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yKpoI14uk [10]
3 years ago
6

What is the measure of AB

Mathematics
2 answers:
Studentka2010 [4]3 years ago
5 0
The measure of AB is 9
sp2606 [1]3 years ago
5 0

Answer:

<h2>9</h2>

Step-by-step explanation:

it is an isosceles triangle, so angle B is equal to angle C, and side AB = AC

if AB = AC, AB = 9


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Work out the length of AB.
4vir4ik [10]
\frac{AB}{BC}   =   \frac{EB}{DC}

\frac{AB}{BC}   =   \frac{1.75 m}{7 m}

let AB = E

⇒                 (AB) (7 m) = (1.75 m) ( BC + AB)
                    (AB) (7 m) = (1.75 m) (1.5 m + AB)
                                      =  2.625 m²  +  (1.75 m ) (AB)
      (AB) (7 m - 1.75 m) = 2.625 m² 
                            ∴  AB =  2.625 m²  ÷  (5.25 m)
                           
<span>                   ⇒ the length of AB is 0.5 m</span>
7 0
3 years ago
6/12 mas 2/3 mas 1/6
kozerog [31]

Reduce the fraction 6/12 to its lowest expression by extracting and canceling 6.

\bf{ \dfrac{1}{2}+\dfrac{2}{3}+\dfrac{1}{6}   }

Convert 1/2 and 2/3 to fractions with denominator 6.

\bf{\dfrac{1\times3}{2\times3}+\dfrac{2\times2}{3\times2}+\dfrac{1}{6} \ \ \to \ \ \ Multiply  }

\bf{ \dfrac{3}{6}+\dfrac{4}{6}+\dfrac{1}{6}   }

Since 3/6, 4/6, and 1/6 have the same denominator, add their numerators to add them together.

\bf{\dfrac{3+4+1}{6} \ \ \to \ \ \ Add  }

Add 3 plus 4 plus 1.

\bf{\dfrac{8}{6}  }

Reduce the fraction 6/8 to its lowest expression by extracting and canceling 2.

\bf{\dfrac{4}{3} \ \ \to \ \ \ Answer  }

\red{\boxed{\green{\boxed{\boldsymbol{\sf{\purple{Pisces04}}}}}}}

3 0
2 years ago
Evaluate the function when x = -5.<br> f(x) = 2x + 7<br> answer:
Ket [755]

Answer:

Step-by-step explanation:

Replace x with -5

2(-5)+7

-10+7

-3

3 0
3 years ago
Read 2 more answers
SOMEONE PLEASEEEE ANSWER!!! :)))
Mars2501 [29]

Answer:

4,2 and -2,3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Please help!! i need 15 &amp; 17!
Ludmilka [50]

Answer:

15. Answer: length = 15 ft; width = 3 ft

16. Answer: base = 14 cm; height = 5 cm

17. Answer: x² - 5x - 24 = 0

Step-by-step explanation:

15.

area of rectangle = length * width

length = x - 2

width = x - 14

area = (x - 2) (x - 14)

We are shown the area to be 45 ft².

We set the expression of the area equal to the given area and solve the quadratic equation for x.

(x - 2)(x - 14) = 45

x² - 14x - 2x + 28 - 45 = 0

x² - 16x - 17 = 0

(x - 17)(x + 1) = 0

x - 17 = 0  or  x + 1 = 0

x = 17  or x = -1

We discard the negative answer, x = -1, since it would give negative length and width.

x = 17

length = x - 2 = 17 - 2 = 15

width = x - 14 = 17 - 14 = 3

Answer: length = 15 ft; width = 3 ft

16.

area = ½bh

area = ½(x - 5)(x - 14)

area = 35

½(x - 5)(x - 14) = 35

(x - 5)(x - 14) = 70

x² - 14x - 5x + 70 = 70

x² - 19x = 0

x(x - 19) = 0

x = 0  or  x - 19 = 0

We discard x = 0 since it would give negative dimensions.

x = 19

base = x - 5 = 19 - 5 = 14

height = x - 14 = 19 - 14 = 5

base = 14

height = 5

Answer: base = 14 cm; height = 5 cm

17.

A polynomial with solutions x = a and x = b can be found by multiplying (x - a) by (x - b). Here, the solutions are x = -3 and x = 8.

[x - (-3)](x - 8) = (x + 3)(x - 8) = x² - 8x + 3x - 24 = x² - 5x - 24

Answer: x² - 5x - 24 = 0

5 0
4 years ago
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