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3 years ago

14

If x + 3y = 13 and x + y = 5, the value of y is which of the following?

1 answer:

lana [24]3 years ago

5 0

Just change the y to all of the answers. The correct answer to this particular one is D. 4

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The prices of the 10 most popular truck tires at a tire store are shown here. What's the range of the prices?

photoshop1234 [79]

D- $48.50

you have to subtract the largest and the smallest number to find the range

3 0

3 years ago

2. A scooter travels 30 feet in 2 seconds at a constant speed.

Eduardwww [97]

The scooter travels at 15 ft/s

at 3 seconds, it travels 45 feet
4 seconds, 60 feet
5 seconds, 75 feet

5 0

3 years ago

Find the missing exponent. Set up an equation and solve. : x^4·x^n = x^5

algol [13]

Remember
(x^m)(x^n)=x^(m+n)
and
if a^m=a^n, where a=a then n=m

(x^4)(x^n)=x^5
(x^4)(x^n)=x^(4+n)
x^(4+n)=x^5
therefor
4+n=5
minus 4
n=1

5 0

3 years ago

Read 2 more answers

if $5,000,000 isinvested at 4% interest compunded continuously, how much willl the investment be worth in 30 years

Katarina [22]

The answer is $16216987.55 (IMPORTANT: This is the answer assuming that the interest rate is annually. The quesiton says 'continuously' so I was a bit confused)

To solve this problem, you can use the compound interest formula.

Here it is once you plug in the numbers: A = 5,000,000 ( 1 + .04) ^30

Just solve the equation to find the solution.

8 0

2 years ago

Luda [366]

Trigonometry as taught is mostly about memorizing two lousy triangles, namely half a square and half an equilateral triangle. This one is half an equilateral triangle.

The respective opposite sides of the 30/60/90 triangle are in ratio $1:\sqrt{3}:2$

A sine of √3/2 is an opposite of √3 and a hypotenuse of 2, so opposite and hypotenuse of the 60 degree angle. (It's the mama bear, in the middle, just right.)

$\sin 60^\circ = \dfrac{\sqrt{3}}{2}$

In the end you just have memorize the two tired triangles of trig.

7 0

2 years ago