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IrinaK [193]
3 years ago
7

Maths WC Year 9 Winter homik Overview o B AN Question Progress Homework Progress FRUIK Solve x - 7x - 34 = 10​

Mathematics
1 answer:
Marizza181 [45]3 years ago
5 0

Answer:

-7.333333

Step-by-step explanation:

= x - 7x = 10 + 34

= -6x = 44

= x = 44/-6 = -7.333333

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Use long division to find the quotient below (x²+15x+56)÷(x+8)
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Use long division to find the quotient below (x²+15x+56)÷(x+8) = x + 7
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4 years ago
Multiply or divide as indicated<br> x^4•x^-2
Step2247 [10]

Answer:

x^2

Step-by-step explanation:

x^4\cdot x^{-2}= \\\\x^{4-2}= \\\\x^2

Hope this helps!

6 0
3 years ago
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Determine whether the set of vectors <img src="https://tex.z-dn.net/?f=%20v_%7B1%3D%283%2C2%2C1%29%2C%20v_%7B2%7D%20%3D%28-1%2C-
Korolek [52]
Since each vector is a member of \mathbb R^3, the vectors will span \mathbb R^3 if they form a basis for \mathbb R^3, which requires that they be linearly independent of one another.

To show this, you have to establish that the only linear combination of the three vectors c_1\mathbf v_1+c_2\mathbf v_2+c_3\mathbf v_3 that gives the zero vector \mathbf0 occurs for scalars c_1=c_2=c_3=0.

c_1\begin{bmatrix}3\\2\\1\end{bmatrix}+c_2\begin{bmatrix}-1\\-2\\-4\end{bmatrix}+c_3\begin{bmatrix}1\\1\\-1\end{bmatrix}=(0,0,0)\iff\begin{bmatrix}3&-1&1\\2&-2&1\\1&-4&-1\end{bmatrix}\begin{bmatrix}c_1\\c_2\\c_3\end{bmatrix}=\begin{bmatrix}0\\0\\0\end{bmatrix}

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4 0
3 years ago
Sheila went shopping and spent $120 on a coat. She then used 2/3 of the remaining money to buy a dress. She was left with 1/5 ot
Masja [62]

Answer:

Sheila had $300 at first

Step-by-step explanation:

Given that:

Sheila spent:

for coat = $120

Let the original money be x so,

dress for = $(2/3(x - 120 ))

Now she left with = 1/5x

Now by adding all the amounts we get the original amount x:

x = 120 + (2/3(x - 120)) + 1/5x

By simplifying:

x = 120 +  2/3x - 240/3 + 1/5 x

adding like terms:

x = 120 - 80 + 2/3*5/5x + 1/5*3/3x

x = 40 + (10+3)x/15

x = 40 + 13x/15

x - 13x/15 = 40

Taking LCM

(15x - 13x)/15 = 40

2x/15 = 40

Multiply both sides by 15/2

x = 40*15/2

x = $300

so Sheila had $300 at first

i hope it will help you!

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3 years ago
Describe a sequence of transformations that will map ΔABC onto ΔDEF as shown.
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Reflection over the x-axis, translation of 6 units left.
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