02/01/21

For a particular D-cell alkaline battery, the mean life is 19 hours. The useful life of the battery follows a normal distribution with a standard deviation of 1.2 hours.
As part of its quality assurance program, the Exide Battery Company conductstests on battery life. For a particular D-cell alkaline battery, the mean life is 19 hours.The useful life of the battery... more
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02/01/21

Assume that 0≤𝜃≤𝜋/2. Find the values of sin(𝜃) and tan(𝜃) if cos(𝜃)=7/25. (Use symbolic notation and fractions where needed)
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01/27/21

Proof A. B. C. and D.
3. Given: P(1, 2), Q(­3, ­1) and R(1, ­4).a. Prove that ΔPQR is not equilateral.b. Find the midpoints of QP and QR and label them M and N respectively.c. Find the areas of ΔPQR and ΔMQN.d. What is... more
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01/27/21

A cylindrical storage tank has a depth of 9 ft and a radius measuring 3 ft.
A cylindrical storage tank has a depth of 9 ft and a radius measuring 3 ft. If each cubic foot can hold 7.5 gallons of gasoline, what is the total storage capacity of the tank measured in gallons?... more
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01/27/21

MATH HOMEWORK PLEASE HELP ASAP
For the right circular cylinder, r = 1.75 in. and h = 4.76 in.Find the approximate volume (in cubic inches) of the cylinder. (Use your calculator value of 𝜋. Round your answer to two decimal places.) more
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01/27/21

can you plz help with this

Which of the following transformations always preserve the orientation of a figure?  a. Translations and Reflections b. Translations c. Reflections
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01/26/21

What's the probability that at least 4 out of the next 20 customers will buy cake pops? (Hint: remember to show the setup!)
Lindsay knows 48% of people who walk into her dessert show will buy cake pops.
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01/26/21

What’s the probability Lindsay won’t sell a cake pop until the 9th customer? Round your answer to 4 decimal places.
Lindsay knows 48% of people who walk into her dessert show will buy cake pops.
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01/26/21

The average length of a hospital stay in the US is 9 days with a standard deviation of 3 days. Assume the lengths of stays follow a Normal model.
a.What is the probability that a randomly selected patient’s stay is less than 10 days?b.What is the probability that the average length of stay for a random sample of 100 patients is less than 10... more
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01/26/21

Quadratic equations

The bottom of a ladder must be placed 18 feet from a wall. The ladder is 24 feet long. How far above the ground does the ladder touch the wall?
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01/26/21

Quadratic equations

The hypotenuse of a right angled triangle is 35 cm. The difference between its other two sides is 7 cm. Find the length of the sides.
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01/26/21

One card is selected at random from a standard deck of 52 playing cards. Use a formula to find the probability of the union of the two events.
The card is a face card or a black card.
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01/26/21

probability in math
There are 34 employees in a certain firm. We know that of 24 these employees are​ male, 4 of these males are​ secretaries, and 9 secretaries are employed by the firm. What is the probability that... more
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01/25/21

Solve the equation. Round your answer to the nearest hundredth. 2.5(14+3t)=-12
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01/25/21

please help me!!!
sandra wrote the sequence 3,6,11,18,27,...what is the 12th term of this sequence?
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01/25/21

Quadratic equations

The length of a rectangle exceeds its width by 5 inches. Find the length of the rectangle if its area is 126 square inches.
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01/24/21

Percent mixture problem using a system of linear equations.

The Royal Fruit Company produces two types of fruit drinks. The first type is 70% pure fruit juice, and the second type is 95% pure fruit juice. The company is attempting to produce a fruit drink... more
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01/23/21

Rectangular base
For a given box, the height measures 6 m. If the length of the rectangular base is 2 m greater than the width of the base and the lateral area L is 96 m2, find the dimensions (in meters) of the box.
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01/23/21

statistics help!
Your student email account requires you to choose a password of 4 letters followed by one of the digits 0-9. The password can consist of upper case letters (26) or lower case letters (26). How many... more
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01/23/21

Solve the system of linear equations.
3x - 6y = -9-5x + 10y = 10
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01/23/21

Solve for E: -2-4E=-9A If possible, write your solution as two terms
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01/23/21

what is The length of the remaining piece of beam
A wooden beam is (7y2+5y+1) meters long. If a piece of length (y2−12) meters is cut​ off, express the length of the remaining piece of beam as a polynomial in y.
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01/23/21

Pg 282 problem 7
You spend $20 total on tubes of paint and disposable brushes for an art project. Tubes of paint cost $4.00 each and paintbrushes cost $0.50 each. You purchase twice as many brushes as tubes of... more
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01/22/21

Two angles form a linear pair. The measure of winning with six more than twice the measure of the other angle. Find the measure of each angle.
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01/22/21

Points A, B, and C are collinear. Point B is the midpoint between A and C. Solve for the value of x if AB = 7x - 1 and BC = 6x - 8
I cant figure out how to do this and i need it right now
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