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ra1l [238]
4 years ago
15

ome pleated draperies must be twice as wide as the window they cover. How many square yards of material are needed to cover this

kind of window 2 ft. wide and 3 ft. long? 12 4 1
Mathematics
1 answer:
Burka [1]4 years ago
6 0
It would be 12 bc you need to find the area of the curtain--to double the width of the curtain you multiply 2x2, which equals 4.  then to get the area you multiply by the length, 4x3, which equals 12.
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A triangle has interior angles equal to 51 and 42 degrees.Find the interior angle x
Taya2010 [7]

Answer:

Angle x would be 87 degrees.

Step-by-step explanation:

Angles inside of a triangle add up to 180 degrees. So 51+42=93 and if you subtract 93 from 180, you get 87.

3 0
3 years ago
Add _____ to each side x2 – 8x = 9 to complete the square.
zhuklara [117]

Answer:

The correct answer is 25

Step-by-step explanation:

It is given a quadratic equation,

x² – 8x = 9

<u>To find the number to be added</u>

The given equation be  x² – 8x = 9

here we have to add (b/2)² -  the square of half the coefficient of x,

Here b = -8

(b/2)² = (-8/2)² = -4² = 16

Add both side with 16

x² – 8x + 16  = 9 + 16

(x - 4)² = 25

(x - 4)² = 5²

3 0
3 years ago
Read 2 more answers
HELP ME!!!!!!!!!!!!
Ludmilka [50]
90 degrees
Vote me brainliest!
8 0
3 years ago
Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total
Ulleksa [173]

Answer:

Step-by-step explanation:

c + f = 10 (the coach tickets + first class tickets = 10)...there is 10 people

160c + 1230f = 6950....each coach ticket is 160 and each first class ticket is 1230.....and when added, they equal 6950 (for the airfare)

c + f = 10.....c = 10 - f

160c + 1230f = 6950

sub in 10 - f for c

160(10 - f) + 1230f = 6950

distribute the 160 thru the parenthesis

1600 - 160f + 1230f = 6950

combine like terms

1600 + 1070f = 6950

subtract 1600 from both sides

1070f = 6950 - 1600

1070f = 5350

divide both sides by 1070

f = 5350/1070

f = 5 <===== she bought 5 first class tickets

c + f = 10

we found f to be 5...so sub in 5 for f and find c, the coach tickets

c + 5 = 10

c = 10 - 5

c = 5 .......and she bought 5 coach tickets

check...

160c + 1230f = 6950

160(5) + 1230(5) = 6950

800 + 6150 = 6950

6950 = 6950 (correct)....so it checks out

5 coach and 5 first class

3 0
3 years ago
Puzzle <br>If a + b = 76<br>a - b = 38<br>a / b = ????????????
iogann1982 [59]
+\left\{\begin{array}{ccc}a+b=76\\a-b=38\end{array}\right\\-----------\\.\ \ \ \ \ \ \ 2a=114\ \ \ \ \ |:2\\.\ \ \ \ \ \ \ \ \ \ a=57\\\\57+b=76\\b=76-57\\b=19\\\\\frac{a}{b}=\frac{57}{19}=\fbox{3}
4 0
3 years ago
Read 2 more answers
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