3)=[tex](3)^{2}[/tex]-3+1

         = 9-3+1

          =7

2. g(x) = 5 - 3x

 g( -8)=5-3(-8)

g( -8)=5+24

        =29

4.g(x) = 5 - 3x

g(5)=5-3(5)

 g(5)=5-15

       =-10

6.g(x) = 5 - 3x

   g(-3)=5-3(-3)

 g(-3)=5+9

         =14

Please help me I’ll mark brainliest:)

Answers

Answer:

x = 4

Step-by-step explanation:

answer: x=4

explanation: use the pythagorean theorem.
5^2= x^2 + 3^2
25=x^2+9
16=x^2
x=4

what percent of 98 is 74​

Answers

Answer:

75.51%

Step-by-step explanation:

hopefully this helps

x/100 = 74/98

98x = 7,400

x = 7,400/98

× = 75.51 % of 98

Find the Mean of the data set 3,3,4,5,6,7,7

Answers

Answer:

5

Step-by-step explanation:

3+3+4+5+6+7+7 = 35

35/7 = 5

Izzy is saving up for a road trip that is happening6 weeks from today. At this moment, Izzy has $90 in her savings account. She plans on saving $25 a week.

Answers

Answer:

$210

Step-by-step explanation:

Given data

time = 6 weeks

initial amount= $90

saving per week = $25

Hence the expression for the total savings after the 6 weeks is given as

y= mx+c

where

m= $25

x= 6 weeks

c= $90

substitute

y=25*6+90

y= 150+60

y= $210

Hence the total amount after 6 weeks is $210

If the interest 4,000 for 4 years is 1,280 what is the interest rate

Answers

Answer:

For example, with a $4,000 deposit and an annual interest rate of 8 percent, the simple interest after four years would be $1,280. This is calculated by multiplying the principal (P) by the rate (R) and by the rate of time (T): 4,000 x 0.08 x 4 = 1,280.

Step-by-step explanation:

I hope the answer help you

Consider the triangles.

Triangle C D E. Angle C is blank, angle D is 87.3 degrees, angle E is 35.5 degrees. Triangle R S T. Angle R is blank, angle S is 57.2 degrees, angle T is 87.3 degrees. Answer the questions about these triangles. What is the measure of angle C? Which angle corresponds to angle C? What can be concluded about the triangles?

Answers

Answer:

C = 57.2

Angle S corresponds to angle C

Both triangles are symmetrical to each other.

Answer:

What is the measure of angle C?

57.2

Which angle corresponds to angle C?

angle S

What can be concluded about the triangles?

The triangles are similar.

Step-by-step explanation:

25 ft 8 yd 11 in.
Which is greater?

Answers

Answer:

25 ft

Step-by-step explanation:

8 yd = 24 ft

11 in < 1 ft

8 yd < 25 ft

g(n) = 1 + 3
h(n) = -n -1
Find: (g/h)(-5)

Answers

Answer: look at the picture

Step-by-step explanation: Hope this help :D

-Let solve for g

g/h=-5

Step 1: Multiple both sides by h.

g=-5h

Answer: g=-5h

5(4x+1) what is it?

Answers

Answer:

20x+5

can I get brainiest

Step-by-step explanation:

Answer:

20x+5

Step-by-step explanation:

Distribute

5 ( 4 + 1 )

2 0 + 5

help me! I’m behind in school if you do I’ll give you extra points and stars. I’ll give you a good report.

Answers

Answer:

The answer is D, approximately 6.8

Step-by-step explanation:

(I'm gonna be honest, I just looked it up)

Answer:: D I’m not sure tho but I hope it helps

Urban rail systems have been proposed to alleviate traffic congestion, but results in many cities have been cited as evidence that this approach to traffic management is ineffective. For example, a U.S. city that opened three urban rail branches experienced a net decline of 3,100 urban rail commuters during a period when employment increased by 96,000. Officials who favor urban rail systems as a solution to traffic congestion have attempted to counter this argument by noting that commuting trips in that city represent just 20 percent of urban travel.
The response of the officials to the claim that urban rail systems are ineffective is most vulnerable to criticism on the grounds that it
A) presents no evidence to show that the statistics are incorrect
B) relies solely on general data about U.S. cities rather than data about the city in question
C) fails to consider that commuting trips may cause significantly more than 20 percent of the traffic congestion
D) fails to show that the decline in the number of urban rail commuters in one U.S. city is typical of U.S. cities generally
E) provides no statistics on the use of urban rail systems by passengers other than commuters

Answers

Answer:

C) fails to consider that commuting trips may cause significantly more than 20 percent of the traffic congestion

Step-by-step explanation:

The correct option is - C) fails to consider that commuting trips may cause significantly more than 20 percent of the traffic congestion

Reason -

Option A is incorrect because the statistics can not be incorrect.

