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vova2212 [387]
3 years ago
11

\sqrt{3} } " alt=" \frac{7}{5 - \sqrt{3} } " align="absmiddle" class="latex-formula">
write the expression in simplified radical form
Mathematics
1 answer:
ratelena [41]3 years ago
4 0
Rationalize denominator in order to vanish radical term from denominator,

\frac{7(5+ \sqrt{3})}{(5- \sqrt{3})(5+ \sqrt{3})} =  \frac{7(5+ \sqrt{3}) }{25-3} =  \frac{35+7 \sqrt{3} }{22}
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What is perpendicular to y=-1/2x+11
ratelena [41]
You have to find the reciprocal of the gradient - 1/2
And to do that just flip the sign and fraction:
-1/2
1/2
2/1

So the answer is,
Y = 2x + 11
3 0
3 years ago
A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidence interval for the proportion of homeles
MA_775_DIABLO [31]

Answer:

[0.184, 0.266]

Step-by-step explanation:

Given:

Number of survey n =280

Number of veterans = 63

Confidence interval = 90%

Computation:

Probability of veterans = 63/280

Probability of veterans =0.225

a=0.1

Z(0.05) = 1.645 (from distribution table)

Confidence interval = 90%

So,

p ± Z*√[p(1-p)/n]

0.225 ± 1.645√(0.225(1-0.225)/280)

[0.184, 0.266]

4 0
3 years ago
Find where the two lines intersect.Please help
ElenaW [278]
7. (4,5) 8. (5,-3) hope that helps
8 0
2 years ago
HELP PLEASE!! WILL GIVE BRAINLIEST!!!
beks73 [17]

Answer:

Slope = 2 Y-Intercept = (0, 3)

Step-by-step explanation:

Slope : \frac{Rise}{Run}  which is \frac{y2 - y1}{x2 - x1} from two points: point1 (x1 , y1) and point2 (x2, y2).

For the purpose of getting the slope I will be using point (0, 3) as point 1

and point (-3, -3) as point 2.

If you plug in 0 as x1, 3 as y2, -3 for x2, and -3 for y2:

\frac{-3 - 3}{-3 - 0} = \frac{-6}{-3} = 2

Y-Intercept: The y intercept is the point where the line is touching the y axis. Which in this graph, there is only point (0,3).

7 0
3 years ago
Mariyah bought 5 yards of fabric and a spool of thread for $22.75. If the spool of thread cost
Tems11 [23]

Answer:

$4.25

Step-by-step explanation:

Subtract the cost of the spool of thread from the total price:

22.75 - 1.50

= 21.25

Then, divide this by 5 to find the cost of fabric per yard:

= 4.25

So, the cost of the fabric per yard is $4.25

7 0
2 years ago
Read 2 more answers
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