05/23/18

05/22/18

#### balance the equation also what type of reaction is this

_Ca(No3)2+_NaOH=__Ca(OH)2+__NaNO3”   __Mg(No3)2+__K3PO4=__Mg3(PO4)2+__KNO3

05/20/18

#### Marisa has taken 5 math tests and scored the following, 83,88,95,83,92. what does she need to score 6th math test in order to have a test average of 90 overall?

so i have almost solved but i am stuck i add them all up so it looks like 83+88+92+95+x=90 all over              6  then i got  441+x     6       but idk what to do now because the correct... more

05/18/18

#### A triangle has an area of 120 sq units. Need to find the base and the height.

120=1/2(3x+9)(x=5)

05/14/18

#### The equation (x^2+y^2)^2=2(x^3+y^3) graphs the bean curve. Approximate the value of y at x=1/2 by using the linear approximation...

The equation (x^2+y^2)^2=2(x^3+y^3) graphs the bean curve. Approximate the value of y at x=1/2 by using the linear approximation to the curve at the point (1,1).   Possible answers... more

05/14/18

#### Let P be the population of some geographical area. If the population of the area changes over time based on...

Let P be the population of some geographical area. If the population of the area changes over time based on the following criteria, which of them signals exponential growth of the... more

05/14/18

#### The graph of x^4=4(x^2-y^2) has how many horizontal tangents?

Possible answers include:   A. 1 B. 2 C. 4 D. 5
Help Asap Please Calculus Math Help

05/14/18

#### Consider the differential equation dy/dx=x^2+4y-1. If y=f(x) is the solution to the differential equation, at what point does f have a relative maximum?

Possible answers include:   A. (3, -2) B. (0, 1/4) C. (-2, -1) D. (-5,-6)

05/10/18

#### Chemistry Question

Calculate the ratio of moles of acid to moles of base to create a 750 mL buffer solution with pH = 4.2 using acetic acid, CH3OOH, and acetate CH3COO. The ka for acetic acid is 1.8 x 10^(-5)

05/10/18

#### Chemistry Question

Consider an aqueous solution of ammonia, NH3, a base. If the resulting pH of this solution is 9.5, then what is the concentration of this ammonia solution? Note that the Ka for ammonium, NH4, is... more
Help Asap Please Maths Word Problem Question

05/07/18

Tuyen walked 2.0 mi due north 5 mi due west 3.0 mi due south, and 1.0 mi due east. How far from starting point?

05/04/18

05/02/18

#### 2cos2x(sin2x) + sin2x = 0?

I need help solving this problem, Solve the following trigonometric equation on the interval [ 0, 2pi ) : 2cos2x(sin2x) + sin2x = 0?

05/02/18

The volume of a sandbox is 48ft^3. The height of the sandbox is 2 feet. The width is w feet and the length is w+2 feet. Use the formula V=lwh to find the volume of w

05/01/18

#### help asap math due

a class used cars and buses to go on a field trip. they used 8 vehicles to go on the trip. each car can hold 3 students and each bus holds 30 students. if 78 students were on the trip how many cars... more
Help Asap Please Test Preparation Trigonometry

04/30/18

#### Find the height of the mountain to the nearest foot.

Bob is driving along a straight and level road straight toward a mountain.  At some point on his trip, hemeasures the angle of elevation to the top of the mountain and finds it to be 24° 10′. He... more

04/30/18

#### Slope intercept

write an equation for the line that passes through (2,4) and (5,-2)
Help Asap Please Algebra 2 Algebra

04/30/18

#### Hyperbolas question on constant difference

Identify the constant difference for a hyperbola with foci (0, −5) and (0, 5) and a point on the hyperbola (0, 3).
Help Asap Please Test Preparation Trigonometry

04/29/18

#### 8(cos 90° + i sin 90°)/3(cos 30° + i sin 30°)

Find the following quotient, and write the quotient in rectangular form, using exact values. 8(cos 90° + i sin 90°)/3(cos 30° + i sin 30°)
Help Asap Please Test Preparation Trigonometry

04/29/18

#### Express the complex number in polar form

Express the complex number in polar form and use DeMoivreʹs Theorem to find the given power. Write your answer inrectangular form. Give your answer in exact form unless otherwise specified. 29) (-... more
Help Asap Please Test Preparation Trigonometry

04/29/18

#### Find the product

Find the product. Write the product in rectangular form, using exact values. [4 cis 300°] [5 cis 120°]
Help Asap Please Test Preparation Trigonometry

04/29/18

#### Find the angle between the given vectors to the nearest tenth of a degree.

Find the angle between the given vectors to the nearest tenth of a degree.a = 7i + 2j,   b = -6i + 6j

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