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antiseptic1488 [7]
3 years ago
8

Help!

Mathematics
2 answers:
Ostrovityanka [42]3 years ago
8 0

Answer:

a

Step-by-step explanation: I looked it up

saw5 [17]3 years ago
3 0

Answer:

( a )   The system of equations:

2 r + b = 8.40

3 r + b = 9.35

( c )  Each item costs:

b = $6.50,  r = $0.95

Step-by-step explanation:

Is it right? Tell me if it isn't.

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Which fractions are equivalent? Explain how you know.
podryga [215]

For this case we have the following fractions:

A. \frac {20} {5} = 4

B .- \frac {20} {5} = - 4

C. \frac {20} {- 5} = - 4

D. \frac {-20} {5} = - 4

E .- \frac {20} {5} = - 4

As noted, the last four fractions result in -4. So, they are equivalent fractions.

Answer:

Option B, C, D, E. They are equivalent fractions.

8 0
3 years ago
A beach has two floating docks. One is 650 meters east of the lifeguard stand. The other is 60° southeast and 750 meters from th
vovangra [49]

Answer:

705 meters

Step-by-step explanation:

cos~60=\frac{650^2+750^2-d^2}{2 \times 650  \times 750} \\2 \times 650 \times 750 \times \frac{1}{2}=50^2(13^2+15^2)-d^2 \\487500=2500(169+225)-d^2\\487500=2500(394)-d^2\\487500=985000-d^2\\487500-985000=-d^2\\d^2=497500\\d=\sqrt{497500}\\or~d\approx705.337 \approx 705~meters

7 0
2 years ago
Determine the x intercepts of the piecewise function in the image that I sent.
Amanda [17]

To find the x intercept of the function, we would find g(x) = 0

To do this, we would set each expression in the piecewise function to zero and solve for x. We have

For

x/3 + 2 = 0

let us multiply both sides of the equation by 3. We have

x/3 * 3 + 2 * 3 = 0 * 3

x + 6 = 0

x = - 6

- 6 is less than - 1

- 6 < - 1

It satisfies the inequality. Thus, x = - 6 is in the domain

For

4x - 2 = 0

adding 2 to both sides of the equation, we have

4x - 2 + 2 = 0 + 2

4x = 2

Dividing both sides of the equation by 4, we have

4x/4 = 2/4

x = 1/2

x = 1/2 is less than 1. It is not in the domain of this equation. Thus, there is no x interscept at x = 1/2

Therefore, the x intercept of the piecewise function is (- 6, 0)

3 0
1 year ago
Write each expression in exponential form and find its value 1/6*1/6*1/6*1/6
olga55 [171]

Answer:

1/6^4.

Step-by-step explanation:

Multiply denominators.

6*6*6*6 = 1,296

Your answers are 1/6^4 and 1/1296.

3 0
3 years ago
You have a coupon for a restaurant that is 25% off. You save $3 on a meal. What was the original cost of the meal?
UkoKoshka [18]
The origonal cost of the meal is $12 dollars
8 0
2 years ago
Read 2 more answers
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