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swat32
3 years ago
6

Find the value of "a" if you knew the perimeter was 47 meters long. Here is the experssion 7a-2

Mathematics
1 answer:
Aneli [31]3 years ago
8 0
That isn’t right I don’t think, if a was 47 then it would be wayyyy bigger of a number. You are finding how 7a-2 is 47. First add 2 to both sides making it 7a=49
7 times what is 49?
That is a
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ANSWER QUICK AND I WILL MAKE YOU BRAINLIEST
alekssr [168]

Answer:

The width of the window should be 7.6\ ft and the height of the window should be 3.8\ ft

Step-by-step explanation:

we know that

The circumference of a semicircle (window) is equal to

C=\pi r

we have that

C=12\ ft

\pi=3.14

substitute and solve for r

12=(3.14)r

r=12/3.14=3.8\ ft

so

the width of the window is equal to the diameter of the semicircle

so

The width of the window should be 3.8*2=7.6\ ft and the height of the window should be 3.8\ ft

4 0
3 years ago
Swimming pool pete's pools installs rectangular pools that are all 10 feet wide. the length can very from 10 feet to 30 feet. th
AleksandrR [38]
76=2w+2l
76=2(10)+2l
56=2l
l=28 feet
8 0
3 years ago
Write the equation in slope-intercept form of a line with slope -2 that passes through the point (1.-7)
tiny-mole [99]

Answer:

y=-2x-5

Step-by-step explanation:

y-y1=m(x-x1)

y-(-7)=-2(x-1)

y+7=-2x+2

y=-2x+2-7

y=-2x-5

6 0
3 years ago
Are the two right triangles trs and wuv congruent? If so name the congruence postulate that applies
Nataly_w [17]
<span>Two figures are said to be congruent when they have the same shape and size or if one object is a mirror image of the other object.<span> The right triangles trs and wuv are congruent when they have equal lengths of the sides and having equal sides, angles should as well be equal with the two triangles.</span></span>
8 0
3 years ago
This is confusing. can someone please help
kolezko [41]
For finding the measure of C you should know a line is 180° so 124°+C = 180 
now you can say: 
C = 180°- 124° = 56 ° 
so the answer is 56° :)))
i hope this is helpful 
have a nice day 
8 0
3 years ago
Read 2 more answers
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