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3 years ago

What did the teenage yardstick say to its parents

Mathematics

1 answer:

NeX [460]3 years ago

7 0

Answer:

I want to stand on my own three feet

Step-by-step explanation:

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An isosceles triangle has two sides of equal length, a, and a base, b. The perimeter of the triangle is 15.7 inches, so the equa

ivolga24 [154]

2 a + b = 15.7
Since the sides are equal length, the equation is:
2 · 6.3 + b = 15.7
We can solve it:
12.6 + b = 15.7
b = 15.7 - 12.6
b = 3.1 cm

6 0

3 years ago

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What is the first step in solving the equation? +4= -2

adell [148]

Answer:

adding +2 on both sides to remove the -2 then it would be 2=0

Step-by-step explanation:

8 0

2 years ago

Make h the subject A=1/2(a+c)h

Tatiana [17]

Answer:

h = $\frac{2A}{a+c}$

Step-by-step explanation:

Given

A = $\frac{1}{2}$ (a + c)h

Multiply both sides by 2 to clear the fraction

2A = (a + c)h ( divide both sides by (a + c) )

$\frac{2A}{a+c}$ = h

3 0

3 years ago

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The life of light bulbs is distributed normally. The standard deviation of the lifetime is 20 hours and the mean lifetime of a b

FinnZ [79.3K]

Answer:

The probability of a bulb lasting for between 480 and 526 hours=0.74454

Step-by-step explanation:

We are given that

Standard deviation of the lifetime, $\sigma=20$ hours

Mean, $\mu=500$ hours

We have to find the probability of a bulb lasting for between 480 and 526 hours.

$P(480$

Hence, the probability of a bulb lasting for between 480 and 526 hours=0.74454

5 0

3 years ago

Find the vertex of f(x) = 3(x-7)(x+5)

Inessa05 [86]

Answer:

The vertex is at (1, -108).

Step-by-step explanation:

We have the function:

$f(x)=3(x-7)(x+5)$

And we want to find its vertex point.

Note that this is in factored form. Hence, our roots/zeros are x = 7 and x = -5.

Since a parabola is symmetric along its vertex, the x-coordinate of the vertex is halfway between the two zeros. Hence:

$\displaystyle x=\frac{7+(-5)}{2}=\frac{2}{2}=1$

To find the y-coordinate, substitute this back into the function. Hence:

$f(1)=3((1)-7)((1)+5)=3(-6)(6)=-108$

Therefore, our vertex is at (1, -108).

4 0

3 years ago

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