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hram777 [196]
3 years ago
12

Which function is shown on the graph?

Mathematics
1 answer:
monitta3 years ago
3 0

Answer:

y = (1/2) cos (x)

Step-by-step explanation:

It has the same period as cos x but only goes half as high and half as low. Normalyy, cos(x) goes up to 1 and down to -1.

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Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $
nikklg [1K]

The system of linear equations represents the situation is;

x + y = 125

x + y = 1255x + 8y = 775

<h3>Simultaneous equation</h3>

Simultaneous equation is an equation in two unknown values are being solved for at the same time.

let

  • number of quick washes = x
  • number of premium washes = y

x + y = 125

5x + 8y = 775

From equation (1)

x = 125 - y

5x + 8y = 775

5(125 - y) + 8y = 775

625 - 5y + 8y = 775

- 5y + 8y = 775 - 625

3y = 150

y = 150/3

y = 50

  • Substitute y = 50 into

x + y = 125

x + 50 = 125

x = 125 - 50

x = 75

Therefore, the number of quick washes and premium washes Monica’s school band had is 75 and 50 respectively.

Learn more about simultaneous equation:

brainly.com/question/16863577

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3 0
1 year ago
Work out the value of angle x
Alexus [3.1K]

well, it's isosceles so use base angles theorem

the top angle is also x

90 + 2x = 180

subtract 90 from both sides

2x = 90

divide both sides by 2

x = 45 degrees

8 0
3 years ago
Read 2 more answers
Evaluate ab for a = 11 and b = 4. <br><br> a.15 <br> b.44 <br> c.114 <br> d.40
skad [1K]

ab = (11)(4) \\ ab = 44

Answer is B. 44

Hope this helps. - M
7 0
3 years ago
Read 2 more answers
A warehouse distributor of carpet faces a normally distributed demand for its carpet. The average demand for carpet from the sto
Snezhnost [94]

Answer with Step-by-step explanation:

Since the demand is normally distributed the required probability can be found from the area under the normal distribution curve as

Part a)

Given mean = 4500 yards per month

Standard deviation = 900 yards

Thus area under the curve corresponding to 6000 yards is found from the standard variate factor Z as

Z=\frac{X-\bar{X}}{\sigma }\\\\Z=\frac{6000-4500}{900}=1.67

Area for Z = 1.67 = 95.22%

Thus the probability that the demand will be met is 0.9522 hence the probability that the demand will not be met is P(E)=1-0.9522=0.0478

Part b)

The reuired answer is area between 5000 and 7000 yards in the normal distribution curve thus we have

Z_1=\frac{5000-4500}{900}=0.56.

Z_2=\frac{7000-4500}{900}=2.78

The area between these 2 values is 49.73% hence the reuired probability is 0.4973.

Part c)

For 97% satisfaction of demand the Z factor corresponding to 97% of area is found to be 1.88

thus we can write

1.88=\frac{X-4500}{900}\\\\X=4500+1.88\times 1.88=6193

4 0
3 years ago
What is 3 times the sum of a and b? <br><br> This needs to be written as an algebraic expression!
FinnZ [79.3K]

3*a*b is the answer to this equation


5 0
3 years ago
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