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Likurg_2 [28]
3 years ago
7

What is the value of R? 3r–8=7+8r

Mathematics
1 answer:
stellarik [79]3 years ago
6 0
The answer to r is going to be the lucky number 5
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Ok I NEED help on 3 pls
KatRina [158]

total, t = 15/16

red beans, r = 3/16

pinto beans, p = 5/16

black beans, b = t -(p+r) = 7/16

6 0
3 years ago
A group of finance managers at a car dealership estimates thatt 23% of all cars purchased last year were leases.If a sample of 8
vesna_86 [32]

Answer:

p = 0.52392

Step-by-step explanation:

Here we have

p = 23% = 0.23

\hat p = 208/800 = 0.26

n = 800

q = 1-p = 0.77

α = 5% = 0.05

Here we have

Z test given by

z=\frac{\hat{p}-p}{\sqrt{\frac{pq}{n}}}

From which we have

From the Cpdf we have Probability = 0.0219, z = 2.016

Therefore from the z score = 0.0683, p = 0.52392 from z table.

5 0
3 years ago
PLZ HELP ASAP DIVIDE LINE SEGMENTS
Yuri [45]
A (4,8)  and   b (7,2)   and   let  c (x,y)

A , B and C are col-linear ⇒⇒⇒ ∴ slope of AB = slope of BC
slope of AB = (2-8)/(7-4) = -2
slope of BC = (y-2)/(x-7)
∴ (y-2)/(x-7) = -2
∴ (y-2) = -2 (x-7)    ⇒⇒⇒ equation (1)

<span>The distance between two points (x₁,y₁),(x₂,y₂) = d
d = \sqrt{ (x2-x1)^{2} + (y2-y1)^{2} }</span>


The ratio of AB : BC = 3:2
AB/BC = 3/2
∴ 2 AB = 3 BC
2 * \sqrt{ (7-4)^{2} + (2-8)^{2} } = <span>3* \sqrt{ (x-7)^{2} +(y-2)^{2} }
eliminating the roots by squaring the two side and simplifying the equation
∴ 4 * 45 = (x-7)² + (y-2)²  ⇒⇒⇒ equation (2)
substitute by (y-2) from equation (1) at </span><span>equation (2)
4 * 45 = 5 (x-7)²
solve for x
∴ x = 9  or  x = 5
∴ y = -2 or  y = 6

The point will be (9,-2)  or   (5,6)
the point (5,6) will be rejected because it is between A and B

So, the point C = (9,-2)

See the attached figure for more explanations
</span>


5 0
2 years ago
How could a compass be used to determine if two segments are the same length?
Vesnalui [34]

Answer:

answer C.

Step-by-step explanation:

it has the most logical explanation, frankly I'm not the best with circles, but I'm decently sure I'm right

8 0
2 years ago
1. Solve x squared + x - 6 by Factoring
Alex

Answer:

x= -3 and x= 2

E. none of the above

x²+x-6=0

x²+3x-2x-6=0

x(x+3)-2(x+3)= 0

(x-2)(x+3)=0

x= -3 and x= 2

5 0
3 years ago
Read 2 more answers
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