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
Finger [1]
3 years ago
12

In algebra (grade 7) :-

Mathematics
2 answers:
GalinKa [24]3 years ago
6 0

Step-by-step explanation:

+ and - make( -)

+ and + make(+)

- and + make(-)

- and - make (+)

Gnom [1K]3 years ago
3 0
1) -
2) +
3) -
4) +

Whenever the signs are opposite, it’s negative. Whenever signs are same, it’s positive.
You might be interested in
Which graph shows the axis of symmetry for the function f(x) = (x – 2)2 + 1? On a coordinate plane, a vertical dashed line at (n
Deffense [45]

The axis of symmetry of f(x) is:

On a coordinate plane, a vertical dashed line at (2, 0) is parallel to

the y-axis ⇒ 2nd answer

Step-by-step explanation:

The vertex form of a quadratic function is f(x) = a(x - h)² + k, where

  • (h , k) are the coordinates of its vertex point
  • The axis of symmetry of it is a vertical line passes through (h , 0)
  • The minimum value of the function is y = k at x = h

∵ f(x) = a(x - h)² + k

∵ f(x) = (x - 2)² + 1

∴ a = 1 , h = 2 , k = 1

∵ The axis of symmetry of f(x) is a vertical line passes through (h , 0)

∴ The axis of symmetry of f(x) is a vertical line passes through (2 , 0)

∵ Any vertical line is parallel to y-axis

∴ The axis of symmetry of f(x) is a vertical line parallel to y-axis and

   passes through (2 , 0)

The axis of symmetry of f(x) is:

On a coordinate plane, a vertical dashed line at (2, 0) is parallel to

the y-axis

   

Learn more:

You can learn more about quadratic function in brainly.com/question/9390381

#LearnwithBrainly

6 0
3 years ago
Read 2 more answers
PLS HELP ME !!!!<br> The last one is (x+2)^2 + (y-1) ^2 = 12
ladessa [460]

Answer:

its the first one or the last one

Step-by-step explanation:

i got the same thing on the graph sry

7 0
3 years ago
Bobby will buy coffe and hot chocolate for his co-workers each cup of coffe costs $2.25 and each cup of hot chocolate costs $1.5
snow_lady [41]
He buys three cups of hot choclate cause 1.50*3= 4.50
and he buys 5 cups of coffe cause 2.25*5=11.25
and 11.25 + 4.50=15.75

3 0
3 years ago
If cos -105º = -0.26 and csc -105º = -1.03, then cos 105º = and csc 105º = .
andreyandreev [35.5K]

Answer:

cos (105°) = - 2.6

csc (105°) = 1.03

Step-by-step explanation:

Given that cos (-105°) = - 0.26 {The negative sign is due to the angle - 105° lies in the third quadrant where cos value is negative}

Again, given that csc (- 105°) = - 1.03 {{The negative sign is due to the angle - 105° lies in the third quadrant where csc value is negative}

Now, cos (105°) = - 2.6, because 105° lies in the second quadrant and here cos value is negative.

And csc (105°) = 1.03, because 105° lies in the second quadrant and here csc value is positive. (Answer)

3 0
3 years ago
I'm completely lost
Vladimir [108]
Let x be the number of racing bikes, and let y be the number of mountain bikes.
1) 140x + 110y = 26150
2) 180x + 120y = 31800
Solve for one of the variables and plug that in to the other equation:
From equation 1: 140x = 26150 - 110y
x = (26150-110y)/140
Plug this into equation 2:
180((26150-110y)/140) = 31800
Solve for y, and find that y = 85 (the number of mountain bikes).
Plug that y into either equation to find x:
140x + 110(85) = 26150
x = 120 (the number of racing bikes).
So the answer is: 120 racing bikes and 85 mountain bikes.
4 0
3 years ago
Other questions:
  • For what value of x is 62+15=x+22 true?
    5·1 answer
  • If the area of the trapezoid below is 98 square units what is the value of x
    5·2 answers
  • Plz help! Convert 3/5 into fractions with a denominater of 15 A.9/15 B. 3/15 C.5/15 D. 6/15
    13·1 answer
  • Nearly 4 out of 7 people choose vanilla as their favorite ice cream flavor. If 182 people attended an ice cream social, approxim
    11·1 answer
  • Mr. Loureiro simplified the expression 3x + 5(3x + 6) as 18x + 6. Is he
    5·1 answer
  • Which basic construction is shown here?
    14·2 answers
  • Simplify the expressions<br> (36.57-25.89).(66.32+11.75)
    7·2 answers
  • Marybeth has 2 quarters and 5 nickels. What percentage of a dollar does she have?
    15·1 answer
  • A line passes through the point (-8, 6) and has a slope of
    5·1 answer
  • Answer question b......
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!