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JulsSmile [24]
3 years ago
11

Number 14 please and thank you

Mathematics
1 answer:
Fed [463]3 years ago
4 0
You can do a notebook a door , a frame or a mirror, mostly anything that has angles
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Solve 1/2 + (- 3/4) =
Crazy boy [7]

Answer:

-0.25 or 1/4

Step-by-step explanation:

Eh just know

5 0
3 years ago
AB=45. If RT=3(x+9), what is the value of x?
Margaret [11]
6 because 45 divides by 3 equals 15 and fifteen minus 9 equals 6, if you plug 6 into the equation it makes sense
7 0
2 years ago
Read 2 more answers
Solve the equations by factoring:<br><br>x^2−3x−40=0<br><br>4x^2−81=0
Alja [10]

Answer:

see explanation

Step-by-step explanation:

Given

x² - 3x - 40 = 0

Consider the factors of the constant term (- 40) which sum to give the coefficient of the x- term (- 3)

The factors are - 8 and + 5, since

- 8 × 5 = - 40 and - 8 + 5 = - 3, thus

(x - 8)(x + 5) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 8 = 0 ⇒ x = 8

x + 5 = 0 ⇒ x = 5

------------------------------------------------------

Given

4x² - 81 = 0 ← this is a difference of squares and factors in general as

a² - b² = (a + b)(a - b), thus

4x² - 81

=(2x)² - 9²

= (2x + 9)(2x - 9) = 0 ← in factored form

Equate each factor to zero and solve for x

2x + 9 = 0 ⇒ 2x = - 9 ⇒ x = - \frac{9}{2}

2x - 9 = 0 ⇒ 2x = 9 ⇒ x = \frac{9}{2}

8 0
3 years ago
Read 2 more answers
Solve the proportion 4 : 16 = ? : 32 for the unknown, or in other words, 4 is to 16 as what number is to 32.
stiv31 [10]
In the proportion 4:16 =  x:32. The answer is 8
4 0
3 years ago
A photograph of sides 35cm by 22cm is mounted onto a
trapecia [35]
<h3>Answer:  580 square cm</h3>

===================================================

Work Shown:

A = area of smaller rectangle

A = length*width

A = 35*22

A = 770

B = area of larger rectangle

B = length*width

B = 45*30

B = 1350

C = area of the border only

C = B - A

C = 1350-770

C = 580 square cm

7 0
3 years ago
Read 2 more answers
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