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3 years ago

9

Geometry software

1 answer:

ra1l [238]3 years ago

3 0

Help need! Like right away sry this not the answer

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An online store sells speakers the higher prices sells 170 and the lower priced 90last week the store sold 4 times as many lower

maksim [4K]

Answer:

The number of lower-priced speaker sold was 28

Step-by-step explanation:

<u><em>The complete question is</em></u>

An online store sells two types of speaker. The higher-priced speaker sells for $170 and the lower-priced speaker sells for $90. Last week the store sold four times as many lower-priced speaker as higher-priced speaker. Combined sales totaled $3,710. How many lower-priced speaker did it sell?

Let

x ----> the number of higher-priced speaker sold

y ----> the number of lower-priced speaker sold

we know that

Last week the store sold four times as many lower-priced speaker as higher-priced speaker

so

$y=4x$ ----> equation A

Combined sales totaled $3,710

so

$170x+90y=3,710$ ----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

Using a graphing tool

The solution is the point (7,28)

see the attached figure

therefore

The number of lower-priced speaker sold was 28 and the number of higher-priced speaker sold was 7

7 0

3 years ago

Fish swimming 5 feet below sea level. It swims 6 feet lower. What integer represents its position in relation to sea level?

UkoKoshka [18]

Answer: -11

Step-by-step explanation:

five below 0 is -5

6 below -5 is -11

3 0

4 years ago

If a and b are integers such that a2 − b2 = 100, what is the greatest possible value of a?

tatyana61 [14]

Answer:

26

Step-by-step explanation:

Question says that 'a' and 'b' are integers that implies we cannot have 'a' and 'b' in the form of decimals.

Now, lets expand the given equation:

$a^2-b^2=100$

$(a+b)(a-b)=100$

Lets say: $(a+b)=p$ , $(a-b)=q$

Let us consider the factor pairs of 100.

$(1 \times 100), (2 \times 50), (4 \times 25), (5 \times 20), (10 \times 10), (20 \times 5), (25 \times 4), (50 \times 2), (100 \times 1)$

Only factor pair $(2,50)$ gives us the integer values of 'a' and 'b'.

$a+b=50$ ....equation (1)

$a-b=2$ ........ equation (2)

adding equation 1 and 2, we get:

$2a=52$

$a=\frac{52}{2}=26$

$a-b=2$

Plugging the value of 'a' in the equation 2

$26-b=2$

$b=24$

So the greatest possible value of 'a' is 26.

5 0

4 years ago

ASAP !!!!! In the diagram, BE AC is perpendicular to AC.AG=6, DG=3, AG = 6, DG = 3, and CD = 10. If BG = 8 and EG = 4, calculate

almond37 [142]

MMMMMMMM IT ---> 114 <--
^^^

6 0

4 years ago

Show that (a + b) (a + b)²=a³+ 3a²b+3ab²+b³

mash [69]

Step-by-step explanation:

(a+b)(a+b)² = (a+b)(a²+2ab+b²)

=a(a²+2ab+b²) + b(a²+2ab+b²)

= a³+2a²b+ab² + a²b+2ab²+b³

=a³+2a²b+ a²b+ab² +2ab²+b³

=a³+3a²b+3ab²+b³

7 0

3 years ago