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3 years ago

Select two answer choioces

Mathematics

1 answer:

dexar [7]3 years ago

6 0

Answer:

C or 3rd option

Step-by-step explanation:

1/3 - 2/5

15/15 - 6/15

9/15

B is not correct

2/5 - 1/3

this will be a negative answer

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Calculate the area of triangle ABC given A(1, 1), B(7, 1), and C(4, 6).

s344n2d4d5 [400]

Answer:

Area=15

Step-by-step explanation:

Area=bh1/2

6*5=30

30*1/2

4 0

3 years ago

Frank needs a total of $360 to cover his expenses for the week. He earns $195 a week working at a restaurant and also walks dogs

poizon [28]

Answer:

11 dogs

Step-by-step explanation:

Step 1: Write out your equation

Let the number of dogs Frank walk be d

360 = 15d +195

Step 2: Solve the equation

360 - 195 = 15d

165 = 15d

$\frac{165}{15} =\frac{15d}{15}$

d = 11

Therefore Frank needs to walk a total of 11 dogs to cover his expanse

5 0

3 years ago

The Richter scale is used to measure the intensity of an earthquake. If E, measured in joules, is the energy released during an

Cerrena [4.2K]

Answer:

You have given no numbers, so I attached a table I found at the University of Wichita.

Step-by-step explanation:

8 0

3 years ago

This is 3 question help please

bekas [8.4K]

3 should be D
11 should be D
13 should be A

8 0

3 years ago

Write f(x)=8x^2-4x+11 in vertex form

Vlad [161]

Answer:

$f(x)=8(x-\frac{1}{4})^{2}+\frac{21}{2}$

$f(x)=8(x-0.25)^{2}+10.5$

Step-by-step explanation:

we have

$f(x)=8x^{2}-4x+11$

This is a vertical parabola open upward (because the leading coefficient is positive)

The vertex is a minimum

Convert to vertex form

Factor the leading coefficient

$f(x)=8(x^{2}-\frac{1}{2}x)+11$

Complete the square. Remember to balance the equation by adding the same constants to each side.

$f(x)=8(x^{2}-\frac{1}{2}x+\frac{1}{16})+11-\frac{1}{2}$

$f(x)=8(x^{2}-\frac{1}{2}x+\frac{1}{16})+\frac{21}{2}$

Rewrite as perfect squares

$f(x)=8(x-\frac{1}{4})^{2}+\frac{21}{2}$ ----> equation in vertex form

$f(x)=8(x-0.25)^{2}+10.5$

The vertex is the point (0.25,10.5)

3 0

3 years ago