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3 years ago

Use common factors to write two fractions equivalent to 6/42.

Mathematics

1 answer:

lidiya [134]3 years ago

5 0

Answer:

3/21 and 12/84

Step-by-step explanation:

im a sophmore

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There are two drama classesoffered at a middle school. The 8th grade class has 13 fewer students than the 7th grade class. If th

Eddi Din [679]

Answer:

Class 8 has 27 and class 7 has 40

Step-by-step explanation:

8th (r) class has 13 fewer than 7th (x).
x -13 = r

Total for both classes = 67

r + x - 13 = 67
r + x = 80

80 divided by two = 40 (per class)

40 - 13 = 27

4 0

2 years ago

The principle of redundancy is used when system reliability is improved through redundant or backup components. Assume that a s

seropon [69]

Answer:

Probability that both such alarms fail is 0.03027

Step-by-step explanation:

Probability the alarm fails = 0.174 (this is calculated by dividing the percentage by 100 like: 17.4/100)

Probability that both such alarms fail = 0.174 * 0.174 = 0.03027

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3 years ago

Which angle is vertical to ∠3?

djverab [1.8K]

Answer:

Step-by-step explanation:

*Just a highly recommended guess.*

4 0

3 years ago

Read 2 more answers

A cube has a surface area of 486 cm2. What is the side length ?

astraxan [27]

A Cube, has all equal sides, namely, the length, width and height
are all equal to each other

so.. notice the picture added here
you have really, 6 squares, stacked up to each other at the edges

so...what is the Area of one of those squares?
well, if the sides are equal, let's say the side is "x" long, then
the Area is $x\cdot x \implies x^2$

well, you have 6 of those squares, thus $\bf \textit{surface area of a cube}=
\begin{cases}
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)+\\
(x\cdot x)\\
 --------------\\
 x^2+x^2+x^2+x^2+x^2\\
6x^2
\end{cases}
\\\\
\textit{we know the Area is }486\ cm^2\qquad thus
\\\\
\textit{surface area}=6x^2\implies 486=6x^2$

solve for "x", to get one side's length

3 0

3 years ago

Ann believes that y= 3x (x -7) is a quadratic function. Jordan says that she is wrong because the degree (highest exponent) is n

ad-work [718]

Answer:

Ann us correct. It's a quadratic function.

Step-by-step explanation:

Given equation is,

y = 3x(x - 7)

By converting this equation into the standard quadratic equation,

y = 3x² - 21x

Highest exponent of the polynomial equation is 2 (Exponent of highest degree variable x²). This decides that the given function is a quadratic function.

Therefore, Ann is correct. It's a quadratic function.

5 0

3 years ago