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3 years ago

30 Points DUE TOMORROW

Mathematics

1 answer:

Katarina [22]3 years ago

6 0

Answer:

An angle is by the right angle paq is to the left

Step-by-step explanation:

hope this helped

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the frame of a picture is 28 cm by 32 cm outside and is of uniform width.What is the width of the frame if 192 cm2 of the pictur

natita [175]

Answer:

The width of the frame is equal to $8\ cm$

Step-by-step explanation:

Let

x-------> the width of the frame picture

we know that

$(28-2x)(32-2x)=192$

$896-56x-64x+4x^{2} =192$

$4x^{2}-120x+704=0$

Simplify

$x^{2}-30x+176=0$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}-30x+176=0$

$a=1\\b=-30\\c=176$

substitute in the formula

$x=\frac{30(+/-)\sqrt{(-30)^{2}-4(1)(176)}} {2(1)}$

$x=\frac{30(+/-)\sqrt{196}} {2}$

$x=\frac{30(+/-)14} {2}$

$x=\frac{30+14} {2}=22\ cm$ ----> this solution is not logic

$x=\frac{30-14} {2}=8\ cm$

The width of the frame is equal to $8\ cm$

8 0

3 years ago

The side of the parallelogram in the figure above are given in cm.

GrogVix [38]

solution

or, 2 x + y = 5 y - 8 being opposite side of

parallelogram

or , 2x =5 y - y - 8

or, 2x = 4 y - 8

or, x = 4y - 8/2

or,. x = 2y- 4

therefore, 2x + y is equal to 5 y - 8 Being the opposite side of a parallelogram

now,

3y + 2 x is equal to 4x - 3 being opposite side of a parallelogram

or, 3y + 2 x-4x = -3

or,. 3y -2x = -3

5 0

3 years ago

HELP!!!!!! An Instagram photo is measured ″ 4″ by ″ 4″. A poster enlargement is being printed with a scale factor of 8.5. What i

Anika [276]

The given measurement of the Instagram photo is "4" by "4". And a poster enlargement is being printed with a scale factor of 8.5 .

So on using the scale factor of 8.5 , lengths of new sides are "8.5 *4" by "8.5 *4"

= " 34" by "34" .

So the new lengths of the enlarged pictures are of dimension "34" by "34" .

7 0

3 years ago

Read 2 more answers

Help Thrhfjfhfhhfhfhfjf

12345 [234]

Answer: 5

Step-by-step explanation:

a^2 + b^2 = c^2

12^2 + x^2 = 13^2

144 + x^2 = 169

x^2 = 25

square root both sides

x = 5

to check, do 12^2 + 5^2 =169

sqrt of 169 is 13

hope this helps

4 0

3 years ago

Solve for x: x - 10 = -12 A. 2 B. -2 C. 22 D. -22

Sindrei [870]

Add 10 to both sides. X is 2. A.

7 0

3 years ago

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