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
Natasha2012 [34]
2 years ago
13

The problem is in the pic​

Mathematics
2 answers:
Otrada [13]2 years ago
8 0

Answer:

B

Step-by-step explanation:

The solutions are at (-2,0) and (1,-3)

kolezko [41]2 years ago
4 0

Answer:

B.

Step-by-step explanation:

The solutions are the two points of intersection of the two functions.

We can read the coordinates of the points off the graph.

Answer: B. (-2, 0), (1, -3)

You might be interested in
5-7
uranmaximum [27]

Answer:

the third option

Step-by-step explanation:

what does that mean ?

to "rationalize" it is to transform it into a rational number (that is a number that can be described as a/b, and is not an endless sequence of digits after the decimal point without a repeating pattern).

a square root of a not square number is irrational (not rational).

so, what this question is asking us to get rid of the square root part in the denominator (the bottom part).

for this we need to multiply to and bottom with the same expression (to keep the whole value of the quotient the same) that, when multiplied at the bottom, eliminates the square root.

what can I multiply a square root with to eliminate the square root ? the square root again - we are squaring the square root.

so, what works for 9 - sqrt(14) as factor ?

we cannot just square this as

(9- sqrt(14))² = 81 -2sqrt(14) + 14

we still have the square root included.

but remember the little trick :

(a+b)(a-b) = a² - b²

without any mixed elements.

so, we need to multiply (9-sqrt(14)) by (9+sqrt(14)) to get

81-14 = 67 which is a rational number.

therefore, the third answer option is correct.

7 0
2 years ago
Write an equation of the line in slope-intercept form. (0,2)(3,3)​
aivan3 [116]

Answer:

Slope = 1/3

Step-by-step explanation:

Hope this helps.

6 0
2 years ago
Read 2 more answers
find the critical values and rejection regions for the indicated T Test level of significance a and sample size n two tailed tes
Vladimir [108]

Answer:

no

Step-by-step explanation:

no

7 0
3 years ago
How do you answer the questions in the picture?? Please helppp!!
Degger [83]

Answer:

a) 1.50 m/s²

b) 675m

c) 11.25 m/s

Step-by-step explanation:

1. a) Acceleration can be found from the gradient of a speed-time graph, which is the graph we have here.

Notice that the graph from t=0 to t=10 has the same gradient thoughout (since it is a straight line). Hence, the acceleration when t=4 is the same as the acceleration from t=0 to t=10.

To find the gradient of the graph from t=0 to t=10, use the gradient formula below:

gradient=\frac{y1 - y2}{x1 - x2}

The coordinates of the point at t=0 is (0,0) and the point at t=10 is (10,15).

Thus, gradient

=  \frac{15 - 0}{10 - 0}  \\  =  \frac{15}{10}  \\  = 1.5

Therefore the acceleration when t=4 is 1.50 m/s².

*Acceleration is the rate of change of velocity (or speed).

b) Distance travelled can be found by calculating the area under a speed-time graph.

The area under the graph is the orange trapezium that the question has shaded for you already.

Formula for area of trapezium= ½(a+b)(height)

a+b is the total length of the two parallel horizontal lines of the trapezium.

Let the top line be a and the bottom line be b.

length of a= distance between (10,15) and (40,15)

Length of a

= 40 -10

= 30 units

Length of b

= 60 -0

= 60 units

height of trapezium= 15 units

Area of trapezium

= ½(30 +60)(15)

= 675 units²

Thus, the distance travelled is 675m.

c) Avg speed= total distance ÷ total time

From part b, we know that the total distance travelled is 675m. The total time is 60s since the graph is from t=0 to t=60.

Hence, average speed

= 675 ÷60

= 11.25 m/s

7 0
3 years ago
Which of the following rational functions is graphed below?
Assoli18 [71]

Answer: A—f(x)=1/(x-3)(x+3)

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Write 3 equivalent expressions for 12x-36
    6·1 answer
  • You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much
    15·1 answer
  • Please someone solve this, this is my third time reposting this question so yea please be quick
    14·1 answer
  • HELPPPP FAST!!! get brainliest if right
    7·2 answers
  • Solve this system of equations by graphing. First graph the equations, and then type the solution. y= x+3 y=2x
    9·1 answer
  • Please help and thank you
    15·1 answer
  • Parallelogram DEFG is graphed on the coordinate plane. It has coordinates D(4, 1), E(10, -3), F(p, -4), and G(-5, q).
    13·1 answer
  • Evaluate the expression<br> cos(30°)=
    15·2 answers
  • Point H is the circumcenter of triangle JKL.
    10·1 answer
  • What is the total surface area of a square pyramid with a base length of 10 meters and a slant height of 13 meters?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!