Option B is incorrect because they are not talking about the city.

Option C is correct because Urban rail reduces congestion.

Option D is incorrect because the opposers cited the example of one city and the supporters are presenting evidence in the case of that city itself.

Option E is incorrect because they are providing an explanation for why the commuters data given by opposers is not relevant. The opposers talked about commuters.

First correct answer will get Brainliest - due today

Dora has three candles, which will burn for 3, 4 and 5 hours, respectively. If she wants to keep two candles burning at all times, what is the greatest number of hours she can burn the candles? (Dora has a clock that she can use to time the candles.)

Answers

Answer:

3 hrs 38.2 min, Candle 2 will be three times the length of candle 1

Step-by-step explanation:

If Dora burns candles that burn for 4 and 5 hours they burn for 9 hours combined one after another.

What are permutation and combination?

In arithmetic, combination and permutation are two different ways of grouping elements of a set into subsets. In combination, the components of the subset can be recorded in any order. In a permutation, the components of the subset are listed in a distinctive order.

here,
Dora has three candles, which will burn for 3, 4, and 5 hours,
The combination of the hours of burning,
3 + 4 = 7 hours
4 + 5 = 9 hours
3 + 5 = 8 hours

Thus, if Dora burns candles that burn for 4 and 5 hours they burn for 9 hours combined one after another.

Learn more about permutations and combinations here: https://brainly.com/question/2295036
#SPJ2

Notebook costs $5,write an expression to show how much (n) notebook costs.

Answers

To find the total cost you would multiply the cost of a notebook by the number of notebooks purchased:

Total = 5n

**EASY**

Determine the intercepts of the line -

2x + 5y = -6


Y-intercept: (_ , _)

X-intercept: (_ , _)

Answers

The answer is
X intercept : -3,0
Y intercept: 0, -6/5
The answer is y-intercept: (0, -6/5) and X-intercept: (-3, 0)

Evaluate 7 with an exponent of -2

Answers

Answer:

7 x -7 = -49

Step-by-step explanation:

To solve 7 to the power of -2 we multiply 7 by -7.

(っ◔◡◔)っ ♥ Hope It Helps ♥

The value of 7 with an exponent of -2 is 1/49 .

Given,

7 with an exponent of -2.

Now,

Let us simplify the given statement.

[tex]7^{-2}[/tex] = 1/7²

Value of 7² is 49.

Thus the value of 7 with an exponent of -2  is 1/49 .

Know more about exponent,

https://brainly.com/question/602904

#SPJ6

Help me..............

Answers

Answer:

the answer is 30 I hope this helps

Here's a problem for you to try.
Find the sum and express it in simplest form.
(2x² + 3x - 4) + (x²-x-2)
Enter the correct answer.
OOD
DONE
Clow all
ĐOO

Answers


3x^2 + 2x - 6

Just add the same terms together. You don’t need to do anything else in this question.

Solve for C.
Thank you to whoever answers!!!!!!!!!!!!!!!!!!!

Answers

Answer:

c=7

Step-by-step explanation:

How to solve your problem

8=−3+29

8=−3c+298=-3c+298=−3c+29

Solve

1

Subtract

29

292929

from both sides of the equation

8=−3+29

8=−3c+298=-3c+298=−3c+29

8−29=−3+29−29

8−29=−3c+29−298{\color{#c92786}{-29}}=-3c+29{\color{#c92786}{-29}}8−29=−3c+29−29

2

Simplify

3

Divide both sides of the equation by the same term

4

Simplify

Solution

=7

Hope this helps!

Have a great day!

-Lea

First we add 29 to both sides. 29+8=37
Our new equation is 37=-3c then we divide by three on both sides.
Your answer is 37/3

choices:
x=360-114
x=114-90
360=x +90+114​

Answers

Answer:

see explanation

Step-by-step explanation:

The sum of the angles around D = 360° , then

x = 360 - (114 + 90) ← equation to find x

  = 360 - 156

  = 204

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