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3 years ago

9

In one hour Dele walks 8km. how long will it take her to walk 14km at the same rate

1 answer:

erastovalidia [21]3 years ago

8 0

Answer:

it will take her 2 hours and 45 minutes

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The sum of the measures of the angles is 180. The sum of the measures of the second and third angles is two times the measure of

grigory [225]

<h2>60,47,73</h2>

Step-by-step explanation:

Let the first angle be $a$ degrees

Let the second angle be $b$ degrees

Let the third angle be $c$ degrees

It is given that sum of angles is $180$ degrees.

so, $a+b+c=180$ ...(i)

It is given that sum of the measures of the second and third angles is two times the measure of the first angle.

$b+c=2\times a$ ...(ii)

It is given that the third angle is 26 more than the second.

$c=26+b$ ...(iii)

using (ii) and (iii),

$b+b+26=2a$

$b+13=a$

using (i),(ii) and (iii),

$a+b+c=a+a-13+26+b=a+a-13+26+a-13=3a$

$3a=180$

$a=60$

$b=a-13=60-13=47$

$c=26+b=26+47=73$

3 0

3 years ago

Find the length of the mid segment the diagram is not to scale

zepelin [54]

Using the left or right side of triangle, you can conclude that the midsegment will divide the triangle in both midlines of the sides. This means the length of the line would be half of the line below it. The equation would be:

47/4x+2= 94/ 4x+44
4x+44/ 4x+2 = 94/47
4x+ 44 / 4x+2 =2
4x+44 = 2(4x+2)
4x+44 = 8x+4
4x-8x= 4-44
-4x= -40
x= 10

Then the length of midline would be:
4x+2= 4(10)+2= 42

4 0

3 years ago

What does k and y equal?

Kaylis [27]

X and y vary directily means

y=kx

72=3k
divide both sides by 3
24=k

k=24
y=72

8 0

3 years ago

Anna completes a test that had 120 questions for a math competition. Each correct answer is worth +4 points, and each wrong answ

Sloan [31]

Answer:

40 correct and 80 incorrect

Step-by-step explanation:

40*4=160

80*2=160

8 0

3 years ago

Read 2 more answers

Consider the equation: 12x=13-x^212x=13−x 2 12, x, equals, 13, minus, x, squared 1) Rewrite the equation by completing the squar

Flauer [41]

Answer:

$(x + 6)^2 = 49$

$x = 1$ or $x = -13$

Step-by-step explanation:

Given

$12x = 13 - x^2$

Using Completing the Square

$12x = 13 - x^2$ ---- Add $x^2$ to both sides

$x^2 + 12x = 13 - x^2 + x^2$

$x^2 + 12x = 13$

Divide the coefficient of x by 2; then add the square to both sides

$x^2 + 12x + 6^2 = 13 + 6^2$

$x^2 + 12x + 36 = 13 + 36$

$x^2 + 12x + 36 = 49$

Factorize

$x^2 + 6x + 6x + 36 = 49$

$x(x + 6) + 6(x + 6) = 49$

$(x + 6)(x + 6) = 49$

$(x + 6)^2 = 49$

Hence, the equation is $(x + 6)^2 = 49$

Solving further

Take square root of both sides

$(x + 6) = \sqrt{49}$

$x + 6 = \±7$

$x = \±7- 6$

This implies that

$x = 7 - 6$ or $x = -7 -6$

$x = 1$ or $x = -13$

HEnce, the solutions are $x = 1$ or $x = -13$

6 0

3 years ago