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bearhunter [10]
4 years ago
10

Y=3x-5\6x+3y=15 solve for x hurry

Mathematics
1 answer:
Lady bird [3.3K]4 years ago
3 0
Answer: x= 2

how i solved: (in photo)

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Karen earns $62.25 for working 9 hours. if the amount she earns varies with the number of hours she works how much will she earn
nata0808 [166]

Answer:

$103.75

Step-by-step explanation:

we know that

Karen earns $62.25 for working 9 hour

so

using proportion

Find out  how much she will  earn for working 15 hours

\frac{62.25}{9}\ \frac{\$}{h}=\frac{x}{15}\ \frac{\$}{h}\\\\x=62.25(15)/9\\\\x=\$103.75

6 0
3 years ago
The coordinate grid shows three points P Q and R. the distance between Q and R is ____ units
Serhud [2]

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6

Step-by-step explanation:

you count how many units is in between the points

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4 0
3 years ago
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Differentiating Exponential functions In Exercise,find the derivative of the function. See Example 2 and 3.
Citrus2011 [14]

Answer:

f'(x)=-5ae^{ax}=a f(x), where a be a constant.

Step-by-step explanation:

Note: The given functions is a constant function because variable term is missing.

Consider the given function is

f(x)=-5e^{ax}

where a be a constant.

We need to find the derivative of the function.

Differentiate with respect to x.

f'(x)=\dfrac{d}{dx}(-5e^{ax})

f'(x)=-5\dfrac{d}{dx}(e^{ax})

f'(x)=-5e^{ax}\dfrac{d}{dx}(ax)            [\because \dfrac{d}{dx}(e^x)=e^x]

f'(x)=-5ae^{ax}

f'(x)=a(-5e^{ax})

f'(x)=a f(x)

Therefore, the derivative of the function is f'(x)=-5ae^{ax}=a f(x).

7 0
3 years ago
Equipment running at 100 per cent capacity sorts 13,000 packages each shift.
kolezko [41]

The machine will sort 11050 packages when it is operating at 85% capacity.

To solve this question, we have to find the rate at which the machine is operating at 85% capacity.

Data;

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  • x at 85%

<h3>Rate</h3>

This is used to compare two values with respect to one another mostly under similar conditions.

13,000 = 100\\&#10;x = 85

cross multiply both sides and solve for x

x = \frac{13000*85}{100} \\&#10;x = 11050

The machine will sort 11050 packages when it is operating at 85%

Learn more on rates here;

brainly.com/question/14315509

5 0
2 years ago
Sally eats lunch at a restaurant and her bill is $12. She would like to leave a 15% tip for the waiter.
Andreas93 [3]

Answer:

$ 13.80

Step-by-step explanation:

6 0
3 years ago
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