MATHEMATICS HIGH SCHOOL

The value of 3.6 - 2.4 ÷ (-0.8) is _____.
6.6
0.6
-1.5
3

Answers

Answer 1
Answer: I hope this helps you
Answer 2
Answer:

Answer:

6.6

Step-by-step explanation:

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Find the seventh term of the expansion of (-3x-2y)^11
42) According to the 2000 Census the population of Canton was 7,720. Holly Spring's population was 3,200. Canton's population increases at a rate of 80 people a year and Holly Spring's population increases by 120 people a year. Which equation may be used to determine the number of years before the populations are equal?
Define parallelogram

If the area of ABC is 20 cm2, what is the area of PQR? Show your work.

Answers

Since the triangles are similar, the first thing to do is find the scale factor.
 We have then:
 k = 6/4 = 3/2
 Then, the area will be given by:
 A '= k ^ 2 * A
 Substituting values:
 A '= ((3/2) ^ 2) * (20)
 A '= 45 cm ^ 2
 Answer:
 The area of PQR is:
 A '= 45 cm ^ 2

Answer:

Area of ΔPQR = 45 cm²

Step-by-step explanation:

From the given figure we can see that triangle ABC and triangle PQR are similar triangles.

If two triangles are similar the the ratio of area of two triangle is equal to the square of ratio of corresponding sides

To find the area of triangle PQR

Ar(ABC) = 20, AB = 4 cm and PQ =6 cm

From figure we can write,

Ar(ABC)/ar(PQR) = (AB/PQ)²

20/ar(PQR) = (4/6)²

20/ar(PQR) = 16/36

ar(PQR) = (36 x 20)/16 = 45 cm²

Kyla applied rm ◦ T0,3 to triangle ABC. What mistakes did she make? Check all that apply.She applied the rotation to the triangle first.
She applied the reflection to the triangle first.
She changed the size of the triangle instead of just applying a translation.
She translated the triangle down instead of just applying a reflection.
She applied a rotation instead of a reflection

Answers

Answer: she applied the reflection to the triangle first

&

she changed the size of the triangle instead of just applying a translation.

Step-by-step explanation:

Answer:

B & C

Step-by-step explanation:

About how far can a subway car travel in 1 hour if its average is 0.96 miles per minute?

Answers

Answer:

57.6 miles per hour

Step-by-step explanation:

0.96 miles per minute

60 minutes per hour

0.96X60=57.6 miles per hour
57.6 is the answer. have a great dayyyyy :)

Quadratic formula 2x²+9x-4=0

Answers

2x^2+9x-4=0 \n \na=2 , b =9 , \ c=- 4 \n \n\Delta = b^(2)-4ac = 9^(2)-4*2* (- 4)= 81+32 =113 \n \nx_(1)=(-b-√(\Delta ))/(2a) =(-9- √(113))/(4) \n\nx_(2)=(-b+√(\Delta ))/(2a) = (-9+√(113))/(4)
2x^2+9x-4=0\ \ \ \ /:2\n\nx^2+(9)/(2)x-2=0\n\nx^2+2x\cdot(9)/(4)+((9)/(4))^2-((9)/(4))^2=2\n\n(x+(9)/(4))^2-(81)/(16)=2\n\n(x+(9)/(4))^2=(32)/(16)+(81)/(16)\n\n(x+(9)/(4))^2=(113)/(16)\iff x+(9)/(4)=-\sqrt(113)/(16)\ \vee\ x+(9)/(4)=\sqrt(113)/(16)\n\nx=-(9)/(4)-(√(113))/(4)\ \vee\ x=-(9)/(4)+(√(113))/(4)\n\nx=-(9+√(113))/(4)\ \vee\ x=-(9-√(113))/(4)

X varies inversely with y and x = 8 when y = 10, what is the value of y when x=6

Answers

The right answer for the question that is being asked and shown above is that:

x = k (1/y)
k = xy

x1y1 = x2y2
8*10 = 6y2
80 = 6y2
y2 = 40/3

So the answer is 40/3
X varies inversely with y and x = 8 when y = 10, what is the value of y when x=6

Solve and then use estimation to make sure your answer is reasonable. Kyle can read 22 pages of his book in an hour. Kyle read for 114.5 hours last summer.

How many pages did Kyle read last summer?

Answers

114.5 hours = 6870 minutes
∴ 6870 ÷ 22 = 312.2727273
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