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avanturin [10]
3 years ago
7

I need help!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
krek1111 [17]3 years ago
4 0

Answer:

Step-by-step explanation: I think the answer is a

Mama L [17]3 years ago
3 0
Yeah same I think the answer is a
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1. If 100% = 80, than 75% = ?
Sindrei [870]

Answer:

60

Step-by-step explanation:

100% = 80,

75% = 80/100*75= 60

5 0
2 years ago
Read 2 more answers
Given vectors u = (−1, 2, 3) and v = (3, 4, 2) in R 3 , consider the linear span: Span{u, v} := {αu + βv: α, β ∈ R}. Are the vec
julia-pushkina [17]

Answer:

(2,6,6) \not \in \text{Span}(u,v)

(-9,-2,5)\in \text{Span}(u,v)

Step-by-step explanation:

Let b=(b_1,b_2,b_3) \in \mathbb{R}^3. We have that b\in \text{Span}\{u,v\} if and only if we can find scalars \alpha,\beta \in \mathbb{R} such that \alpha u + \beta v = b. This can be translated to the following equations:

1. -\alpha + 3 \beta = b_1

2.2\alpha+4 \beta = b_2

3. 3 \alpha +2 \beta = b_3

Which is a system of 3 equations a 2 variables. We can take two of this equations, find the solutions for \alpha,\beta and check if the third equationd is fulfilled.

Case (2,6,6)

Using equations 1 and 2 we get

-\alpha + 3 \beta = 2

2\alpha+4 \beta = 6

whose unique solutions are \alpha =1 = \beta, but note that for this values, the third equation doesn't hold (3+2 = 5 \neq 6). So this vector is not in the generated space of u and v.

Case (-9,-2,5)

Using equations 1 and 2 we get

-\alpha + 3 \beta = -9

2\alpha+4 \beta = -2

whose unique solutions are \alpha=3, \beta=-2. Note that in this case, the third equation holds, since 3(3)+2(-2)=5. So this vector is in the generated space of u and v.

4 0
2 years ago
What is the slope of (-3,1) and (1,-2)?<br><br> A. -4/3<br> B. 4/3<br> C. 3/4<br> D. -3/4
Bess [88]

Answer:

Step-by-step explanation:

(-3,1) and (1,-2)

Slope is m= - 3/4

3 0
2 years ago
Read 2 more answers
Given two points on a line, write the equation of the line in slope intercept form. The points are (-4,10), (6,5). Please show a
Aleonysh [2.5K]
The slope is 1/2.
The y-intercept is 8.

Here is the equation:

y=1/2x+8

I hope this helps c:
6 0
3 years ago
Can someone just help me with number 1 and 2
natta225 [31]

Answer:

dummy

Step-by-step explanation:

you are stupid

8 0
3 years ago
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