3 years ago

The Spanish version of Michelle Obama's book,

Mathematics

1 answer:

Nina [5.8K]3 years ago

4 0

359 is the correct answer for the English one I think

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41. What is the image of O(- 3, - 2) after two reflections, first across the line y = - 5 , then across the line x = 1 ? (1 poin

liberstina [14]

Answer:

D(5,-8)

Step-by-step explanation:

The given point is (-3,-2)

When we reflect in the line y=k, we use the rule (x, 2k-y)

This implies that:

$(-3, - 2)\to (-3, 2*-5--2)$

$(-3, - 2)\to (-3, - 8)$

When we reflect in the line x=k, we use the rule

$(x,y)\to (2k-x,y)$

Now we have x=1

This implies that:

$( - 3, - 8)\to (2 \times 1- - 3, - 8)$

$( - 3, - 8)\to (5, - 8)$

4 0

4 years ago

A cube has a volume of 125 cubic inches. What is the length of each edge?

Phantasy [73]

Answer:

1.95

Step-by-step explanation:

8 0

3 years ago

Rewrite the expression as an algebraic expression in x.<br> tan(sin−1(x))

solmaris [256]

Let $tan^{-1} x=\alpha$
Then it can be shown by using a right-angled triangle and the rule of Pythagoras that $\alpha= tan^{-1} \frac{x}{ \sqrt{1-x^{2}} }$
Therefore
$tan(sin ^{-1} (x))=\frac{x}{ \sqrt{1-x^{2}} }$

7 0

4 years ago

Write the Expression in standard form by expanding and combining like terms 4(8m-7n) +6(3n-4m)

Elina [12.6K]

Standard for is x × 10 ^I
where,
I = indice
10 > x < 0
you cannot write this is standard form with putting in what they stand for. However you can simplify it -

4(8m-7n) +6(3n-4m)
32m - 28n + 18n - 24m
8m - 10n

but hey I am from England do what we call standard form might be different

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bn%7D%7B7%7D" id="TexFormula1" title="\frac{n}{7}" alt="\frac{n}{7}" align="absmiddle

sashaice [31]

Answer:

n= -3.5

Step-by-step explanation:

n/7 - 12 = 5n +5

+12 +12

n/7 = 5n+17

*7 *7

n = (5n+17)*7

n = 35n + 119

-35n -35n

-34n = 119

/-34 /-34

n = -3.5

3 0

3 years ago