All categories

3 years ago

Alicia sells bracelets b for $5 each, and necklaces n for $10 each. In one day she sells 15

Mathematics

1 answer:

Arada [10]3 years ago

6 0

Answer:

5b+n=100,6+10n=15 that's all

You might be interested in

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

4 years ago

Find the volume of this square based pyramid. 5ft 6 ft [? ]ft

Sav [38]

Answer:

48 ft³

Step-by-step explanation:

To find the height, you can use the slant height and the base.

Using the Pythagorean Theorem and 3 as the triangle's base,

a²+b²=c²

3²+b²=5²

9+b²=25

b²=16

b=4

The height of the pyramid is 4.

Volume formula for the pyramid is $\frac{1}{3} *b*h$

Inserting our measurements:

$\frac{1}{3} *6*6*4=\\2*6*4=\\12*4=\\48$

5 0

4 years ago

The size of a computer monitor is usually measured along the diagonal. An 18-in. rectangular monitor has a height of 9 in. What

stiv31 [10]

You would use the Pythagorem Theory which is a^2 + b^2 = c^2
the diagonal being c and it doesn't matter how you substitute tho other either a or b. the answer is 15.588 or 15.6 inches

7 0

3 years ago

Read 2 more answers

What is the area of the figure? Enter your answer in the box. in2

Dafna1 [17]

110^in2 is what I got

7 0

3 years ago

3.5 × 4 brainliest...

arlik [135]

Answer:

Step-by-step explanation:

7 0

3 years ago