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iogann1982 [59]
3 years ago
5

a music store sells a used guitar for $120. This is $25 more than 1/2 the cost of a new guitar of the same brand. what is the co

st of a new guitar?
Mathematics
1 answer:
labwork [276]3 years ago
3 0

Answer:

$190.

Step-by-step explanation:

We can write the equation 120=25+1/2n where n is the cost of a new guitar. First, we subtract 25 from both sides to get 95=1/2n. Then, we multiply both sides by 2 to get 190=n. Therefore, the cost of a new guitar is $190.

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sashaice [31]
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8 0
4 years ago
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Assume u4 is not a linear combination of {u1,u2,u3}
Feliz [49]

Answer:

A. {u1,u2,u3,u4} is a linearly independent set of vectors unless one of {u1,u2,u3} is the zero vector.

Step-by-step explanation:

Given that u4 is not a linear combination of {u1,u2,u3}

This means there is no possibility to write u4 = au1+bu2+cu3 for three scalars a,b,and c.

This gives that u_4-au_1-bu_2-cu_3 \neq 0

This implies that these four vectors are not linearly dependent but linearly independent.

Hence option a is right.

A. {u1,u2,u3,u4} is a linearly independent set of vectors unless one of {u1,u2,u3} is the zero vector.

8 0
3 years ago
What is the solution to the system of equations below? y= -4/5 x + and y = –30
Naya [18.7K]

Answer:

x=37.5

Step-by-step explanation:

We need to find the solution to the following system of equations:

y = -\frac{4}{5} x and y=-30

By plugging the value of 'y' into the first equation we have that:

-30 = -\frac{4}{5} x ⇒ 30=\frac{4}{5} x

Solving for 'x' we have:

x=37.5

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8 0
3 years ago
A. 37<br>B. 53<br>C. 127<br>D. 217​
liberstina [14]
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Trust me, this was the one thing I was good at in school
7 0
3 years ago
The circumference of a circle is 22 cm.
valkas [14]

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\implies22 = 2 \times  \dfrac{22}{7}  r

\implies22 =  \dfrac{44}{7}  \times r

\implies \: r =  \dfrac{22 \times 7}{44}

\implies \boxed{ r =  \dfrac{7}{2} }

Now,

\bf \: Area \:  of  \: circle = \pi {r}^{2}

\rightarrow \:  \frac{22}{7}   \times  ({ \frac{7}{2}) }^{2}

\rightarrow \frac{22}{ \cancel7}  \times  \frac{ \cancel{49}}{4}

\rightarrow \: 22 \times  \frac{7}{4}

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\rightarrow \frac{77}{2}

\rightarrow \: 38.5 \: cm {}^{2}

Area of rectangle = 38.5 cm².

7 0
3 years ago
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