12/08/20

twice the sum of x and five is 30

twice the sum of x and five is 30

12/07/20

two variables problems

An investor deposited ​$650 into two accounts. The first account earns 4.7​% annual simple interest. The second account earns 4.8 ​% annual simple interest. If the accounts end up earning the... more

You can afford monthly deposits of $270 into an account that pays 3.9% compounded monthly. How long will it be until you have $6,400 to buy a​ boat?

You can afford monthly deposits of $270 into an account that pays 3.9% compounded monthly. How long will it be until you have $6,400 to buy a​ boat?Type the number of​ months: _______​(Round to... more

12/07/20

On a college of 5000 students, the spread of flu virus through the student is modeled by P(t)=5000/(1+4999e^[−0.8t]), where P is the number of students infected after t days.

Questions: (a) Will all students on the campus be infected with the flu? (b) After how many days is the virus spreading the fastest?

12/07/20

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.09 cm thick to a hemispherical dome with a diameter of 80 meters. cubic centimeters

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.09 cm thick to a hemispherical dome with a diameter of 80 meters.   cubic centimeters

12/07/20

A cube of volume 1000 units3 is dilated by a scale factor of 1/2. What is the volume of the image? (Hint: Determine the side length of the pre-image first.)

Possible answers below:10 units3 125 units3500 units38000 units3

12/07/20

Hi can you pls help :o

Write the slope-intercept form of the equation of the line parallel to the graph of y = -2x + 5 that passes through (0, 1).

12/07/20

trigonometry solving triangles

Consider a triangle which has side lengths a, b, and c, and angles , , and , with  opposite the side of length a, and so on.If , , and , what is b?(I got for the answer but just checking!)

12/07/20

Trigonometry angle of elevation

You go to the Leaning Tower of Pisa and you bring a protractor. With the protractor, you measure that the Tower is leaning at an angle of . You then walk away from the tower feet, so that the tower... more

12/07/20

A freight train left Washington and traveled south.

A freight train left Washington and traveled south. A diesel train left six hours later traveling at 85 km/h in an effort to catch up to the freight train. After traveling for 11 hours the diesel... more

12/06/20

find parabola features without a graph

A parabola can be drawn given a focus of(−8,−8) and a directrix of y=2. What can be said about the parabola?what is the vertex and p value

12/06/20

A plane traveled 400 miles to London and back.

A plane traveled 400 miles to London and back. The trip there was with the wind. It took 4 hours. The trip back was into the wind. The trip back took 5 hours. Find the speed of the plane in still... more

12/06/20

A plane traveled 400 miles to London and back.

A plane traveled 400 miles to London and back. The trip there was with the wind. It took 4 hours. The trip back was into the wind. The trip back took 5 hours. Find the speed of the plane in still... more

12/06/20

Trigonometry solving triangles

Consider a triangle which has side lengths a, b, and c, and angles , , and , with  opposite the side of length a, and so on. If , ,, and , what is b?

12/06/20

Find the area of the region bounded by the graphs of y = x, y = -x + 8, and y = 0.

Find the area of the region bounded by the graphs of y = x, y = -x + 8, and y = 0 A 32 B 8 C 16 D None of these

12/06/20

Math ratio problem help

A patio is 7 yards by 10.5 yards. You want to place an outdoor floor covering on the surface. The covering is sold for $15.99 per whole square meter. How much will it cost to cover the patio??

12/05/20

choose all true statements about the zeros of:

f(x)=x4+7x3-12x2+40x-15 f(x) has 3 or 1 positive real zeros 1,3, 5, 15 are the possible rational zeros f(x) has 4,2 or 0 real zeros f(x) has 2 or 0 negative real zeros f(x) has 4 total zeros, real... more

12/05/20

I can't figure out how to do this problem help me please

Rewrite the expression in terms of the first power of the cosine. Use a graphing utility to graph both expressions to verify that both forms are the same.9 cos2(2x)

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