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Stells [14]
2 years ago
8

Help me solve for x ?

Mathematics
2 answers:
Crazy boy [7]2 years ago
7 0
The answer would be x=12

Marianna [84]2 years ago
6 0

Answer:

x = 12

Step-by-step explanation:

(4x - 5)  \degree +(3x + 11) \degree  = 90\degree \\(complementary \:  \angle s)  \\  \\ (4x - 5 + 3x + 11)\degree  = 90\degree  \\  \\  (7x  + 6)\degree  = 90\degree  \\  \\ 7x + 6 = 90 \\  \\ 7x = 90 - 6 \\ 7x = 84 \\  \\ x =  \frac{84}{7}  \\  \\ x = 12

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A postcard has an area of 24 square inches. Two enlargements of the postcard have areas of 54 square inches and 96 square inches
Alex777 [14]

Answer:

original is 4 & 6.

for 54 sq inch= 6 & 9 and for 96 sq inch=8 & 12

Step-by-step explanation:

Given: The length is 1.5 times the width.

so the length is, l = 1.5w ----(a)

lw = 24  =1.5w(w)

lw = 54= 1.5w(w)

lw = 96 =1.5w(w)

Further simplifying it,

1.5w^{2}=24

1.5w^{2}=54

1.5w^{2}=96

so,

w^{2} = \frac{24}{1.5}=16

w^{2}= \frac{54}{1.5} =36

w^{2}= \frac{96}{1.5} =64

taking the square root, we get:

w = 4

w = 6

w = 8

By putting the above values in eq (a), we can find their corresponding lengths:

l = 1.5(4) = 6

l = 1.5(6) = 9

l = 1.5(8) = 12

So a few lengths could be:

(l, w)

(6,4)

(9,6)

(12,8)

5 0
3 years ago
Read 2 more answers
I NEED THE ANSWER TODAY PLZ!!
Paraphin [41]

Answer:

I think the answer is Y>-2

7 0
3 years ago
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How do you use the order of operations to simplify expressions with exponents
yaroslaw [1]
It could be PEMDAS.
That means solve by this order:
1). Parenthesis
2). Exponents
3). Multiplication
4). Division
5). Addition
6). Subtraction

To remember the order they say it like
this " Please Excuse My Dear Aunt Sally "




6 0
3 years ago
Isabella spends $4.87 on paintbrushes and paint. How many of each item does she buy? Explain how you found your answer
Rina8888 [55]

Answer:Answer: Isabella buys 2 paintbrushes and 3 jars of paint.

Step-by-step explanation:

Isabella can buy together 5 paintbrushes ( p ) and jars of paint ( p ) : j + p = 5, She can`t buy 4 items ( because 4 * $0.99 = $3.96 < $4.87 ) and she also can`t buy 6 items ( 6 * $0.95 = $5.70 > $4.87 ). So: p = 5 - j. Another equation is: 0.95 * ( 5 - j ) + 0.99 j = 4.87, 4.75 - 0.95 j + 0.99 j = 4.87; 0.04 j = 0.12; j = 0.12 : 0.04; j = 3, p = 5 - 3 = 2. We can prove it: 0.95 * 2 + 0.99 * 3 = 1.90 + 2.97 = 4.87.

(Hope this helps!!!!)

5 0
3 years ago
Which graph represents y = –2x?
mojhsa [17]

Answer:

i hope it helps

Step-by-step explanation:

4 0
3 years ago
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