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mash [69]
3 years ago
13

HELP ME PLZ ASAPPPPPP

Mathematics
1 answer:
boyakko [2]3 years ago
5 0

Answer:

(x,y) =(-4,-3) --- Vertex

x = -4 --- Axis of symmetry

Step-by-step explanation:

Given

y = -6(x + 4)^2 - 3

Solving (a): The vertex

For an equation written in

y = a(x - h)^2 + k

The vertex is:

(x,y) = (h,k)

By comparison:

y = a(x - h)^2 + k  and y = -6(x + 4)^2 - 3

-h =4       k = -3

h =-4         k = -3  

So, the vertex is:

(x,y) =(-4,-3)

Solving (b): The axis of symmetry

For an equation written in

y = a(x - h)^2 + k

The axis of symmetry is:

x = h

In (a):

h =-4

So:

x = -4

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A circle has a diameter of 12 units, and its center lies on the x-axis. What could be the equation of the circle? Check all that
kicyunya [14]

Answer:

Answer:  The correct options are

(B) (x-6)^2+y^2=36,

(D) (x+6)^2+y^2=36.

Step-by-step explanation:

hope this helps

3 0
3 years ago
IVa wantd to train for a race by runing 10km ober 3 days uring the week. The first day she ran 1.37 km more than she aran on the
makkiz [27]

Answer: she ran 3.53km on the third day.

Step-by-step explanation:

Let x represent the number of miles that she ran on the second day.

The first day, she ran 1.37 km more than she ran on the second day. This means that the distance that she ran on the first day is

x + 1.37

On the third day, she ran 0.98 km more than the second day. This means that the distance that she ran on the third day is

x + 0.98

The total distance that she wants to run in 3 days is 10km. This means that

x + 1.37 + x + x + 0.98 = 10

3x + 2.35 = 10

3x = 10 - 2.35

3x = 7.65

x = 7.65/3

x = 2.55

The distance that she ran on the third day is

2.55 + 0.98 = 3.53 km

3 0
3 years ago
Sako makes 11 cakes to share equally among 5 people. How many cakes does each person get?
Rudik [331]

Answer: 2 cakes and 2 slices of an extra ( assuming its cut into 10 slices)

Step-by-step explanation:

11 divided by 5 is equal to 2.2

in this case, 11 cakes divided by 5 friends is equal to 2 cakes and 2 slices.

normally you would just give them 2 cakes each (if you had 10 cakes) but you have 1 left over. So unless Sako wanted a cake as well, that's the answer(if she did, it would only be 2 cakes, no extra slices).

6 0
3 years ago
I GIVE BRAINLYS AND MORE POINTS. How are a parallelogram and a trapezoid different? O A trapezoid has only 1 pair of parallel si
suter [353]

Answer: Choice A

A trapezoid has only 1 pair of parallel sides, but a parallelogram has 2.

=============================================

Explanation:

These terms are just things you memorize. A diagram of two examples is shown below. The example shows a non-rectangular parallelogram, but you could go with rectangles or squares if you wanted to.

5 0
3 years ago
A researcher reports the following confidence interval for a comparison of the difference between two groups: 95% CI −12.0 [−30.
Lapatulllka [165]

Answer:

Decision: Support the null hypothesis.

Sample mean: -12

Step-by-step explanation:

Hello!

When deciding with a Confidence interval you have to keep in mind that the following conditions are met:

  • The hypothesis and the interval are made for the same parameter.
  • The hypothesis should be two-tailed.
  • The interval and the test have to have complementary confidence and signification levels. This means that if the interval is made with 1 - α= 0.95 the hypothesis test should be made with α= 0.05.

H₀: μ₁ - μ₂= 0

H₁: μ₁ - μ₂≠ 0

α: 0.05

If the interval contains the cero, it means that there is no difference between the means, so you support the null hypothesis.

If the interval doesn't contain the cero, there is a difference between the two means, so you reject the null hypothesis.

The intervals to estimate the population mean have the following structure:

Estimator ± Margin of error

This means that the sample mean (point estimate of the population mean) is in the middle of the calculated interval. To know it's the value you have to do a simple calculation:

sample mean: \frac{Upper bound + Lower bound}{2}

sample mean: \frac{6 + (-30)}{2}

sample mean: -12

I hope it helps!

7 0
4 years ago
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