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3 years ago

7

A math book weighs 250 grams, a chemistry book weighs 200 grams, and a physics book weighs 250 grams. what is the total weight o

f the books in ounces?

1 answer:

Tems11 [23]3 years ago

8 0

The answer is 24.69 ounces

plz thank me, it keeps me motivated to answer more of your questions :)

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The television show 50 Minutes has been successful for many years. That show recently had a share of 16, meaning that among the

elena-14-01-66 [18.8K]

Answer:

0.1749

Step-by-step explanation:

We are to find the probability that none of the house-holds tuned to 50 minutes.

P(tune to 50 minutes) = 0.16

p = 0.16

q = 1 - 0.16

q = 0.84

number of households (n) = 10

x = number of households that tuned at 50 minutes

since none of the household tuned, then:

x = 0

Using the binomial expression:

$P(x=x) ^nC_xp^xq^{(n-x)}$

$P(x=0) = ^{10}C_0 \ (0.16)^0 \ (0.84)^{(10-0)}$

$P(x=0) = \dfrac{10!}{(10-0)!0!} \ (0.16)^0 \ (0.84)^{(10)}$

$P(x=0) = 1 \times \ 1 \times 0.1749$

P(x =0) = 0.1749

8 0

2 years ago

PLEASE HELP!! I’L MARK AS BRAINLIEST!!

nexus9112 [7]

It’s continuous:)
Hope this helps!

4 0

2 years ago

A line in standard (x,y) coordinate plane passes through the points (7.5 ,-4.25) and (12.5,-6) find the slope of the line

Svet_ta [14]

Answer:

Step-by-step explanation:

Rise over run. Difference in y values is rise. 4.25 -6 is -1.75. Run s difference in x values. 12.5 -7 is 5. Divide -1.75/5 to get -0.35 As a faction thats -7/20

4 0

2 years ago

Find the value of x. Round your answer to the nearest tenth.

tatuchka [14]

Answer:

x=5.7

Step-by-step explanation:

sin(35=x/10

6 0

3 years ago

Which equation is y = –6x^2 + 3x + 2 rewritten in vertex form? y = negative 6 (x minus 1) squared + 8 y = negative 6 (x + one-fo

mart [117]

Answer:

$y = -6(x - \frac{1}{2})^2 -\frac{7}{2}$

Step-by-step explanation:

Given:

$y = -6x^2 + 3x + 2$

Required

Rewrite in vertex form

The vertex form of an equation is in form of: $y = a(x - h)^2+ k$

Solving: $y = -6x^2 + 3x + 2$

Subtract 2 from both sides

$y - 2 = -6x^2 + 3x + 2 - 2$

$y - 2 = -6x^2 + 3x$

Factorize expression on the right hand side by dividing through by the coefficient of x²

$y - 2 = -6(x^2 + \frac{3x}{-6})$

$y - 2 = -6(x^2 - \frac{3x}{6})$

$y - 2 = -6(x^2 - \frac{x}{2})$

Get a perfect square of coefficient of x; then add to both sides

------------------------------------------------------------------------------------

<em>Rough work</em>

The coefficient of x is $\frac{-1}{2}$

It's square is $(\frac{-1}{2})^2 = \frac{1}{4}$

Adding inside the bracket of $-6(x^2 - \frac{x}{2})$ to give: $-6(x^2 - \frac{x}{2} + \frac{1}{4})$

To balance the equation, the same expression must be added to the other side of the equation;

Equivalent expression is: $-6(\frac{1}{4})$

------------------------------------------------------------------------------------

The expression becomes

$y - 2 -6(\frac{1}{4})= -6(x^2 - \frac{x}{2} + \frac{1}{4})$

$y - 2 -\frac{6}{4}= -6(x^2 - \frac{x}{2} + \frac{1}{4})$

$y - 2 -\frac{3}{2}= -6(x^2 - \frac{x}{2} + \frac{1}{4})$

Factorize the expression on the right hand side

$y - 2 -\frac{3}{2}= -6(x - \frac{1}{2})^2$

$y - (2 +\frac{3}{2})= -6(x - \frac{1}{2})^2$

$y - (\frac{4+3}{2})= -6(x - \frac{1}{2})^2$

$y - (\frac{7}{2})= -6(x - \frac{1}{2})^2$

$y +\frac{7}{2} = -6(x - \frac{1}{2})^2$

Make y the subject of formula

$y = -6(x - \frac{1}{2})^2 -\frac{7}{2}$

<em>Solved</em>

7 0

3 years ago

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