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3 years ago

3. If you are investing into a bank account, which of the following would you rather have

Mathematics

1 answer:

svp [43]3 years ago

4 0

Answer:

annual

Step-by-step explanation:

there worth jack that's why

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What is the gradient of (0,3) and (1,8)

Paha777 [63]

Answer: 5/1 = 5

Step-by-step explanation:

The gradient is the slope of something. The slope = rise/run so you just do 8-3 = 5 is the rise and then 1-0 = the run so its a gradient of 5

5 0

3 years ago

Every set of three points is coplanar. a. True b. False

Ket [755]

We know that 3 point can creating always a plane

so from this result the right choice is A. so is true

4 0

3 years ago

Graph a parabola whose intercepts are x=-3 and x=5 and whose minimum value is y =-4

blagie [28]

Answer:

$y = 4(x^{2} + 8x + 15) = 4x^{2} + 32x + 60$

Step-by-step explanation:

A parabola has the following format:

$y = f(x) = ax^{2} + bx + c$

If a is positive, it's minium value is:

$y_{M} = -\frac{\bigtriangleup}{4a}$

In which

$\bigtriangleup = b^{2} - 4ac$

Factoring:

$ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , in which $x_{1} and x_{2}$ are the intercepts.

In this question:

$x_{1} = -5, x_{2} = -3$

$a(x - x_{1})*(x - x_{2}) = a*(x - (-5))*(x - (-3)) = a*(x+5)*(x+3) = a*(x^{2} + 8x + 15)$

Suppose a = 1, we have:

$x^{2} + 8x + 15$

$\bigtriangleup = 8^{2} - 4*1*15 = 4$

The minimum value will be:

$y_{M} = -\frac{4}{4} = -1$

We want this minimum value to be -4, which is 4 times the current minimum value, so we need to multiply a by 4. Then

$a = 4$

And the parabola is:

$y = 4(x^{2} + 8x + 15) = 4x^{2} + 32x + 60$

4 0

3 years ago

Please help me i can't get answer for this

baherus [9]

Answer:here's ur answer

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

An aquarium holds 33.75 gallons of water. it has a length of 2 feet and a height of 1.5 feet. What is the volume of the aquarium

I am Lyosha [343]

Assuming that the aquarium is rectangular, the formula to work out the volume would be
V = L x H x D
Considering that 1 gallon = 231 inches³
Multiply both by 33.75 to get the total number of inches³ (volume)
231 x 33.75 = 7796.25 inches³

If you also want the depth, read on...

Also, there are 12 inches in one foot
Length = 2 x 12 = 24 inches
Height = 1.5 x 12 = 18 inches

Now we can fill in the information we know

7796.25 = 24 x 18 x D
To work out D, we divide the volume by the values we know
7796.25 / 18 = 433.125
433.125 / 24 = 18.046875 inches
18.046875 / 12 = 1.50390625 feet
To the nearest 2d.p. ≈ 1.5 feet

6 0

3 years ago