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expeople1 [14]
3 years ago
7

two fifths of the 6th graders want to be in athletics next year what decimal of sixth graders want to be in athletics

Mathematics
1 answer:
andre [41]3 years ago
4 0

Answer:

0.4

Step-by-step explanation:

hi hi hi hi gigi viububu

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The vector wequalsaiplusbj is perpendicular to the line axplusbyequalsc and parallel to the line bxminusayequalsc. It is also tr
Likurg_2 [28]

Answer:

\theta=45^{\circ}

Step-by-step explanation:

We are given that the equation of lines

x+\sqrt 3y=1

(1-\sqrt 3)x+(1+\sqrt 3)y=8

According to question

The vector perpendicular to the lines is given by

i+\sqrt 3j and (1-\sqrt 3)i+(1+\sqrt 3)j

Therefore, the  angle between two vectors is given by

cos\theta=\frac{a_1a_2+b_1b_2}{\sqrt{a^2_1+b^2_1}\sqrt{a^2_2+b^2_2}}

Using the formula

cos\theta=\frac{1(1-\sqrt 3)+\sqrt 3(1+\sqrt 3)}{2\times 2\sqrt 2}

cos\theta=\frac{1-\sqrt 3+\sqrt 3+3}{4\sqrt 2}=\frac{1}{\sqrt 2}

cos\theta=cos 45^{\circ}

\theta=45^{\circ}

Hence, the acute angle between the lines is given by

\theta=45^{\circ}

3 0
3 years ago
the sum of three consecutive numbers is five times the difference of the middle number and 22. find the numbers.
adelina 88 [10]

Let <em>n</em> be the smallest of the three numbers. Then

<em>n</em> + (<em>n</em> + 1) + (<em>n</em> + 2) = 5 ((<em>n</em> + 1) - 22)

Solve for <em>n</em> :

3<em>n</em> + 3 = 5 (<em>n</em> - 21)

3<em>n</em> + 3 = 5<em>n</em> - 105

2<em>n</em> = 108

<em>n</em> = 54

Then the three numbers are 54, 55, and 56.

5 0
3 years ago
I need help this is algebra one and it is due tomorrow need help on this question.number 15
Mademuasel [1]
(p>64) divided by 4 is less than or equal to w
5 0
4 years ago
Find the lcd of the pair of expressions
STALIN [3.7K]

\frac{2}{7}  {x}^{10}  {y}^{4}  \: and \:  \frac{2}{14}  {x}^{8}  {y}^{7} \\ lcd = 14 {x}^{10}   {y}^{7}
Answer is
14 {x}^{10}  {y}^{7}

When it's powered numbers, remember to choose the one with the largest power. For example,
{x}^{10}
And
{x}^{8}
Choose 10, same goes to y, where you choose 7 not 4 since 7 is larger.

Hope this helps. - M
4 0
3 years ago
Vicky plans to wallpaper this wall. She buys
Gnom [1K]

Answer:

approx 31.24 euro

Step-by-step explanation:

area of vickys wall =5.7 × 2.8=15.96

area covered by one wallpaper=0.53×12=6.36

no of wall paper required=area of wall/area of 1 wall paper

=15.96÷6.36=2.50943396226

cost of 1 wall paper=12.45

cost of 2.50943396226 wall paper=31.2424528302 euro

7 0
3 years ago
Read 2 more answers
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