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oksano4ka [1.4K]
3 years ago
5

PLZ HELP ME WITH MATH

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
4 0

Answer:

The average is -3.

Step-by-step explanation:

-5-8-6-8-3+2+7 = -21

-21/7 = -3

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Graph the equation y=-1(x-3)^2+4
Elena L [17]

Answer:

Direction : Open Down

Vertex : (3,4)

Focus : (3,15/4)

Axis of Symmetry : x=3

Directrix : y=17/4

x : 1,2,3,4,5

y : 0,3,4,3,0

Step-by-step explanation: Graph the parabola using the direction, vertex, focus, and axis symmetry. Graph is included down below!

Hope this helps you out! ☺

3 0
3 years ago
6x = 1/2(2x + 5)<br> Solve for x step by step <br> Please answer quickly
bearhunter [10]

Answer:

x = 1/2

hope it helps

have a nice day

7 0
3 years ago
Read 2 more answers
Write a + - x or ÷ sign in each box to make the equation true <br><br> 7 18 45 3 2 = 139
irina [24]
I mean, I don't know how to explain a generic way to solve this. Ask me about the specific train of thought if you are interested:

7 * 18 + 45 / 3 - 2 = 139
4 0
4 years ago
Help please ill give you brainlest<br> Is this correct??
stealth61 [152]
Most of those are correct but the ones that are not are, (15+8 divided by 4-6) as division comes first. 6x3-8 as multiplication comes before subtraction. And 2/3+4x2, multiplication comes before addition. So change those couple up and you got it.
8 0
3 years ago
A bookstore manager marks down the price of older hardcover books, which originally sell for b dollars, by 42%. Part 1 out of 4
BigorU [14]

Answer:

0.42

Step-by-step explanation:

The original price of the old hardcover books was sold for b dollars. But the manager markdown the hardcover books by 42%.

The expression of the markdown using a decimal can be represented below.

Recall the markdown is 42 %. If you want to convert from percentage to a decimal, you have to move the decimal point two places to the left . The percentage sign is removed at this stage and the value is represent in decimal.  Or you can just divide the percentage value by 100.

In our case the percentage value can be solved as 42/100 = 0.42 in decimal or by just simply moving the decimal points two places to the left which is 0.42.

6 0
3 years ago
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