9/35 x 7/16 x 20/21 =

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Answers

Answer 1

Answer: $(9)/(35)\cdot(\not7^1)/(16)\cdot(20)/(\not21_3)=(9)/(35)\cdot(1)/(\not16_4)\cdot(\not20^5)/(3)=(\not9^3)/(35)\cdot(1)/(4)\cdot(5)/(\not3_1)=(3)/(\not35_7)\cdot(1)/(4)\cdot(\not5^1)/(1)\n\n=(3)/(7)\cdot(1)/(4)\cdot(1)/(1)=(3\cdot1\cdot1)/(7\cdot4\cdot1)=(3)/(28)$

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Axis of symmetry and vertex of F (x) = x2 + 4x -5

Answers

axis of symmetry is also the x coordinate of the vertex
if you have
f(x)=ax^2+bx+c
vertex x coordinate is
-b/2a
a=1
b=4
-4/2(1)=-4/2=-2
x coordinate of vertex=-2 aka axis of symmmetry
find y coordinate
input -2 for x
y=(-2)^2+4(-2)-5
y=4-8-5
y=-9

axis of symmetry is x=-2
vertex is (-2,-9)

r= -b/2a = -4/2=-2 k=f(r)=-2^2-8-5=-9 (-2,-9)

Which equation is true for the value x = 15?2(x + 3) = 40
2(x − 5) = 30
2(x + 5) = 40
x + 2x = 30
3x − x = 45

Answers

Equation 2(x + 5) = 40 is true for the value x = 15. Therefore, option C is the correct answer.

Given that, x=15.

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

1) Put x=15 in 2(x + 3) = 40 and simplify

2(15+3)≠40

36≠40

2) Put x=15 in 2(x − 5) = 30 and simplify

2(15-5)≠30

20≠30

3) Put x=15 in 2(x + 5) = 40 and simplify

2(15 + 5) = 40

40=40

4) Put x=15 in x + 2x = 30 and simplify

15+2×15 ≠ 30

45 ≠ 30

5) Put x=15 in 3x − x = 45 and simplify

3×15 -15 ≠ 45

30 ≠ 45

Equation 2(x + 5) = 40 is true for the value x = 15. Therefore, option C is the correct answer.

To learn more about an equation visit:

brainly.com/question/14686792.

#SPJ6

Answer:

The Answer Would Be, C (the middle one)

Step-by-step explanation:

(x=15+5)=20 times 2=40

1. Use the formula to estimate the temperature when n = 100 chirps/min. Round to the nearest whole number, if necessary.n
The formula F= +37 estimates the temperature F in degrees Fahrenheit
4
when crickets chirp n times per minute.
O 59°F
62°F
63°F